Netdev List
 help / color / mirror / Atom feed

* Re: WARNING: refcount bug in should_fail
From: Tetsuo Handa @ 2018-04-01 11:11 UTC (permalink / raw)
  To: dvyukov
  Cc: viro, ebiederm, linux-fsdevel, netdev, linux-mm, syzkaller-bugs,
	syzbot+84371b6062cb639d797e
In-Reply-To: <CACT4Y+ZgkV5BF24BYptq5rDYo0oTJq4oHw6_808vLTmMZBmE8A@mail.gmail.com>

Dmitry Vyukov wrote:
> On Sun, Apr 1, 2018 at 12:32 PM, Dmitry Vyukov <dvyukov@google.com> wrote:
> > On Sun, Mar 4, 2018 at 6:57 AM, Tetsuo Handa
> > <penguin-kernel@i-love.sakura.ne.jp> wrote:
> >> Switching from mm to fsdevel, for this report says that put_net(net) in
> >> rpc_kill_sb() made net->count < 0 when mount_ns() failed due to
> >> register_shrinker() failure.
> >>
> >> Relevant commits will be
> >> commit 9ee332d99e4d5a97 ("sget(): handle failures of register_shrinker()") and
> >> commit d91ee87d8d85a080 ("vfs: Pass data, ns, and ns->userns to mount_ns.").
> >>
> >> When sget_userns() in mount_ns() failed, mount_ns() returns an error code to
> >> the caller without calling fill_super(). That is, get_net(sb->s_fs_info) was
> >> not called by rpc_fill_super() (via fill_super callback passed to mount_ns())
> >> but put_net(sb->s_fs_info) is called by rpc_kill_sb() (via fs->kill_sb() from
> >> deactivate_locked_super()).
> >>
> >> ----------
> >> static struct dentry *
> >> rpc_mount(struct file_system_type *fs_type,
> >>                 int flags, const char *dev_name, void *data)
> >> {
> >>         struct net *net = current->nsproxy->net_ns;
> >>         return mount_ns(fs_type, flags, data, net, net->user_ns, rpc_fill_super);
> >> }
> >> ----------
> >
> > Messed kernel output, this is definitely not in should_fail.
> >
> > #syz dup: WARNING: refcount bug in sk_alloc
> 
> Please don't drop reporter (syzbot) email from CC.
> 
> #syz dup: WARNING: refcount bug in sk_alloc
> 

Excuse me? This "refcount bug in should_fail" is talking about sget_userns() versus rpc_fill_super().
I think we need to fix either 9ee332d99e4d5a97 or d91ee87d8d85a080.

> 
> >> syzbot wrote:
> >>> Hello,
> >>>
> >>> syzbot hit the following crash on bpf-next commit
> >>> 6f1b5a2b58d8470e5a8b25ab29f5fdb4616ffff8 (Tue Feb 27 04:11:23 2018 +0000)
> >>> Merge branch 'bpf-kselftest-improvements'
> >>>
> >>> C reproducer is attached.
> >>> syzkaller reproducer is attached.
> >>> Raw console output is attached.
> >>> compiler: gcc (GCC) 7.1.1 20170620
> >>> .config is attached.
> >>>
> >>> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> >>> Reported-by: syzbot+84371b6062cb639d797e@syzkaller.appspotmail.com
> >>> It will help syzbot understand when the bug is fixed. See footer for
> >>> details.
> >>> If you forward the report, please keep this part and the footer.
> >>>
> >>> ------------[ cut here ]------------
> >>> FAULT_INJECTION: forcing a failure.
> >>> name failslab, interval 1, probability 0, space 0, times 0
> >>> refcount_t: underflow; use-after-free.
> >>> CPU: 1 PID: 4239 Comm: syzkaller149381 Not tainted 4.16.0-rc2+ #20
> >>> WARNING: CPU: 0 PID: 4237 at lib/refcount.c:187
> >>> refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:187
> >>> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> >>> Google 01/01/2011
> >>> Call Trace:
> >>> Kernel panic - not syncing: panic_on_warn set ...
> >>>
> >>>   __dump_stack lib/dump_stack.c:17 [inline]
> >>>   dump_stack+0x194/0x24d lib/dump_stack.c:53
> >>>   fail_dump lib/fault-inject.c:51 [inline]
> >>>   should_fail+0x8c0/0xa40 lib/fault-inject.c:149
> >>>   should_failslab+0xec/0x120 mm/failslab.c:32
> >>>   slab_pre_alloc_hook mm/slab.h:422 [inline]
> >>>   slab_alloc mm/slab.c:3365 [inline]
> >>>   __do_kmalloc mm/slab.c:3703 [inline]
> >>>   __kmalloc+0x63/0x760 mm/slab.c:3714
> >>>   kmalloc include/linux/slab.h:517 [inline]
> >>>   kzalloc include/linux/slab.h:701 [inline]
> >>>   register_shrinker+0x10e/0x2d0 mm/vmscan.c:268
> >>>   sget_userns+0xbbf/0xe40 fs/super.c:520
> >>>   mount_ns+0x6d/0x190 fs/super.c:1029
> >>>   rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1451
> >>>   mount_fs+0x66/0x2d0 fs/super.c:1222
> >>>   vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037
> >>>   vfs_kern_mount fs/namespace.c:2509 [inline]
> >>>   do_new_mount fs/namespace.c:2512 [inline]
> >>>   do_mount+0xea4/0x2bb0 fs/namespace.c:2842
> >>>   SYSC_mount fs/namespace.c:3058 [inline]
> >>>   SyS_mount+0xab/0x120 fs/namespace.c:3035
> >>>   do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
> >>>   entry_SYSCALL_64_after_hwframe+0x42/0xb7
> >>> RIP: 0033:0x4460f9
> >>> RSP: 002b:00007fbcd769ad78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
> >>> RAX: ffffffffffffffda RBX: 00000000006dcc6c RCX: 00000000004460f9
> >>> RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000020000000
> >>> RBP: 00007fbcd769ad80 R08: 00000000200000c0 R09: 0000000000003131
> >>> R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc68
> >>> R13: ffffffffffffffff R14: 0000000000000037 R15: 0030656c69662f2e
> >>> CPU: 0 PID: 4237 Comm: syzkaller149381 Not tainted 4.16.0-rc2+ #20
> >>> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> >>> Google 01/01/2011
> >>> Call Trace:
> >>>   __dump_stack lib/dump_stack.c:17 [inline]
> >>>   dump_stack+0x194/0x24d lib/dump_stack.c:53
> >>>   panic+0x1e4/0x41c kernel/panic.c:183
> >>>   __warn+0x1dc/0x200 kernel/panic.c:547
> >>>   report_bug+0x211/0x2d0 lib/bug.c:184
> >>>   fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
> >>>   fixup_bug arch/x86/kernel/traps.c:247 [inline]
> >>>   do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
> >>>   do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
> >>>   invalid_op+0x58/0x80 arch/x86/entry/entry_64.S:957
> >>> RIP: 0010:refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:187
> >>> RSP: 0018:ffff8801b164f6d8 EFLAGS: 00010286
> >>> RAX: dffffc0000000008 RBX: 0000000000000000 RCX: ffffffff815ac30e
> >>> RDX: 0000000000000000 RSI: 1ffff100362c9e8b RDI: 1ffff100362c9e60
> >>> RBP: ffff8801b164f768 R08: 0000000000000000 R09: 0000000000000000
> >>> R10: ffff8801b164f610 R11: 0000000000000000 R12: 1ffff100362c9edc
> >>> R13: 00000000ffffffff R14: 0000000000000001 R15: ffff8801ae924044
> >>>   refcount_dec_and_test+0x1a/0x20 lib/refcount.c:212
> >>>   put_net include/net/net_namespace.h:220 [inline]
> >>>   rpc_kill_sb+0x253/0x3c0 net/sunrpc/rpc_pipe.c:1473
> >>>   deactivate_locked_super+0x88/0xd0 fs/super.c:312
> >>>   sget_userns+0xbda/0xe40 fs/super.c:522
> >>>   mount_ns+0x6d/0x190 fs/super.c:1029
> >>>   rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1451
> >>>   mount_fs+0x66/0x2d0 fs/super.c:1222
> >>>   vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037
> >>>   vfs_kern_mount fs/namespace.c:2509 [inline]
> >>>   do_new_mount fs/namespace.c:2512 [inline]
> >>>   do_mount+0xea4/0x2bb0 fs/namespace.c:2842
> >>>   SYSC_mount fs/namespace.c:3058 [inline]
> >>>   SyS_mount+0xab/0x120 fs/namespace.c:3035
> >>>   do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
> >>>   entry_SYSCALL_64_after_hwframe+0x42/0xb7
> >>> RIP: 0033:0x4460f9
> >>> RSP: 002b:00007fbcd76dcd78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
> >>> RAX: ffffffffffffffda RBX: 00000000006dcc3c RCX: 00000000004460f9
> >>> RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000020000000
> >>> RBP: 00007fbcd76dcd80 R08: 00000000200000c0 R09: 0000000000003131
> >>> R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc38
> >>> R13: ffffffffffffffff R14: 0000000000000028 R15: 0030656c69662f2e
> >>> Dumping ftrace buffer:
> >>>     (ftrace buffer empty)
> >>> Kernel Offset: disabled
> >>> Rebooting in 86400 seconds..
> >>>
> >>>
> >>> ---
> >>> This bug is generated by a dumb bot. It may contain errors.
> >>> See https://goo.gl/tpsmEJ for details.
> >>> Direct all questions to syzkaller@googlegroups.com.
> >>>
> >>> syzbot will keep track of this bug report.
> >>> If you forgot to add the Reported-by tag, once the fix for this bug is
> >>> merged
> >>> into any tree, please reply to this email with:
> >>> #syz fix: exact-commit-title
> >>> If you want to test a patch for this bug, please reply with:
> >>> #syz test: git://repo/address.git branch
> >>> and provide the patch inline or as an attachment.
> >>> To mark this as a duplicate of another syzbot report, please reply with:
> >>> #syz dup: exact-subject-of-another-report
> >>> If it's a one-off invalid bug report, please reply with:
> >>> #syz invalid
> >>> Note: if the crash happens again, it will cause creation of a new bug
> >>> report.
> >>> Note: all commands must start from beginning of the line in the email body.
> >>>
> >>
> >> --
> >> You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group.
> >> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com.
> >> To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/201803041457.GBJ69774.OVOSOLFHQMJFFt%40I-love.SAKURA.ne.jp.
> >> For more options, visit https://groups.google.com/d/optout.
> 

^ permalink raw reply

* Re: [PATCH net-next v2] ipvs: fix multiplicative hashing in sh/dh/lblc/lblcr algorithms
From: Julian Anastasov @ 2018-04-01 11:11 UTC (permalink / raw)
  To: Vincent Bernat
  Cc: Wensong Zhang, Simon Horman, David S. Miller, netdev, lvs-devel
In-Reply-To: <20180401102711.20862-1-vincent@bernat.im>


	Hello,

On Sun, 1 Apr 2018, Vincent Bernat wrote:

> The sh/dh/lblc/lblcr algorithms are using Knuth's multiplicative
> hashing incorrectly. Replace its use by the hash_32() macro, which
> correctly implements this algorithm. It doesn't use the same constant,
> but it shouldn't matter.
> 
> Signed-off-by: Vincent Bernat <vincent@bernat.im>

	Looks good to me, thanks! Simon, please apply, if possible
with the extra space removed, see below...

Acked-by: Julian Anastasov <ja@ssi.bg>

> ---
>  net/netfilter/ipvs/ip_vs_dh.c    | 3 ++-
>  net/netfilter/ipvs/ip_vs_lblc.c  | 3 ++-
>  net/netfilter/ipvs/ip_vs_lblcr.c | 3 ++-
>  net/netfilter/ipvs/ip_vs_sh.c    | 3 ++-
>  4 files changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/net/netfilter/ipvs/ip_vs_dh.c b/net/netfilter/ipvs/ip_vs_dh.c
> index 75f798f8e83b..dfea31fb10c5 100644
> --- a/net/netfilter/ipvs/ip_vs_dh.c
> +++ b/net/netfilter/ipvs/ip_vs_dh.c
> @@ -43,6 +43,7 @@
>  #include <linux/module.h>
>  #include <linux/kernel.h>
>  #include <linux/skbuff.h>
> +#include <linux/hash.h>
>  
>  #include <net/ip_vs.h>
>  
> @@ -81,7 +82,7 @@ static inline unsigned int ip_vs_dh_hashkey(int af, const union nf_inet_addr *ad
>  		addr_fold = addr->ip6[0]^addr->ip6[1]^
>  			    addr->ip6[2]^addr->ip6[3];
>  #endif
> -	return (ntohl(addr_fold)*2654435761UL) & IP_VS_DH_TAB_MASK;
> +	return hash_32(ntohl(addr_fold),  IP_VS_DH_TAB_BITS);

	Extra space above

>  }
>  
>  
> diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
> index 3057e453bf31..08147fc6400c 100644
> --- a/net/netfilter/ipvs/ip_vs_lblc.c
> +++ b/net/netfilter/ipvs/ip_vs_lblc.c
> @@ -48,6 +48,7 @@
>  #include <linux/kernel.h>
>  #include <linux/skbuff.h>
>  #include <linux/jiffies.h>
> +#include <linux/hash.h>
>  
>  /* for sysctl */
>  #include <linux/fs.h>
> @@ -160,7 +161,7 @@ ip_vs_lblc_hashkey(int af, const union nf_inet_addr *addr)
>  		addr_fold = addr->ip6[0]^addr->ip6[1]^
>  			    addr->ip6[2]^addr->ip6[3];
>  #endif
> -	return (ntohl(addr_fold)*2654435761UL) & IP_VS_LBLC_TAB_MASK;
> +	return hash_32(ntohl(addr_fold), IP_VS_LBLC_TAB_BITS);
>  }
>  
>  
> diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
> index 92adc04557ed..9b6a6c9e9cfa 100644
> --- a/net/netfilter/ipvs/ip_vs_lblcr.c
> +++ b/net/netfilter/ipvs/ip_vs_lblcr.c
> @@ -47,6 +47,7 @@
>  #include <linux/jiffies.h>
>  #include <linux/list.h>
>  #include <linux/slab.h>
> +#include <linux/hash.h>
>  
>  /* for sysctl */
>  #include <linux/fs.h>
> @@ -323,7 +324,7 @@ ip_vs_lblcr_hashkey(int af, const union nf_inet_addr *addr)
>  		addr_fold = addr->ip6[0]^addr->ip6[1]^
>  			    addr->ip6[2]^addr->ip6[3];
>  #endif
> -	return (ntohl(addr_fold)*2654435761UL) & IP_VS_LBLCR_TAB_MASK;
> +	return hash_32(ntohl(addr_fold), IP_VS_LBLCR_TAB_BITS);
>  }
>  
>  
> diff --git a/net/netfilter/ipvs/ip_vs_sh.c b/net/netfilter/ipvs/ip_vs_sh.c
> index 16aaac6eedc9..1e01c782583a 100644
> --- a/net/netfilter/ipvs/ip_vs_sh.c
> +++ b/net/netfilter/ipvs/ip_vs_sh.c
> @@ -96,7 +96,8 @@ ip_vs_sh_hashkey(int af, const union nf_inet_addr *addr,
>  		addr_fold = addr->ip6[0]^addr->ip6[1]^
>  			    addr->ip6[2]^addr->ip6[3];
>  #endif
> -	return (offset + (ntohs(port) + ntohl(addr_fold))*2654435761UL) &
> +	return (offset + hash_32(ntohs(port) + ntohl(addr_fold),
> +				 IP_VS_SH_TAB_BITS)) &
>  		IP_VS_SH_TAB_MASK;
>  }
>  
> -- 
> 2.16.3

Regards

^ permalink raw reply

* Re: INFO: rcu detected stall in vprintk_default
From: Dmitry Vyukov @ 2018-04-01 10:52 UTC (permalink / raw)
  To: syzbot, Samuel Ortiz, David Miller, linux-wireless, netdev
  Cc: LKML, Petr Mladek, Steven Rostedt, Sergey Senozhatsky,
	syzkaller-bugs
In-Reply-To: <000000000000cc8f100568c73c82@google.com>

On Sun, Apr 1, 2018 at 12:50 PM, syzbot
<syzbot+19c436b56eaa98e50e98@syzkaller.appspotmail.com> wrote:
> Hello,
>
> syzbot hit the following crash on upstream commit
> 10b84daddbec72c6b440216a69de9a9605127f7a (Sat Mar 31 17:59:00 2018 +0000)
> Merge branch 'perf-urgent-for-linus' of
> git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> syzbot dashboard link:
> https://syzkaller.appspot.com/bug?extid=19c436b56eaa98e50e98
>
> Unfortunately, I don't have any reproducer for this crash yet.
> Raw console output:
> https://syzkaller.appspot.com/x/log.txt?id=4989667443212288
> Kernel config:
> https://syzkaller.appspot.com/x/.config?id=-2760467897697295172
> compiler: gcc (GCC) 7.1.1 20170620

Seems to be the same as:

#syz dup: INFO: rcu detected stall in vprintk_func

+nfc maintainers


> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+19c436b56eaa98e50e98@syzkaller.appspotmail.com
> It will help syzbot understand when the bug is fixed. See footer for
> details.
> If you forward the report, please keep this part and the footer.
>
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> INFO: rcu_sched self-detected stall on CPU
>         1-...!: (18264 ticks this GP) idle=37a/1/4611686018427387906
> softirq=28996/28996 fqs=216
>
>  (t=125004 jiffies g=15379 c=15378 q=788)
>
> (detected by 0, t=125004 jiffies, g=15379, c=15378, q=788)
> rcu_sched       R
> CPU: 1 PID: 9892 Comm: syz-executor7 Not tainted 4.16.0-rc7+ #9
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 01/01/2011
> RIP: 0010:stack_not_used include/linux/sched/task_stack.h:101 [inline]
> RIP: 0010:sched_show_task+0x324/0x5e0 kernel/sched/core.c:5259
> RSP: 0018:ffff8801db107298 EFLAGS: 00000046
> RAX: dffffc0000000000 RBX: ffff8801d9af8200 RCX: 0000000000000000
> RDX: 1ffff1003b3604bd RSI: 1ffff1003b620e08 RDI: ffffed003b620e47
> R10: ffffffff885909d0 R11: 0000000000000000 R12: 1ffff1003b620e55
> R13: ffff8801d9b025e8 R14: ffff8801db107388 R15: ffff8801d9b00000
> FS:  00007fe826c07700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
>  rcu_check_gp_kthread_starvation+0x32d/0x384 kernel/rcu/tree.c:1353
>  update_process_times+0x30/0x60 kernel/time/timer.c:1636
>  tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:162
>  local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
>  smp_apic_timer_interrupt+0x14a/0x700 arch/x86/kernel/apic/apic.c:1050
>  apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857
> RSP: 0018:ffff8801845d74a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12
> RAX: 0000000000040000 RBX: 1ffffffff10a24ed RCX: ffffffff815ae4cf
> RBP: ffff8801845d7630 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000034
> R13: ffff8801845d7588 R14: ffffed00308baeb1 R15: ffffffff89db2f40
>  vprintk_default+0x28/0x30 kernel/printk/printk.c:1947
>  printk+0xaa/0xca kernel/printk/printk.c:1980
>  nfc_llcp_send_ui_frame+0x430/0x4e0 net/nfc/llcp_commands.c:758
>  llcp_sock_sendmsg+0x224/0x2f0 net/nfc/llcp_sock.c:790
>  ___sys_sendmsg+0x320/0x8b0 net/socket.c:2046
>  SYSC_sendmmsg net/socket.c:2167 [inline]
>  SyS_sendmmsg+0x35/0x60 net/socket.c:2162
>  do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
> RIP: 0033:0x454e79
> RSP: 002b:00007fe826c06c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
> RDX: 0000000000000001 RSI: 0000000020000340 RDI: 0000000000000014
> RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000002 R11: 0000000000000246 R12: 00000000ffffffff
> R13: 00000000000004c9 R14: 00000000006f9378 R15: 0000000000000000
> Code: 03 80 3c 02 00 0f 85 6e 02 00 00 4c 8b 7b 40 48 b8 00 00 00 00 00 fc
> ff df 4d 89 fd 49 83 c5 08 4c 89 ea 48 c1 ea 03 80 3c 02 00 <0f> 85 66 02 00
> 00 49 83 7d 00 00 74 e4 4d 29 fd 4c 89 ad f0 fe
> 24368     8      2 0x80000000
> Call Trace:
>  context_switch kernel/sched/core.c:2862 [inline]
>  __schedule+0x8fb/0x1ec0 kernel/sched/core.c:3440
> rcu_sched       R  running task
> Call Trace:
>  schedule+0xf5/0x430 kernel/sched/core.c:3499
>  kthread+0x33c/0x400 kernel/kthread.c:238
>  ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406
> NMI backtrace for cpu 1
>  rcu_gp_kthread+0x9dd/0x18e0 kernel/rcu/tree.c:2230
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 01/01/2011
> Call Trace:
>  __dump_stack lib/dump_stack.c:17 [inline]
>  dump_stack+0x194/0x24d lib/dump_stack.c:53
>  nmi_trigger_cpumask_backtrace+0x123/0x180 lib/nmi_backtrace.c:62
>  arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
>  print_cpu_stall kernel/rcu/tree.c:1524 [inline]
>  check_cpu_stall.isra.61+0xbb8/0x15b0 kernel/rcu/tree.c:1592
>  update_process_times+0x30/0x60 kernel/time/timer.c:1636
>  tick_sched_timer+0x42/0x120 kernel/time/tick-sched.c:1194
>  hrtimer_interrupt+0x2a5/0x6f0 kernel/time/hrtimer.c:1469
>  local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
>  smp_apic_timer_interrupt+0x14a/0x700 arch/x86/kernel/apic/apic.c:1050
>  apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857
>  </IRQ>
> RAX: 0000000000040000 RBX: 1ffffffff10a24ed RCX: ffffffff815ae4cf
> RDX: 0000000000040000 RSI: ffffc90001b89000 RDI: 0000000000000246
> RBP: ffff8801845d7630 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000034
>  vprintk_default+0x28/0x30 kernel/printk/printk.c:1947
>  vprintk_func+0x57/0xc0 kernel/printk/printk_safe.c:379
>  nfc_llcp_send_ui_frame+0x430/0x4e0 net/nfc/llcp_commands.c:758
>  llcp_sock_sendmsg+0x224/0x2f0 net/nfc/llcp_sock.c:790
>  __sys_sendmmsg+0x1ee/0x620 net/socket.c:2136
>  SYSC_sendmmsg net/socket.c:2167 [inline]
>  SyS_sendmmsg+0x35/0x60 net/socket.c:2162
> RSP: 002b:00007fe826c06c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
> RAX: ffffffffffffffda RBX: 00007fe826c076d4 RCX: 0000000000454e79
> RDX: 0000000000000001 RSI: 0000000020000340 RDI: 0000000000000014
> RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000002 R11: 0000000000000246 R12: 00000000ffffffff
> R13: 00000000000004c9 R14: 00000000006f9378 R15: 0000000000000000
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>
>
> ---
> This bug is generated by a dumb bot. It may contain errors.
> See https://goo.gl/tpsmEJ for details.
> Direct all questions to syzkaller@googlegroups.com.
>
> syzbot will keep track of this bug report.
> If you forgot to add the Reported-by tag, once the fix for this bug is
> merged
> into any tree, please reply to this email with:
> #syz fix: exact-commit-title
> To mark this as a duplicate of another syzbot report, please reply with:
> #syz dup: exact-subject-of-another-report
> If it's a one-off invalid bug report, please reply with:
> #syz invalid
> Note: if the crash happens again, it will cause creation of a new bug
> report.
> Note: all commands must start from beginning of the line in the email body.
>
> --
> You received this message because you are subscribed to the Google Groups
> "syzkaller-bugs" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to syzkaller-bugs+unsubscribe@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/syzkaller-bugs/000000000000cc8f100568c73c82%40google.com.
> For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply

* Re: INFO: rcu detected stall in vprintk_func
From: Dmitry Vyukov @ 2018-04-01 10:51 UTC (permalink / raw)
  To: syzbot
  Cc: LKML, Petr Mladek, Steven Rostedt, Sergey Senozhatsky,
	syzkaller-bugs, Samuel Ortiz, David Miller, linux-wireless,
	netdev
In-Reply-To: <001a113fe6c0a6ec650568c7384f@google.com>

On Sun, Apr 1, 2018 at 12:49 PM, syzbot
<syzbot+3f28bd18291266ec826b@syzkaller.appspotmail.com> wrote:
> Hello,
>
> syzbot hit the following crash on upstream commit
> 3eb2ce825ea1ad89d20f7a3b5780df850e4be274 (Sun Mar 25 22:44:30 2018 +0000)
> Linux 4.16-rc7
> syzbot dashboard link:
> https://syzkaller.appspot.com/bug?extid=3f28bd18291266ec826b
>
> Unfortunately, I don't have any reproducer for this crash yet.
> Raw console output:
> https://syzkaller.appspot.com/x/log.txt?id=4815791329378304
> Kernel config:
> https://syzkaller.appspot.com/x/.config?id=-2340295454854568752
> compiler: gcc (GCC) 7.1.1 20170620


The problem seems to be in nfc, so +nfc maintainers.


> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+3f28bd18291266ec826b@syzkaller.appspotmail.com
> It will help syzbot understand when the bug is fixed. See footer for
> details.
> If you forward the report, please keep this part and the footer.
>
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> INFO: rcu_sched detected stalls on CPUs/tasks:
>         (detected by 1, t=125006 jiffies, g=23111, c=23110, q=45)
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> syz-executor1   R  running task    24512 13655   4242 0x00000008
> Call Trace:
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  print_other_cpu_stall+0x996/0x1090 kernel/rcu/tree.c:1480
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  check_cpu_stall.isra.61+0x6e6/0x15b0 kernel/rcu/tree.c:1598
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  update_process_times+0x30/0x60 kernel/time/timer.c:1636
>  tick_sched_timer+0x42/0x120 kernel/time/tick-sched.c:1194
>  __run_hrtimer kernel/time/hrtimer.c:1349 [inline]
>  __hrtimer_run_queues+0x39c/0xec0 kernel/time/hrtimer.c:1411
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  hrtimer_interrupt+0x2a5/0x6f0 kernel/time/hrtimer.c:1469
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857
> RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:778
> [inline]
> RIP: 0010:console_unlock+0xd98/0xfb0 kernel/printk/printk.c:2399
> RAX: 0000000000010000 RBX: 0000000000000200 RCX: ffffffff815a8fef
> RDX: 0000000000010000 RSI: ffffc90004937000 RDI: 0000000000000246
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
> R13: 0000000000000000 R14: ffffffff83ba1660 R15: dffffc0000000000
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  vprintk_func+0x57/0xc0 kernel/printk/printk_safe.c:379
>  printk+0xaa/0xca kernel/printk/printk.c:1980
>  nfc_llcp_send_ui_frame+0x430/0x4e0 net/nfc/llcp_commands.c:758
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  __sys_sendmmsg+0x1ee/0x620 net/socket.c:2136
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  SYSC_sendmmsg net/socket.c:2167 [inline]
>  SyS_sendmmsg+0x35/0x60 net/socket.c:2162
>  do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  entry_SYSCALL_64_after_hwframe+0x42/0xb7
> RSP: 002b:00007fdb811c4c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
> RAX: ffffffffffffffda RBX: 00007fdb811c56d4 RCX: 0000000000454879
> RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
> R13: 00000000000004c0 R14: 00000000006f82a0 R15: 0000000000000000
> rcu_sched kthread starved for 125907 jiffies! g23111 c23110 f0x2
> RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> rcu_sched       R  running task    23448     8      2 0x80000000
>  context_switch kernel/sched/core.c:2862 [inline]
>  __schedule+0x8fb/0x1ec0 kernel/sched/core.c:3440
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  schedule+0xf5/0x430 kernel/sched/core.c:3499
>  schedule_timeout+0x118/0x230 kernel/time/timer.c:1801
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
>  rcu_gp_kthread+0x9dd/0x18e0 kernel/rcu/tree.c:2230
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocate PDU
> llcp: nfc_llcp_send_ui_frame: Could not allocat
>
> ---
> This bug is generated by a dumb bot. It may contain errors.
> See https://goo.gl/tpsmEJ for details.
> Direct all questions to syzkaller@googlegroups.com.
>
> syzbot will keep track of this bug report.
> If you forgot to add the Reported-by tag, once the fix for this bug is
> merged
> into any tree, please reply to this email with:
> #syz fix: exact-commit-title
> To mark this as a duplicate of another syzbot report, please reply with:
> #syz dup: exact-subject-of-another-report
> If it's a one-off invalid bug report, please reply with:
> #syz invalid
> Note: if the crash happens again, it will cause creation of a new bug
> report.
> Note: all commands must start from beginning of the line in the email body.
>
> --
> You received this message because you are subscribed to the Google Groups
> "syzkaller-bugs" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to syzkaller-bugs+unsubscribe@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/syzkaller-bugs/001a113fe6c0a6ec650568c7384f%40google.com.
> For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply

* Re: [PATCH v4 iproute2-next 1/7] rdma: update rdma_netlink.h
From: Leon Romanovsky @ 2018-04-01 10:47 UTC (permalink / raw)
  To: Steve Wise; +Cc: dsahern, stephen, netdev, linux-rdma
In-Reply-To: <8b0ef68809c44e8d92d47a7bf95a69f2d9743407.1522359537.git.swise@opengridcomputing.com>

[-- Attachment #1: Type: text/plain, Size: 496 bytes --]

On Thu, Mar 29, 2018 at 09:10:30AM -0700, Steve Wise wrote:
> From: Steve Wise <swise@opengridcomputing.com>
>
> Pull in the latest rdma_netlink.h which has support for
> the rdma nldev resource tracking objects being added
> with this patch series.
>
> Signed-off-by: Steve Wise <swise@opengridcomputing.com>
> ---
>  rdma/include/uapi/rdma/rdma_netlink.h | 38 +++++++++++++++++++++++++++++++++++
>  1 file changed, 38 insertions(+)
>

Thanks,
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]

^ permalink raw reply

* Re: WARNING: refcount bug in should_fail
From: Tetsuo Handa @ 2018-04-01 10:41 UTC (permalink / raw)
  To: syzbot+, syzkaller-bugs, dvyukov
  Cc: ebiederm, linux-fsdevel, linux-mm, netdev, viro
In-Reply-To: <94eb2c0b816e88bfc50568c6fed5@google.com>

syzbot wrote:
> > On Sun, Mar 4, 2018 at 6:57 AM, Tetsuo Handa
> > <penguin-kernel@i-love.sakura.ne.jp> wrote:
> >> Switching from mm to fsdevel, for this report says that put_net(net) in
> >> rpc_kill_sb() made net->count < 0 when mount_ns() failed due to
> >> register_shrinker() failure.
> 
> >> Relevant commits will be
> >> commit 9ee332d99e4d5a97 ("sget(): handle failures of  
> >> register_shrinker()") and
> >> commit d91ee87d8d85a080 ("vfs: Pass data, ns, and ns->userns to  
> >> mount_ns.").
> 
> >> When sget_userns() in mount_ns() failed, mount_ns() returns an error  
> >> code to
> >> the caller without calling fill_super(). That is, get_net(sb->s_fs_info)  
> >> was
> >> not called by rpc_fill_super() (via fill_super callback passed to  
> >> mount_ns())
> >> but put_net(sb->s_fs_info) is called by rpc_kill_sb() (via fs->kill_sb()  
> >> from
> >> deactivate_locked_super()).
> 
> >> ----------
> >> static struct dentry *
> >> rpc_mount(struct file_system_type *fs_type,
> >>                  int flags, const char *dev_name, void *data)
> >> {
> >>          struct net *net = current->nsproxy->net_ns;
> >>          return mount_ns(fs_type, flags, data, net, net->user_ns,  
> >> rpc_fill_super);
> >> }
> >> ----------
> 
> > Messed kernel output, this is definitely not in should_fail.
> 
> > #syz dup: WARNING: refcount bug in sk_alloc
> 
> Can't find the corresponding bug.
> 
I don't think this is a dup of existing bug.
We need to fix either 9ee332d99e4d5a97 or d91ee87d8d85a080.

^ permalink raw reply

* Re: WARNING: refcount bug in should_fail
From: Dmitry Vyukov @ 2018-04-01 10:37 UTC (permalink / raw)
  To: Tetsuo Handa
  Cc: Al Viro, Eric W. Biederman, linux-fsdevel, netdev, Linux-MM,
	syzkaller-bugs, syzbot+84371b6062cb639d797e
In-Reply-To: <CACT4Y+aSEsoS60A0O0Ypg=kwRZV10SzUELbcG7KEkaTV7aMU5Q@mail.gmail.com>

On Sun, Apr 1, 2018 at 12:32 PM, Dmitry Vyukov <dvyukov@google.com> wrote:
> On Sun, Mar 4, 2018 at 6:57 AM, Tetsuo Handa
> <penguin-kernel@i-love.sakura.ne.jp> wrote:
>> Switching from mm to fsdevel, for this report says that put_net(net) in
>> rpc_kill_sb() made net->count < 0 when mount_ns() failed due to
>> register_shrinker() failure.
>>
>> Relevant commits will be
>> commit 9ee332d99e4d5a97 ("sget(): handle failures of register_shrinker()") and
>> commit d91ee87d8d85a080 ("vfs: Pass data, ns, and ns->userns to mount_ns.").
>>
>> When sget_userns() in mount_ns() failed, mount_ns() returns an error code to
>> the caller without calling fill_super(). That is, get_net(sb->s_fs_info) was
>> not called by rpc_fill_super() (via fill_super callback passed to mount_ns())
>> but put_net(sb->s_fs_info) is called by rpc_kill_sb() (via fs->kill_sb() from
>> deactivate_locked_super()).
>>
>> ----------
>> static struct dentry *
>> rpc_mount(struct file_system_type *fs_type,
>>                 int flags, const char *dev_name, void *data)
>> {
>>         struct net *net = current->nsproxy->net_ns;
>>         return mount_ns(fs_type, flags, data, net, net->user_ns, rpc_fill_super);
>> }
>> ----------
>
> Messed kernel output, this is definitely not in should_fail.
>
> #syz dup: WARNING: refcount bug in sk_alloc

Please don't drop reporter (syzbot) email from CC.

#syz dup: WARNING: refcount bug in sk_alloc


>> syzbot wrote:
>>> Hello,
>>>
>>> syzbot hit the following crash on bpf-next commit
>>> 6f1b5a2b58d8470e5a8b25ab29f5fdb4616ffff8 (Tue Feb 27 04:11:23 2018 +0000)
>>> Merge branch 'bpf-kselftest-improvements'
>>>
>>> C reproducer is attached.
>>> syzkaller reproducer is attached.
>>> Raw console output is attached.
>>> compiler: gcc (GCC) 7.1.1 20170620
>>> .config is attached.
>>>
>>> IMPORTANT: if you fix the bug, please add the following tag to the commit:
>>> Reported-by: syzbot+84371b6062cb639d797e@syzkaller.appspotmail.com
>>> It will help syzbot understand when the bug is fixed. See footer for
>>> details.
>>> If you forward the report, please keep this part and the footer.
>>>
>>> ------------[ cut here ]------------
>>> FAULT_INJECTION: forcing a failure.
>>> name failslab, interval 1, probability 0, space 0, times 0
>>> refcount_t: underflow; use-after-free.
>>> CPU: 1 PID: 4239 Comm: syzkaller149381 Not tainted 4.16.0-rc2+ #20
>>> WARNING: CPU: 0 PID: 4237 at lib/refcount.c:187
>>> refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:187
>>> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
>>> Google 01/01/2011
>>> Call Trace:
>>> Kernel panic - not syncing: panic_on_warn set ...
>>>
>>>   __dump_stack lib/dump_stack.c:17 [inline]
>>>   dump_stack+0x194/0x24d lib/dump_stack.c:53
>>>   fail_dump lib/fault-inject.c:51 [inline]
>>>   should_fail+0x8c0/0xa40 lib/fault-inject.c:149
>>>   should_failslab+0xec/0x120 mm/failslab.c:32
>>>   slab_pre_alloc_hook mm/slab.h:422 [inline]
>>>   slab_alloc mm/slab.c:3365 [inline]
>>>   __do_kmalloc mm/slab.c:3703 [inline]
>>>   __kmalloc+0x63/0x760 mm/slab.c:3714
>>>   kmalloc include/linux/slab.h:517 [inline]
>>>   kzalloc include/linux/slab.h:701 [inline]
>>>   register_shrinker+0x10e/0x2d0 mm/vmscan.c:268
>>>   sget_userns+0xbbf/0xe40 fs/super.c:520
>>>   mount_ns+0x6d/0x190 fs/super.c:1029
>>>   rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1451
>>>   mount_fs+0x66/0x2d0 fs/super.c:1222
>>>   vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037
>>>   vfs_kern_mount fs/namespace.c:2509 [inline]
>>>   do_new_mount fs/namespace.c:2512 [inline]
>>>   do_mount+0xea4/0x2bb0 fs/namespace.c:2842
>>>   SYSC_mount fs/namespace.c:3058 [inline]
>>>   SyS_mount+0xab/0x120 fs/namespace.c:3035
>>>   do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
>>>   entry_SYSCALL_64_after_hwframe+0x42/0xb7
>>> RIP: 0033:0x4460f9
>>> RSP: 002b:00007fbcd769ad78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
>>> RAX: ffffffffffffffda RBX: 00000000006dcc6c RCX: 00000000004460f9
>>> RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000020000000
>>> RBP: 00007fbcd769ad80 R08: 00000000200000c0 R09: 0000000000003131
>>> R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc68
>>> R13: ffffffffffffffff R14: 0000000000000037 R15: 0030656c69662f2e
>>> CPU: 0 PID: 4237 Comm: syzkaller149381 Not tainted 4.16.0-rc2+ #20
>>> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
>>> Google 01/01/2011
>>> Call Trace:
>>>   __dump_stack lib/dump_stack.c:17 [inline]
>>>   dump_stack+0x194/0x24d lib/dump_stack.c:53
>>>   panic+0x1e4/0x41c kernel/panic.c:183
>>>   __warn+0x1dc/0x200 kernel/panic.c:547
>>>   report_bug+0x211/0x2d0 lib/bug.c:184
>>>   fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
>>>   fixup_bug arch/x86/kernel/traps.c:247 [inline]
>>>   do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
>>>   do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
>>>   invalid_op+0x58/0x80 arch/x86/entry/entry_64.S:957
>>> RIP: 0010:refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:187
>>> RSP: 0018:ffff8801b164f6d8 EFLAGS: 00010286
>>> RAX: dffffc0000000008 RBX: 0000000000000000 RCX: ffffffff815ac30e
>>> RDX: 0000000000000000 RSI: 1ffff100362c9e8b RDI: 1ffff100362c9e60
>>> RBP: ffff8801b164f768 R08: 0000000000000000 R09: 0000000000000000
>>> R10: ffff8801b164f610 R11: 0000000000000000 R12: 1ffff100362c9edc
>>> R13: 00000000ffffffff R14: 0000000000000001 R15: ffff8801ae924044
>>>   refcount_dec_and_test+0x1a/0x20 lib/refcount.c:212
>>>   put_net include/net/net_namespace.h:220 [inline]
>>>   rpc_kill_sb+0x253/0x3c0 net/sunrpc/rpc_pipe.c:1473
>>>   deactivate_locked_super+0x88/0xd0 fs/super.c:312
>>>   sget_userns+0xbda/0xe40 fs/super.c:522
>>>   mount_ns+0x6d/0x190 fs/super.c:1029
>>>   rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1451
>>>   mount_fs+0x66/0x2d0 fs/super.c:1222
>>>   vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037
>>>   vfs_kern_mount fs/namespace.c:2509 [inline]
>>>   do_new_mount fs/namespace.c:2512 [inline]
>>>   do_mount+0xea4/0x2bb0 fs/namespace.c:2842
>>>   SYSC_mount fs/namespace.c:3058 [inline]
>>>   SyS_mount+0xab/0x120 fs/namespace.c:3035
>>>   do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
>>>   entry_SYSCALL_64_after_hwframe+0x42/0xb7
>>> RIP: 0033:0x4460f9
>>> RSP: 002b:00007fbcd76dcd78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
>>> RAX: ffffffffffffffda RBX: 00000000006dcc3c RCX: 00000000004460f9
>>> RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000020000000
>>> RBP: 00007fbcd76dcd80 R08: 00000000200000c0 R09: 0000000000003131
>>> R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc38
>>> R13: ffffffffffffffff R14: 0000000000000028 R15: 0030656c69662f2e
>>> Dumping ftrace buffer:
>>>     (ftrace buffer empty)
>>> Kernel Offset: disabled
>>> Rebooting in 86400 seconds..
>>>
>>>
>>> ---
>>> This bug is generated by a dumb bot. It may contain errors.
>>> See https://goo.gl/tpsmEJ for details.
>>> Direct all questions to syzkaller@googlegroups.com.
>>>
>>> syzbot will keep track of this bug report.
>>> If you forgot to add the Reported-by tag, once the fix for this bug is
>>> merged
>>> into any tree, please reply to this email with:
>>> #syz fix: exact-commit-title
>>> If you want to test a patch for this bug, please reply with:
>>> #syz test: git://repo/address.git branch
>>> and provide the patch inline or as an attachment.
>>> To mark this as a duplicate of another syzbot report, please reply with:
>>> #syz dup: exact-subject-of-another-report
>>> If it's a one-off invalid bug report, please reply with:
>>> #syz invalid
>>> Note: if the crash happens again, it will cause creation of a new bug
>>> report.
>>> Note: all commands must start from beginning of the line in the email body.
>>>
>>
>> --
>> You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group.
>> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com.
>> To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/201803041457.GBJ69774.OVOSOLFHQMJFFt%40I-love.SAKURA.ne.jp.
>> For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply

* Re: WARNING in refcount_sub_and_test (2)
From: Dmitry Vyukov @ 2018-04-01 10:34 UTC (permalink / raw)
  To: syzbot
  Cc: David Miller, Alexey Kuznetsov, LKML, netdev, syzkaller-bugs,
	Hideaki YOSHIFUJI
In-Reply-To: <001a113ed5546fb3c00568944220@google.com>

On Fri, Mar 30, 2018 at 12:01 AM, syzbot
<syzbot+c7b0dde061c523bc4b0f@syzkaller.appspotmail.com> wrote:
> Hello,
>
> syzbot hit the following crash on bpf-next commit
> 22527437e0a0c96ee3153e9d0382942b0fd4f9dd (Thu Mar 29 02:36:15 2018 +0000)
> Merge branch 'nfp-bpf-updates'
> syzbot dashboard link:
> https://syzkaller.appspot.com/bug?extid=c7b0dde061c523bc4b0f
>
> C reproducer: https://syzkaller.appspot.com/x/repro.c?id=5996614741131264
> syzkaller reproducer:
> https://syzkaller.appspot.com/x/repro.syz?id=5947747274326016
> Raw console output:
> https://syzkaller.appspot.com/x/log.txt?id=6215237837520896
> Kernel config:
> https://syzkaller.appspot.com/x/.config?id=-1280663959502969741
> compiler: gcc (GCC) 7.1.1 20170620
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+c7b0dde061c523bc4b0f@syzkaller.appspotmail.com
> It will help syzbot understand when the bug is fixed. See footer for
> details.
> If you forward the report, please keep this part and the footer.

Messed kernel output.

#syz dup: WARNING: refcount bug in sk_alloc



> R13: 0030656c69662f2e R14: 0000000000000005 R15: 2f30656c69662f2e
> ------------[ cut here ]------------
> ------------[ cut here ]------------
> refcount_t: increment on 0; use-after-free.
> refcount_t: underflow; use-after-free.
> WARNING: CPU: 0 PID: 4450 at lib/refcount.c:187
> refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:187
> WARNING: CPU: 1 PID: 4460 at lib/refcount.c:153 refcount_inc+0x47/0x50
> lib/refcount.c:153
> Kernel panic - not syncing: panic_on_warn set ...
>
> Modules linked in:
> CPU: 0 PID: 4450 Comm: syzkaller428798 Not tainted 4.16.0-rc6+ #40
> CPU: 1 PID: 4460 Comm: syzkaller428798 Not tainted 4.16.0-rc6+ #40
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 01/01/2011
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 01/01/2011
> Call Trace:
> RIP: 0010:refcount_inc+0x47/0x50 lib/refcount.c:153
>  __dump_stack lib/dump_stack.c:17 [inline]
>  dump_stack+0x194/0x24d lib/dump_stack.c:53
> RSP: 0018:ffff8801b534f860 EFLAGS: 00010286
> RAX: dffffc0000000008 RBX: ffff8801b1b8c184 RCX: ffffffff815ba4be
>  panic+0x1e4/0x41c kernel/panic.c:183
> RDX: 0000000000000000 RSI: 1ffff10036a69ebc RDI: 1ffff10036a69e91
> RBP: ffff8801b534f868 R08: 0000000000000000 R09: 0000000000000000
> R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801b534faf8
> R13: ffff8801b04db513 R14: ffff8801b1b8c180 R15: ffff8801b04db501
> FS:  00000000008e6880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>  __warn+0x1dc/0x200 kernel/panic.c:547
> CR2: 00000000006ea510 CR3: 00000001b106f005 CR4: 00000000001606e0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>  report_bug+0x1f4/0x2b0 lib/bug.c:186
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>  fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
> Call Trace:
>  fixup_bug arch/x86/kernel/traps.c:247 [inline]
>  do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
>  get_net include/net/net_namespace.h:204 [inline]
>  sk_alloc+0x3f9/0x1440 net/core/sock.c:1540
>  do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
>  invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986
> RIP: 0010:refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:187
> RSP: 0018:ffff8801b0e87728 EFLAGS: 00010286
> RAX: dffffc0000000008 RBX: 0000000000000000 RCX: ffffffff815ba4be
> RDX: 0000000000000000 RSI: 1ffff100361d0e95 RDI: 0000000000000293
> RBP: ffff8801b0e877b8 R08: 0000000000000000 R09: 0000000000000000
> R10: ffff8801b0e87850 R11: 0000000000000000 R12: 1ffff100361d0ee6
>  inet_create+0x47c/0xf50 net/ipv4/af_inet.c:320
> R13: 00000000ffffffff R14: 0000000000000001 R15: ffff8801b0816204
>  __sock_create+0x4d4/0x850 net/socket.c:1285
>  sock_create net/socket.c:1325 [inline]
>  SYSC_socket net/socket.c:1355 [inline]
>  SyS_socket+0xeb/0x1d0 net/socket.c:1335
>  refcount_dec_and_test+0x1a/0x20 lib/refcount.c:212
>  put_net include/net/net_namespace.h:222 [inline]
>  __sk_destruct+0x560/0x920 net/core/sock.c:1592
>  do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
>  sk_destruct+0x47/0x80 net/core/sock.c:1601
>  entry_SYSCALL_64_after_hwframe+0x42/0xb7
>  __sk_free+0xf1/0x2b0 net/core/sock.c:1612
> RIP: 0033:0x44ac67
>  sk_free+0x2a/0x40 net/core/sock.c:1623
> RSP: 002b:00007ffcd4f45588 EFLAGS: 00000202
>  sock_put include/net/sock.h:1660 [inline]
>  tcp_close+0x967/0x1190 net/ipv4/tcp.c:2321
>  ORIG_RAX: 0000000000000029
> RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000044ac67
> RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002
> RBP: 00007ffcd4f456b0 R08: 0000000000000000 R09: 0000000000000001
> R10: 0000000000000006 R11: 0000000000000202 R12: 0000000000000002
>  inet_release+0xed/0x1c0 net/ipv4/af_inet.c:427
> R13: 0000000000000002 R14: 000000000000b38f R15: 00007ffcd4f456d8
>  sock_release+0x8d/0x1e0 net/socket.c:594
> Code:
> be
>  sock_close+0x16/0x20 net/socket.c:1149
> fe
>  __fput+0x327/0x7e0 fs/file_table.c:209
> 5b
> 5d
> c3
>  ____fput+0x15/0x20 fs/file_table.c:243
> e8
>  task_work_run+0x199/0x270 kernel/task_work.c:113
> 5a
> 3c
> be
> fe
>  tracehook_notify_resume include/linux/tracehook.h:191 [inline]
>  exit_to_usermode_loop+0x275/0x2f0 arch/x86/entry/common.c:166
> 80
> 3d
> 91
>  prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
>  syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
>  do_syscall_64+0x6ec/0x940 arch/x86/entry/common.c:292
> f5
> 84
> 05
> 00 75 ea e8 4c 3c be
> fe
> 48
> c7
> c7
>  entry_SYSCALL_64_after_hwframe+0x42/0xb7
> 80
> RIP: 0033:0x406fe0
> 78
> RSP: 002b:00007ffcd4f45588 EFLAGS: 00000246
> e5
>  ORIG_RAX: 0000000000000003
> 86
> RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000406fe0
> c6
> RDX: 00000000000000e0 RSI: 00007ffcd4f45e70 RDI: 0000000000000003
> 05
> RBP: 00007ffcd4f456b0 R08: 00007ffcd4f455b0 R09: 0000000000000001
> 7c
> R10: 00007ffcd4f456b0 R11: 0000000000000246 R12: 00000000006de4c0
> R13: 00000000006dde40 R14: 0000000000001380 R15: 00007ffcd4f456d8
> f5 84 05 01 e8 f9 47 8e fe <0f> 0b eb ce 0f 1f 44 00 00 55 48 89 e5 41 57 41
> 56 41 55 41 54
> ---[ end trace 04af8119701e2164 ]---
> Dumping ftrace buffer:
>    (ftrace buffer empty)
> Kernel Offset: disabled
> Rebooting in 86400 seconds..
>
>
> ---
> This bug is generated by a dumb bot. It may contain errors.
> See https://goo.gl/tpsmEJ for details.
> Direct all questions to syzkaller@googlegroups.com.
>
> syzbot will keep track of this bug report.
> If you forgot to add the Reported-by tag, once the fix for this bug is
> merged
> into any tree, please reply to this email with:
> #syz fix: exact-commit-title
> If you want to test a patch for this bug, please reply with:
> #syz test: git://repo/address.git branch
> and provide the patch inline or as an attachment.
> To mark this as a duplicate of another syzbot report, please reply with:
> #syz dup: exact-subject-of-another-report
> If it's a one-off invalid bug report, please reply with:
> #syz invalid
> Note: if the crash happens again, it will cause creation of a new bug
> report.
> Note: all commands must start from beginning of the line in the email body.
>
> --
> You received this message because you are subscribed to the Google Groups
> "syzkaller-bugs" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to syzkaller-bugs+unsubscribe@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/syzkaller-bugs/001a113ed5546fb3c00568944220%40google.com.
> For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply

* Re: Re: WARNING: refcount bug in should_fail
From: syzbot @ 2018-04-01 10:32 UTC (permalink / raw)
  To: 'Dmitry Vyukov' via syzkaller-bugs
  Cc: ebiederm, linux-fsdevel, linux-mm, netdev, penguin-kernel,
	syzkaller-bugs, viro
In-Reply-To: <CACT4Y+aSEsoS60A0O0Ypg=kwRZV10SzUELbcG7KEkaTV7aMU5Q@mail.gmail.com>

> On Sun, Mar 4, 2018 at 6:57 AM, Tetsuo Handa
> <penguin-kernel@i-love.sakura.ne.jp> wrote:
>> Switching from mm to fsdevel, for this report says that put_net(net) in
>> rpc_kill_sb() made net->count < 0 when mount_ns() failed due to
>> register_shrinker() failure.

>> Relevant commits will be
>> commit 9ee332d99e4d5a97 ("sget(): handle failures of  
>> register_shrinker()") and
>> commit d91ee87d8d85a080 ("vfs: Pass data, ns, and ns->userns to  
>> mount_ns.").

>> When sget_userns() in mount_ns() failed, mount_ns() returns an error  
>> code to
>> the caller without calling fill_super(). That is, get_net(sb->s_fs_info)  
>> was
>> not called by rpc_fill_super() (via fill_super callback passed to  
>> mount_ns())
>> but put_net(sb->s_fs_info) is called by rpc_kill_sb() (via fs->kill_sb()  
>> from
>> deactivate_locked_super()).

>> ----------
>> static struct dentry *
>> rpc_mount(struct file_system_type *fs_type,
>>                  int flags, const char *dev_name, void *data)
>> {
>>          struct net *net = current->nsproxy->net_ns;
>>          return mount_ns(fs_type, flags, data, net, net->user_ns,  
>> rpc_fill_super);
>> }
>> ----------

> Messed kernel output, this is definitely not in should_fail.

> #syz dup: WARNING: refcount bug in sk_alloc

Can't find the corresponding bug.



>> syzbot wrote:
>>> Hello,

>>> syzbot hit the following crash on bpf-next commit
>>> 6f1b5a2b58d8470e5a8b25ab29f5fdb4616ffff8 (Tue Feb 27 04:11:23 2018  
>>> +0000)
>>> Merge branch 'bpf-kselftest-improvements'

>>> C reproducer is attached.
>>> syzkaller reproducer is attached.
>>> Raw console output is attached.
>>> compiler: gcc (GCC) 7.1.1 20170620
>>> .config is attached.

>>> IMPORTANT: if you fix the bug, please add the following tag to the  
>>> commit:
>>> Reported-by: syzbot+84371b6062cb639d797e@syzkaller.appspotmail.com
>>> It will help syzbot understand when the bug is fixed. See footer for
>>> details.
>>> If you forward the report, please keep this part and the footer.

>>> ------------[ cut here ]------------
>>> FAULT_INJECTION: forcing a failure.
>>> name failslab, interval 1, probability 0, space 0, times 0
>>> refcount_t: underflow; use-after-free.
>>> CPU: 1 PID: 4239 Comm: syzkaller149381 Not tainted 4.16.0-rc2+ #20
>>> WARNING: CPU: 0 PID: 4237 at lib/refcount.c:187
>>> refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:187
>>> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
>>> Google 01/01/2011
>>> Call Trace:
>>> Kernel panic - not syncing: panic_on_warn set ...

>>>    __dump_stack lib/dump_stack.c:17 [inline]
>>>    dump_stack+0x194/0x24d lib/dump_stack.c:53
>>>    fail_dump lib/fault-inject.c:51 [inline]
>>>    should_fail+0x8c0/0xa40 lib/fault-inject.c:149
>>>    should_failslab+0xec/0x120 mm/failslab.c:32
>>>    slab_pre_alloc_hook mm/slab.h:422 [inline]
>>>    slab_alloc mm/slab.c:3365 [inline]
>>>    __do_kmalloc mm/slab.c:3703 [inline]
>>>    __kmalloc+0x63/0x760 mm/slab.c:3714
>>>    kmalloc include/linux/slab.h:517 [inline]
>>>    kzalloc include/linux/slab.h:701 [inline]
>>>    register_shrinker+0x10e/0x2d0 mm/vmscan.c:268
>>>    sget_userns+0xbbf/0xe40 fs/super.c:520
>>>    mount_ns+0x6d/0x190 fs/super.c:1029
>>>    rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1451
>>>    mount_fs+0x66/0x2d0 fs/super.c:1222
>>>    vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037
>>>    vfs_kern_mount fs/namespace.c:2509 [inline]
>>>    do_new_mount fs/namespace.c:2512 [inline]
>>>    do_mount+0xea4/0x2bb0 fs/namespace.c:2842
>>>    SYSC_mount fs/namespace.c:3058 [inline]
>>>    SyS_mount+0xab/0x120 fs/namespace.c:3035
>>>    do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
>>>    entry_SYSCALL_64_after_hwframe+0x42/0xb7
>>> RIP: 0033:0x4460f9
>>> RSP: 002b:00007fbcd769ad78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
>>> RAX: ffffffffffffffda RBX: 00000000006dcc6c RCX: 00000000004460f9
>>> RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000020000000
>>> RBP: 00007fbcd769ad80 R08: 00000000200000c0 R09: 0000000000003131
>>> R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc68
>>> R13: ffffffffffffffff R14: 0000000000000037 R15: 0030656c69662f2e
>>> CPU: 0 PID: 4237 Comm: syzkaller149381 Not tainted 4.16.0-rc2+ #20
>>> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
>>> Google 01/01/2011
>>> Call Trace:
>>>    __dump_stack lib/dump_stack.c:17 [inline]
>>>    dump_stack+0x194/0x24d lib/dump_stack.c:53
>>>    panic+0x1e4/0x41c kernel/panic.c:183
>>>    __warn+0x1dc/0x200 kernel/panic.c:547
>>>    report_bug+0x211/0x2d0 lib/bug.c:184
>>>    fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
>>>    fixup_bug arch/x86/kernel/traps.c:247 [inline]
>>>    do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
>>>    do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
>>>    invalid_op+0x58/0x80 arch/x86/entry/entry_64.S:957
>>> RIP: 0010:refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:187
>>> RSP: 0018:ffff8801b164f6d8 EFLAGS: 00010286
>>> RAX: dffffc0000000008 RBX: 0000000000000000 RCX: ffffffff815ac30e
>>> RDX: 0000000000000000 RSI: 1ffff100362c9e8b RDI: 1ffff100362c9e60
>>> RBP: ffff8801b164f768 R08: 0000000000000000 R09: 0000000000000000
>>> R10: ffff8801b164f610 R11: 0000000000000000 R12: 1ffff100362c9edc
>>> R13: 00000000ffffffff R14: 0000000000000001 R15: ffff8801ae924044
>>>    refcount_dec_and_test+0x1a/0x20 lib/refcount.c:212
>>>    put_net include/net/net_namespace.h:220 [inline]
>>>    rpc_kill_sb+0x253/0x3c0 net/sunrpc/rpc_pipe.c:1473
>>>    deactivate_locked_super+0x88/0xd0 fs/super.c:312
>>>    sget_userns+0xbda/0xe40 fs/super.c:522
>>>    mount_ns+0x6d/0x190 fs/super.c:1029
>>>    rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1451
>>>    mount_fs+0x66/0x2d0 fs/super.c:1222
>>>    vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037
>>>    vfs_kern_mount fs/namespace.c:2509 [inline]
>>>    do_new_mount fs/namespace.c:2512 [inline]
>>>    do_mount+0xea4/0x2bb0 fs/namespace.c:2842
>>>    SYSC_mount fs/namespace.c:3058 [inline]
>>>    SyS_mount+0xab/0x120 fs/namespace.c:3035
>>>    do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
>>>    entry_SYSCALL_64_after_hwframe+0x42/0xb7
>>> RIP: 0033:0x4460f9
>>> RSP: 002b:00007fbcd76dcd78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
>>> RAX: ffffffffffffffda RBX: 00000000006dcc3c RCX: 00000000004460f9
>>> RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000020000000
>>> RBP: 00007fbcd76dcd80 R08: 00000000200000c0 R09: 0000000000003131
>>> R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc38
>>> R13: ffffffffffffffff R14: 0000000000000028 R15: 0030656c69662f2e
>>> Dumping ftrace buffer:
>>>      (ftrace buffer empty)
>>> Kernel Offset: disabled
>>> Rebooting in 86400 seconds..


>>> ---
>>> This bug is generated by a dumb bot. It may contain errors.
>>> See https://goo.gl/tpsmEJ for details.
>>> Direct all questions to syzkaller@googlegroups.com.

>>> syzbot will keep track of this bug report.
>>> If you forgot to add the Reported-by tag, once the fix for this bug is
>>> merged
>>> into any tree, please reply to this email with:
>>> #syz fix: exact-commit-title
>>> If you want to test a patch for this bug, please reply with:
>>> #syz test: git://repo/address.git branch
>>> and provide the patch inline or as an attachment.
>>> To mark this as a duplicate of another syzbot report, please reply with:
>>> #syz dup: exact-subject-of-another-report
>>> If it's a one-off invalid bug report, please reply with:
>>> #syz invalid
>>> Note: if the crash happens again, it will cause creation of a new bug
>>> report.
>>> Note: all commands must start from beginning of the line in the email  
>>> body.


>> --
>> You received this message because you are subscribed to the Google  
>> Groups "syzkaller-bugs" group.
>> To unsubscribe from this group and stop receiving emails from it, send  
>> an email to syzkaller-bugs+unsubscribe@googlegroups.com.
>> To view this discussion on the web visit  
>> https://groups.google.com/d/msgid/syzkaller-bugs/201803041457.GBJ69774.OVOSOLFHQMJFFt%40I-love.SAKURA.ne.jp.
>> For more options, visit https://groups.google.com/d/optout.

> --
> You received this message because you are subscribed to the Google  
> Groups "syzkaller-bugs" group.
> To unsubscribe from this group and stop receiving emails from it, send an  
> email to syzkaller-bugs+unsubscribe@googlegroups.com.
> To view this discussion on the web visit  
> https://groups.google.com/d/msgid/syzkaller-bugs/CACT4Y%2BaSEsoS60A0O0Ypg%3DkwRZV10SzUELbcG7KEkaTV7aMU5Q%40mail.gmail.com.
> For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply

* Re: WARNING: refcount bug in should_fail
From: Dmitry Vyukov @ 2018-04-01 10:32 UTC (permalink / raw)
  To: Tetsuo Handa
  Cc: Al Viro, Eric W. Biederman, linux-fsdevel, netdev, Linux-MM,
	syzkaller-bugs
In-Reply-To: <201803041457.GBJ69774.OVOSOLFHQMJFFt@I-love.SAKURA.ne.jp>

On Sun, Mar 4, 2018 at 6:57 AM, Tetsuo Handa
<penguin-kernel@i-love.sakura.ne.jp> wrote:
> Switching from mm to fsdevel, for this report says that put_net(net) in
> rpc_kill_sb() made net->count < 0 when mount_ns() failed due to
> register_shrinker() failure.
>
> Relevant commits will be
> commit 9ee332d99e4d5a97 ("sget(): handle failures of register_shrinker()") and
> commit d91ee87d8d85a080 ("vfs: Pass data, ns, and ns->userns to mount_ns.").
>
> When sget_userns() in mount_ns() failed, mount_ns() returns an error code to
> the caller without calling fill_super(). That is, get_net(sb->s_fs_info) was
> not called by rpc_fill_super() (via fill_super callback passed to mount_ns())
> but put_net(sb->s_fs_info) is called by rpc_kill_sb() (via fs->kill_sb() from
> deactivate_locked_super()).
>
> ----------
> static struct dentry *
> rpc_mount(struct file_system_type *fs_type,
>                 int flags, const char *dev_name, void *data)
> {
>         struct net *net = current->nsproxy->net_ns;
>         return mount_ns(fs_type, flags, data, net, net->user_ns, rpc_fill_super);
> }
> ----------

Messed kernel output, this is definitely not in should_fail.

#syz dup: WARNING: refcount bug in sk_alloc


> syzbot wrote:
>> Hello,
>>
>> syzbot hit the following crash on bpf-next commit
>> 6f1b5a2b58d8470e5a8b25ab29f5fdb4616ffff8 (Tue Feb 27 04:11:23 2018 +0000)
>> Merge branch 'bpf-kselftest-improvements'
>>
>> C reproducer is attached.
>> syzkaller reproducer is attached.
>> Raw console output is attached.
>> compiler: gcc (GCC) 7.1.1 20170620
>> .config is attached.
>>
>> IMPORTANT: if you fix the bug, please add the following tag to the commit:
>> Reported-by: syzbot+84371b6062cb639d797e@syzkaller.appspotmail.com
>> It will help syzbot understand when the bug is fixed. See footer for
>> details.
>> If you forward the report, please keep this part and the footer.
>>
>> ------------[ cut here ]------------
>> FAULT_INJECTION: forcing a failure.
>> name failslab, interval 1, probability 0, space 0, times 0
>> refcount_t: underflow; use-after-free.
>> CPU: 1 PID: 4239 Comm: syzkaller149381 Not tainted 4.16.0-rc2+ #20
>> WARNING: CPU: 0 PID: 4237 at lib/refcount.c:187
>> refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:187
>> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
>> Google 01/01/2011
>> Call Trace:
>> Kernel panic - not syncing: panic_on_warn set ...
>>
>>   __dump_stack lib/dump_stack.c:17 [inline]
>>   dump_stack+0x194/0x24d lib/dump_stack.c:53
>>   fail_dump lib/fault-inject.c:51 [inline]
>>   should_fail+0x8c0/0xa40 lib/fault-inject.c:149
>>   should_failslab+0xec/0x120 mm/failslab.c:32
>>   slab_pre_alloc_hook mm/slab.h:422 [inline]
>>   slab_alloc mm/slab.c:3365 [inline]
>>   __do_kmalloc mm/slab.c:3703 [inline]
>>   __kmalloc+0x63/0x760 mm/slab.c:3714
>>   kmalloc include/linux/slab.h:517 [inline]
>>   kzalloc include/linux/slab.h:701 [inline]
>>   register_shrinker+0x10e/0x2d0 mm/vmscan.c:268
>>   sget_userns+0xbbf/0xe40 fs/super.c:520
>>   mount_ns+0x6d/0x190 fs/super.c:1029
>>   rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1451
>>   mount_fs+0x66/0x2d0 fs/super.c:1222
>>   vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037
>>   vfs_kern_mount fs/namespace.c:2509 [inline]
>>   do_new_mount fs/namespace.c:2512 [inline]
>>   do_mount+0xea4/0x2bb0 fs/namespace.c:2842
>>   SYSC_mount fs/namespace.c:3058 [inline]
>>   SyS_mount+0xab/0x120 fs/namespace.c:3035
>>   do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
>>   entry_SYSCALL_64_after_hwframe+0x42/0xb7
>> RIP: 0033:0x4460f9
>> RSP: 002b:00007fbcd769ad78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
>> RAX: ffffffffffffffda RBX: 00000000006dcc6c RCX: 00000000004460f9
>> RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000020000000
>> RBP: 00007fbcd769ad80 R08: 00000000200000c0 R09: 0000000000003131
>> R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc68
>> R13: ffffffffffffffff R14: 0000000000000037 R15: 0030656c69662f2e
>> CPU: 0 PID: 4237 Comm: syzkaller149381 Not tainted 4.16.0-rc2+ #20
>> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
>> Google 01/01/2011
>> Call Trace:
>>   __dump_stack lib/dump_stack.c:17 [inline]
>>   dump_stack+0x194/0x24d lib/dump_stack.c:53
>>   panic+0x1e4/0x41c kernel/panic.c:183
>>   __warn+0x1dc/0x200 kernel/panic.c:547
>>   report_bug+0x211/0x2d0 lib/bug.c:184
>>   fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
>>   fixup_bug arch/x86/kernel/traps.c:247 [inline]
>>   do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
>>   do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
>>   invalid_op+0x58/0x80 arch/x86/entry/entry_64.S:957
>> RIP: 0010:refcount_sub_and_test+0x167/0x1b0 lib/refcount.c:187
>> RSP: 0018:ffff8801b164f6d8 EFLAGS: 00010286
>> RAX: dffffc0000000008 RBX: 0000000000000000 RCX: ffffffff815ac30e
>> RDX: 0000000000000000 RSI: 1ffff100362c9e8b RDI: 1ffff100362c9e60
>> RBP: ffff8801b164f768 R08: 0000000000000000 R09: 0000000000000000
>> R10: ffff8801b164f610 R11: 0000000000000000 R12: 1ffff100362c9edc
>> R13: 00000000ffffffff R14: 0000000000000001 R15: ffff8801ae924044
>>   refcount_dec_and_test+0x1a/0x20 lib/refcount.c:212
>>   put_net include/net/net_namespace.h:220 [inline]
>>   rpc_kill_sb+0x253/0x3c0 net/sunrpc/rpc_pipe.c:1473
>>   deactivate_locked_super+0x88/0xd0 fs/super.c:312
>>   sget_userns+0xbda/0xe40 fs/super.c:522
>>   mount_ns+0x6d/0x190 fs/super.c:1029
>>   rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1451
>>   mount_fs+0x66/0x2d0 fs/super.c:1222
>>   vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037
>>   vfs_kern_mount fs/namespace.c:2509 [inline]
>>   do_new_mount fs/namespace.c:2512 [inline]
>>   do_mount+0xea4/0x2bb0 fs/namespace.c:2842
>>   SYSC_mount fs/namespace.c:3058 [inline]
>>   SyS_mount+0xab/0x120 fs/namespace.c:3035
>>   do_syscall_64+0x280/0x940 arch/x86/entry/common.c:287
>>   entry_SYSCALL_64_after_hwframe+0x42/0xb7
>> RIP: 0033:0x4460f9
>> RSP: 002b:00007fbcd76dcd78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
>> RAX: ffffffffffffffda RBX: 00000000006dcc3c RCX: 00000000004460f9
>> RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000020000000
>> RBP: 00007fbcd76dcd80 R08: 00000000200000c0 R09: 0000000000003131
>> R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc38
>> R13: ffffffffffffffff R14: 0000000000000028 R15: 0030656c69662f2e
>> Dumping ftrace buffer:
>>     (ftrace buffer empty)
>> Kernel Offset: disabled
>> Rebooting in 86400 seconds..
>>
>>
>> ---
>> This bug is generated by a dumb bot. It may contain errors.
>> See https://goo.gl/tpsmEJ for details.
>> Direct all questions to syzkaller@googlegroups.com.
>>
>> syzbot will keep track of this bug report.
>> If you forgot to add the Reported-by tag, once the fix for this bug is
>> merged
>> into any tree, please reply to this email with:
>> #syz fix: exact-commit-title
>> If you want to test a patch for this bug, please reply with:
>> #syz test: git://repo/address.git branch
>> and provide the patch inline or as an attachment.
>> To mark this as a duplicate of another syzbot report, please reply with:
>> #syz dup: exact-subject-of-another-report
>> If it's a one-off invalid bug report, please reply with:
>> #syz invalid
>> Note: if the crash happens again, it will cause creation of a new bug
>> report.
>> Note: all commands must start from beginning of the line in the email body.
>>
>
> --
> You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/201803041457.GBJ69774.OVOSOLFHQMJFFt%40I-love.SAKURA.ne.jp.
> For more options, visit https://groups.google.com/d/optout.

^ permalink raw reply

* Re: BUG: corrupted list in sctp_association_free
From: Dmitry Vyukov @ 2018-04-01 10:29 UTC (permalink / raw)
  To: Neil Horman
  Cc: Xin Long, syzbot, davem, LKML, linux-sctp, network dev,
	syzkaller-bugs, Vlad Yasevich
In-Reply-To: <20180313111245.GB18164@hmswarspite.think-freely.org>

On Tue, Mar 13, 2018 at 12:12 PM, Neil Horman <nhorman@tuxdriver.com> wrote:
> On Tue, Mar 13, 2018 at 02:09:09PM +0300, Dmitry Vyukov wrote:
>> On Tue, Mar 13, 2018 at 1:44 PM, Xin Long <lucien.xin@gmail.com> wrote:
>> > On Tue, Mar 13, 2018 at 3:34 PM, syzbot
>> > <syzbot+e56a5d45f832ef33ad2f@syzkaller.appspotmail.com> wrote:
>> >> Hello,
>> >>
>> >> syzbot hit the following crash on net-next commit
>> >> fd372a7a9e5e9d8011a0222d10edd3523abcd3b1 (Thu Mar 8 19:43:48 2018 +0000)
>> >> Merge tag 'mlx5-updates-2018-02-28-2' of
>> >> git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux
>> >>
>> >> Unfortunately, I don't have any reproducer for this crash yet.
>> >> Raw console output is attached.
>> >> compiler: gcc (GCC) 7.1.1 20170620
>> >> .config is attached.
>> >>
>> >> IMPORTANT: if you fix the bug, please add the following tag to the commit:
>> >> Reported-by: syzbot+e56a5d45f832ef33ad2f@syzkaller.appspotmail.com
>> >> It will help syzbot understand when the bug is fixed. See footer for
>> >> details.
>> >> If you forward the report, please keep this part and the footer.
>> >>
>> >> selinux_nlmsg_perm: 1 callbacks suppressed
>> >> SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0
>> >> sclass=netlink_route_socket pig=12502 comm=syz-executor3
>> >> SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0
>> >> sclass=netlink_route_socket pig=12528 comm=syz-executor3
>> >> list_del corruption, 00000000fcc5fb27->next is LIST_POISON1
>> >> (00000000cb16e51d)
>> >> ------------[ cut here ]------------
>> >> kernel BUG at lib/list_debug.c:47!
>> >> invalid opcode: 0000 [#1] SMP KASAN
>> >> Dumping ftrace buffer:
>> >>    (ftrace buffer empty)
>> >> Modules linked in:
>> >> CPU: 0 PID: 12537 Comm: syz-executor2 Not tainted 4.16.0-rc4+ #258
>> >> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
>> >> Google 01/01/2011
>> >> RIP: 0010:__list_del_entry_valid+0xd3/0x150 lib/list_debug.c:45
>> >> RSP: 0018:ffff8801b6387778 EFLAGS: 00010286
>> >> RAX: 000000000000004e RBX: dead000000000200 RCX: 0000000000000000
>> >> RDX: 000000000000004e RSI: ffffc90002ed6000 RDI: ffffed0036c70ee3
>> >> RBP: ffff8801b6387790 R08: 1ffff10036c70e3b R09: 0000000000000000
>> >> R10: 0000000000000000 R11: 0000000000000000 R12: dead000000000100
>> >> R13: ffff8801d3164000 R14: ffff8801d8502220 R15: ffff8801b6387c58
>> >> FS:  00007ff42042f700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
>> >> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> >> CR2: 00007ff42040ddb8 CR3: 00000001bd840003 CR4: 00000000001606f0
>> >> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>> >> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>> >> Call Trace:
>> >>  __list_del_entry include/linux/list.h:117 [inline]
>> >>  list_del include/linux/list.h:125 [inline]
>> >>  sctp_association_free+0x133/0x930 net/sctp/associola.c:341
>> >>  sctp_sendmsg+0xc67/0x1a80 net/sctp/socket.c:2075
>> >>  inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:763
>> >>  sock_sendmsg_nosec net/socket.c:629 [inline]
>> >>  sock_sendmsg+0xca/0x110 net/socket.c:639
>> >>  SYSC_sendto+0x361/0x5c0 net/socket.c:1748
>> >>  SyS_sendto+0x40/0x50 net/socket.c:1716
>> >>  do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
>> >>  entry_SYSCALL_64_after_hwframe+0x42/0xb7
>> >> RIP: 0033:0x453e69
>> >> RSP: 002b:00007ff42042ec68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
>> >> RAX: ffffffffffffffda RBX: 00007ff42042f6d4 RCX: 0000000000453e69
>> >> RDX: 0000000000000001 RSI: 0000000020000340 RDI: 0000000000000015
>> >> RBP: 000000000072c0c8 R08: 00000000204d9000 R09: 000000000000001c
>> >> R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
>> >> R13: 00000000000004cd R14: 00000000006f73d8 R15: 0000000000000003
>> >> Code: 8f 00 00 00 49 8b 54 24 08 48 39 f2 75 3b 48 83 c4 08 b8 01 00 00 00
>> >> 5b 41 5c 5d c3 4c 89 e2 48 c7 c7 c0 7c 40 86 e8 75 f6 fb fe <0f> 0b 48 c7 c7
>> >> 20 7d 40 86 e8 67 f6 fb fe 0f 0b 48 c7 c7 80 7d
>> >> RIP: __list_del_entry_valid+0xd3/0x150 lib/list_debug.c:45 RSP:
>> >> ffff8801b6387778
>> >> ---[ end trace a6b157f61f9bd43a ]---
>> >> Kernel panic - not syncing: Fatal exception
>> >> Dumping ftrace buffer:
>> >>    (ftrace buffer empty)
>> >> Kernel Offset: disabled
>> >> Rebooting in 86400 seconds..
>> >>
>> >>
>> >> ---
>> >> This bug is generated by a dumb bot. It may contain errors.
>> >> See https://goo.gl/tpsmEJ for details.
>> >> Direct all questions to syzkaller@googlegroups.com.
>> >>
>> >> syzbot will keep track of this bug report.
>> >> If you forgot to add the Reported-by tag, once the fix for this bug is
>> >> merged
>> >> into any tree, please reply to this email with:
>> >> #syz fix: exact-commit-title
>> >> To mark this as a duplicate of another syzbot report, please reply with:
>> >> #syz dup: exact-subject-of-another-report
>> >> If it's a one-off invalid bug report, please reply with:
>> >> #syz invalid
>> >> Note: if the crash happens again, it will cause creation of a new bug
>> >> report.
>> >> Note: all commands must start from beginning of the line in the email body.
>> > I'd think the patch Neil just posted would fix it.
>>
>>
>> Hi Xin,
>>
>> Could you point me to that commit? We need to tell syzbot about it.
>>
>> Thanks
> Its not been pulled in yet, but this is the email thread:
> https://marc.info/?l=linux-netdev&m=152093814606747&w=2
>
> I agree this patch should fix the crash syzbot noted


#syz fix: sctp: fix error return code in sctp_sendmsg_new_asoc()

^ permalink raw reply

* [PATCH net-next v2] ipvs: fix multiplicative hashing in sh/dh/lblc/lblcr algorithms
From: Vincent Bernat @ 2018-04-01 10:27 UTC (permalink / raw)
  To: Julian Anastasov, Wensong Zhang, Simon Horman, David S. Miller,
	netdev, lvs-devel
  Cc: Vincent Bernat
In-Reply-To: <alpine.LFD.2.20.1804011037200.1933@ja.home.ssi.bg>

The sh/dh/lblc/lblcr algorithms are using Knuth's multiplicative
hashing incorrectly. Replace its use by the hash_32() macro, which
correctly implements this algorithm. It doesn't use the same constant,
but it shouldn't matter.

Signed-off-by: Vincent Bernat <vincent@bernat.im>
---
 net/netfilter/ipvs/ip_vs_dh.c    | 3 ++-
 net/netfilter/ipvs/ip_vs_lblc.c  | 3 ++-
 net/netfilter/ipvs/ip_vs_lblcr.c | 3 ++-
 net/netfilter/ipvs/ip_vs_sh.c    | 3 ++-
 4 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/net/netfilter/ipvs/ip_vs_dh.c b/net/netfilter/ipvs/ip_vs_dh.c
index 75f798f8e83b..dfea31fb10c5 100644
--- a/net/netfilter/ipvs/ip_vs_dh.c
+++ b/net/netfilter/ipvs/ip_vs_dh.c
@@ -43,6 +43,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/skbuff.h>
+#include <linux/hash.h>
 
 #include <net/ip_vs.h>
 
@@ -81,7 +82,7 @@ static inline unsigned int ip_vs_dh_hashkey(int af, const union nf_inet_addr *ad
 		addr_fold = addr->ip6[0]^addr->ip6[1]^
 			    addr->ip6[2]^addr->ip6[3];
 #endif
-	return (ntohl(addr_fold)*2654435761UL) & IP_VS_DH_TAB_MASK;
+	return hash_32(ntohl(addr_fold),  IP_VS_DH_TAB_BITS);
 }
 
 
diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
index 3057e453bf31..08147fc6400c 100644
--- a/net/netfilter/ipvs/ip_vs_lblc.c
+++ b/net/netfilter/ipvs/ip_vs_lblc.c
@@ -48,6 +48,7 @@
 #include <linux/kernel.h>
 #include <linux/skbuff.h>
 #include <linux/jiffies.h>
+#include <linux/hash.h>
 
 /* for sysctl */
 #include <linux/fs.h>
@@ -160,7 +161,7 @@ ip_vs_lblc_hashkey(int af, const union nf_inet_addr *addr)
 		addr_fold = addr->ip6[0]^addr->ip6[1]^
 			    addr->ip6[2]^addr->ip6[3];
 #endif
-	return (ntohl(addr_fold)*2654435761UL) & IP_VS_LBLC_TAB_MASK;
+	return hash_32(ntohl(addr_fold), IP_VS_LBLC_TAB_BITS);
 }
 
 
diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
index 92adc04557ed..9b6a6c9e9cfa 100644
--- a/net/netfilter/ipvs/ip_vs_lblcr.c
+++ b/net/netfilter/ipvs/ip_vs_lblcr.c
@@ -47,6 +47,7 @@
 #include <linux/jiffies.h>
 #include <linux/list.h>
 #include <linux/slab.h>
+#include <linux/hash.h>
 
 /* for sysctl */
 #include <linux/fs.h>
@@ -323,7 +324,7 @@ ip_vs_lblcr_hashkey(int af, const union nf_inet_addr *addr)
 		addr_fold = addr->ip6[0]^addr->ip6[1]^
 			    addr->ip6[2]^addr->ip6[3];
 #endif
-	return (ntohl(addr_fold)*2654435761UL) & IP_VS_LBLCR_TAB_MASK;
+	return hash_32(ntohl(addr_fold), IP_VS_LBLCR_TAB_BITS);
 }
 
 
diff --git a/net/netfilter/ipvs/ip_vs_sh.c b/net/netfilter/ipvs/ip_vs_sh.c
index 16aaac6eedc9..1e01c782583a 100644
--- a/net/netfilter/ipvs/ip_vs_sh.c
+++ b/net/netfilter/ipvs/ip_vs_sh.c
@@ -96,7 +96,8 @@ ip_vs_sh_hashkey(int af, const union nf_inet_addr *addr,
 		addr_fold = addr->ip6[0]^addr->ip6[1]^
 			    addr->ip6[2]^addr->ip6[3];
 #endif
-	return (offset + (ntohs(port) + ntohl(addr_fold))*2654435761UL) &
+	return (offset + hash_32(ntohs(port) + ntohl(addr_fold),
+				 IP_VS_SH_TAB_BITS)) &
 		IP_VS_SH_TAB_MASK;
 }
 
-- 
2.16.3

^ permalink raw reply related

* Re: [PATCH net-next v1] ipvs: fix multiplicative hashing in sh/dh/lblc/lblcr algorithms
From: Vincent Bernat @ 2018-04-01 10:16 UTC (permalink / raw)
  To: Julian Anastasov
  Cc: Wensong Zhang, Simon Horman, David S. Miller, netdev, lvs-devel
In-Reply-To: <alpine.LFD.2.20.1804011037200.1933@ja.home.ssi.bg>

 ❦  1 avril 2018 11:11 +0300, Julian Anastasov <ja@ssi.bg> :

>> -	return (ntohl(addr_fold)*2654435761UL) & IP_VS_DH_TAB_MASK;
>> +	return ((ntohl(addr_fold)*2654435761U) >>
>> +		(32 - IP_VS_DH_TAB_BITS)) &
>> +		IP_VS_DH_TAB_MASK;
>
> 	Looks like the '& mask' part is not needed, still,
> it does not generate extra code. I see that other code uses
> hash_32(val, bits) from include/linux/hash.h but note that it
> used different ratio before Linux 4.7, in case someone backports
> this patch on old kernels. So, I don't have preference what should
> be used, may be return hash_32(ntohl(addr_fold), IP_VS_DH_TAB_BITS)
> is better.

I didn't notice this macro. I think this is a better option. Let me
amend the patch.
-- 
Don't stop with your first draft.
            - The Elements of Programming Style (Kernighan & Plauger)

^ permalink raw reply

* [RFC PATCH 3/3] virtio_net: make lower netdevs for virtio_bypass hidden
From: Si-Wei Liu @ 2018-04-01  9:13 UTC (permalink / raw)
  To: mst, jiri, stephen, alexander.h.duyck, davem, jesse.brandeburg,
	kubakici, jasowang, sridhar.samudrala, netdev, virtualization,
	virtio-dev
In-Reply-To: <1522573990-5242-1-git-send-email-si-wei.liu@oracle.com>

We should move virtio_bypass to a 1-upper-with-2-hidden-lower
driver model for greater compatibility with regard to preserving
userpsace API and ABI.

On the other hand, technically virtio_bypass should make stricter
check before automatically enslaving the corresponding virtual
function or passthrough device. It's more reasonable to pair
virtio_bypass instance with a VF or passthrough device 1:1,
rather than rely on searching for a random non-virtio netdev with
exact same MAC address. One possible way of doing it is to bind
virtio_bypass explicitly to a guest pci device by specifying
its <bus> and <slot>:<function> location. Changing BACKUP feature
to take these configs into account, such that verifying target
device for auto-enslavement no longer relies on the MAC address.

Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
---
 drivers/net/virtio_net.c        | 159 ++++++++++++++++++++++++++++++++++++----
 include/uapi/linux/virtio_net.h |   2 +
 2 files changed, 148 insertions(+), 13 deletions(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index f850cf6..c54a5bd 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -77,6 +77,8 @@ struct virtnet_stats {
 	u64 rx_packets;
 };
 
+static struct workqueue_struct *virtnet_bypass_wq;
+
 /* Internal representation of a send virtqueue */
 struct send_queue {
 	/* Virtqueue associated with this send _queue */
@@ -196,6 +198,13 @@ struct padded_vnet_hdr {
 	char padding[4];
 };
 
+struct virtnet_bypass_task {
+	struct work_struct	work;
+	unsigned long		event; 
+	struct net_device	*child_netdev;
+	struct net_device	*bypass_netdev;
+};
+
 /* Converting between virtqueue no. and kernel tx/rx queue no.
  * 0:rx0 1:tx0 2:rx1 3:tx1 ... 2N:rxN 2N+1:txN 2N+2:cvq
  */
@@ -2557,6 +2566,11 @@ struct virtnet_bypass_info {
 
 	/* spinlock while updating stats */
 	spinlock_t stats_lock;
+
+	int bus;
+	int slot;
+	int function;
+
 };
 
 static void virtnet_bypass_child_open(struct net_device *dev,
@@ -2822,10 +2836,13 @@ static void virtnet_bypass_ethtool_get_drvinfo(struct net_device *dev,
 	.get_link_ksettings     = virtnet_bypass_ethtool_get_link_ksettings,
 };
 
-static struct net_device *get_virtnet_bypass_bymac(struct net *net,
-						   const u8 *mac)
+static struct net_device *
+get_virtnet_bypass_bymac(struct net_device *child_netdev)
 {
+	struct net *net = dev_net(child_netdev);
 	struct net_device *dev;
+	struct virtnet_bypass_info *vbi;
+	int devfn;
 
 	ASSERT_RTNL();
 
@@ -2833,7 +2850,29 @@ static struct net_device *get_virtnet_bypass_bymac(struct net *net,
 		if (dev->netdev_ops != &virtnet_bypass_netdev_ops)
 			continue;       /* not a virtnet_bypass device */
 
-		if (ether_addr_equal(mac, dev->perm_addr))
+		if (!ether_addr_equal(child_netdev->dev_addr, dev->perm_addr))
+			continue;       /* not matching MAC address */
+
+		if (!child_netdev->dev.parent)
+			continue;
+
+		/* Is child_netdev a backup netdev ? */
+		if (child_netdev->dev.parent == dev->dev.parent)
+			return dev;
+
+		/* Avoid non pci devices as active netdev */
+		if (!dev_is_pci(child_netdev->dev.parent))
+			continue;
+
+		vbi = netdev_priv(dev);
+		devfn = PCI_DEVFN(vbi->slot, vbi->function);
+
+		netdev_info(dev, "bus %d slot %d func %d",
+			    vbi->bus, vbi->slot, vbi->function);
+
+		/* Need to match <bus>:<slot>.<function> */
+		if (pci_get_bus_and_slot(vbi->bus, devfn) ==
+		    to_pci_dev(child_netdev->dev.parent))
 			return dev;
 	}
 
@@ -2878,10 +2917,61 @@ static rx_handler_result_t virtnet_bypass_handle_frame(struct sk_buff **pskb)
 	return RX_HANDLER_ANOTHER;
 }
 
+static int virtnet_bypass_pregetname_child(struct net_device *child_netdev)
+{
+	struct net_device *dev;
+
+	if (child_netdev->addr_len != ETH_ALEN)
+		return NOTIFY_DONE;
+
+	/* We will use the MAC address to locate the virtnet_bypass netdev
+	 * to associate with the child netdev. If we don't find a matching
+	 * bypass netdev, move on.
+	 */
+	dev = get_virtnet_bypass_bymac(child_netdev);
+	if (!dev)
+		return NOTIFY_DONE;
+
+	if (child_netdev->dev.parent &&
+	    child_netdev->dev.parent != dev->dev.parent);
+		netdev_set_hidden(child_netdev);
+
+	return NOTIFY_OK;
+}
+
+static void virtnet_bypass_task_fn(struct work_struct *work)
+{
+	struct virtnet_bypass_task *task;
+	struct net_device *child_netdev;
+	int rc;
+
+	task = container_of(work, struct virtnet_bypass_task, work);
+	child_netdev = task->child_netdev;
+
+	switch (task->event) {
+	case NETDEV_REGISTER:
+		rc = hide_netdevice(child_netdev);
+		if (rc)
+			netdev_err(child_netdev,
+				   "hide netdev %s failed with error %#x",
+				   child_netdev->name, rc);
+
+		break;
+	case NETDEV_UNREGISTER:
+		unhide_netdevice(child_netdev);
+		break;
+	default:
+		break;
+	}
+	dev_put(child_netdev);
+	kfree(task);
+}
+
 static int virtnet_bypass_register_child(struct net_device *child_netdev)
 {
 	struct virtnet_bypass_info *vbi;
 	struct net_device *dev;
+	struct virtnet_bypass_task *task;
 	bool backup;
 	int ret;
 
@@ -2892,25 +2982,34 @@ static int virtnet_bypass_register_child(struct net_device *child_netdev)
 	 * to associate with the child netdev. If we don't find a matching
 	 * bypass netdev, move on.
 	 */
-	dev = get_virtnet_bypass_bymac(dev_net(child_netdev),
-				       child_netdev->perm_addr);
+	dev = get_virtnet_bypass_bymac(child_netdev);
 	if (!dev)
 		return NOTIFY_DONE;
 
 	vbi = netdev_priv(dev);
 	backup = (child_netdev->dev.parent == dev->dev.parent);
 	if (backup ? rtnl_dereference(vbi->backup_netdev) :
-			rtnl_dereference(vbi->active_netdev)) {
+		     rtnl_dereference(vbi->active_netdev)) {
 		netdev_info(dev,
 			    "%s attempting to join bypass dev when %s already present\n",
 			    child_netdev->name, backup ? "backup" : "active");
 		return NOTIFY_DONE;
 	}
 
-	/* Avoid non pci devices as active netdev */
-	if (!backup && (!child_netdev->dev.parent ||
-			!dev_is_pci(child_netdev->dev.parent)))
-		return NOTIFY_DONE;
+	/* Verify <bus>:<slot>.<function> info */
+	if (!backup && !(child_netdev->priv_flags & IFF_HIDDEN)) {
+		task = kzalloc(sizeof(*task), GFP_ATOMIC);
+		if (!task)
+			return NOTIFY_DONE;
+		task->event = NETDEV_REGISTER;
+		task->bypass_netdev = dev;
+		task->child_netdev = child_netdev;
+		INIT_WORK(&task->work, virtnet_bypass_task_fn);
+		queue_work(virtnet_bypass_wq, &task->work);
+		dev_hold(child_netdev);
+
+		return NOTIFY_OK;
+	}
 
 	ret = netdev_rx_handler_register(child_netdev,
 					 virtnet_bypass_handle_frame, dev);
@@ -2981,6 +3080,7 @@ static int virtnet_bypass_unregister_child(struct net_device *child_netdev)
 {
 	struct virtnet_bypass_info *vbi;
 	struct net_device *dev, *backup;
+	struct virtnet_bypass_task *task;
 
 	dev = get_virtnet_bypass_byref(child_netdev);
 	if (!dev)
@@ -3003,6 +3103,16 @@ static int virtnet_bypass_unregister_child(struct net_device *child_netdev)
 			dev->min_mtu = backup->min_mtu;
 			dev->max_mtu = backup->max_mtu;
 		}
+
+		task = kzalloc(sizeof(*task), GFP_ATOMIC);
+		if (task) {
+			task->event = NETDEV_UNREGISTER;
+			task->bypass_netdev = dev;
+			task->child_netdev = child_netdev;
+			INIT_WORK(&task->work, virtnet_bypass_task_fn);
+			queue_work(virtnet_bypass_wq, &task->work);
+			dev_hold(child_netdev);
+		}
 	}
 
 	dev_put(child_netdev);
@@ -3059,6 +3169,8 @@ static int virtnet_bypass_event(struct notifier_block *this,
 		return NOTIFY_DONE;
 
 	switch (event) {
+	case NETDEV_PRE_GETNAME:
+		return virtnet_bypass_pregetname_child(event_dev);
 	case NETDEV_REGISTER:
 		return virtnet_bypass_register_child(event_dev);
 	case NETDEV_UNREGISTER:
@@ -3076,11 +3188,12 @@ static int virtnet_bypass_event(struct notifier_block *this,
 	.notifier_call = virtnet_bypass_event,
 };
 
-static int virtnet_bypass_create(struct virtnet_info *vi)
+static int virtnet_bypass_create(struct virtnet_info *vi, int bsf)
 {
 	struct net_device *backup_netdev = vi->dev;
 	struct device *dev = &vi->vdev->dev;
 	struct net_device *bypass_netdev;
+	struct virtnet_bypass_info *vbi;
 	int res;
 
 	/* Alloc at least 2 queues, for now we are going with 16 assuming
@@ -3095,6 +3208,11 @@ static int virtnet_bypass_create(struct virtnet_info *vi)
 
 	dev_net_set(bypass_netdev, dev_net(backup_netdev));
 	SET_NETDEV_DEV(bypass_netdev, dev);
+	vbi = netdev_priv(bypass_netdev);
+
+	vbi->bus = (bsf >> 8) & 0xFF;
+	vbi->slot = (bsf >> 3) & 0x1F;
+	vbi->function = bsf & 0x7;
 
 	bypass_netdev->netdev_ops = &virtnet_bypass_netdev_ops;
 	bypass_netdev->ethtool_ops = &virtnet_bypass_ethtool_ops;
@@ -3183,7 +3301,7 @@ static int virtnet_probe(struct virtio_device *vdev)
 	struct net_device *dev;
 	struct virtnet_info *vi;
 	u16 max_queue_pairs;
-	int mtu;
+	int mtu, bsf;
 
 	/* Find if host supports multiqueue virtio_net device */
 	err = virtio_cread_feature(vdev, VIRTIO_NET_F_MQ,
@@ -3339,8 +3457,12 @@ static int virtnet_probe(struct virtio_device *vdev)
 	virtnet_init_settings(dev);
 
 	if (virtio_has_feature(vdev, VIRTIO_NET_F_BACKUP)) {
-		if (virtnet_bypass_create(vi) != 0)
+		bsf = virtio_cread16(vdev,
+				     offsetof(struct virtio_net_config,
+					      bsf2backup));
+		if (virtnet_bypass_create(vi, bsf) != 0)
 			goto free_vqs;
+		netdev_set_hidden(dev); 
 	}
 
 	err = register_netdev(dev);
@@ -3384,6 +3506,7 @@ static int virtnet_probe(struct virtio_device *vdev)
 	unregister_netdev(dev);
 free_bypass:
 	virtnet_bypass_destroy(vi);
+
 free_vqs:
 	cancel_delayed_work_sync(&vi->refill);
 	free_receive_page_frags(vi);
@@ -3517,6 +3640,12 @@ static __init int virtio_net_driver_init(void)
 	if (ret)
 		goto err_dead;
 
+	virtnet_bypass_wq = create_singlethread_workqueue("virtio_bypass");
+	if (!virtnet_bypass_wq) {
+		ret = -ENOMEM;
+		goto err_wq;
+	}
+
         ret = register_virtio_driver(&virtio_net_driver);
 	if (ret)
 		goto err_virtio;
@@ -3524,6 +3653,8 @@ static __init int virtio_net_driver_init(void)
 	register_netdevice_notifier(&virtnet_bypass_notifier);
 	return 0;
 err_virtio:
+	destroy_workqueue(virtnet_bypass_wq);
+err_wq:
 	cpuhp_remove_multi_state(CPUHP_VIRT_NET_DEAD);
 err_dead:
 	cpuhp_remove_multi_state(virtionet_online);
@@ -3535,6 +3666,8 @@ static __init int virtio_net_driver_init(void)
 static __exit void virtio_net_driver_exit(void)
 {
 	unregister_netdevice_notifier(&virtnet_bypass_notifier);
+	if (virtnet_bypass_wq)
+		destroy_workqueue(virtnet_bypass_wq);
 	unregister_virtio_driver(&virtio_net_driver);
 	cpuhp_remove_multi_state(CPUHP_VIRT_NET_DEAD);
 	cpuhp_remove_multi_state(virtionet_online);
diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
index aa40664..0827b7e 100644
--- a/include/uapi/linux/virtio_net.h
+++ b/include/uapi/linux/virtio_net.h
@@ -80,6 +80,8 @@ struct virtio_net_config {
 	__u16 max_virtqueue_pairs;
 	/* Default maximum transmit unit advice */
 	__u16 mtu;
+	/* Device at bus:slot.function backed up by virtio_net */
+	__u16 bsf2backup;
 } __attribute__((packed));
 
 /*
-- 
1.8.3.1

^ permalink raw reply related

* [RFC PATCH 2/3] netdev: kernel-only IFF_HIDDEN netdevice
From: Si-Wei Liu @ 2018-04-01  9:13 UTC (permalink / raw)
  To: mst, jiri, stephen, alexander.h.duyck, davem, jesse.brandeburg,
	kubakici, jasowang, sridhar.samudrala, netdev, virtualization,
	virtio-dev
In-Reply-To: <1522573990-5242-1-git-send-email-si-wei.liu@oracle.com>

Hidden netdevice is not visible to userspace such that
typical network utilites e.g. ip, ifconfig and et al,
cannot sense its existence or configure it. Internally
hidden netdev may associate with an upper level netdev
that userspace has access to. Although userspace cannot
manipulate the lower netdev directly, user may control
or configure the underlying hidden device through the
upper-level netdev. For identification purpose, the
kobject for hidden netdev still presents in the sysfs
hierarchy, however, no uevent message will be generated
when the sysfs entry is created, modified or destroyed.

For that end, a separate namescope needs to be carved
out for IFF_HIDDEN netdevs. As of now netdev name that
starts with colon i.e. ':' is invalid in userspace,
since socket ioctls such as SIOCGIFCONF use ':' as the
separator for ifname. The absence of namescope started
with ':' can rightly be used as the namescope for
the kernel-only IFF_HIDDEN netdevs.

Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
---
 include/linux/netdevice.h   |  12 ++
 include/net/net_namespace.h |   2 +
 net/core/dev.c              | 281 ++++++++++++++++++++++++++++++++++++++------
 net/core/net_namespace.c    |   1 +
 4 files changed, 263 insertions(+), 33 deletions(-)

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index ef789e1..1a70f3a 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1380,6 +1380,7 @@ struct net_device_ops {
  * @IFF_PHONY_HEADROOM: the headroom value is controlled by an external
  *	entity (i.e. the master device for bridged veth)
  * @IFF_MACSEC: device is a MACsec device
+ * @IFF_HIDDEN: device is not visible to userspace
  */
 enum netdev_priv_flags {
 	IFF_802_1Q_VLAN			= 1<<0,
@@ -1410,6 +1411,7 @@ enum netdev_priv_flags {
 	IFF_RXFH_CONFIGURED		= 1<<25,
 	IFF_PHONY_HEADROOM		= 1<<26,
 	IFF_MACSEC			= 1<<27,
+	IFF_HIDDEN			= 1<<28,
 };
 
 #define IFF_802_1Q_VLAN			IFF_802_1Q_VLAN
@@ -1439,6 +1441,7 @@ enum netdev_priv_flags {
 #define IFF_TEAM			IFF_TEAM
 #define IFF_RXFH_CONFIGURED		IFF_RXFH_CONFIGURED
 #define IFF_MACSEC			IFF_MACSEC
+#define IFF_HIDDEN			IFF_HIDDEN
 
 /**
  *	struct net_device - The DEVICE structure.
@@ -1659,6 +1662,7 @@ enum netdev_priv_flags {
 struct net_device {
 	char			name[IFNAMSIZ];
 	struct hlist_node	name_hlist;
+	struct hlist_node	name_cmpl_hlist;
 	struct dev_ifalias	__rcu *ifalias;
 	/*
 	 *	I/O specific fields
@@ -1680,6 +1684,7 @@ struct net_device {
 	unsigned long		state;
 
 	struct list_head	dev_list;
+	struct list_head	dev_cmpl_list;
 	struct list_head	napi_list;
 	struct list_head	unreg_list;
 	struct list_head	close_list;
@@ -2326,6 +2331,7 @@ struct netdev_lag_lower_state_info {
 #define NETDEV_UDP_TUNNEL_PUSH_INFO	0x001C
 #define NETDEV_UDP_TUNNEL_DROP_INFO	0x001D
 #define NETDEV_CHANGE_TX_QUEUE_LEN	0x001E
+#define NETDEV_PRE_GETNAME	0x001F
 
 int register_netdevice_notifier(struct notifier_block *nb);
 int unregister_netdevice_notifier(struct notifier_block *nb);
@@ -2393,6 +2399,8 @@ static inline void netdev_notifier_info_init(struct netdev_notifier_info *info,
 		for_each_netdev_rcu(&init_net, slave)	\
 			if (netdev_master_upper_dev_get_rcu(slave) == (bond))
 #define net_device_entry(lh)	list_entry(lh, struct net_device, dev_list)
+#define for_each_netdev_complete(net, d)		\
+		list_for_each_entry(d, &(net)->dev_cmpl_head, dev_cmpl_list)
 
 static inline struct net_device *next_net_device(struct net_device *dev)
 {
@@ -2462,6 +2470,10 @@ static inline void unregister_netdevice(struct net_device *dev)
 	unregister_netdevice_queue(dev, NULL);
 }
 
+void netdev_set_hidden(struct net_device *dev);
+int hide_netdevice(struct net_device *dev);
+void unhide_netdevice(struct net_device *dev);
+
 int netdev_refcnt_read(const struct net_device *dev);
 void free_netdev(struct net_device *dev);
 void netdev_freemem(struct net_device *dev);
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 0490084..f9ce9b4 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -80,7 +80,9 @@ struct net {
 	struct sock		*genl_sock;
 
 	struct list_head 	dev_base_head;
+	struct list_head 	dev_cmpl_head;
 	struct hlist_head 	*dev_name_head;
+	struct hlist_head 	*dev_name_cmpl_head;
 	struct hlist_head	*dev_index_head;
 	unsigned int		dev_base_seq;	/* protected by rtnl_mutex */
 	int			ifindex;
diff --git a/net/core/dev.c b/net/core/dev.c
index 613fb40..a991b35 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -211,6 +211,13 @@ static inline struct hlist_head *dev_name_hash(struct net *net, const char *name
 	return &net->dev_name_head[hash_32(hash, NETDEV_HASHBITS)];
 }
 
+static inline struct hlist_head *dev_cname_hash(struct net *net, const char *name)
+{
+	unsigned int hash = full_name_hash(net, name, strnlen(name, IFNAMSIZ));
+
+	return &net->dev_name_cmpl_head[hash_32(hash, NETDEV_HASHBITS)];
+}
+
 static inline struct hlist_head *dev_index_hash(struct net *net, int ifindex)
 {
 	return &net->dev_index_head[ifindex & (NETDEV_HASHENTRIES - 1)];
@@ -237,11 +244,19 @@ static void list_netdevice(struct net_device *dev)
 
 	ASSERT_RTNL();
 
+
 	write_lock_bh(&dev_base_lock);
-	list_add_tail_rcu(&dev->dev_list, &net->dev_base_head);
-	hlist_add_head_rcu(&dev->name_hlist, dev_name_hash(net, dev->name));
-	hlist_add_head_rcu(&dev->index_hlist,
-			   dev_index_hash(net, dev->ifindex));
+	if (!(dev->priv_flags & IFF_HIDDEN)) {
+		list_add_tail_rcu(&dev->dev_list, &net->dev_base_head);
+		hlist_add_head_rcu(&dev->name_hlist,
+				   dev_name_hash(net, dev->name));
+		hlist_add_head_rcu(&dev->index_hlist,
+				   dev_index_hash(net, dev->ifindex));
+	}
+	list_add_tail_rcu(&dev->dev_cmpl_list,
+			  &net->dev_cmpl_head);
+	hlist_add_head_rcu(&dev->name_cmpl_hlist,
+			   dev_cname_hash(net, dev->name));
 	write_unlock_bh(&dev_base_lock);
 
 	dev_base_seq_inc(net);
@@ -256,9 +271,13 @@ static void unlist_netdevice(struct net_device *dev)
 
 	/* Unlink dev from the device chain */
 	write_lock_bh(&dev_base_lock);
-	list_del_rcu(&dev->dev_list);
-	hlist_del_rcu(&dev->name_hlist);
-	hlist_del_rcu(&dev->index_hlist);
+	if (!(dev->priv_flags & IFF_HIDDEN)) {
+		list_del_rcu(&dev->dev_list);
+		hlist_del_rcu(&dev->name_hlist);
+		hlist_del_rcu(&dev->index_hlist);
+	}
+	list_del_rcu(&dev->dev_cmpl_list);
+	hlist_del_rcu(&dev->name_cmpl_hlist);
 	write_unlock_bh(&dev_base_lock);
 
 	dev_base_seq_inc(dev_net(dev));
@@ -736,11 +755,15 @@ int dev_fill_metadata_dst(struct net_device *dev, struct sk_buff *skb)
 struct net_device *__dev_get_by_name(struct net *net, const char *name)
 {
 	struct net_device *dev;
-	struct hlist_head *head = dev_name_hash(net, name);
+	struct hlist_head *head = dev_cname_hash(net, name);
+	bool hidden_name = (*name == ':');
 
-	hlist_for_each_entry(dev, head, name_hlist)
+	hlist_for_each_entry(dev, head, name_cmpl_hlist) {
+		if (hidden_name && !(dev->priv_flags & IFF_HIDDEN))
+			continue;
 		if (!strncmp(dev->name, name, IFNAMSIZ))
 			return dev;
+	}
 
 	return NULL;
 }
@@ -1015,15 +1038,7 @@ struct net_device *__dev_get_by_flags(struct net *net, unsigned short if_flags,
 }
 EXPORT_SYMBOL(__dev_get_by_flags);
 
-/**
- *	dev_valid_name - check if name is okay for network device
- *	@name: name string
- *
- *	Network device names need to be valid file names to
- *	to allow sysfs to work.  We also disallow any kind of
- *	whitespace.
- */
-bool dev_valid_name(const char *name)
+static bool __dev_valid_name(const char *name, bool hidden)
 {
 	if (*name == '\0')
 		return false;
@@ -1033,12 +1048,27 @@ bool dev_valid_name(const char *name)
 		return false;
 
 	while (*name) {
-		if (*name == '/' || *name == ':' || isspace(*name))
+		if (*name == '/' || isspace(*name))
+			return false;
+		if (!hidden && *name == ':')
 			return false;
 		name++;
 	}
 	return true;
 }
+
+/**
+ *	dev_valid_name - check if name is okay for network device
+ *	@name: name string
+ *
+ *	Network device names need to be valid file names to
+ *	to allow sysfs to work.  We also disallow any kind of
+ *	whitespace.
+ */
+bool dev_valid_name(const char *name)
+{
+	return __dev_valid_name(name, false);
+}
 EXPORT_SYMBOL(dev_valid_name);
 
 /**
@@ -1064,9 +1094,6 @@ static int __dev_alloc_name(struct net *net, const char *name, char *buf)
 	unsigned long *inuse;
 	struct net_device *d;
 
-	if (!dev_valid_name(name))
-		return -EINVAL;
-
 	p = strchr(name, '%');
 	if (p) {
 		/*
@@ -1082,7 +1109,7 @@ static int __dev_alloc_name(struct net *net, const char *name, char *buf)
 		if (!inuse)
 			return -ENOMEM;
 
-		for_each_netdev(net, d) {
+		for_each_netdev_complete(net, d) {
 			if (!sscanf(d->name, name, &i))
 				continue;
 			if (i < 0 || i >= max_netdevices)
@@ -1139,18 +1166,18 @@ static int dev_alloc_name_ns(struct net *net,
 
 int dev_alloc_name(struct net_device *dev, const char *name)
 {
+	if (!dev_valid_name(name))
+		return -EINVAL;
+
 	return dev_alloc_name_ns(dev_net(dev), dev, name);
 }
 EXPORT_SYMBOL(dev_alloc_name);
 
-int dev_get_valid_name(struct net *net, struct net_device *dev,
-		       const char *name)
+static int __dev_get_name(struct net *net, struct net_device *dev,
+			  const char *name)
 {
 	BUG_ON(!net);
 
-	if (!dev_valid_name(name))
-		return -EINVAL;
-
 	if (strchr(name, '%'))
 		return dev_alloc_name_ns(net, dev, name);
 	else if (__dev_get_by_name(net, name))
@@ -1160,6 +1187,15 @@ int dev_get_valid_name(struct net *net, struct net_device *dev,
 
 	return 0;
 }
+
+int dev_get_valid_name(struct net *net, struct net_device *dev,
+		       const char *name)
+{
+	if (!__dev_valid_name(name, (dev->priv_flags & IFF_HIDDEN)))
+		return -EINVAL;
+
+	return __dev_get_name(net, dev, name);
+}
 EXPORT_SYMBOL(dev_get_valid_name);
 
 /**
@@ -1221,12 +1257,15 @@ int dev_change_name(struct net_device *dev, const char *newname)
 
 	write_lock_bh(&dev_base_lock);
 	hlist_del_rcu(&dev->name_hlist);
+	hlist_del_rcu(&dev->name_cmpl_hlist);
 	write_unlock_bh(&dev_base_lock);
 
 	synchronize_rcu();
 
 	write_lock_bh(&dev_base_lock);
 	hlist_add_head_rcu(&dev->name_hlist, dev_name_hash(net, dev->name));
+	hlist_add_head_rcu(&dev->name_cmpl_hlist,
+			   dev_cname_hash(net, dev->name));
 	write_unlock_bh(&dev_base_lock);
 
 	ret = call_netdevice_notifiers(NETDEV_CHANGENAME, dev);
@@ -1594,7 +1633,7 @@ int register_netdevice_notifier(struct notifier_block *nb)
 	if (dev_boot_phase)
 		goto unlock;
 	for_each_net(net) {
-		for_each_netdev(net, dev) {
+		for_each_netdev_complete(net, dev) {
 			err = call_netdevice_notifier(nb, NETDEV_REGISTER, dev);
 			err = notifier_to_errno(err);
 			if (err)
@@ -1614,7 +1653,7 @@ int register_netdevice_notifier(struct notifier_block *nb)
 rollback:
 	last = dev;
 	for_each_net(net) {
-		for_each_netdev(net, dev) {
+		for_each_netdev_complete(net, dev) {
 			if (dev == last)
 				goto outroll;
 
@@ -1659,7 +1698,7 @@ int unregister_netdevice_notifier(struct notifier_block *nb)
 		goto unlock;
 
 	for_each_net(net) {
-		for_each_netdev(net, dev) {
+		for_each_netdev_complete(net, dev) {
 			if (dev->flags & IFF_UP) {
 				call_netdevice_notifier(nb, NETDEV_GOING_DOWN,
 							dev);
@@ -7642,6 +7681,11 @@ int register_netdevice(struct net_device *dev)
 	spin_lock_init(&dev->addr_list_lock);
 	netdev_set_addr_lockdep_class(dev);
 
+	ret = call_netdevice_notifiers(NETDEV_PRE_GETNAME, dev);
+	ret = notifier_to_errno(ret);
+	if (ret)
+		goto out;
+
 	ret = dev_get_valid_name(net, dev, dev->name);
 	if (ret < 0)
 		goto out;
@@ -8461,6 +8505,166 @@ int dev_change_net_namespace(struct net_device *dev, struct net *net, const char
 }
 EXPORT_SYMBOL_GPL(dev_change_net_namespace);
 
+/**
+ *	netdev_set_hidden - indicate a hidden netdev before or at
+ *			    early point of driver registration
+ *	@dev: device
+ *
+ *	Callers must hold the rtnl semaphore, typically before or
+ *	at some early point (e.g in NETDEV_PRE_GETNAME notifier)
+ *	of driver registrationr, or it won't take effect to hide
+ *	the netdev post registration.
+ */
+void netdev_set_hidden(struct net_device *dev)
+{
+	dev->priv_flags |= IFF_HIDDEN;
+	strlcpy(dev->name, ":eth%d", IFNAMSIZ);
+}
+EXPORT_SYMBOL(netdev_set_hidden);
+
+/**
+ *	hide_netdevice - hide device from userspace's visibility
+ *	@dev: device
+ *
+ *	This function shuts down a device interface and removes it
+ *	from all userspace visible dev lists, and moves it to 
+ *	comprehensive dev lists containing both userspace-visible
+ *	and kernel-only devices. On success 0 is returned, on
+ *	a failure a netagive errno code is returned.
+ */
+int hide_netdevice(struct net_device *dev)
+{
+	int err;
+
+	rtnl_lock();
+
+	err = 0;
+	/* Get out if there is nothing to do */
+	if (dev->priv_flags & IFF_HIDDEN)
+		goto out;
+
+	err = -EINVAL;
+	/* Ensure the device has been registrered */
+	if (dev->reg_state != NETREG_REGISTERED)
+		goto out;
+
+	err = __dev_get_name(dev_net(dev), dev, ":eth%d");
+       	if (err < 0)
+		goto out;
+
+	/*
+	 * And now a mini version of register_netdevice unregister_netdevice.
+	 */
+
+	/* If device is running close it first. */
+	dev_close(dev);
+
+	/* And unlink it from device chain */
+	unlist_netdevice(dev);
+	synchronize_net();
+
+	/* Shutdown queueing discipline. */
+	dev_shutdown(dev);
+
+	/* Notify protocols, that we are about to destroy
+	 * this device. They should clean all the things.
+	 *
+	 * Note that dev->reg_state stays at NETREG_REGISTERED.
+	 * This is wanted because this way 8021q and macvlan know
+	 * the device is just moving and can keep their slaves up.
+	 */
+	call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
+	rcu_barrier();
+	call_netdevice_notifiers(NETDEV_UNREGISTER_FINAL, dev);
+	rtmsg_ifinfo(RTM_DELLINK, dev, ~0U, GFP_KERNEL);
+
+	/*
+	 *	Flush the unicast and multicast chains
+	 */
+	dev_uc_flush(dev);
+	dev_mc_flush(dev);
+
+	/* Send a netdev-removed uevent to the old namespace */
+	kobject_uevent(&dev->dev.kobj, KOBJ_REMOVE);
+	netdev_adjacent_del_links(dev);
+
+	/* Fixup kobjects */
+	err = device_rename(&dev->dev, dev->name);
+	WARN_ON(err);
+
+	dev->priv_flags |= IFF_HIDDEN;
+	list_netdevice(dev);
+
+	/* Notify protocols, that a new device appeared. */
+	call_netdevice_notifiers(NETDEV_REGISTER, dev);
+
+	synchronize_net();
+	err = 0;
+out:
+	rtnl_unlock();
+	return err;
+}
+EXPORT_SYMBOL(hide_netdevice);
+
+/**
+ *	unhide_netdevice - make a hidden device visible to userspace
+ *	@dev: device
+ *
+ *	This function moves a hidden device to userspace visible
+ *	interfaces. A %NETDEV_REGISTER message will be sent to
+ *	the netdev notifier chain.
+ */
+void unhide_netdevice(struct net_device *dev)
+{
+	int err;
+
+	rtnl_lock();
+	/* Get out if there is nothing to do */
+	if (!(dev->priv_flags & IFF_HIDDEN))
+		goto out;
+
+	/* Ensure the device has been registrered */
+	if (dev->reg_state != NETREG_REGISTERED)
+		goto out;
+
+	err = __dev_get_name(dev_net(dev), dev, "eth%d");
+	WARN_ON(err < 0);
+
+	/* If device is running close it first. */
+	dev_close(dev);
+	unlist_netdevice(dev);
+	synchronize_net();
+
+	/* Shutdown queueing discipline. */
+	dev_shutdown(dev);
+
+	call_netdevice_notifiers(NETDEV_UNREGISTER, dev);
+	rcu_barrier();
+	call_netdevice_notifiers(NETDEV_UNREGISTER_FINAL, dev);
+	dev_uc_flush(dev);
+	dev_mc_flush(dev);
+
+	/* Send a netdev-add uevent to the new namespace */
+	kobject_uevent(&dev->dev.kobj, KOBJ_ADD);
+	netdev_adjacent_add_links(dev);
+
+	/* Fixup kobjects */
+	err = device_rename(&dev->dev, dev->name);
+	WARN_ON(err);
+
+	/* Add the device back in the hashes */
+	dev->priv_flags &= ~IFF_HIDDEN;
+	list_netdevice(dev);
+
+	call_netdevice_notifiers(NETDEV_REGISTER, dev);
+
+	rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U, GFP_KERNEL);
+	synchronize_net();
+out:
+	rtnl_unlock();
+}
+EXPORT_SYMBOL(unhide_netdevice);
+
 static int dev_cpu_dead(unsigned int oldcpu)
 {
 	struct sk_buff **list_skb;
@@ -8571,13 +8775,19 @@ static struct hlist_head * __net_init netdev_create_hash(void)
 /* Initialize per network namespace state */
 static int __net_init netdev_init(struct net *net)
 {
-	if (net != &init_net)
+	if (net != &init_net) {
 		INIT_LIST_HEAD(&net->dev_base_head);
+		INIT_LIST_HEAD(&net->dev_cmpl_head);
+	}
 
 	net->dev_name_head = netdev_create_hash();
 	if (net->dev_name_head == NULL)
 		goto err_name;
 
+	net->dev_name_cmpl_head = netdev_create_hash();
+	if (net->dev_name_cmpl_head == NULL)
+		goto err_cname;
+
 	net->dev_index_head = netdev_create_hash();
 	if (net->dev_index_head == NULL)
 		goto err_idx;
@@ -8585,6 +8795,8 @@ static int __net_init netdev_init(struct net *net)
 	return 0;
 
 err_idx:
+	kfree(net->dev_name_cmpl_head);
+err_cname:
 	kfree(net->dev_name_head);
 err_name:
 	return -ENOMEM;
@@ -8676,9 +8888,12 @@ void func(const struct net_device *dev, const char *fmt, ...)	\
 static void __net_exit netdev_exit(struct net *net)
 {
 	kfree(net->dev_name_head);
+	kfree(net->dev_name_cmpl_head);
 	kfree(net->dev_index_head);
-	if (net != &init_net)
+	if (net != &init_net) {
 		WARN_ON_ONCE(!list_empty(&net->dev_base_head));
+		WARN_ON_ONCE(!list_empty(&net->dev_cmpl_head));
+	}
 }
 
 static struct pernet_operations __net_initdata netdev_net_ops = {
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 60a71be..1c399e9 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -37,6 +37,7 @@
 struct net init_net = {
 	.count		= ATOMIC_INIT(1),
 	.dev_base_head	= LIST_HEAD_INIT(init_net.dev_base_head),
+	.dev_cmpl_head	= LIST_HEAD_INIT(init_net.dev_cmpl_head),
 };
 EXPORT_SYMBOL(init_net);
 
-- 
1.8.3.1

^ permalink raw reply related

* [RFC PATCH 1/3] qemu: virtio-bypass should explicitly bind to a passthrough device
From: Si-Wei Liu @ 2018-04-01  9:13 UTC (permalink / raw)
  To: mst, jiri, stephen, alexander.h.duyck, davem, jesse.brandeburg,
	kubakici, jasowang, sridhar.samudrala, netdev, virtualization,
	virtio-dev
In-Reply-To: <1522573990-5242-1-git-send-email-si-wei.liu@oracle.com>

The new backup option allows guest virtio-bypass driver to explicitly
bind to a corresponding passthrough instance, which is identifiable by
the <bus>:<slot>.<function> notation. MAC address is still validated
in the guest but not the only criteria for pairing two devices.
MAC address is more a matter of network configuration than a (virtual)
device identifier, the latter of which needs to be unique as part of
VM configuration. Techinically it's possible there exists more than
one device in the guest configured with the same MAC, but each belongs
to completely isolated network.

The direct benefit as a result of the explicit binding (or pairing),
apparently, is the prohibition of improper binding or malicious pairing
due to any flexiblility in terms of guest MAC address config.

What's more important, the indicator of guest device location can even
be used as a means to reserve the slot for the corresponding passthrough
device in the PCI bus tree if such device is temporarily absent, but
yet to be hot plugged into the VM. We'd need to preserve the slot for
the passthrough device to which virtio-bypass is bound, such that once
it is plugged out as a result of migration we can ensure the slot
wouldn't be occupied by other devices, and any user-space application
assumes consistent device location in the bus tree still works.

The usage for the backup option is as follows:

   -device virtio-net-pci, ... ,backup=<bus-id>:<slot>[.<function>]

for e.g.

   -device virtio-net-pci,id=net0,mac=52:54:00:e0:58:80,backup=pci.2:0x3
   ...
   -device vfio-pci,host=02:10.1,id=hostdev0,bus=pci.2,addr=0x3

Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
---
 hw/net/virtio-net.c                         | 29 ++++++++++++-
 include/hw/pci/pci.h                        |  3 ++
 include/hw/virtio/virtio-net.h              |  2 +
 include/standard-headers/linux/virtio_net.h |  1 +
 qdev-monitor.c                              | 64 +++++++++++++++++++++++++++++
 5 files changed, 97 insertions(+), 2 deletions(-)

diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index de31b1b98c..a36b169958 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -26,6 +26,7 @@
 #include "qapi-event.h"
 #include "hw/virtio/virtio-access.h"
 #include "migration/misc.h"
+#include "hw/pci/pci.h"
 
 #define VIRTIO_NET_VM_VERSION    11
 
@@ -61,6 +62,8 @@ static VirtIOFeature feature_sizes[] = {
      .end = endof(struct virtio_net_config, max_virtqueue_pairs)},
     {.flags = 1 << VIRTIO_NET_F_MTU,
      .end = endof(struct virtio_net_config, mtu)},
+    {.flags = 1 << VIRTIO_NET_F_BACKUP,
+     .end = endof(struct virtio_net_config, bsf2backup)},
     {}
 };
 
@@ -84,10 +87,24 @@ static void virtio_net_get_config(VirtIODevice *vdev, uint8_t *config)
 {
     VirtIONet *n = VIRTIO_NET(vdev);
     struct virtio_net_config netcfg;
+    uint16_t busdevfn;
 
     virtio_stw_p(vdev, &netcfg.status, n->status);
     virtio_stw_p(vdev, &netcfg.max_virtqueue_pairs, n->max_queues);
     virtio_stw_p(vdev, &netcfg.mtu, n->net_conf.mtu);
+    if (n->net_conf.backup) {
+        /* Below function should not fail as the backup ID string
+         * has been validated when device is being realized.
+         * Until guest starts to run we can can get to the
+         * effective bus num in use from pci config space where
+         * guest had written to.
+         */
+        pci_get_busdevfn_by_id(n->net_conf.backup, &busdevfn,
+                               NULL, NULL);
+        busdevfn <<= 8;
+        busdevfn |= (n->backup_devfn & 0xFF);
+        virtio_stw_p(vdev, &netcfg.bsf2backup, busdevfn);
+    }
     memcpy(netcfg.mac, n->mac, ETH_ALEN);
     memcpy(config, &netcfg, n->config_size);
 }
@@ -1935,11 +1952,19 @@ static void virtio_net_device_realize(DeviceState *dev, Error **errp)
     VirtIODevice *vdev = VIRTIO_DEVICE(dev);
     VirtIONet *n = VIRTIO_NET(dev);
     NetClientState *nc;
+    uint16_t bdevfn;
     int i;
 
     if (n->net_conf.mtu) {
         n->host_features |= (0x1 << VIRTIO_NET_F_MTU);
     }
+    if (n->net_conf.backup) {
+        if (pci_get_busdevfn_by_id(n->net_conf.backup, NULL,
+                                   &bdevfn, errp))
+            return;
+        n->backup_devfn = bdevfn;
+        n->host_features |= (0x1 << VIRTIO_NET_F_BACKUP);
+    }
 
     virtio_net_set_config_size(n, n->host_features);
     virtio_init(vdev, "virtio-net", VIRTIO_ID_NET, n->config_size);
@@ -2160,8 +2185,8 @@ static Property virtio_net_properties[] = {
     DEFINE_PROP_UINT16("host_mtu", VirtIONet, net_conf.mtu, 0),
     DEFINE_PROP_BOOL("x-mtu-bypass-backend", VirtIONet, mtu_bypass_backend,
                      true),
-    DEFINE_PROP_BIT("backup", VirtIONet, host_features,
-                     VIRTIO_NET_F_BACKUP, false),
+    DEFINE_PROP_STRING("backup", VirtIONet, net_conf.backup),
+
     DEFINE_PROP_END_OF_LIST(),
 };
 
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index d8c18c7fa4..dbb910d162 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -431,6 +431,9 @@ PCIDevice *pci_nic_init_nofail(NICInfo *nd, PCIBus *rootbus,
 
 PCIDevice *pci_vga_init(PCIBus *bus);
 
+int pci_get_busdevfn_by_id(const char *id, uint16_t *busnr,
+                           uint16_t *devfn, Error **errp);
+
 static inline PCIBus *pci_get_bus(const PCIDevice *dev)
 {
     return PCI_BUS(qdev_get_parent_bus(DEVICE(dev)));
diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h
index b81b6a4624..276b39f64f 100644
--- a/include/hw/virtio/virtio-net.h
+++ b/include/hw/virtio/virtio-net.h
@@ -38,6 +38,7 @@ typedef struct virtio_net_conf
     uint16_t rx_queue_size;
     uint16_t tx_queue_size;
     uint16_t mtu;
+    char *backup;
 } virtio_net_conf;
 
 /* Maximum packet size we can receive from tap device: header + 64k */
@@ -99,6 +100,7 @@ typedef struct VirtIONet {
     int announce_counter;
     bool needs_vnet_hdr_swap;
     bool mtu_bypass_backend;
+    uint16_t backup_devfn;
 } VirtIONet;
 
 void virtio_net_set_netclient_name(VirtIONet *n, const char *name,
diff --git a/include/standard-headers/linux/virtio_net.h b/include/standard-headers/linux/virtio_net.h
index 65dde3209d..cd936e5521 100644
--- a/include/standard-headers/linux/virtio_net.h
+++ b/include/standard-headers/linux/virtio_net.h
@@ -79,6 +79,7 @@ struct virtio_net_config {
 	uint16_t max_virtqueue_pairs;
 	/* Default maximum transmit unit advice */
 	uint16_t mtu;
+	uint16_t bsf2backup;
 } QEMU_PACKED;
 
 /*
diff --git a/qdev-monitor.c b/qdev-monitor.c
index 846238175f..600a81c73e 100644
--- a/qdev-monitor.c
+++ b/qdev-monitor.c
@@ -32,6 +32,8 @@
 #include "qemu/help_option.h"
 #include "qemu/option.h"
 #include "sysemu/block-backend.h"
+#include "hw/pci/pci.h"
+#include "hw/vfio/pci.h"
 #include "migration/misc.h"
 
 /*
@@ -896,6 +898,68 @@ void qmp_device_del(const char *id, Error **errp)
     }
 }
 
+int pci_get_busdevfn_by_id(const char *id, uint16_t *busnr,
+                           uint16_t *devfn, Error **errp)
+{
+    uint16_t busnum = 0, slot = 0, func = 0;
+    const char *pc, *pd, *pe;
+    Error *local_err = NULL;
+    ObjectClass *class;
+    char value[1024];
+    BusState *bus;
+    uint64_t u64;
+
+    if (!(pc = strchr(id, ':'))) {
+        error_setg(errp, "Invalid id: backup=%s, "
+                   "correct format should be backup="
+                   "'<bus-id>:<slot>[.<function>]'", id);
+        return -1;
+    }
+    get_opt_name(value, sizeof(value), id, ':');
+    if (pc != id + 1) {
+        bus = qbus_find(value, errp);
+        if (!bus)
+            return -1;
+
+        class = object_get_class(OBJECT(bus));
+        if (class != object_class_by_name(TYPE_PCI_BUS) &&
+            class != object_class_by_name(TYPE_PCIE_BUS)) {
+            error_setg(errp, "%s is not a device on pci bus", id);
+            return -1;
+        }
+        busnum = (uint16_t)pci_bus_num(PCI_BUS(bus));
+    }
+
+    if (!devfn)
+        goto out;
+
+    pd = strchr(pc, '.');
+    pe = get_opt_name(value, sizeof(value), pc + 1, '.');
+    if (pe != pc + 1) {
+        parse_option_number("slot", value, &u64, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+            return -1;
+        }
+        slot = (uint16_t)u64;
+    }
+    if (pd && *(pd + 1) != '\0') {
+        parse_option_number("function", pd, &u64, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+            return -1;
+        }
+        func = (uint16_t)u64;
+    }
+
+out:
+    if (busnr)
+        *busnr = busnum;
+    if (devfn)
+        *devfn = ((slot & 0x1F) << 3) | (func & 0x7);
+    return 0;
+}
+
 BlockBackend *blk_by_qdev_id(const char *id, Error **errp)
 {
     DeviceState *dev;
-- 
1.8.3.1

^ permalink raw reply related

* [RFC PATCH 0/3] Userspace compatible driver model for virtio_bypass
From: Si-Wei Liu @ 2018-04-01  9:13 UTC (permalink / raw)
  To: mst, jiri, stephen, alexander.h.duyck, davem, jesse.brandeburg,
	kubakici, jasowang, sridhar.samudrala, netdev, virtualization,
	virtio-dev

This RFC patch series attempts to hide the lower netdevs for virtio_bypass
from userspace visibility, and tighten up the association between virtio_bypass
and the lower passthrough netdev to be enslaved by binding to a specific device
identifier explicitly. This in turn has the benefits of taking the merit of the
2-netdev driver model from netvsc (userspace compliance) to a perfect sense,
while keeping the internal implementation still a 3-netdev model. There's no
loss of feature such as XDP, and continously adding improvements for performance
and features thanks to the good bypass nature of the 3-netdev model are also
possible in the long run.

As said, this change should make the code sharing between netvsc and virtio_bypass
easier and more approachable, as I think the concerns Stephen pointed out was
mainly regarding userspace compatibility and not the hardware offloading
tunables on the VF slave that had to be exposed to netvsc users today, if I'm
not mistaken.

Jiri expressed concerns around the weak check depending on MAC address only
during enslavement and we really need to do strict checks more than that. With
the change to requiring user explicitly specifying the passthrough device
to which virtio_bypass is expected to be bound, virtio_bypass now would match
device based on the PCI slot info in device tree, rather than rely on MAC
address inadvertently. In addition, the PCI slot info passed in will be helpful
to accommodate udevd to name the virtio_bypass interface specifically, making
a transparent and automatic upgrade from existing VF setup to virtio_bypass
possible (expect udevd patch to come later on).

Since I'd like to get the discussion going as early as possible, this series
just shows essential changes to a minimal set. Although not included in the
series, I would like to remind ahead that a few neccessary pieces must be built
upon the assumption of hidden lower netdevs and explicit binding. Such as
sysfs interfaces for udev's naming of virtio_bypass interace. Such as passing
down HW offloading configs to the active lower slave, and making it persistent
across live migration. And so on..

The current patch series is based on Sridhar's v4 patch "Enable virtio to act
as a backup for a passthru device", but I can resync anyway to his upcoming
version once posted.


Si-Wei Liu (1):
  qemu: virtio-bypass should explicitly bind to a passthrough device

 hw/net/virtio-net.c                         | 29 ++++++++++++-
 include/hw/pci/pci.h                        |  3 ++
 include/hw/virtio/virtio-net.h              |  2 +
 include/standard-headers/linux/virtio_net.h |  1 +
 qdev-monitor.c                              | 64 +++++++++++++++++++++++++++++
 5 files changed, 97 insertions(+), 2 deletions(-)

Si-Wei Liu (2):
  netdev: kernel-only IFF_HIDDEN netdevice
  virtio_net: make lower netdevs for virtio_bypass hidden

 drivers/net/virtio_net.c        | 159 +++++++++++++++++++++--
 include/linux/netdevice.h       |  12 ++
 include/net/net_namespace.h     |   2 +
 include/uapi/linux/virtio_net.h |   2 +
 net/core/dev.c                  | 281 +++++++++++++++++++++++++++++++++++-----
 net/core/net_namespace.c        |   1 +
 6 files changed, 411 insertions(+), 46 deletions(-)

-- 
1.8.3.1

^ permalink raw reply

* Re: [PATCH net-next] net/broadcom: Fixup broken build due to function name change
From: kbuild test robot @ 2018-04-01  8:57 UTC (permalink / raw)
  To: Tal Gilboa
  Cc: kbuild-all, David S. Miller, netdev, Tariq Toukan, Tal Gilboa,
	Saeed Mahameed
In-Reply-To: <1522565293-12068-1-git-send-email-talgi@mellanox.com>

[-- Attachment #1: Type: text/plain, Size: 2634 bytes --]

Hi Tal,

I love your patch! Yet something to improve:

[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Tal-Gilboa/net-broadcom-Fixup-broken-build-due-to-function-name-change/20180401-145037
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa 

All errors (new ones prefixed by >>):

   drivers/net/ethernet/broadcom/genet/bcmgenet.c: In function 'bcmgenet_set_ring_rx_coalesce':
>> drivers/net/ethernet/broadcom/genet/bcmgenet.c:655:11: error: implicit declaration of function 'net_dim_get_def_rx_moderation'; did you mean 'net_dim_get_def_profile'? [-Werror=implicit-function-declaration]
      moder = net_dim_get_def_rx_moderation(ring->dim.dim.mode);
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
              net_dim_get_def_profile
>> drivers/net/ethernet/broadcom/genet/bcmgenet.c:655:9: error: incompatible types when assigning to type 'struct net_dim_cq_moder' from type 'int'
      moder = net_dim_get_def_rx_moderation(ring->dim.dim.mode);
            ^
   drivers/net/ethernet/broadcom/genet/bcmgenet.c: In function 'bcmgenet_init_rx_coalesce':
   drivers/net/ethernet/broadcom/genet/bcmgenet.c:2104:9: error: incompatible types when assigning to type 'struct net_dim_cq_moder' from type 'int'
      moder = net_dim_get_def_rx_moderation(dim->dim.mode);
            ^
   cc1: some warnings being treated as errors

vim +655 drivers/net/ethernet/broadcom/genet/bcmgenet.c

   642	
   643	static void bcmgenet_set_ring_rx_coalesce(struct bcmgenet_rx_ring *ring,
   644						  struct ethtool_coalesce *ec)
   645	{
   646		struct net_dim_cq_moder moder;
   647		u32 usecs, pkts;
   648	
   649		ring->rx_coalesce_usecs = ec->rx_coalesce_usecs;
   650		ring->rx_max_coalesced_frames = ec->rx_max_coalesced_frames;
   651		usecs = ring->rx_coalesce_usecs;
   652		pkts = ring->rx_max_coalesced_frames;
   653	
   654		if (ec->use_adaptive_rx_coalesce && !ring->dim.use_dim) {
 > 655			moder = net_dim_get_def_rx_moderation(ring->dim.dim.mode);
   656			usecs = moder.usec;
   657			pkts = moder.pkts;
   658		}
   659	
   660		ring->dim.use_dim = ec->use_adaptive_rx_coalesce;
   661		bcmgenet_set_rx_coalesce(ring, usecs, pkts);
   662	}
   663	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 53225 bytes --]

^ permalink raw reply

* Re: [net-next V8 PATCH 01/16] mlx5: basic XDP_REDIRECT forward support
From: Tariq Toukan @ 2018-04-01  8:46 UTC (permalink / raw)
  To: Jesper Dangaard Brouer, netdev, BjörnTöpel,
	magnus.karlsson
  Cc: eugenia, Jason Wang, John Fastabend, Eran Ben Elisha,
	Saeed Mahameed, galp, Daniel Borkmann, Alexei Starovoitov,
	Tariq Toukan
In-Reply-To: <152249795210.28297.14005981548436322464.stgit@firesoul>



On 31/03/2018 3:05 PM, Jesper Dangaard Brouer wrote:

..

> @@ -844,6 +851,15 @@ static inline int mlx5e_xdp_handle(struct mlx5e_rq *rq,
>   		if (unlikely(!mlx5e_xmit_xdp_frame(rq, di, &xdp)))
>   			trace_xdp_exception(rq->netdev, prog, act);
>   		return true;
> +	case XDP_REDIRECT:
> +		/* When XDP enabled then page-refcnt==1 here */
> +		err = xdp_do_redirect(rq->netdev, &xdp, prog);
> +		if (!err) {
> +			rq->wqe.xdp_xmit = true; /* XDP xmit owns page */

boolean xdp_xmit does not exist anymore, it was removed recently by:
121e89275471 net/mlx5e: Refactor RQ XDP_TX indication

please replace with:
			__set_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags);

> +			rq->xdpsq.db.redirect_flush = true;
> +			mlx5e_page_dma_unmap(rq, di);
> +		}
> +		return true;
>   	default:
>   		bpf_warn_invalid_xdp_action(act);
>   	case XDP_ABORTED:

^ permalink raw reply

* INFO: rcu detected stall in sch_direct_xmit
From: syzbot @ 2018-04-01  8:16 UTC (permalink / raw)
  To: davem, jhs, jiri, linux-kernel, netdev, syzkaller-bugs,
	xiyou.wangcong

Hello,

syzbot hit the following crash on net-next commit
18845557fd6fc1998f2d0d8c30467f86db587529 (Thu Mar 29 20:24:06 2018 +0000)
Merge tag 'wireless-drivers-next-for-davem-2018-03-29' of  
git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
syzbot dashboard link:  
https://syzkaller.appspot.com/bug?extid=536ae84aa971d463d902

So far this crash happened 112 times on net-next.
Unfortunately, I don't have any reproducer for this crash yet.
Raw console output:  
https://syzkaller.appspot.com/x/log.txt?id=4584417414610944
Kernel config: https://syzkaller.appspot.com/x/.config?id=-37309782588693906
compiler: gcc (GCC) 7.1.1 20170620

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+536ae84aa971d463d902@syzkaller.appspotmail.com
It will help syzbot understand when the bug is fixed. See footer for  
details.
If you forward the report, please keep this part and the footer.

device bridge0 entered promiscuous mode
INFO: rcu_sched self-detected stall on CPU
	1-...!: (1 GPs behind) idle=cfa/1/4611686018427387906 softirq=96595/96596  
fqs=30
	 (t=125000 jiffies g=45745 c=45744 q=716)
rcu_sched kthread starved for 124864 jiffies! g45745 c45744 f0x0  
RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=0
rcu_sched       I24616     8      2 0x80000000
Call Trace:
  context_switch kernel/sched/core.c:2862 [inline]
  __schedule+0x8fb/0x1ec0 kernel/sched/core.c:3440
  schedule+0xf5/0x430 kernel/sched/core.c:3499
  schedule_timeout+0x118/0x230 kernel/time/timer.c:1801
  rcu_gp_kthread+0x9dd/0x18e0 kernel/rcu/tree.c:2230
  kthread+0x33c/0x400 kernel/kthread.c:238
  ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406
NMI backtrace for cpu 1
CPU: 1 PID: 12481 Comm: syz-executor5 Not tainted 4.16.0-rc6+ #286
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
  <IRQ>
  __dump_stack lib/dump_stack.c:17 [inline]
  dump_stack+0x194/0x24d lib/dump_stack.c:53
  nmi_cpu_backtrace+0x1d2/0x210 lib/nmi_backtrace.c:103
  nmi_trigger_cpumask_backtrace+0x123/0x180 lib/nmi_backtrace.c:62
  arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
  trigger_single_cpu_backtrace include/linux/nmi.h:156 [inline]
  rcu_dump_cpu_stacks+0x186/0x1de kernel/rcu/tree.c:1375
  print_cpu_stall kernel/rcu/tree.c:1524 [inline]
  check_cpu_stall.isra.61+0xbb8/0x15b0 kernel/rcu/tree.c:1592
  __rcu_pending kernel/rcu/tree.c:3361 [inline]
  rcu_pending kernel/rcu/tree.c:3423 [inline]
  rcu_check_callbacks+0x238/0xd20 kernel/rcu/tree.c:2763
  update_process_times+0x30/0x60 kernel/time/timer.c:1636
  tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:162
  tick_sched_timer+0x42/0x120 kernel/time/tick-sched.c:1194
  __run_hrtimer kernel/time/hrtimer.c:1349 [inline]
  __hrtimer_run_queues+0x39c/0xec0 kernel/time/hrtimer.c:1411
  hrtimer_interrupt+0x2a5/0x6f0 kernel/time/hrtimer.c:1469
  local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
  smp_apic_timer_interrupt+0x14a/0x700 arch/x86/kernel/apic/apic.c:1050
  apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857
  </IRQ>
RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:68 [inline]
RIP: 0010:native_queued_spin_lock_slowpath+0x12d/0xfa0  
kernel/locking/qspinlock.c:305
RSP: 0018:ffff8801a69da1d0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff12
RAX: 0000000000000001 RBX: ffff8801c135c140 RCX: dffffc0000000000
RDX: 0000000000000004 RSI: ffff8801a69da2a0 RDI: ffff8801c135c140
RBP: ffff8801a69da548 R08: ffffffff85142d51 R09: 0000000000000000
R10: ffff8801a69da468 R11: ffff8801c135c158 R12: ffffed0034d3b454
R13: ffff8801a69da520 R14: 1ffff10034d3b440 R15: 0000000000000003
  pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:669 [inline]
  queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:30 [inline]
  queued_spin_lock include/asm-generic/qspinlock.h:90 [inline]
  do_raw_spin_lock+0x185/0x220 kernel/locking/spinlock_debug.c:113
  __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline]
  _raw_spin_lock+0x32/0x40 kernel/locking/spinlock.c:144
  spin_lock include/linux/spinlock.h:310 [inline]
  __netif_tx_lock include/linux/netdevice.h:3575 [inline]
  sch_direct_xmit+0x361/0x1140 net/sched/sch_generic.c:325
  qdisc_restart net/sched/sch_generic.c:393 [inline]
  __qdisc_run+0x57d/0x18e0 net/sched/sch_generic.c:401
  __dev_xmit_skb net/core/dev.c:3241 [inline]
  __dev_queue_xmit+0xb8b/0x2fc0 net/core/dev.c:3549
  dev_queue_xmit+0x17/0x20 net/core/dev.c:3614
  br_dev_queue_push_xmit+0x196/0x5a0 net/bridge/br_forward.c:55
  NF_HOOK include/linux/netfilter.h:288 [inline]
  br_forward_finish+0xc8/0x530 net/bridge/br_forward.c:67
  NF_HOOK include/linux/netfilter.h:288 [inline]
  __br_forward+0x533/0xc80 net/bridge/br_forward.c:112
  br_flood+0x665/0x770 net/bridge/br_forward.c:225
  br_dev_xmit+0xa68/0x1550 net/bridge/br_device.c:87
  __netdev_start_xmit include/linux/netdevice.h:4080 [inline]
  netdev_start_xmit include/linux/netdevice.h:4089 [inline]
  xmit_one net/core/dev.c:3050 [inline]
  dev_hard_start_xmit+0x24e/0xac0 net/core/dev.c:3066
  __dev_queue_xmit+0x26bf/0x2fc0 net/core/dev.c:3581
  dev_queue_xmit+0x17/0x20 net/core/dev.c:3614
  neigh_hh_output include/net/neighbour.h:472 [inline]
  neigh_output include/net/neighbour.h:480 [inline]
  ip_finish_output2+0xf4d/0x1550 net/ipv4/ip_output.c:229
  ip_finish_output+0x864/0xd60 net/ipv4/ip_output.c:317
  NF_HOOK_COND include/linux/netfilter.h:277 [inline]
  ip_mc_output+0x271/0x1350 net/ipv4/ip_output.c:390
  dst_output include/net/dst.h:444 [inline]
  ip_local_out+0x95/0x160 net/ipv4/ip_output.c:124
  iptunnel_xmit+0x556/0x810 net/ipv4/ip_tunnel_core.c:91
  ip_tunnel_xmit+0x177b/0x3550 net/ipv4/ip_tunnel.c:768
  __gre_xmit+0x546/0x8b0 net/ipv4/ip_gre.c:449
  erspan_xmit+0x779/0x22a0 net/ipv4/ip_gre.c:731
  __netdev_start_xmit include/linux/netdevice.h:4080 [inline]
  netdev_start_xmit include/linux/netdevice.h:4089 [inline]
  xmit_one net/core/dev.c:3050 [inline]
  dev_hard_start_xmit+0x24e/0xac0 net/core/dev.c:3066
  sch_direct_xmit+0x40d/0x1140 net/sched/sch_generic.c:327
  qdisc_restart net/sched/sch_generic.c:393 [inline]
  __qdisc_run+0x57d/0x18e0 net/sched/sch_generic.c:401
  __dev_xmit_skb net/core/dev.c:3241 [inline]
  __dev_queue_xmit+0xb8b/0x2fc0 net/core/dev.c:3549
  dev_queue_xmit+0x17/0x20 net/core/dev.c:3614
  br_dev_queue_push_xmit+0x196/0x5a0 net/bridge/br_forward.c:55
  NF_HOOK include/linux/netfilter.h:288 [inline]
  br_forward_finish+0xc8/0x530 net/bridge/br_forward.c:67
  NF_HOOK include/linux/netfilter.h:288 [inline]
  __br_forward+0x533/0xc80 net/bridge/br_forward.c:112
  br_flood+0x665/0x770 net/bridge/br_forward.c:225
  br_dev_xmit+0xa68/0x1550 net/bridge/br_device.c:87
  __netdev_start_xmit include/linux/netdevice.h:4080 [inline]
  netdev_start_xmit include/linux/netdevice.h:4089 [inline]
  xmit_one net/core/dev.c:3050 [inline]
  dev_hard_start_xmit+0x24e/0xac0 net/core/dev.c:3066
  __dev_queue_xmit+0x26bf/0x2fc0 net/core/dev.c:3581
  dev_queue_xmit+0x17/0x20 net/core/dev.c:3614
  neigh_resolve_output+0x5e2/0xa00 net/core/neighbour.c:1350
  neigh_output include/net/neighbour.h:482 [inline]
  ip_finish_output2+0x91a/0x1550 net/ipv4/ip_output.c:229
  ip_finish_output+0x864/0xd60 net/ipv4/ip_output.c:317
  NF_HOOK_COND include/linux/netfilter.h:277 [inline]
  ip_mc_output+0x271/0x1350 net/ipv4/ip_output.c:390
  dst_output include/net/dst.h:444 [inline]
  ip_local_out+0x95/0x160 net/ipv4/ip_output.c:124
  ip_queue_xmit+0x8c0/0x1920 net/ipv4/ip_output.c:504
  sctp_v4_xmit+0x108/0x140 net/sctp/protocol.c:942
  sctp_packet_transmit+0x22a5/0x37c0 net/sctp/output.c:642
  sctp_outq_flush+0xabb/0x4060 net/sctp/outqueue.c:911
  sctp_outq_uncork+0x5a/0x70 net/sctp/outqueue.c:776
  sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1820 [inline]
  sctp_side_effects net/sctp/sm_sideeffect.c:1220 [inline]
  sctp_do_sm+0x4e0/0x7040 net/sctp/sm_sideeffect.c:1191
  sctp_primitive_ASSOCIATE+0x9d/0xd0 net/sctp/primitive.c:88
  sctp_sendmsg_to_asoc+0x14bf/0x1ec0 net/sctp/socket.c:1900
  sctp_sendmsg+0xc50/0x1ad0 net/sctp/socket.c:2088
  inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:763
  sock_sendmsg_nosec net/socket.c:629 [inline]
  sock_sendmsg+0xca/0x110 net/socket.c:639
  ___sys_sendmsg+0x767/0x8b0 net/socket.c:2047
  __sys_sendmsg+0xe5/0x210 net/socket.c:2081
  SYSC_sendmsg net/socket.c:2092 [inline]
  SyS_sendmsg+0x2d/0x50 net/socket.c:2088
  do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
  entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4548b9
RSP: 002b:00007f43d1e5dc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f43d1e5e6d4 RCX: 00000000004548b9
RDX: 0000000000000040 RSI: 0000000020001f00 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004e3 R14: 00000000006f95e8 R15: 0000000000000000


---
This bug is generated by a dumb bot. It may contain errors.
See https://goo.gl/tpsmEJ for details.
Direct all questions to syzkaller@googlegroups.com.

syzbot will keep track of this bug report.
If you forgot to add the Reported-by tag, once the fix for this bug is  
merged
into any tree, please reply to this email with:
#syz fix: exact-commit-title
To mark this as a duplicate of another syzbot report, please reply with:
#syz dup: exact-subject-of-another-report
If it's a one-off invalid bug report, please reply with:
#syz invalid
Note: if the crash happens again, it will cause creation of a new bug  
report.
Note: all commands must start from beginning of the line in the email body.

^ permalink raw reply

* Re: [PATCH net-next v1] ipvs: fix multiplicative hashing in sh/dh/lblc/lblcr algorithms
From: Julian Anastasov @ 2018-04-01  8:11 UTC (permalink / raw)
  To: Vincent Bernat
  Cc: Wensong Zhang, Simon Horman, David S. Miller, netdev, lvs-devel
In-Reply-To: <20180331222838.32758-1-vincent@bernat.im>


	Hello,

On Sun, 1 Apr 2018, Vincent Bernat wrote:

> The sh/dh/lblc/lblcr algorithms are using Knuth's multiplicative
> hashing incorrectly. This results in uneven distribution.

	Good catch.

> To fix this, the result has to be shifted by a constant. In "Lecture
> 21: Hash functions" [1], it is said:
> 
>    In the fixed-point version, The division by 2^q is crucial. The
>    common mistake when doing multiplicative hashing is to forget to do
>    it, and in fact you can find web pages highly ranked by Google that
>    explain multiplicative hashing without this step. Without this
>    division, there is little point to multiplying by a, because ka mod
>    m = (k mod m) * (a mod m) mod m . This is no better than modular
>    hashing with a modulus of m, and quite possibly worse.
> 
> Typing the 2654435761 constant in DuckDuckGo shows many other sources
> to confirm this issue. Moreover, doing the multiplication in the 32bit
> integer space is enough, hence the change from 2654435761UL to
> 2654435761U.
> 
> [1]: https://www.cs.cornell.edu/courses/cs3110/2008fa/lectures/lec21.html
> 
> The following Python program illustrates the bug and its fix:
> 
>     import netaddr
>     import collections
>     import socket
>     import statistics
> 
>     def run(buggy=False):
>         base = netaddr.IPAddress('203.0.113.0')
>         count = collections.defaultdict(int)
>         for offset in range(100):
>             for port in range(10000, 11000):
>                 r = socket.ntohs(port) + socket.ntohl(int(base) + offset)
>                 r *= 2654435761
>                 if buggy:
>                     r %= 1 << 64
>                 else:
>                     r %= 1 << 32
>                     r >>= 24
>                 r &= 255
>                 count[r] += 1
> 
>         print(buggy,
>               statistics.mean(count.values()),
>               statistics.stdev(count.values()))
> 
>     run(True)
>     run(False)
> 
> Its output is:
> 
>     True 25000 765.9416862050705
>     False 390.625 4.681209831891333
> 
> Signed-off-by: Vincent Bernat <vincent@bernat.im>
> ---
>  net/netfilter/ipvs/ip_vs_dh.c    | 4 +++-
>  net/netfilter/ipvs/ip_vs_lblc.c  | 4 +++-
>  net/netfilter/ipvs/ip_vs_lblcr.c | 4 +++-
>  net/netfilter/ipvs/ip_vs_sh.c    | 3 ++-
>  4 files changed, 11 insertions(+), 4 deletions(-)
> 
> diff --git a/net/netfilter/ipvs/ip_vs_dh.c b/net/netfilter/ipvs/ip_vs_dh.c
> index 75f798f8e83b..5638e66dbdd1 100644
> --- a/net/netfilter/ipvs/ip_vs_dh.c
> +++ b/net/netfilter/ipvs/ip_vs_dh.c
> @@ -81,7 +81,9 @@ static inline unsigned int ip_vs_dh_hashkey(int af, const union nf_inet_addr *ad
>  		addr_fold = addr->ip6[0]^addr->ip6[1]^
>  			    addr->ip6[2]^addr->ip6[3];
>  #endif
> -	return (ntohl(addr_fold)*2654435761UL) & IP_VS_DH_TAB_MASK;
> +	return ((ntohl(addr_fold)*2654435761U) >>
> +		(32 - IP_VS_DH_TAB_BITS)) &
> +		IP_VS_DH_TAB_MASK;

	Looks like the '& mask' part is not needed, still,
it does not generate extra code. I see that other code uses
hash_32(val, bits) from include/linux/hash.h but note that it
used different ratio before Linux 4.7, in case someone backports
this patch on old kernels. So, I don't have preference what should
be used, may be return hash_32(ntohl(addr_fold), IP_VS_DH_TAB_BITS)
is better.

Regards

^ permalink raw reply

* Re: [PATCH net-next] net/mlx4_en: CHECKSUM_COMPLETE support for fragments
From: Tariq Toukan @ 2018-04-01  8:06 UTC (permalink / raw)
  To: Saeed Mahameed, Eric Dumazet
  Cc: David S . Miller, netdev, Eric Dumazet, Willem de Bruijn,
	Tariq Toukan
In-Reply-To: <CALzJLG-BEORd+YgBqk1E1PFd8fjzDkUDQGP29ApgMaQXTPJxqw@mail.gmail.com>



On 30/03/2018 3:34 AM, Saeed Mahameed wrote:
> On Tue, Mar 27, 2018 at 2:21 PM, Eric Dumazet <edumazet@google.com> wrote:
>> Refine the RX check summing handling to propagate the
>> hardware provided checksum so that we do not have to
>> compute it later in software.
>>
>> Signed-off-by: Eric Dumazet <edumazet@google.com>
>> Cc: Willem de Bruijn <willemb@google.com>
>> Cc: Tariq Toukan <tariqt@mellanox.com>
>> ---
>>   drivers/net/ethernet/mellanox/mlx4/en_rx.c | 10 ++++------
>>   1 file changed, 4 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
>> index 05787efef492b1c0c6ce540ef73647fad91ce282..5c613c6663da51a4ae792eeb4d8956b54655786b 100644
>> --- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
>> +++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
>> @@ -821,14 +821,12 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
>>                  skb_record_rx_queue(skb, cq_ring);
>>
>>                  if (likely(dev->features & NETIF_F_RXCSUM)) {
>> -                       if (cqe->status & cpu_to_be16(MLX4_CQE_STATUS_TCP |
>> -                                                     MLX4_CQE_STATUS_UDP)) {
>> +                       if ((cqe->status & cpu_to_be16(MLX4_CQE_STATUS_TCP |
>> +                                                      MLX4_CQE_STATUS_UDP)) &&
>> +                           (cqe->status & cpu_to_be16(MLX4_CQE_STATUS_IPOK)) &&
>> +                           cqe->checksum == cpu_to_be16(0xffff)) {
>>                                  bool l2_tunnel;
>>
> 
> LGTM, this code even aligns better with the mlx4 HW documentation:
> 
> "When L4_CSUM field is not supported, L4 checksum for TCP/UDP packets
> can be validated by: (IP_OK && (TCP || UDP)) && (checksum ==
> 0xFFFF))."
> 

Hi,
Thanks Eric for your patch.
Thanks Saeed for your review while I'm off-work.

In IP fragments, MLX4_CQE_STATUS_IPOK is not set in cqe->status.
This patch suggests falling back to CHECKSUM_COMPLETE instead of 
CHECKSUM_NONE.
Looks good to me.

> in the code we don't even consider L4_CSUM at the moment, As a future
> patch, it could be a nice acceleration for the above 3 steps
> condition.
> 

Right. Good idea. I'll add it to plans.

> Small comment, if we expect that  cqe->checksum is NOT likely to be
> 0xffff for UDP/TCP packets, maybe it is better performance wise to
> move (cqe->checksum == cpu_to_be16(0xffff)) to be evaluated first in
> the condition.
> 

It _is_ likely  for common TCP/UDP (no IP fragments).
Let's keep it this way.

>> -                               if (!((cqe->status & cpu_to_be16(MLX4_CQE_STATUS_IPOK)) &&
>> -                                     cqe->checksum == cpu_to_be16(0xffff)))
>> -                                       goto csum_none;
>> -
>>                                  l2_tunnel = (dev->hw_enc_features & NETIF_F_RXCSUM) &&
>>                                          (cqe->vlan_my_qpn & cpu_to_be32(MLX4_CQE_L2_TUNNEL));
>>                                  ip_summed = CHECKSUM_UNNECESSARY;
>> --
>> 2.17.0.rc1.321.gba9d0f2565-goog
>>

Acked-by: Tariq Toukan <tariqt@mellanox.com>

^ permalink raw reply

* Re: [PATCH net-next 00/11] mlxsw: Various cleanups
From: Ido Schimmel @ 2018-04-01  7:52 UTC (permalink / raw)
  To: David Miller; +Cc: netdev, jiri, petrm, mlxsw
In-Reply-To: <20180331.221451.179490368258343243.davem@davemloft.net>

On Sat, Mar 31, 2018 at 10:14:51PM -0400, David Miller wrote:
> From: David Miller <davem@davemloft.net>
> Date: Sat, 31 Mar 2018 21:54:50 -0400 (EDT)
> 
> > From: Ido Schimmel <idosch@mellanox.com>
> > Date: Thu, 29 Mar 2018 23:33:23 +0300
> > 
> >> The first 10 patches from Jiri perform small and unrelated cleanups. The
> >> largest being the conversion of the KVD linear partitions from a list to
> >> an array, which simplifies the code.
> >> 
> >> The last patch from Petr is a bug fix for a recent net-next commit that
> >> prevented the "kvd" resource from being marked as the parent of its
> >> various child resources (e.g., "/kvd/linear").
> > 
> > Series applied, thanks.
> 
> I'm going to have to revert this.
> 
> Changing the signature of devlink_resource_register() requires an update to
> the netdevsim driver, which you didn't do.

Right, thanks. Will fix in v2.

^ permalink raw reply

* Re: [PATCH net-next 09/11] devlink: convert occ_get op to separate registration
From: Ido Schimmel @ 2018-04-01  7:44 UTC (permalink / raw)
  To: David Ahern; +Cc: netdev, davem, jiri, petrm, mlxsw
In-Reply-To: <5f2dc834-0d8a-77ef-3d33-2228e7bd530c@gmail.com>

On Fri, Mar 30, 2018 at 08:45:50AM -0600, David Ahern wrote:
> On 3/29/18 2:33 PM, Ido Schimmel wrote:
> > From: Jiri Pirko <jiri@mellanox.com>
> > 
> > This resolves race during initialization where the resources with
> > ops are registered before driver and the structures used by occ_get
> > op is initialized. So keep occ_get callbacks registered only when
> > all structs are initialized.
> 
> Why can't the occ_get handler look at some flag in an mlxsw struct to
> know if the system has initialized?
> 
> Separate registration here is awkward. You register a resource and then
> register its op later.
> 
> Also, this should be a standalone patch rather than embedded in a
> 'mlxsw: Various cleanups' set.

I'll drop it from v2 and ask Jiri to post it as a standalone patch.

^ permalink raw reply

* Re: [PATCH net-next] net/broadcom: Fixup broken build due to function name change
From: kbuild test robot @ 2018-04-01  7:42 UTC (permalink / raw)
  To: Tal Gilboa
  Cc: kbuild-all, David S. Miller, netdev, Tariq Toukan, Tal Gilboa,
	Saeed Mahameed
In-Reply-To: <1522565293-12068-1-git-send-email-talgi@mellanox.com>

[-- Attachment #1: Type: text/plain, Size: 3504 bytes --]

Hi Tal,

I love your patch! Yet something to improve:

[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Tal-Gilboa/net-broadcom-Fixup-broken-build-due-to-function-name-change/20180401-145037
config: x86_64-randconfig-x005-201813 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/net/ethernet/broadcom/bcmsysport.c: In function 'bcm_sysport_set_coalesce':
>> drivers/net/ethernet/broadcom/bcmsysport.c:657:11: error: implicit declaration of function 'net_dim_get_def_rx_moderation'; did you mean 'net_dim_get_def_profile'? [-Werror=implicit-function-declaration]
      moder = net_dim_get_def_rx_moderation(priv->dim.dim.mode);
              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
              net_dim_get_def_profile
>> drivers/net/ethernet/broadcom/bcmsysport.c:657:9: error: incompatible types when assigning to type 'struct net_dim_cq_moder' from type 'int'
      moder = net_dim_get_def_rx_moderation(priv->dim.dim.mode);
            ^
   drivers/net/ethernet/broadcom/bcmsysport.c: In function 'bcm_sysport_init_rx_coalesce':
   drivers/net/ethernet/broadcom/bcmsysport.c:1439:9: error: incompatible types when assigning to type 'struct net_dim_cq_moder' from type 'int'
      moder = net_dim_get_def_rx_moderation(dim->dim.mode);
            ^
   cc1: some warnings being treated as errors

vim +657 drivers/net/ethernet/broadcom/bcmsysport.c

   624	
   625	static int bcm_sysport_set_coalesce(struct net_device *dev,
   626					    struct ethtool_coalesce *ec)
   627	{
   628		struct bcm_sysport_priv *priv = netdev_priv(dev);
   629		struct net_dim_cq_moder moder;
   630		u32 usecs, pkts;
   631		unsigned int i;
   632	
   633		/* Base system clock is 125Mhz, DMA timeout is this reference clock
   634		 * divided by 1024, which yield roughly 8.192 us, our maximum value has
   635		 * to fit in the RING_TIMEOUT_MASK (16 bits).
   636		 */
   637		if (ec->tx_max_coalesced_frames > RING_INTR_THRESH_MASK ||
   638		    ec->tx_coalesce_usecs > (RING_TIMEOUT_MASK * 8) + 1 ||
   639		    ec->rx_max_coalesced_frames > RDMA_INTR_THRESH_MASK ||
   640		    ec->rx_coalesce_usecs > (RDMA_TIMEOUT_MASK * 8) + 1)
   641			return -EINVAL;
   642	
   643		if ((ec->tx_coalesce_usecs == 0 && ec->tx_max_coalesced_frames == 0) ||
   644		    (ec->rx_coalesce_usecs == 0 && ec->rx_max_coalesced_frames == 0) ||
   645		    ec->use_adaptive_tx_coalesce)
   646			return -EINVAL;
   647	
   648		for (i = 0; i < dev->num_tx_queues; i++)
   649			bcm_sysport_set_tx_coalesce(&priv->tx_rings[i], ec);
   650	
   651		priv->rx_coalesce_usecs = ec->rx_coalesce_usecs;
   652		priv->rx_max_coalesced_frames = ec->rx_max_coalesced_frames;
   653		usecs = priv->rx_coalesce_usecs;
   654		pkts = priv->rx_max_coalesced_frames;
   655	
   656		if (ec->use_adaptive_rx_coalesce && !priv->dim.use_dim) {
 > 657			moder = net_dim_get_def_rx_moderation(priv->dim.dim.mode);
   658			usecs = moder.usec;
   659			pkts = moder.pkts;
   660		}
   661	
   662		priv->dim.use_dim = ec->use_adaptive_rx_coalesce;
   663	
   664		/* Apply desired coalescing parameters */
   665		bcm_sysport_set_rx_coalesce(priv, usecs, pkts);
   666	
   667		return 0;
   668	}
   669	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 36307 bytes --]

^ permalink raw reply

page: next (older) | prev (newer) | latest
- recent:[subjects (threaded)|topics (new)|topics (active)]

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox