* Re: linux-next: Tree for December 4 [not found] ` <200812061455.37331.m.kozlowski-NWF1p15JEu3VItvQsEIGlw@public.gmane.org> @ 2008-12-06 17:01 ` Stephen Hemminger [not found] ` <2681028.65321228582887579.JavaMail.root-bX68f012229Xuxj3zoTs5AC/G2K4zDHf@public.gmane.org> 0 siblings, 1 reply; 5+ messages in thread From: Stephen Hemminger @ 2008-12-06 17:01 UTC (permalink / raw) To: Mariusz Kozlowski Cc: kernel-testers-u79uwXL29TY76Z2rM5mHXA, linux-next-u79uwXL29TY76Z2rM5mHXA, LKML, Stephen Rothwell, David S. Miller Which ethernet device driver? ----- Original Message ----- From: "Mariusz Kozlowski" <m.kozlowski-NWF1p15JEu3VItvQsEIGlw@public.gmane.org> To: "Stephen Rothwell" <sfr-3FnU+UHB4dNDw9hX6IcOSA@public.gmane.org>, "Stephen Hemminger" <shemminger-ZtmgI6mnKB3QT0dZR+AlfA@public.gmane.org>, "David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org> Cc: kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-next-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "LKML" <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org> Sent: Saturday, December 6, 2008 5:55:37 AM GMT -08:00 US/Canada Pacific Subject: Re: linux-next: Tree for December 4 Hi, > I didn't run linux-next for some time. Today I gave it a shot and > a few interesting things poped out: > > Linux agpgart interface v0.103 > Serial: 8250/16550 driver4 ports, IRQ sharing enabled > serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A > serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A > ============================================================================= > BUG kmalloc-4096: Invalid object pointer 0xffff88007fb20010 > ----------------------------------------------------------------------------- I'm told the serial one is already fixed. > I also noticed my network wasn't reachable. That's probably not related to the kernel > but to check if my link is ok I run mii-tool and the result is NULL pointer dereference: > > BUG: unable to handle kernel NULL pointer dereference at 0000000000000138 > IP: [<ffffffff8042beff>] dev_ifsioc+0x1f/0x320 > PGD 736e3067 PUD 736ca067 PMD 0 > Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC > last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:05:01.0/resource > CPU 1 > Modules linked in: nfsd lockd sunrpc exportfs snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss usbhid gspca_zc3xx gspca_main compat_ioctl32 videodev v4l1_compat snd_mixer_oss usb_storage libusual ehci_hcd uhci_hcd usbcore parport_pc snd_hda_codec_realtek thermal parport snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer i2c_i801 snd soundcore snd_page_alloc sr_mod pcspkr sg i2c_core intel_agp processor rtc button cdrom > Pid: 4768, comm: mii-tool Not tainted 2.6.28-rc7-next-20081204 #1 > RIP: 0010:[<ffffffff8042beff>] [<ffffffff8042beff>] dev_ifsioc+0x1f/0x320 > RSP: 0018:ffff88006e623da8 EFLAGS: 00010246 > RAX: 0000000000000000 RBX: 0000000000008947 RCX: 00000000019369c2 > RDX: 0000000000000610 RSI: ffff88006e623e0c RDI: 00000000ffffffff > RBP: ffff88006e623e08 R08: 00000000019369c2 R09: 0000000000000001 > R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 > R13: 0000000000000000 R14: ffffffff80d7da40 R15: 00007fff55e4ee88 > FS: 00007f944de2f6f0(0000) GS:ffff88007f8047d0(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 0000000000000138 CR3: 000000006e4d9000 CR4: 00000000000006e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process mii-tool (pid: 4768, threadinfo ffff88006e622000, task ffff88006e45ba80) > Stack: > 0000000000008947 ffff88006e623e08 0000000000603400 ffffffff8042c4c7 > ffffe2000003f428 0000000000603400 0000000001213025 ffffffff8028e3fd > ffff88007d4f5500 00007f944db51330 ffff880076fbb180 0000000000000096 > Call Trace: > [<ffffffff8042c4c7>] ? dev_ioctl+0x2c7/0x590 > [<ffffffff8028e3fd>] ? __do_fault+0x1dd/0x4a0 > [<ffffffff8041de92>] ? sock_ioctl+0x72/0x250 > [<ffffffff802b971f>] ? vfs_ioctl+0x2f/0xa0 > [<ffffffff802b980d>] ? do_vfs_ioctl+0x7d/0x4c0 > [<ffffffff80492d1d>] ? lockdep_sys_exit_thunk+0x35/0x67 > [<ffffffff802b9c99>] ? sys_ioctl+0x49/0x80 > [<ffffffff8020b95b>] ? system_call_fastpath+0x16/0x1b > Code: f8 bd f1 ff e9 52 fe ff ff 0f 1f 00 48 83 ec 18 48 89 1c 24 89 d3 48 89 6c 24 08 4c 89 64 24 10 48 89 f5 e8 f4 d4 ff ff 49 89 c4 <48> 8b 88 38 01 00 00 8d 83 ec 76 ff ff 83 f8 5d 77 0f 89 c0 ff > RIP [<ffffffff8042beff>] dev_ifsioc+0x1f/0x320 > RSP <ffff88006e623da8> > CR2: 0000000000000138 > ---[ end trace 787e122ecd30f760 ]--- And this got bisected to: commit d314774cf2cd5dfeb39a00d37deee65d4c627927 Author: Stephen Hemminger <shemminger-ZtmgI6mnKB3QT0dZR+AlfA@public.gmane.org> Date: Wed Nov 19 21:32:24 2008 -0800 netdev: network device operations infrastructure This patch changes the network device internal API to move adminstrative operations out of the network device structure and into a separate structure. This patch involves some hackery to maintain compatablity between the new and old model, so all 300+ drivers don't have to be changed at once. For drivers that aren't converted yet, the netdevice_ops virt function list still resides in the net_device structure. For old protocols, the new net_device_ops are copied out to the old net_device pointers. After the transistion is completed the nag message can be changed to an WARN_ON, and the compatiablity code can be made configurable. Some function pointers aren't moved: * destructor can't be in net_device_ops because it may need to be referenced after the module is unloaded. * neighbor setup is manipulated in a couple of places that need special consideration * hard_start_xmit is in the fast path for transmit. Signed-off-by: Stephen Hemminger <shemminger-ZtmgI6mnKB3QT0dZR+AlfA@public.gmane.org> Signed-off-by: David S. Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org> (gdb) l *dev_ifsioc+0x1f 0xffffffff8042309f is in dev_ifsioc (/home/mako/linux/lkt/sources/linux-next/net/core/dev.c:3553). 3548 * Perform the SIOCxIFxxx calls, inside rtnl_lock() 3549 */ 3550 static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd) 3551 { 3552 int err; 3553 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); 3554 3555 if (!dev) 3556 return -ENODEV; 3557 > > > Full dmesg and .config is attached. > > Mariusz > > > Right before this there was also a rather long lockdep info triggered by starting skype: > > ====================================================== > [ INFO: soft-safe -> soft-unsafe lock order detected ] > 2.6.28-rc7-next-20081204 #1 > ------------------------------------------------------ > skype/4695 [HC0[0]:SC0[1]:HE1:SE0] is trying to acquire: > (&fbc->lock){--..}, at: [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > > and this task is already holding: > (slock-AF_INET){-+..}, at: [<ffffffff80453496>] tcp_close+0x166/0x4a0 > which would create a new lock dependency: > (slock-AF_INET){-+..} -> (&fbc->lock){--..} > > but this new dependency connects a soft-irq-safe lock: > (slock-AF_INET){-+..} > ... which became soft-irq-safe at: > [<ffffffffffffffff>] 0xffffffffffffffff > > to a soft-irq-unsafe lock: > (&fbc->lock){--..} > ... which became soft-irq-unsafe at: > ... [<ffffffff80265afd>] __lock_acquire+0x82d/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff802a6e21>] kmem_cache_alloc+0xd1/0xe0 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff802ad058>] get_empty_filp+0x68/0x140 > [<ffffffff802b7e7b>] path_lookup_open+0x3b/0xd0 > [<ffffffff802b07d4>] open_exec+0x24/0xd0 > [<ffffffff802ac4fa>] vfs_read+0x12a/0x160 > [<ffffffff802b0688>] kernel_read+0x38/0x50 > [<ffffffff802ea559>] load_elf_binary+0x18b9/0x1d20 > [<ffffffff8027f74f>] generic_file_aio_read+0x4ff/0x5e0 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff802ec040>] load_elf_binary+0x0/0x1e70 > [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 > [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 > [<ffffffff802e7640>] load_script+0x270/0x280 > [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 > [<ffffffff802e73d0>] load_script+0x0/0x280 > [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 > [<ffffffff802b18de>] do_execve+0x22e/0x290 > [<ffffffff80209b49>] sys_execve+0x49/0x80 > [<ffffffff8020bdfa>] stub_execve+0x6a/0xc0 > [<ffffffffffffffff>] 0xffffffffffffffff > > other info that might help us debug this: > > 1 lock held by skype/4695: > #0: (slock-AF_INET){-+..}, at: [<ffffffff80453496>] tcp_close+0x166/0x4a0 > > the soft-irq-safe lock's dependencies: > -> (slock-AF_INET){-+..} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 > [<ffffffff80493108>] _spin_lock_bh+0x38/0x50 > [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 > [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff804681bb>] udp_destroy_sock+0xb/0x20 > [<ffffffff8041f558>] sk_common_release+0x18/0x80 > [<ffffffff8046f7fe>] inet_release+0x3e/0x70 > [<ffffffff8041c9f9>] sock_release+0x19/0xb0 > [<ffffffff8041cfe2>] sock_close+0x12/0x40 > [<ffffffff802ace0b>] __fput+0xbb/0x200 > [<ffffffff802a9cc4>] filp_close+0x54/0x90 > [<ffffffff802a9d9f>] sys_close+0x9f/0x110 > [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > hardirq-on-W at: > [<ffffffff80265ad5>] __lock_acquire+0x805/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 > [<ffffffff80493108>] _spin_lock_bh+0x38/0x50 > [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 > [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff804681bb>] udp_destroy_sock+0xb/0x20 > [<ffffffff8041f558>] sk_common_release+0x18/0x80 > [<ffffffff8046f7fe>] inet_release+0x3e/0x70 > [<ffffffff8041c9f9>] sock_release+0x19/0xb0 > [<ffffffff8041cfe2>] sock_close+0x12/0x40 > [<ffffffff802ace0b>] __fput+0xbb/0x200 > [<ffffffff802a9cc4>] filp_close+0x54/0x90 > [<ffffffff802a9d9f>] sys_close+0x9f/0x110 > [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff80d7d650>] af_family_slock_keys+0x10/0x120 > -> (&rt_hash_locks[i]){-+..} ops: 0 { > initial-use at: > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > hardirq-on-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff80d7e714>] __key.40927+0x0/0x8 > -> (&zone->lock){.+..} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff802825e6>] free_pages_bulk+0x36/0x300 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff802825e6>] free_pages_bulk+0x36/0x300 > [<ffffffff802825e6>] free_pages_bulk+0x36/0x300 > [<ffffffff802831d2>] free_hot_cold_page+0x262/0x2f0 > [<ffffffff80624c88>] free_all_bootmem_core+0xd8/0x240 > [<ffffffff80496d0d>] _etext+0x0/0x3 > [<ffffffff8062085c>] mem_init+0x3c/0x190 > [<ffffffff80611cff>] start_kernel+0x28f/0x440 > [<ffffffff8061136a>] x86_64_start_kernel+0xca/0xe0 > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff80d6ded0>] __key.29131+0x0/0x8 > ... acquired at: > [<ffffffff802838a5>] get_page_from_freelist+0x525/0x5b0 > [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff802838a5>] get_page_from_freelist+0x525/0x5b0 > [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 > [<ffffffff802838a5>] get_page_from_freelist+0x525/0x5b0 > [<ffffffff802838a5>] get_page_from_freelist+0x525/0x5b0 > [<ffffffff80283bfa>] __alloc_pages_internal+0xaa/0x450 > [<ffffffff802a64da>] __slab_alloc+0x17a/0x670 > [<ffffffff80431e54>] neigh_create+0x74/0x5b0 > [<ffffffff80431e54>] neigh_create+0x74/0x5b0 > [<ffffffff802a6e0f>] kmem_cache_alloc+0xbf/0xe0 > [<ffffffff80431e54>] neigh_create+0x74/0x5b0 > [<ffffffff80263821>] trace_hardirqs_on_caller+0x71/0x180 > [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 > [<ffffffff8043135a>] neigh_lookup+0x10a/0x140 > [<ffffffff80469911>] arp_bind_neighbour+0xa1/0xb0 > [<ffffffff80441e98>] rt_intern_hash+0x208/0x4f0 > [<ffffffff8027c2fd>] __rcu_read_unlock+0xcd/0xe0 > [<ffffffff80442593>] __ip_route_output_key+0x413/0xa60 > [<ffffffff804650a7>] ip4_datagram_connect+0x177/0x2a0 > [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 > [<ffffffff8041bd76>] sys_connect+0x86/0xe0 > [<ffffffff8020c3ad>] retint_swapgs+0xe/0x13 > [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 > [<ffffffff80492ca7>] trace_hardirqs_on_thunk+0x3a/0x3f > [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b > [<ffffffffffffffff>] 0xffffffffffffffff > > ... acquired at: > [<ffffffffffffffff>] 0xffffffffffffffff > > -> (rt_peer_lock){-+..} ops: 0 { > initial-use at: > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > hardirq-on-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff805ea3b8>] rt_peer_lock.41771+0x18/0x40 > ... acquired at: > [<ffffffffffffffff>] 0xffffffffffffffff > > -> (inet_peer_idlock){-+..} ops: 0 { > initial-use at: > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > hardirq-on-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff805ea958>] inet_peer_idlock+0x18/0x40 > ... acquired at: > [<ffffffffffffffff>] 0xffffffffffffffff > > -> (&n->lock){-+-+} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 > [<ffffffff80493198>] _write_lock_bh+0x38/0x50 > [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 > [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 > [<ffffffff804335b7>] neigh_resolve_output+0x147/0x2d0 > [<ffffffff8044a51d>] ip_generic_getfrag+0x4d/0x90 > [<ffffffff8044896c>] ip_push_pending_frames+0x27c/0x400 > [<ffffffff80467153>] udp_push_pending_frames+0x233/0x3c0 > [<ffffffff80468531>] udp_sendmsg+0x361/0x730 > [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 > [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 > [<ffffffff8043135a>] neigh_lookup+0x10a/0x140 > [<ffffffff8041c3fb>] sock_sendmsg+0xcb/0x100 > [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80254370>] autoremove_wake_function+0x0/0x30 > [<ffffffff8028e3fd>] __do_fault+0x1dd/0x4a0 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff8041bac1>] sockfd_lookup_light+0x41/0x80 > [<ffffffff8041c8a9>] sys_sendto+0x119/0x180 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80468e40>] udp_poll+0x0/0x120 > [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > hardirq-on-W at: > [<ffffffff80265ad5>] __lock_acquire+0x805/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 > [<ffffffff80493198>] _write_lock_bh+0x38/0x50 > [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 > [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 > [<ffffffff804335b7>] neigh_resolve_output+0x147/0x2d0 > [<ffffffff8044a51d>] ip_generic_getfrag+0x4d/0x90 > [<ffffffff8044896c>] ip_push_pending_frames+0x27c/0x400 > [<ffffffff80467153>] udp_push_pending_frames+0x233/0x3c0 > [<ffffffff80468531>] udp_sendmsg+0x361/0x730 > [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 > [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 > [<ffffffff8043135a>] neigh_lookup+0x10a/0x140 > [<ffffffff8041c3fb>] sock_sendmsg+0xcb/0x100 > [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80254370>] autoremove_wake_function+0x0/0x30 > [<ffffffff8028e3fd>] __do_fault+0x1dd/0x4a0 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff8041bac1>] sockfd_lookup_light+0x41/0x80 > [<ffffffff8041c8a9>] sys_sendto+0x119/0x180 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80468e40>] udp_poll+0x0/0x120 > [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-R at: > [<ffffffffffffffff>] 0xffffffffffffffff > hardirq-on-R at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff80d7e3a4>] __key.31965+0x0/0xc > -> (&base->lock){++..} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80248c44>] lock_timer_base+0x34/0x70 > [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 > [<ffffffff80248c44>] lock_timer_base+0x34/0x70 > [<ffffffff80248c44>] lock_timer_base+0x34/0x70 > [<ffffffff80493735>] _spin_unlock_irqrestore+0x65/0x80 > [<ffffffff80248d3a>] __mod_timer+0x2a/0xe0 > [<ffffffff80493710>] _spin_unlock_irqrestore+0x40/0x80 > [<ffffffff8062da24>] con_init+0x274/0x2a0 > [<ffffffff8062d00a>] console_init+0x1a/0x30 > [<ffffffff80611cd5>] start_kernel+0x265/0x440 > [<ffffffff8061136a>] x86_64_start_kernel+0xca/0xe0 > [<ffffffffffffffff>] 0xffffffffffffffff > in-hardirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff8077f918>] __key.21559+0x0/0x8 > ... acquired at: > [<ffffffff80248c44>] lock_timer_base+0x34/0x70 > [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80248c44>] lock_timer_base+0x34/0x70 > [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 > [<ffffffff80248c44>] lock_timer_base+0x34/0x70 > [<ffffffff80248c44>] lock_timer_base+0x34/0x70 > [<ffffffff80248d3a>] __mod_timer+0x2a/0xe0 > [<ffffffff80430bb7>] neigh_add_timer+0x17/0x40 > [<ffffffff80430cb3>] __neigh_event_send+0xd3/0x200 > [<ffffffff804335b7>] neigh_resolve_output+0x147/0x2d0 > [<ffffffff8044a51d>] ip_generic_getfrag+0x4d/0x90 > [<ffffffff8044896c>] ip_push_pending_frames+0x27c/0x400 > [<ffffffff80467153>] udp_push_pending_frames+0x233/0x3c0 > [<ffffffff80468531>] udp_sendmsg+0x361/0x730 > [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 > [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 > [<ffffffff8043135a>] neigh_lookup+0x10a/0x140 > [<ffffffff8041c3fb>] sock_sendmsg+0xcb/0x100 > [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80254370>] autoremove_wake_function+0x0/0x30 > [<ffffffff8028e3fd>] __do_fault+0x1dd/0x4a0 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff8041bac1>] sockfd_lookup_light+0x41/0x80 > [<ffffffff8041c8a9>] sys_sendto+0x119/0x180 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80468e40>] udp_poll+0x0/0x120 > [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b > [<ffffffffffffffff>] 0xffffffffffffffff > > -> (&list->lock#3){.+..} ops: 0 { > initial-use at: > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff80d7e394>] __key.17594+0x0/0x8 > ... acquired at: > [<ffffffffffffffff>] 0xffffffffffffffff > > ... acquired at: > [<ffffffffffffffff>] 0xffffffffffffffff > > -> (&list->lock){-+..} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80422d84>] skb_queue_tail+0x24/0x60 > [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 > [<ffffffff80422d84>] skb_queue_tail+0x24/0x60 > [<ffffffff80422d84>] skb_queue_tail+0x24/0x60 > [<ffffffff8043d0ed>] netlink_broadcast+0x2cd/0x3c0 > [<ffffffff803449b6>] kobject_uevent_env+0x336/0x3f0 > [<ffffffff80344adf>] kobject_action_type+0x5f/0xb0 > [<ffffffff803c9139>] bus_uevent_store+0x39/0x50 > [<ffffffff80300aec>] sysfs_write_file+0xcc/0x150 > [<ffffffff802ac328>] vfs_write+0xc8/0x170 > [<ffffffff802ac903>] sys_write+0x53/0x90 > [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > hardirq-on-W at: > [<ffffffff80265ad5>] __lock_acquire+0x805/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80468e94>] udp_poll+0x54/0x120 > [<ffffffff80493108>] _spin_lock_bh+0x38/0x50 > [<ffffffff80468e94>] udp_poll+0x54/0x120 > [<ffffffff80468e94>] udp_poll+0x54/0x120 > [<ffffffff802bab22>] do_sys_poll+0x1e2/0x3d0 > [<ffffffff802bb9f0>] __pollwait+0x0/0x130 > [<ffffffff80234f50>] default_wake_function+0x0/0x10 > [<ffffffff80234f50>] default_wake_function+0x0/0x10 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff802636b2>] mark_held_locks+0x42/0x90 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff8027c2fd>] __rcu_read_unlock+0xcd/0xe0 > [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff8028e3fd>] __do_fault+0x1dd/0x4a0 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff8020c3ad>] retint_swapgs+0xe/0x13 > [<ffffffff802bad83>] sys_poll+0x73/0xf0 > [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff80d7d4d4>] __key.24456+0x0/0x8 > ... acquired at: > [<ffffffffffffffff>] 0xffffffffffffffff > > -> (&q->lock){++..} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff8048ffc7>] wait_for_common+0x37/0x190 > [<ffffffff804932d9>] _spin_lock_irq+0x39/0x50 > [<ffffffff8048ffc7>] wait_for_common+0x37/0x190 > [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 > [<ffffffff8048ffc7>] wait_for_common+0x37/0x190 > [<ffffffff80493710>] _spin_unlock_irqrestore+0x40/0x80 > [<ffffffff80234e67>] try_to_wake_up+0x107/0x1f0 > [<ffffffff802541ea>] kthread_create+0x9a/0x110 > [<ffffffff802389b0>] migration_thread+0x0/0x290 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff8021273f>] init_pit_timer+0x1f/0xc0 > [<ffffffff802636b2>] mark_held_locks+0x42/0x90 > [<ffffffff80493735>] _spin_unlock_irqrestore+0x65/0x80 > [<ffffffff80621a90>] migration_init+0x0/0x60 > [<ffffffff8048e204>] migration_call+0x244/0x580 > [<ffffffff80493710>] _spin_unlock_irqrestore+0x40/0x80 > [<ffffffff80621a90>] migration_init+0x0/0x60 > [<ffffffff80621ab1>] migration_init+0x21/0x60 > [<ffffffff80621a90>] migration_init+0x0/0x60 > [<ffffffff8020903b>] _stext+0x3b/0x170 > [<ffffffff80493609>] _spin_unlock+0x29/0x50 > [<ffffffff80223930>] get_apic_id+0x0/0x10 > [<ffffffff8061aaab>] native_smp_prepare_cpus+0x1ab/0x460 > [<ffffffff806118c0>] kernel_init+0x70/0x1f0 > [<ffffffff8020c9fa>] child_rip+0xa/0x20 > [<ffffffff8020c3c0>] restore_args+0x0/0x30 > [<ffffffff80611850>] kernel_init+0x0/0x1f0 > [<ffffffff8020c9f0>] child_rip+0x0/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > in-hardirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff80780058>] __key.16756+0x0/0x8 > -> (&rq->lock){++..} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80234b93>] rq_attach_root+0x23/0xe0 > [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 > [<ffffffff80234b93>] rq_attach_root+0x23/0xe0 > [<ffffffff80234b93>] rq_attach_root+0x23/0xe0 > [<ffffffff80622035>] sched_init+0x375/0x510 > [<ffffffff80611c04>] start_kernel+0x194/0x440 > [<ffffffff8061136a>] x86_64_start_kernel+0xca/0xe0 > [<ffffffffffffffff>] 0xffffffffffffffff > in-hardirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff8067b0d8>] __key.42751+0x0/0x8 > -> (&vec->lock){.+..} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 > [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 > [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 > [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 > [<ffffffff802302b1>] set_rq_online+0x51/0x70 > [<ffffffff80234b93>] rq_attach_root+0x23/0xe0 > [<ffffffff80234bfd>] rq_attach_root+0x8d/0xe0 > [<ffffffff80622035>] sched_init+0x375/0x510 > [<ffffffff80611c04>] start_kernel+0x194/0x440 > [<ffffffff8061136a>] x86_64_start_kernel+0xca/0xe0 > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff80d6de50>] __key.13804+0x0/0x8 > ... acquired at: > [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 > [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 > [<ffffffff80260f57>] save_trace+0x37/0xa0 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 > [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 > [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 > [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 > [<ffffffff802302b1>] set_rq_online+0x51/0x70 > [<ffffffff80234b93>] rq_attach_root+0x23/0xe0 > [<ffffffff80234bfd>] rq_attach_root+0x8d/0xe0 > [<ffffffff80622035>] sched_init+0x375/0x510 > [<ffffffff80611c04>] start_kernel+0x194/0x440 > [<ffffffff8061136a>] x86_64_start_kernel+0xca/0xe0 > [<ffffffffffffffff>] 0xffffffffffffffff > > -> (&rt_b->rt_runtime_lock){.+..} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 > [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 > [<ffffffff80233aeb>] enqueue_task_rt+0x3b/0x80 > [<ffffffff8022f1ab>] enqueue_task+0xb/0x20 > [<ffffffff8022f23a>] activate_task+0x1a/0x30 > [<ffffffff80234f3d>] try_to_wake_up+0x1dd/0x1f0 > [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 > [<ffffffff8048e024>] migration_call+0x64/0x580 > [<ffffffff80621ace>] migration_init+0x3e/0x60 > [<ffffffff80621a90>] migration_init+0x0/0x60 > [<ffffffff8020903b>] _stext+0x3b/0x170 > [<ffffffff80493609>] _spin_unlock+0x29/0x50 > [<ffffffff80223930>] get_apic_id+0x0/0x10 > [<ffffffff8061aaab>] native_smp_prepare_cpus+0x1ab/0x460 > [<ffffffff806118c0>] kernel_init+0x70/0x1f0 > [<ffffffff8020c9fa>] child_rip+0xa/0x20 > [<ffffffff8020c3c0>] restore_args+0x0/0x30 > [<ffffffff80611850>] kernel_init+0x0/0x1f0 > [<ffffffff8020c9f0>] child_rip+0x0/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff8067b0e0>] __key.34599+0x0/0x8 > -> (&cpu_base->lock){++..} ops: 0 { > initial-use at: > [<ffffffffffffffff>] 0xffffffffffffffff > in-hardirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff80780094>] __key.18863+0x0/0x8 > ... acquired at: > [<ffffffff80257589>] lock_hrtimer_base+0x29/0x60 > [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80257589>] lock_hrtimer_base+0x29/0x60 > [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 > [<ffffffff80257589>] lock_hrtimer_base+0x29/0x60 > [<ffffffff80257589>] lock_hrtimer_base+0x29/0x60 > [<ffffffff80257722>] hrtimer_start_range_ns+0x42/0x200 > [<ffffffff80257af5>] ktime_get_ts+0x25/0x60 > [<ffffffff80233a55>] __enqueue_rt_entity+0x125/0x180 > [<ffffffff80233aeb>] enqueue_task_rt+0x3b/0x80 > [<ffffffff8022f1ab>] enqueue_task+0xb/0x20 > [<ffffffff8022f23a>] activate_task+0x1a/0x30 > [<ffffffff80234f3d>] try_to_wake_up+0x1dd/0x1f0 > [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 > [<ffffffff8048e024>] migration_call+0x64/0x580 > [<ffffffff80621ace>] migration_init+0x3e/0x60 > [<ffffffff80621a90>] migration_init+0x0/0x60 > [<ffffffff8020903b>] _stext+0x3b/0x170 > [<ffffffff80493609>] _spin_unlock+0x29/0x50 > [<ffffffff80223930>] get_apic_id+0x0/0x10 > [<ffffffff8061aaab>] native_smp_prepare_cpus+0x1ab/0x460 > [<ffffffff806118c0>] kernel_init+0x70/0x1f0 > [<ffffffff8020c9fa>] child_rip+0xa/0x20 > [<ffffffff8020c3c0>] restore_args+0x0/0x30 > [<ffffffff80611850>] kernel_init+0x0/0x1f0 > [<ffffffff8020c9f0>] child_rip+0x0/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > > -> (&rt_rq->rt_runtime_lock){+...} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80237e50>] update_curr_rt+0x110/0x190 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff80237e50>] update_curr_rt+0x110/0x190 > [<ffffffff80237e50>] update_curr_rt+0x110/0x190 > [<ffffffff80237fe9>] dequeue_task_rt+0x19/0x50 > [<ffffffff8022f20f>] dequeue_task+0x4f/0x60 > [<ffffffff8022f26a>] deactivate_task+0x1a/0x20 > [<ffffffff80490507>] thread_return+0xe3/0x59c > [<ffffffff802389b0>] migration_thread+0x0/0x290 > [<ffffffff80493774>] _spin_unlock_irq+0x24/0x50 > [<ffffffff802389b0>] migration_thread+0x0/0x290 > [<ffffffff802389b0>] migration_thread+0x0/0x290 > [<ffffffff80238b2f>] migration_thread+0x17f/0x290 > [<ffffffff802389b0>] migration_thread+0x0/0x290 > [<ffffffff80253f6b>] kthread+0x4b/0x80 > [<ffffffff8020c9fa>] child_rip+0xa/0x20 > [<ffffffff8020c3c0>] restore_args+0x0/0x30 > [<ffffffff80253f20>] kthread+0x0/0x80 > [<ffffffff8020c9f0>] child_rip+0x0/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > in-hardirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff8067b0e8>] __key.42703+0x0/0x8 > ... acquired at: > [<ffffffff802321c2>] __enable_runtime+0x42/0xa0 > [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff802321c2>] __enable_runtime+0x42/0xa0 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff802321c2>] __enable_runtime+0x42/0xa0 > [<ffffffff802321c2>] __enable_runtime+0x42/0xa0 > [<ffffffff802336e4>] rq_online_rt+0x24/0x70 > [<ffffffff802302b1>] set_rq_online+0x51/0x70 > [<ffffffff8048e03d>] migration_call+0x7d/0x580 > [<ffffffff8048e065>] migration_call+0xa5/0x580 > [<ffffffff80258c71>] notifier_call_chain+0x51/0x70 > [<ffffffff8048e836>] _cpu_up+0xe6/0x140 > [<ffffffff8048e8e9>] cpu_up+0x59/0x80 > [<ffffffff80611944>] kernel_init+0xf4/0x1f0 > [<ffffffff8020c9fa>] child_rip+0xa/0x20 > [<ffffffff8020c3c0>] restore_args+0x0/0x30 > [<ffffffff80611850>] kernel_init+0x0/0x1f0 > [<ffffffff8020c9f0>] child_rip+0x0/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > > ... acquired at: > [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 > [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 > [<ffffffff80260f57>] save_trace+0x37/0xa0 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 > [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 > [<ffffffff80233aeb>] enqueue_task_rt+0x3b/0x80 > [<ffffffff8022f1ab>] enqueue_task+0xb/0x20 > [<ffffffff8022f23a>] activate_task+0x1a/0x30 > [<ffffffff80234f3d>] try_to_wake_up+0x1dd/0x1f0 > [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 > [<ffffffff8048e024>] migration_call+0x64/0x580 > [<ffffffff80621ace>] migration_init+0x3e/0x60 > [<ffffffff80621a90>] migration_init+0x0/0x60 > [<ffffffff8020903b>] _stext+0x3b/0x170 > [<ffffffff80493609>] _spin_unlock+0x29/0x50 > [<ffffffff80223930>] get_apic_id+0x0/0x10 > [<ffffffff8061aaab>] native_smp_prepare_cpus+0x1ab/0x460 > [<ffffffff806118c0>] kernel_init+0x70/0x1f0 > [<ffffffff8020c9fa>] child_rip+0xa/0x20 > [<ffffffff8020c3c0>] restore_args+0x0/0x30 > [<ffffffff80611850>] kernel_init+0x0/0x1f0 > [<ffffffff8020c9f0>] child_rip+0x0/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > > ... acquired at: > [<ffffffff80237e50>] update_curr_rt+0x110/0x190 > [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 > [<ffffffff80260f57>] save_trace+0x37/0xa0 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff80237e50>] update_curr_rt+0x110/0x190 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff80237e50>] update_curr_rt+0x110/0x190 > [<ffffffff80237e50>] update_curr_rt+0x110/0x190 > [<ffffffff80237fe9>] dequeue_task_rt+0x19/0x50 > [<ffffffff8022f20f>] dequeue_task+0x4f/0x60 > [<ffffffff8022f26a>] deactivate_task+0x1a/0x20 > [<ffffffff80490507>] thread_return+0xe3/0x59c > [<ffffffff802389b0>] migration_thread+0x0/0x290 > [<ffffffff80493774>] _spin_unlock_irq+0x24/0x50 > [<ffffffff802389b0>] migration_thread+0x0/0x290 > [<ffffffff802389b0>] migration_thread+0x0/0x290 > [<ffffffff80238b2f>] migration_thread+0x17f/0x290 > [<ffffffff802389b0>] migration_thread+0x0/0x290 > [<ffffffff80253f6b>] kthread+0x4b/0x80 > [<ffffffff8020c9fa>] child_rip+0xa/0x20 > [<ffffffff8020c3c0>] restore_args+0x0/0x30 > [<ffffffff80253f20>] kthread+0x0/0x80 > [<ffffffff8020c9f0>] child_rip+0x0/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > > -> (&rq->lock/1){.+..} ops: 0 { > initial-use at: > [<ffffffffffffffff>] 0xffffffffffffffff > in-softirq-W at: > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff8067b0d9>] __key.42751+0x1/0x8 > ... acquired at: > [<ffffffffffffffff>] 0xffffffffffffffff > > ... acquired at: > [<ffffffff802308a3>] task_rq_lock+0x53/0xa0 > [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff802308a3>] task_rq_lock+0x53/0xa0 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff802308a3>] task_rq_lock+0x53/0xa0 > [<ffffffff802308a3>] task_rq_lock+0x53/0xa0 > [<ffffffff80234df3>] try_to_wake_up+0x93/0x1f0 > [<ffffffff8022f58b>] __wake_up_common+0x5b/0x90 > [<ffffffff8023066d>] complete+0x3d/0x60 > [<ffffffff802540b9>] kthreadd+0x119/0x1b0 > [<ffffffff8020c3c0>] restore_args+0x0/0x30 > [<ffffffff8020c9fa>] child_rip+0xa/0x20 > [<ffffffff8020c3c0>] restore_args+0x0/0x30 > [<ffffffff80253fa0>] kthreadd+0x0/0x1b0 > [<ffffffff8020c9f0>] child_rip+0x0/0x20 > [<ffffffffffffffff>] 0xffffffffffffffff > > ... acquired at: > [<ffffffffffffffff>] 0xffffffffffffffff > > > the soft-irq-unsafe lock's dependencies: > -> (&fbc->lock){--..} ops: 0 { > initial-use at: > [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff802a6e21>] kmem_cache_alloc+0xd1/0xe0 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff802ad058>] get_empty_filp+0x68/0x140 > [<ffffffff802b7e7b>] path_lookup_open+0x3b/0xd0 > [<ffffffff802b07d4>] open_exec+0x24/0xd0 > [<ffffffff802ac4fa>] vfs_read+0x12a/0x160 > [<ffffffff802b0688>] kernel_read+0x38/0x50 > [<ffffffff802ea559>] load_elf_binary+0x18b9/0x1d20 > [<ffffffff8027f74f>] generic_file_aio_read+0x4ff/0x5e0 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff802ec040>] load_elf_binary+0x0/0x1e70 > [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 > [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 > [<ffffffff802e7640>] load_script+0x270/0x280 > [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 > [<ffffffff802e73d0>] load_script+0x0/0x280 > [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 > [<ffffffff802b18de>] do_execve+0x22e/0x290 > [<ffffffff80209b49>] sys_execve+0x49/0x80 > [<ffffffff8020bdfa>] stub_execve+0x6a/0xc0 > [<ffffffffffffffff>] 0xffffffffffffffff > softirq-on-W at: > [<ffffffff80265afd>] __lock_acquire+0x82d/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff802a6e21>] kmem_cache_alloc+0xd1/0xe0 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff802ad058>] get_empty_filp+0x68/0x140 > [<ffffffff802b7e7b>] path_lookup_open+0x3b/0xd0 > [<ffffffff802b07d4>] open_exec+0x24/0xd0 > [<ffffffff802ac4fa>] vfs_read+0x12a/0x160 > [<ffffffff802b0688>] kernel_read+0x38/0x50 > [<ffffffff802ea559>] load_elf_binary+0x18b9/0x1d20 > [<ffffffff8027f74f>] generic_file_aio_read+0x4ff/0x5e0 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff802ec040>] load_elf_binary+0x0/0x1e70 > [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 > [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 > [<ffffffff802e7640>] load_script+0x270/0x280 > [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 > [<ffffffff802e73d0>] load_script+0x0/0x280 > [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 > [<ffffffff802b18de>] do_execve+0x22e/0x290 > [<ffffffff80209b49>] sys_execve+0x49/0x80 > [<ffffffff8020bdfa>] stub_execve+0x6a/0xc0 > [<ffffffffffffffff>] 0xffffffffffffffff > hardirq-on-W at: > [<ffffffff80265ad5>] __lock_acquire+0x805/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff802a6e21>] kmem_cache_alloc+0xd1/0xe0 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff802ad058>] get_empty_filp+0x68/0x140 > [<ffffffff802b7e7b>] path_lookup_open+0x3b/0xd0 > [<ffffffff802b07d4>] open_exec+0x24/0xd0 > [<ffffffff802ac4fa>] vfs_read+0x12a/0x160 > [<ffffffff802b0688>] kernel_read+0x38/0x50 > [<ffffffff802ea559>] load_elf_binary+0x18b9/0x1d20 > [<ffffffff8027f74f>] generic_file_aio_read+0x4ff/0x5e0 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80264530>] validate_chain+0x460/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff802ec040>] load_elf_binary+0x0/0x1e70 > [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 > [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 > [<ffffffff802e7640>] load_script+0x270/0x280 > [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 > [<ffffffff802e73d0>] load_script+0x0/0x280 > [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 > [<ffffffff802b18de>] do_execve+0x22e/0x290 > [<ffffffff80209b49>] sys_execve+0x49/0x80 > [<ffffffff8020bdfa>] stub_execve+0x6a/0xc0 > [<ffffffffffffffff>] 0xffffffffffffffff > } > ... key at: [<ffffffff80d736d4>] __key.10917+0x0/0x8 > > stack backtrace: > Pid: 4695, comm: skype Not tainted 2.6.28-rc7-next-20081204 #1 > Call Trace: > [<ffffffff80263ed2>] check_usage+0x362/0x480 > [<ffffffff802649a0>] validate_chain+0x8d0/0x1200 > [<ffffffff80265717>] __lock_acquire+0x447/0xa50 > [<ffffffff80265d73>] lock_acquire+0x53/0x70 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff804930c3>] _spin_lock+0x33/0x40 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 > [<ffffffff8044ee36>] inet_csk_destroy_sock+0x46/0xf0 > [<ffffffff80453650>] tcp_close+0x320/0x4a0 > [<ffffffff8046f7fe>] inet_release+0x3e/0x70 > [<ffffffff8041c9f9>] sock_release+0x19/0xb0 > [<ffffffff8041cfe2>] sock_close+0x12/0x40 > [<ffffffff802ace0b>] __fput+0xbb/0x200 > [<ffffffff802a9cc4>] filp_close+0x54/0x90 > [<ffffffff802a9d9f>] sys_close+0x9f/0x110 > [<ffffffff8022b9d4>] sysenter_dispatch+0x7/0x30 > [<ffffffff80492ca7>] trace_hardirqs_on_thunk+0x3a/0x3f > ^ permalink raw reply [flat|nested] 5+ messages in thread
[parent not found: <2681028.65321228582887579.JavaMail.root-bX68f012229Xuxj3zoTs5AC/G2K4zDHf@public.gmane.org>]
* Re: linux-next: Tree for December 4 [not found] ` <2681028.65321228582887579.JavaMail.root-bX68f012229Xuxj3zoTs5AC/G2K4zDHf@public.gmane.org> @ 2008-12-06 17:30 ` Mariusz Kozlowski 0 siblings, 0 replies; 5+ messages in thread From: Mariusz Kozlowski @ 2008-12-06 17:30 UTC (permalink / raw) To: Stephen Hemminger Cc: kernel-testers-u79uwXL29TY76Z2rM5mHXA, linux-next-u79uwXL29TY76Z2rM5mHXA, LKML, Stephen Rothwell, David S. Miller > Which ethernet device driver? That would be realtek 8169 gigabit ethernet - aka r8169. Btw. In original thread you have dmesg and .config attached. Mariusz > ----- Original Message ----- > From: "Mariusz Kozlowski" <m.kozlowski-NWF1p15JEu3VItvQsEIGlw@public.gmane.org> > To: "Stephen Rothwell" <sfr-3FnU+UHB4dNDw9hX6IcOSA@public.gmane.org>, "Stephen Hemminger" <shemminger-ZtmgI6mnKB3QT0dZR+AlfA@public.gmane.org>, "David S. Miller" <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org> > Cc: kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-next-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "LKML" <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org> > Sent: Saturday, December 6, 2008 5:55:37 AM GMT -08:00 US/Canada Pacific > Subject: Re: linux-next: Tree for December 4 > > Hi, > > > I didn't run linux-next for some time. Today I gave it a shot and > > a few interesting things poped out: > > > > Linux agpgart interface v0.103 > > Serial: 8250/16550 driver4 ports, IRQ sharing enabled > > serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A > > serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A > > ============================================================================= > > BUG kmalloc-4096: Invalid object pointer 0xffff88007fb20010 > > ----------------------------------------------------------------------------- > > I'm told the serial one is already fixed. > > > I also noticed my network wasn't reachable. That's probably not related to the kernel > > but to check if my link is ok I run mii-tool and the result is NULL pointer dereference: > > > > BUG: unable to handle kernel NULL pointer dereference at 0000000000000138 > > IP: [<ffffffff8042beff>] dev_ifsioc+0x1f/0x320 > > PGD 736e3067 PUD 736ca067 PMD 0 > > Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC > > last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:05:01.0/resource > > CPU 1 > > Modules linked in: nfsd lockd sunrpc exportfs snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss usbhid gspca_zc3xx gspca_main compat_ioctl32 videodev v4l1_compat snd_mixer_oss usb_storage libusual ehci_hcd uhci_hcd usbcore parport_pc snd_hda_codec_realtek thermal parport snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer i2c_i801 snd soundcore snd_page_alloc sr_mod pcspkr sg i2c_core intel_agp processor rtc button cdrom > > Pid: 4768, comm: mii-tool Not tainted 2.6.28-rc7-next-20081204 #1 > > RIP: 0010:[<ffffffff8042beff>] [<ffffffff8042beff>] dev_ifsioc+0x1f/0x320 > > RSP: 0018:ffff88006e623da8 EFLAGS: 00010246 > > RAX: 0000000000000000 RBX: 0000000000008947 RCX: 00000000019369c2 > > RDX: 0000000000000610 RSI: ffff88006e623e0c RDI: 00000000ffffffff > > RBP: ffff88006e623e08 R08: 00000000019369c2 R09: 0000000000000001 > > R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 > > R13: 0000000000000000 R14: ffffffff80d7da40 R15: 00007fff55e4ee88 > > FS: 00007f944de2f6f0(0000) GS:ffff88007f8047d0(0000) knlGS:0000000000000000 > > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > CR2: 0000000000000138 CR3: 000000006e4d9000 CR4: 00000000000006e0 > > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > > Process mii-tool (pid: 4768, threadinfo ffff88006e622000, task ffff88006e45ba80) > > Stack: > > 0000000000008947 ffff88006e623e08 0000000000603400 ffffffff8042c4c7 > > ffffe2000003f428 0000000000603400 0000000001213025 ffffffff8028e3fd > > ffff88007d4f5500 00007f944db51330 ffff880076fbb180 0000000000000096 > > Call Trace: > > [<ffffffff8042c4c7>] ? dev_ioctl+0x2c7/0x590 > > [<ffffffff8028e3fd>] ? __do_fault+0x1dd/0x4a0 > > [<ffffffff8041de92>] ? sock_ioctl+0x72/0x250 > > [<ffffffff802b971f>] ? vfs_ioctl+0x2f/0xa0 > > [<ffffffff802b980d>] ? do_vfs_ioctl+0x7d/0x4c0 > > [<ffffffff80492d1d>] ? lockdep_sys_exit_thunk+0x35/0x67 > > [<ffffffff802b9c99>] ? sys_ioctl+0x49/0x80 > > [<ffffffff8020b95b>] ? system_call_fastpath+0x16/0x1b > > Code: f8 bd f1 ff e9 52 fe ff ff 0f 1f 00 48 83 ec 18 48 89 1c 24 89 d3 48 89 6c 24 08 4c 89 64 24 10 48 89 f5 e8 f4 d4 ff ff 49 89 c4 <48> 8b 88 38 01 00 00 8d 83 ec 76 ff ff 83 f8 5d 77 0f 89 c0 ff > > RIP [<ffffffff8042beff>] dev_ifsioc+0x1f/0x320 > > RSP <ffff88006e623da8> > > CR2: 0000000000000138 > > ---[ end trace 787e122ecd30f760 ]--- > > And this got bisected to: > > commit d314774cf2cd5dfeb39a00d37deee65d4c627927 > Author: Stephen Hemminger <shemminger-ZtmgI6mnKB3QT0dZR+AlfA@public.gmane.org> > Date: Wed Nov 19 21:32:24 2008 -0800 > > netdev: network device operations infrastructure > > This patch changes the network device internal API to move adminstrative > operations out of the network device structure and into a separate structure. > > This patch involves some hackery to maintain compatablity between the > new and old model, so all 300+ drivers don't have to be changed at once. > For drivers that aren't converted yet, the netdevice_ops virt function list > still resides in the net_device structure. For old protocols, the new > net_device_ops are copied out to the old net_device pointers. > > After the transistion is completed the nag message can be changed to > an WARN_ON, and the compatiablity code can be made configurable. > > Some function pointers aren't moved: > * destructor can't be in net_device_ops because > it may need to be referenced after the module is unloaded. > * neighbor setup is manipulated in a couple of places that need special > consideration > * hard_start_xmit is in the fast path for transmit. > > Signed-off-by: Stephen Hemminger <shemminger-ZtmgI6mnKB3QT0dZR+AlfA@public.gmane.org> > Signed-off-by: David S. Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org> > > > (gdb) l *dev_ifsioc+0x1f > 0xffffffff8042309f is in dev_ifsioc (/home/mako/linux/lkt/sources/linux-next/net/core/dev.c:3553). > 3548 * Perform the SIOCxIFxxx calls, inside rtnl_lock() > 3549 */ > 3550 static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd) > 3551 { > 3552 int err; > 3553 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); > 3554 > 3555 if (!dev) > 3556 return -ENODEV; > 3557 ^ permalink raw reply [flat|nested] 5+ messages in thread
[parent not found: <20081204200745.eff0ac87.sfr@canb.auug.org.au>]
[parent not found: <20081204200745.eff0ac87.sfr-3FnU+UHB4dNDw9hX6IcOSA@public.gmane.org>]
* Re: linux-next: Tree for December 4 [not found] ` <20081204200745.eff0ac87.sfr-3FnU+UHB4dNDw9hX6IcOSA@public.gmane.org> @ 2008-12-06 12:04 ` Mariusz Kozlowski [not found] ` <200812061304.12216.m.kozlowski-NWF1p15JEu3VItvQsEIGlw@public.gmane.org> 0 siblings, 1 reply; 5+ messages in thread From: Mariusz Kozlowski @ 2008-12-06 12:04 UTC (permalink / raw) To: Stephen Rothwell, kernel-testers-u79uwXL29TY76Z2rM5mHXA Cc: linux-next-u79uwXL29TY76Z2rM5mHXA, LKML [-- Attachment #1: Type: text/plain, Size: 50286 bytes --] Hello Stephen, I didn't run linux-next for some time. Today I gave it a shot and a few interesting things poped out: Linux agpgart interface v0.103 Serial: 8250/16550 driver4 ports, IRQ sharing enabled serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A ============================================================================= BUG kmalloc-4096: Invalid object pointer 0xffff88007fb20010 ----------------------------------------------------------------------------- INFO: Slab 0xffffe20001beef00 objects=7 used=1 fp=0xffff88007fb21048 flags=0x40000000000020c3 Pid: 1, comm: swapper Not tainted 2.6.28-rc7-next-20081204 #1 Call Trace: [<ffffffff802a4edd>] slab_err+0x9d/0xc0 [<ffffffff80218992>] save_stack_trace+0x22/0x40 [<ffffffff80260f57>] save_trace+0x37/0xa0 [<ffffffff80261027>] add_lock_to_list+0x67/0xf0 [<ffffffff80244c42>] __release_region+0x22/0xc0 [<ffffffff80264dac>] validate_chain+0xcdc/0x1200 [<ffffffff802a558b>] check_bytes_and_report+0x4b/0x100 [<ffffffff802a53f7>] slab_pad_check+0xe7/0x170 [<ffffffff803bf590>] uart_remove_one_port+0xf0/0x120 [<ffffffff802a6c28>] __slab_free+0x258/0x380 [<ffffffff803bf590>] uart_remove_one_port+0xf0/0x120 [<ffffffff802a6ee2>] kfree+0xb2/0x150 [<ffffffff803bf590>] uart_remove_one_port+0xf0/0x120 [<ffffffff803c4f18>] serial8250_register_port+0x88/0x1f0 [<ffffffff804851d0>] serial_pnp_probe+0x1a0/0x220 [<ffffffff8039bfef>] match_device+0x2f/0x50 [<ffffffff8039c0a4>] pnp_device_probe+0x64/0xe0 [<ffffffff803ca4d6>] driver_probe_device+0x96/0x1b0 [<ffffffff803ca68c>] __driver_attach+0x9c/0xa0 [<ffffffff803ca5f0>] __driver_attach+0x0/0xa0 [<ffffffff803c98f3>] bus_for_each_dev+0x53/0x80 [<ffffffff803ca08b>] bus_add_driver+0x1cb/0x230 [<ffffffff803ca855>] driver_register+0x55/0x140 [<ffffffff8062e200>] serial8250_pnp_init+0x0/0x10 [<ffffffff8020903b>] _stext+0x3b/0x170 [<ffffffff8027b181>] register_irq_proc+0xc1/0xe0 [<ffffffff806119ad>] kernel_init+0x15d/0x1f0 [<ffffffff8020c9fa>] child_rip+0xa/0x20 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff80611850>] kernel_init+0x0/0x1f0 [<ffffffff8020c9f0>] child_rip+0x0/0x20 FIX kmalloc-4096: Object at 0xffff88007fb20010 not freed 00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A ============================================================================= BUG kmalloc-4096: Invalid object pointer 0xffff88007fb20278 ----------------------------------------------------------------------------- INFO: Slab 0xffffe20001beef00 objects=7 used=1 fp=0xffff88007fb21048 flags=0x40000000000020c3 Pid: 1, comm: swapper Not tainted 2.6.28-rc7-next-20081204 #1 Call Trace: [<ffffffff802a4edd>] slab_err+0x9d/0xc0 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff802a558b>] check_bytes_and_report+0x4b/0x100 [<ffffffff802a53f7>] slab_pad_check+0xe7/0x170 [<ffffffff803bf590>] uart_remove_one_port+0xf0/0x120 [<ffffffff802a6c28>] __slab_free+0x258/0x380 [<ffffffff803bf590>] uart_remove_one_port+0xf0/0x120 [<ffffffff802a6ee2>] kfree+0xb2/0x150 [<ffffffff803bf590>] uart_remove_one_port+0xf0/0x120 [<ffffffff803c4f18>] serial8250_register_port+0x88/0x1f0 [<ffffffff804851d0>] serial_pnp_probe+0x1a0/0x220 [<ffffffff8039bfef>] match_device+0x2f/0x50 [<ffffffff8039c0a4>] pnp_device_probe+0x64/0xe0 [<ffffffff803ca4d6>] driver_probe_device+0x96/0x1b0 [<ffffffff803ca68c>] __driver_attach+0x9c/0xa0 [<ffffffff803ca5f0>] __driver_attach+0x0/0xa0 [<ffffffff803c98f3>] bus_for_each_dev+0x53/0x80 [<ffffffff803ca08b>] bus_add_driver+0x1cb/0x230 [<ffffffff803ca855>] driver_register+0x55/0x140 [<ffffffff8062e200>] serial8250_pnp_init+0x0/0x10 [<ffffffff8020903b>] _stext+0x3b/0x170 [<ffffffff8027b181>] register_irq_proc+0xc1/0xe0 [<ffffffff806119ad>] kernel_init+0x15d/0x1f0 [<ffffffff8020c9fa>] child_rip+0xa/0x20 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff80611850>] kernel_init+0x0/0x1f0 [<ffffffff8020c9f0>] child_rip+0x0/0x20 FIX kmalloc-4096: Object at 0xffff88007fb20278 not freed 00:07: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A I also noticed my network wasn't reachable. That's probably not related to the kernel but to check if my link is ok I run mii-tool and the result is NULL pointer dereference: BUG: unable to handle kernel NULL pointer dereference at 0000000000000138 IP: [<ffffffff8042beff>] dev_ifsioc+0x1f/0x320 PGD 736e3067 PUD 736ca067 PMD 0 Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:05:01.0/resource CPU 1 Modules linked in: nfsd lockd sunrpc exportfs snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss usbhid gspca_zc3xx gspca_main compat_ioctl32 videodev v4l1_compat snd_mixer_oss usb_storage libusual ehci_hcd uhci_hcd usbcore parport_pc snd_hda_codec_realtek thermal parport snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer i2c_i801 snd soundcore snd_page_alloc sr_mod pcspkr sg i2c_core intel_agp processor rtc button cdrom Pid: 4768, comm: mii-tool Not tainted 2.6.28-rc7-next-20081204 #1 RIP: 0010:[<ffffffff8042beff>] [<ffffffff8042beff>] dev_ifsioc+0x1f/0x320 RSP: 0018:ffff88006e623da8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000008947 RCX: 00000000019369c2 RDX: 0000000000000610 RSI: ffff88006e623e0c RDI: 00000000ffffffff RBP: ffff88006e623e08 R08: 00000000019369c2 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff80d7da40 R15: 00007fff55e4ee88 FS: 00007f944de2f6f0(0000) GS:ffff88007f8047d0(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000138 CR3: 000000006e4d9000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process mii-tool (pid: 4768, threadinfo ffff88006e622000, task ffff88006e45ba80) Stack: 0000000000008947 ffff88006e623e08 0000000000603400 ffffffff8042c4c7 ffffe2000003f428 0000000000603400 0000000001213025 ffffffff8028e3fd ffff88007d4f5500 00007f944db51330 ffff880076fbb180 0000000000000096 Call Trace: [<ffffffff8042c4c7>] ? dev_ioctl+0x2c7/0x590 [<ffffffff8028e3fd>] ? __do_fault+0x1dd/0x4a0 [<ffffffff8041de92>] ? sock_ioctl+0x72/0x250 [<ffffffff802b971f>] ? vfs_ioctl+0x2f/0xa0 [<ffffffff802b980d>] ? do_vfs_ioctl+0x7d/0x4c0 [<ffffffff80492d1d>] ? lockdep_sys_exit_thunk+0x35/0x67 [<ffffffff802b9c99>] ? sys_ioctl+0x49/0x80 [<ffffffff8020b95b>] ? system_call_fastpath+0x16/0x1b Code: f8 bd f1 ff e9 52 fe ff ff 0f 1f 00 48 83 ec 18 48 89 1c 24 89 d3 48 89 6c 24 08 4c 89 64 24 10 48 89 f5 e8 f4 d4 ff ff 49 89 c4 <48> 8b 88 38 01 00 00 8d 83 ec 76 ff ff 83 f8 5d 77 0f 89 c0 ff RIP [<ffffffff8042beff>] dev_ifsioc+0x1f/0x320 RSP <ffff88006e623da8> CR2: 0000000000000138 ---[ end trace 787e122ecd30f760 ]--- Full dmesg and .config is attached. Mariusz Right before this there was also a rather long lockdep info triggered by starting skype: ====================================================== [ INFO: soft-safe -> soft-unsafe lock order detected ] 2.6.28-rc7-next-20081204 #1 ------------------------------------------------------ skype/4695 [HC0[0]:SC0[1]:HE1:SE0] is trying to acquire: (&fbc->lock){--..}, at: [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 and this task is already holding: (slock-AF_INET){-+..}, at: [<ffffffff80453496>] tcp_close+0x166/0x4a0 which would create a new lock dependency: (slock-AF_INET){-+..} -> (&fbc->lock){--..} but this new dependency connects a soft-irq-safe lock: (slock-AF_INET){-+..} ... which became soft-irq-safe at: [<ffffffffffffffff>] 0xffffffffffffffff to a soft-irq-unsafe lock: (&fbc->lock){--..} ... which became soft-irq-unsafe at: ... [<ffffffff80265afd>] __lock_acquire+0x82d/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff802a6e21>] kmem_cache_alloc+0xd1/0xe0 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff802ad058>] get_empty_filp+0x68/0x140 [<ffffffff802b7e7b>] path_lookup_open+0x3b/0xd0 [<ffffffff802b07d4>] open_exec+0x24/0xd0 [<ffffffff802ac4fa>] vfs_read+0x12a/0x160 [<ffffffff802b0688>] kernel_read+0x38/0x50 [<ffffffff802ea559>] load_elf_binary+0x18b9/0x1d20 [<ffffffff8027f74f>] generic_file_aio_read+0x4ff/0x5e0 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff802ec040>] load_elf_binary+0x0/0x1e70 [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 [<ffffffff802e7640>] load_script+0x270/0x280 [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 [<ffffffff802e73d0>] load_script+0x0/0x280 [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 [<ffffffff802b18de>] do_execve+0x22e/0x290 [<ffffffff80209b49>] sys_execve+0x49/0x80 [<ffffffff8020bdfa>] stub_execve+0x6a/0xc0 [<ffffffffffffffff>] 0xffffffffffffffff other info that might help us debug this: 1 lock held by skype/4695: #0: (slock-AF_INET){-+..}, at: [<ffffffff80453496>] tcp_close+0x166/0x4a0 the soft-irq-safe lock's dependencies: -> (slock-AF_INET){-+..} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 [<ffffffff80493108>] _spin_lock_bh+0x38/0x50 [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff804681bb>] udp_destroy_sock+0xb/0x20 [<ffffffff8041f558>] sk_common_release+0x18/0x80 [<ffffffff8046f7fe>] inet_release+0x3e/0x70 [<ffffffff8041c9f9>] sock_release+0x19/0xb0 [<ffffffff8041cfe2>] sock_close+0x12/0x40 [<ffffffff802ace0b>] __fput+0xbb/0x200 [<ffffffff802a9cc4>] filp_close+0x54/0x90 [<ffffffff802a9d9f>] sys_close+0x9f/0x110 [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff hardirq-on-W at: [<ffffffff80265ad5>] __lock_acquire+0x805/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 [<ffffffff80493108>] _spin_lock_bh+0x38/0x50 [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 [<ffffffff8041ed1e>] lock_sock_nested+0x1e/0x110 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff804681bb>] udp_destroy_sock+0xb/0x20 [<ffffffff8041f558>] sk_common_release+0x18/0x80 [<ffffffff8046f7fe>] inet_release+0x3e/0x70 [<ffffffff8041c9f9>] sock_release+0x19/0xb0 [<ffffffff8041cfe2>] sock_close+0x12/0x40 [<ffffffff802ace0b>] __fput+0xbb/0x200 [<ffffffff802a9cc4>] filp_close+0x54/0x90 [<ffffffff802a9d9f>] sys_close+0x9f/0x110 [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff80d7d650>] af_family_slock_keys+0x10/0x120 -> (&rt_hash_locks[i]){-+..} ops: 0 { initial-use at: [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff hardirq-on-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff80d7e714>] __key.40927+0x0/0x8 -> (&zone->lock){.+..} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff802825e6>] free_pages_bulk+0x36/0x300 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff802825e6>] free_pages_bulk+0x36/0x300 [<ffffffff802825e6>] free_pages_bulk+0x36/0x300 [<ffffffff802831d2>] free_hot_cold_page+0x262/0x2f0 [<ffffffff80624c88>] free_all_bootmem_core+0xd8/0x240 [<ffffffff80496d0d>] _etext+0x0/0x3 [<ffffffff8062085c>] mem_init+0x3c/0x190 [<ffffffff80611cff>] start_kernel+0x28f/0x440 [<ffffffff8061136a>] x86_64_start_kernel+0xca/0xe0 [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff80d6ded0>] __key.29131+0x0/0x8 ... acquired at: [<ffffffff802838a5>] get_page_from_freelist+0x525/0x5b0 [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff802838a5>] get_page_from_freelist+0x525/0x5b0 [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 [<ffffffff802838a5>] get_page_from_freelist+0x525/0x5b0 [<ffffffff802838a5>] get_page_from_freelist+0x525/0x5b0 [<ffffffff80283bfa>] __alloc_pages_internal+0xaa/0x450 [<ffffffff802a64da>] __slab_alloc+0x17a/0x670 [<ffffffff80431e54>] neigh_create+0x74/0x5b0 [<ffffffff80431e54>] neigh_create+0x74/0x5b0 [<ffffffff802a6e0f>] kmem_cache_alloc+0xbf/0xe0 [<ffffffff80431e54>] neigh_create+0x74/0x5b0 [<ffffffff80263821>] trace_hardirqs_on_caller+0x71/0x180 [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 [<ffffffff8043135a>] neigh_lookup+0x10a/0x140 [<ffffffff80469911>] arp_bind_neighbour+0xa1/0xb0 [<ffffffff80441e98>] rt_intern_hash+0x208/0x4f0 [<ffffffff8027c2fd>] __rcu_read_unlock+0xcd/0xe0 [<ffffffff80442593>] __ip_route_output_key+0x413/0xa60 [<ffffffff804650a7>] ip4_datagram_connect+0x177/0x2a0 [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 [<ffffffff8041bd76>] sys_connect+0x86/0xe0 [<ffffffff8020c3ad>] retint_swapgs+0xe/0x13 [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 [<ffffffff80492ca7>] trace_hardirqs_on_thunk+0x3a/0x3f [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff ... acquired at: [<ffffffffffffffff>] 0xffffffffffffffff -> (rt_peer_lock){-+..} ops: 0 { initial-use at: [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff hardirq-on-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff805ea3b8>] rt_peer_lock.41771+0x18/0x40 ... acquired at: [<ffffffffffffffff>] 0xffffffffffffffff -> (inet_peer_idlock){-+..} ops: 0 { initial-use at: [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff hardirq-on-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff805ea958>] inet_peer_idlock+0x18/0x40 ... acquired at: [<ffffffffffffffff>] 0xffffffffffffffff -> (&n->lock){-+-+} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 [<ffffffff80493198>] _write_lock_bh+0x38/0x50 [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 [<ffffffff804335b7>] neigh_resolve_output+0x147/0x2d0 [<ffffffff8044a51d>] ip_generic_getfrag+0x4d/0x90 [<ffffffff8044896c>] ip_push_pending_frames+0x27c/0x400 [<ffffffff80467153>] udp_push_pending_frames+0x233/0x3c0 [<ffffffff80468531>] udp_sendmsg+0x361/0x730 [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 [<ffffffff8043135a>] neigh_lookup+0x10a/0x140 [<ffffffff8041c3fb>] sock_sendmsg+0xcb/0x100 [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80254370>] autoremove_wake_function+0x0/0x30 [<ffffffff8028e3fd>] __do_fault+0x1dd/0x4a0 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff8041bac1>] sockfd_lookup_light+0x41/0x80 [<ffffffff8041c8a9>] sys_sendto+0x119/0x180 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80468e40>] udp_poll+0x0/0x120 [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff hardirq-on-W at: [<ffffffff80265ad5>] __lock_acquire+0x805/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 [<ffffffff80493198>] _write_lock_bh+0x38/0x50 [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 [<ffffffff80430c0a>] __neigh_event_send+0x2a/0x200 [<ffffffff804335b7>] neigh_resolve_output+0x147/0x2d0 [<ffffffff8044a51d>] ip_generic_getfrag+0x4d/0x90 [<ffffffff8044896c>] ip_push_pending_frames+0x27c/0x400 [<ffffffff80467153>] udp_push_pending_frames+0x233/0x3c0 [<ffffffff80468531>] udp_sendmsg+0x361/0x730 [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 [<ffffffff8043135a>] neigh_lookup+0x10a/0x140 [<ffffffff8041c3fb>] sock_sendmsg+0xcb/0x100 [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80254370>] autoremove_wake_function+0x0/0x30 [<ffffffff8028e3fd>] __do_fault+0x1dd/0x4a0 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff8041bac1>] sockfd_lookup_light+0x41/0x80 [<ffffffff8041c8a9>] sys_sendto+0x119/0x180 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80468e40>] udp_poll+0x0/0x120 [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-R at: [<ffffffffffffffff>] 0xffffffffffffffff hardirq-on-R at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff80d7e3a4>] __key.31965+0x0/0xc -> (&base->lock){++..} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80248c44>] lock_timer_base+0x34/0x70 [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 [<ffffffff80248c44>] lock_timer_base+0x34/0x70 [<ffffffff80248c44>] lock_timer_base+0x34/0x70 [<ffffffff80493735>] _spin_unlock_irqrestore+0x65/0x80 [<ffffffff80248d3a>] __mod_timer+0x2a/0xe0 [<ffffffff80493710>] _spin_unlock_irqrestore+0x40/0x80 [<ffffffff8062da24>] con_init+0x274/0x2a0 [<ffffffff8062d00a>] console_init+0x1a/0x30 [<ffffffff80611cd5>] start_kernel+0x265/0x440 [<ffffffff8061136a>] x86_64_start_kernel+0xca/0xe0 [<ffffffffffffffff>] 0xffffffffffffffff in-hardirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff8077f918>] __key.21559+0x0/0x8 ... acquired at: [<ffffffff80248c44>] lock_timer_base+0x34/0x70 [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80248c44>] lock_timer_base+0x34/0x70 [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 [<ffffffff80248c44>] lock_timer_base+0x34/0x70 [<ffffffff80248c44>] lock_timer_base+0x34/0x70 [<ffffffff80248d3a>] __mod_timer+0x2a/0xe0 [<ffffffff80430bb7>] neigh_add_timer+0x17/0x40 [<ffffffff80430cb3>] __neigh_event_send+0xd3/0x200 [<ffffffff804335b7>] neigh_resolve_output+0x147/0x2d0 [<ffffffff8044a51d>] ip_generic_getfrag+0x4d/0x90 [<ffffffff8044896c>] ip_push_pending_frames+0x27c/0x400 [<ffffffff80467153>] udp_push_pending_frames+0x233/0x3c0 [<ffffffff80468531>] udp_sendmsg+0x361/0x730 [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 [<ffffffff80243561>] local_bh_enable_ip+0x81/0xf0 [<ffffffff8043135a>] neigh_lookup+0x10a/0x140 [<ffffffff8041c3fb>] sock_sendmsg+0xcb/0x100 [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80254370>] autoremove_wake_function+0x0/0x30 [<ffffffff8028e3fd>] __do_fault+0x1dd/0x4a0 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff8041bac1>] sockfd_lookup_light+0x41/0x80 [<ffffffff8041c8a9>] sys_sendto+0x119/0x180 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80468e40>] udp_poll+0x0/0x120 [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff -> (&list->lock#3){.+..} ops: 0 { initial-use at: [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff80d7e394>] __key.17594+0x0/0x8 ... acquired at: [<ffffffffffffffff>] 0xffffffffffffffff ... acquired at: [<ffffffffffffffff>] 0xffffffffffffffff -> (&list->lock){-+..} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80422d84>] skb_queue_tail+0x24/0x60 [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 [<ffffffff80422d84>] skb_queue_tail+0x24/0x60 [<ffffffff80422d84>] skb_queue_tail+0x24/0x60 [<ffffffff8043d0ed>] netlink_broadcast+0x2cd/0x3c0 [<ffffffff803449b6>] kobject_uevent_env+0x336/0x3f0 [<ffffffff80344adf>] kobject_action_type+0x5f/0xb0 [<ffffffff803c9139>] bus_uevent_store+0x39/0x50 [<ffffffff80300aec>] sysfs_write_file+0xcc/0x150 [<ffffffff802ac328>] vfs_write+0xc8/0x170 [<ffffffff802ac903>] sys_write+0x53/0x90 [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff hardirq-on-W at: [<ffffffff80265ad5>] __lock_acquire+0x805/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80468e94>] udp_poll+0x54/0x120 [<ffffffff80493108>] _spin_lock_bh+0x38/0x50 [<ffffffff80468e94>] udp_poll+0x54/0x120 [<ffffffff80468e94>] udp_poll+0x54/0x120 [<ffffffff802bab22>] do_sys_poll+0x1e2/0x3d0 [<ffffffff802bb9f0>] __pollwait+0x0/0x130 [<ffffffff80234f50>] default_wake_function+0x0/0x10 [<ffffffff80234f50>] default_wake_function+0x0/0x10 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff802636b2>] mark_held_locks+0x42/0x90 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff8027c2fd>] __rcu_read_unlock+0xcd/0xe0 [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff8028e3fd>] __do_fault+0x1dd/0x4a0 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff8020c3ad>] retint_swapgs+0xe/0x13 [<ffffffff802bad83>] sys_poll+0x73/0xf0 [<ffffffff8020b95b>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff80d7d4d4>] __key.24456+0x0/0x8 ... acquired at: [<ffffffffffffffff>] 0xffffffffffffffff -> (&q->lock){++..} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff8048ffc7>] wait_for_common+0x37/0x190 [<ffffffff804932d9>] _spin_lock_irq+0x39/0x50 [<ffffffff8048ffc7>] wait_for_common+0x37/0x190 [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 [<ffffffff8048ffc7>] wait_for_common+0x37/0x190 [<ffffffff80493710>] _spin_unlock_irqrestore+0x40/0x80 [<ffffffff80234e67>] try_to_wake_up+0x107/0x1f0 [<ffffffff802541ea>] kthread_create+0x9a/0x110 [<ffffffff802389b0>] migration_thread+0x0/0x290 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff8021273f>] init_pit_timer+0x1f/0xc0 [<ffffffff802636b2>] mark_held_locks+0x42/0x90 [<ffffffff80493735>] _spin_unlock_irqrestore+0x65/0x80 [<ffffffff80621a90>] migration_init+0x0/0x60 [<ffffffff8048e204>] migration_call+0x244/0x580 [<ffffffff80493710>] _spin_unlock_irqrestore+0x40/0x80 [<ffffffff80621a90>] migration_init+0x0/0x60 [<ffffffff80621ab1>] migration_init+0x21/0x60 [<ffffffff80621a90>] migration_init+0x0/0x60 [<ffffffff8020903b>] _stext+0x3b/0x170 [<ffffffff80493609>] _spin_unlock+0x29/0x50 [<ffffffff80223930>] get_apic_id+0x0/0x10 [<ffffffff8061aaab>] native_smp_prepare_cpus+0x1ab/0x460 [<ffffffff806118c0>] kernel_init+0x70/0x1f0 [<ffffffff8020c9fa>] child_rip+0xa/0x20 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff80611850>] kernel_init+0x0/0x1f0 [<ffffffff8020c9f0>] child_rip+0x0/0x20 [<ffffffffffffffff>] 0xffffffffffffffff in-hardirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff80780058>] __key.16756+0x0/0x8 -> (&rq->lock){++..} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80234b93>] rq_attach_root+0x23/0xe0 [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 [<ffffffff80234b93>] rq_attach_root+0x23/0xe0 [<ffffffff80234b93>] rq_attach_root+0x23/0xe0 [<ffffffff80622035>] sched_init+0x375/0x510 [<ffffffff80611c04>] start_kernel+0x194/0x440 [<ffffffff8061136a>] x86_64_start_kernel+0xca/0xe0 [<ffffffffffffffff>] 0xffffffffffffffff in-hardirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff8067b0d8>] __key.42751+0x0/0x8 -> (&vec->lock){.+..} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 [<ffffffff802302b1>] set_rq_online+0x51/0x70 [<ffffffff80234b93>] rq_attach_root+0x23/0xe0 [<ffffffff80234bfd>] rq_attach_root+0x8d/0xe0 [<ffffffff80622035>] sched_init+0x375/0x510 [<ffffffff80611c04>] start_kernel+0x194/0x440 [<ffffffff8061136a>] x86_64_start_kernel+0xca/0xe0 [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff80d6de50>] __key.13804+0x0/0x8 ... acquired at: [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 [<ffffffff80260f57>] save_trace+0x37/0xa0 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 [<ffffffff8027ceac>] cpupri_set+0x8c/0xe0 [<ffffffff802302b1>] set_rq_online+0x51/0x70 [<ffffffff80234b93>] rq_attach_root+0x23/0xe0 [<ffffffff80234bfd>] rq_attach_root+0x8d/0xe0 [<ffffffff80622035>] sched_init+0x375/0x510 [<ffffffff80611c04>] start_kernel+0x194/0x440 [<ffffffff8061136a>] x86_64_start_kernel+0xca/0xe0 [<ffffffffffffffff>] 0xffffffffffffffff -> (&rt_b->rt_runtime_lock){.+..} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 [<ffffffff80233aeb>] enqueue_task_rt+0x3b/0x80 [<ffffffff8022f1ab>] enqueue_task+0xb/0x20 [<ffffffff8022f23a>] activate_task+0x1a/0x30 [<ffffffff80234f3d>] try_to_wake_up+0x1dd/0x1f0 [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 [<ffffffff8048e024>] migration_call+0x64/0x580 [<ffffffff80621ace>] migration_init+0x3e/0x60 [<ffffffff80621a90>] migration_init+0x0/0x60 [<ffffffff8020903b>] _stext+0x3b/0x170 [<ffffffff80493609>] _spin_unlock+0x29/0x50 [<ffffffff80223930>] get_apic_id+0x0/0x10 [<ffffffff8061aaab>] native_smp_prepare_cpus+0x1ab/0x460 [<ffffffff806118c0>] kernel_init+0x70/0x1f0 [<ffffffff8020c9fa>] child_rip+0xa/0x20 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff80611850>] kernel_init+0x0/0x1f0 [<ffffffff8020c9f0>] child_rip+0x0/0x20 [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff8067b0e0>] __key.34599+0x0/0x8 -> (&cpu_base->lock){++..} ops: 0 { initial-use at: [<ffffffffffffffff>] 0xffffffffffffffff in-hardirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff80780094>] __key.18863+0x0/0x8 ... acquired at: [<ffffffff80257589>] lock_hrtimer_base+0x29/0x60 [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80257589>] lock_hrtimer_base+0x29/0x60 [<ffffffff8049337e>] _spin_lock_irqsave+0x3e/0x60 [<ffffffff80257589>] lock_hrtimer_base+0x29/0x60 [<ffffffff80257589>] lock_hrtimer_base+0x29/0x60 [<ffffffff80257722>] hrtimer_start_range_ns+0x42/0x200 [<ffffffff80257af5>] ktime_get_ts+0x25/0x60 [<ffffffff80233a55>] __enqueue_rt_entity+0x125/0x180 [<ffffffff80233aeb>] enqueue_task_rt+0x3b/0x80 [<ffffffff8022f1ab>] enqueue_task+0xb/0x20 [<ffffffff8022f23a>] activate_task+0x1a/0x30 [<ffffffff80234f3d>] try_to_wake_up+0x1dd/0x1f0 [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 [<ffffffff8048e024>] migration_call+0x64/0x580 [<ffffffff80621ace>] migration_init+0x3e/0x60 [<ffffffff80621a90>] migration_init+0x0/0x60 [<ffffffff8020903b>] _stext+0x3b/0x170 [<ffffffff80493609>] _spin_unlock+0x29/0x50 [<ffffffff80223930>] get_apic_id+0x0/0x10 [<ffffffff8061aaab>] native_smp_prepare_cpus+0x1ab/0x460 [<ffffffff806118c0>] kernel_init+0x70/0x1f0 [<ffffffff8020c9fa>] child_rip+0xa/0x20 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff80611850>] kernel_init+0x0/0x1f0 [<ffffffff8020c9f0>] child_rip+0x0/0x20 [<ffffffffffffffff>] 0xffffffffffffffff -> (&rt_rq->rt_runtime_lock){+...} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80237e50>] update_curr_rt+0x110/0x190 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff80237e50>] update_curr_rt+0x110/0x190 [<ffffffff80237e50>] update_curr_rt+0x110/0x190 [<ffffffff80237fe9>] dequeue_task_rt+0x19/0x50 [<ffffffff8022f20f>] dequeue_task+0x4f/0x60 [<ffffffff8022f26a>] deactivate_task+0x1a/0x20 [<ffffffff80490507>] thread_return+0xe3/0x59c [<ffffffff802389b0>] migration_thread+0x0/0x290 [<ffffffff80493774>] _spin_unlock_irq+0x24/0x50 [<ffffffff802389b0>] migration_thread+0x0/0x290 [<ffffffff802389b0>] migration_thread+0x0/0x290 [<ffffffff80238b2f>] migration_thread+0x17f/0x290 [<ffffffff802389b0>] migration_thread+0x0/0x290 [<ffffffff80253f6b>] kthread+0x4b/0x80 [<ffffffff8020c9fa>] child_rip+0xa/0x20 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff80253f20>] kthread+0x0/0x80 [<ffffffff8020c9f0>] child_rip+0x0/0x20 [<ffffffffffffffff>] 0xffffffffffffffff in-hardirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff8067b0e8>] __key.42703+0x0/0x8 ... acquired at: [<ffffffff802321c2>] __enable_runtime+0x42/0xa0 [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff802321c2>] __enable_runtime+0x42/0xa0 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff802321c2>] __enable_runtime+0x42/0xa0 [<ffffffff802321c2>] __enable_runtime+0x42/0xa0 [<ffffffff802336e4>] rq_online_rt+0x24/0x70 [<ffffffff802302b1>] set_rq_online+0x51/0x70 [<ffffffff8048e03d>] migration_call+0x7d/0x580 [<ffffffff8048e065>] migration_call+0xa5/0x580 [<ffffffff80258c71>] notifier_call_chain+0x51/0x70 [<ffffffff8048e836>] _cpu_up+0xe6/0x140 [<ffffffff8048e8e9>] cpu_up+0x59/0x80 [<ffffffff80611944>] kernel_init+0xf4/0x1f0 [<ffffffff8020c9fa>] child_rip+0xa/0x20 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff80611850>] kernel_init+0x0/0x1f0 [<ffffffff8020c9f0>] child_rip+0x0/0x20 [<ffffffffffffffff>] 0xffffffffffffffff ... acquired at: [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 [<ffffffff80260f57>] save_trace+0x37/0xa0 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 [<ffffffff80233a0c>] __enqueue_rt_entity+0xdc/0x180 [<ffffffff80233aeb>] enqueue_task_rt+0x3b/0x80 [<ffffffff8022f1ab>] enqueue_task+0xb/0x20 [<ffffffff8022f23a>] activate_task+0x1a/0x30 [<ffffffff80234f3d>] try_to_wake_up+0x1dd/0x1f0 [<ffffffff802638ce>] trace_hardirqs_on_caller+0x11e/0x180 [<ffffffff8048e024>] migration_call+0x64/0x580 [<ffffffff80621ace>] migration_init+0x3e/0x60 [<ffffffff80621a90>] migration_init+0x0/0x60 [<ffffffff8020903b>] _stext+0x3b/0x170 [<ffffffff80493609>] _spin_unlock+0x29/0x50 [<ffffffff80223930>] get_apic_id+0x0/0x10 [<ffffffff8061aaab>] native_smp_prepare_cpus+0x1ab/0x460 [<ffffffff806118c0>] kernel_init+0x70/0x1f0 [<ffffffff8020c9fa>] child_rip+0xa/0x20 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff80611850>] kernel_init+0x0/0x1f0 [<ffffffff8020c9f0>] child_rip+0x0/0x20 [<ffffffffffffffff>] 0xffffffffffffffff ... acquired at: [<ffffffff80237e50>] update_curr_rt+0x110/0x190 [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 [<ffffffff80260f57>] save_trace+0x37/0xa0 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff80237e50>] update_curr_rt+0x110/0x190 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff80237e50>] update_curr_rt+0x110/0x190 [<ffffffff80237e50>] update_curr_rt+0x110/0x190 [<ffffffff80237fe9>] dequeue_task_rt+0x19/0x50 [<ffffffff8022f20f>] dequeue_task+0x4f/0x60 [<ffffffff8022f26a>] deactivate_task+0x1a/0x20 [<ffffffff80490507>] thread_return+0xe3/0x59c [<ffffffff802389b0>] migration_thread+0x0/0x290 [<ffffffff80493774>] _spin_unlock_irq+0x24/0x50 [<ffffffff802389b0>] migration_thread+0x0/0x290 [<ffffffff802389b0>] migration_thread+0x0/0x290 [<ffffffff80238b2f>] migration_thread+0x17f/0x290 [<ffffffff802389b0>] migration_thread+0x0/0x290 [<ffffffff80253f6b>] kthread+0x4b/0x80 [<ffffffff8020c9fa>] child_rip+0xa/0x20 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff80253f20>] kthread+0x0/0x80 [<ffffffff8020c9f0>] child_rip+0x0/0x20 [<ffffffffffffffff>] 0xffffffffffffffff -> (&rq->lock/1){.+..} ops: 0 { initial-use at: [<ffffffffffffffff>] 0xffffffffffffffff in-softirq-W at: [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff8067b0d9>] __key.42751+0x1/0x8 ... acquired at: [<ffffffffffffffff>] 0xffffffffffffffff ... acquired at: [<ffffffff802308a3>] task_rq_lock+0x53/0xa0 [<ffffffff80264cd5>] validate_chain+0xc05/0x1200 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff802308a3>] task_rq_lock+0x53/0xa0 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff802308a3>] task_rq_lock+0x53/0xa0 [<ffffffff802308a3>] task_rq_lock+0x53/0xa0 [<ffffffff80234df3>] try_to_wake_up+0x93/0x1f0 [<ffffffff8022f58b>] __wake_up_common+0x5b/0x90 [<ffffffff8023066d>] complete+0x3d/0x60 [<ffffffff802540b9>] kthreadd+0x119/0x1b0 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff8020c9fa>] child_rip+0xa/0x20 [<ffffffff8020c3c0>] restore_args+0x0/0x30 [<ffffffff80253fa0>] kthreadd+0x0/0x1b0 [<ffffffff8020c9f0>] child_rip+0x0/0x20 [<ffffffffffffffff>] 0xffffffffffffffff ... acquired at: [<ffffffffffffffff>] 0xffffffffffffffff the soft-irq-unsafe lock's dependencies: -> (&fbc->lock){--..} ops: 0 { initial-use at: [<ffffffff8026548d>] __lock_acquire+0x1bd/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff802a6e21>] kmem_cache_alloc+0xd1/0xe0 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff802ad058>] get_empty_filp+0x68/0x140 [<ffffffff802b7e7b>] path_lookup_open+0x3b/0xd0 [<ffffffff802b07d4>] open_exec+0x24/0xd0 [<ffffffff802ac4fa>] vfs_read+0x12a/0x160 [<ffffffff802b0688>] kernel_read+0x38/0x50 [<ffffffff802ea559>] load_elf_binary+0x18b9/0x1d20 [<ffffffff8027f74f>] generic_file_aio_read+0x4ff/0x5e0 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff802ec040>] load_elf_binary+0x0/0x1e70 [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 [<ffffffff802e7640>] load_script+0x270/0x280 [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 [<ffffffff802e73d0>] load_script+0x0/0x280 [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 [<ffffffff802b18de>] do_execve+0x22e/0x290 [<ffffffff80209b49>] sys_execve+0x49/0x80 [<ffffffff8020bdfa>] stub_execve+0x6a/0xc0 [<ffffffffffffffff>] 0xffffffffffffffff softirq-on-W at: [<ffffffff80265afd>] __lock_acquire+0x82d/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff802a6e21>] kmem_cache_alloc+0xd1/0xe0 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff802ad058>] get_empty_filp+0x68/0x140 [<ffffffff802b7e7b>] path_lookup_open+0x3b/0xd0 [<ffffffff802b07d4>] open_exec+0x24/0xd0 [<ffffffff802ac4fa>] vfs_read+0x12a/0x160 [<ffffffff802b0688>] kernel_read+0x38/0x50 [<ffffffff802ea559>] load_elf_binary+0x18b9/0x1d20 [<ffffffff8027f74f>] generic_file_aio_read+0x4ff/0x5e0 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff802ec040>] load_elf_binary+0x0/0x1e70 [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 [<ffffffff802e7640>] load_script+0x270/0x280 [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 [<ffffffff802e73d0>] load_script+0x0/0x280 [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 [<ffffffff802b18de>] do_execve+0x22e/0x290 [<ffffffff80209b49>] sys_execve+0x49/0x80 [<ffffffff8020bdfa>] stub_execve+0x6a/0xc0 [<ffffffffffffffff>] 0xffffffffffffffff hardirq-on-W at: [<ffffffff80265ad5>] __lock_acquire+0x805/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff802a6e21>] kmem_cache_alloc+0xd1/0xe0 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff802ad058>] get_empty_filp+0x68/0x140 [<ffffffff802b7e7b>] path_lookup_open+0x3b/0xd0 [<ffffffff802b07d4>] open_exec+0x24/0xd0 [<ffffffff802ac4fa>] vfs_read+0x12a/0x160 [<ffffffff802b0688>] kernel_read+0x38/0x50 [<ffffffff802ea559>] load_elf_binary+0x18b9/0x1d20 [<ffffffff8027f74f>] generic_file_aio_read+0x4ff/0x5e0 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80264530>] validate_chain+0x460/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff802ec040>] load_elf_binary+0x0/0x1e70 [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 [<ffffffff802e7640>] load_script+0x270/0x280 [<ffffffff802e8ca0>] load_elf_binary+0x0/0x1d20 [<ffffffff802e73d0>] load_script+0x0/0x280 [<ffffffff802b0360>] search_binary_handler+0xd0/0x2e0 [<ffffffff802b18de>] do_execve+0x22e/0x290 [<ffffffff80209b49>] sys_execve+0x49/0x80 [<ffffffff8020bdfa>] stub_execve+0x6a/0xc0 [<ffffffffffffffff>] 0xffffffffffffffff } ... key at: [<ffffffff80d736d4>] __key.10917+0x0/0x8 stack backtrace: Pid: 4695, comm: skype Not tainted 2.6.28-rc7-next-20081204 #1 Call Trace: [<ffffffff80263ed2>] check_usage+0x362/0x480 [<ffffffff802649a0>] validate_chain+0x8d0/0x1200 [<ffffffff80265717>] __lock_acquire+0x447/0xa50 [<ffffffff80265d73>] lock_acquire+0x53/0x70 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff804930c3>] _spin_lock+0x33/0x40 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff8035adce>] __percpu_counter_add+0x5e/0xd0 [<ffffffff8044ee36>] inet_csk_destroy_sock+0x46/0xf0 [<ffffffff80453650>] tcp_close+0x320/0x4a0 [<ffffffff8046f7fe>] inet_release+0x3e/0x70 [<ffffffff8041c9f9>] sock_release+0x19/0xb0 [<ffffffff8041cfe2>] sock_close+0x12/0x40 [<ffffffff802ace0b>] __fput+0xbb/0x200 [<ffffffff802a9cc4>] filp_close+0x54/0x90 [<ffffffff802a9d9f>] sys_close+0x9f/0x110 [<ffffffff8022b9d4>] sysenter_dispatch+0x7/0x30 [<ffffffff80492ca7>] trace_hardirqs_on_thunk+0x3a/0x3f [-- Attachment #2: dmesg-and-config.tar.gz --] [-- Type: application/x-tgz, Size: 26720 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
[parent not found: <200812061304.12216.m.kozlowski-NWF1p15JEu3VItvQsEIGlw@public.gmane.org>]
* Re: linux-next: Tree for December 4 [not found] ` <200812061304.12216.m.kozlowski-NWF1p15JEu3VItvQsEIGlw@public.gmane.org> @ 2008-12-06 13:42 ` Alexander Beregalov 2008-12-07 0:43 ` Stephen Rothwell 0 siblings, 1 reply; 5+ messages in thread From: Alexander Beregalov @ 2008-12-06 13:42 UTC (permalink / raw) To: Mariusz Kozlowski Cc: Stephen Rothwell, kernel-testers-u79uwXL29TY76Z2rM5mHXA, linux-next-u79uwXL29TY76Z2rM5mHXA, LKML 2008/12/6 Mariusz Kozlowski <m.kozlowski-NWF1p15JEu3VItvQsEIGlw@public.gmane.org>: > ============================================================================= > BUG kmalloc-4096: Invalid object pointer 0xffff88007fb20010 > ----------------------------------------------------------------------------- > > INFO: Slab 0xffffe20001beef00 objects=7 used=1 fp=0xffff88007fb21048 flags=0x40000000000020c3 > Pid: 1, comm: swapper Not tainted 2.6.28-rc7-next-20081204 #1 > Call Trace: > [<ffffffff802a4edd>] slab_err+0x9d/0xc0 > [<ffffffff80218992>] save_stack_trace+0x22/0x40 > [<ffffffff80260f57>] save_trace+0x37/0xa0 > [<ffffffff80261027>] add_lock_to_list+0x67/0xf0 > [<ffffffff80244c42>] __release_region+0x22/0xc0 > [<ffffffff80264dac>] validate_chain+0xcdc/0x1200 > [<ffffffff802a558b>] check_bytes_and_report+0x4b/0x100 > [<ffffffff802a53f7>] slab_pad_check+0xe7/0x170 > [<ffffffff803bf590>] uart_remove_one_port+0xf0/0x120 > [<ffffffff802a6c28>] __slab_free+0x258/0x380 > [<ffffffff803bf590>] uart_remove_one_port+0xf0/0x120 > [<ffffffff802a6ee2>] kfree+0xb2/0x150 > [<ffffffff803bf590>] uart_remove_one_port+0xf0/0x120 > [<ffffffff803c4f18>] serial8250_register_port+0x88/0x1f0 > [<ffffffff804851d0>] serial_pnp_probe+0x1a0/0x220 > [<ffffffff8039bfef>] match_device+0x2f/0x50 > [<ffffffff8039c0a4>] pnp_device_probe+0x64/0xe0 > [<ffffffff803ca4d6>] driver_probe_device+0x96/0x1b0 > [<ffffffff803ca68c>] __driver_attach+0x9c/0xa0 > [<ffffffff803ca5f0>] __driver_attach+0x0/0xa0 > [<ffffffff803c98f3>] bus_for_each_dev+0x53/0x80 > [<ffffffff803ca08b>] bus_add_driver+0x1cb/0x230 > [<ffffffff803ca855>] driver_register+0x55/0x140 > [<ffffffff8062e200>] serial8250_pnp_init+0x0/0x10 > [<ffffffff8020903b>] _stext+0x3b/0x170 > [<ffffffff8027b181>] register_irq_proc+0xc1/0xe0 > [<ffffffff806119ad>] kernel_init+0x15d/0x1f0 > [<ffffffff8020c9fa>] child_rip+0xa/0x20 > [<ffffffff8020c3c0>] restore_args+0x0/0x30 > [<ffffffff80611850>] kernel_init+0x0/0x1f0 > [<ffffffff8020c9f0>] child_rip+0x0/0x20 > FIX kmalloc-4096: Object at 0xffff88007fb20010 not freed > 00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A Hi Mariusz This patch should fix it. http://lkml.org/lkml/2008/12/4/249 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: linux-next: Tree for December 4 2008-12-06 13:42 ` Alexander Beregalov @ 2008-12-07 0:43 ` Stephen Rothwell 0 siblings, 0 replies; 5+ messages in thread From: Stephen Rothwell @ 2008-12-07 0:43 UTC (permalink / raw) To: Alexander Beregalov; +Cc: Mariusz Kozlowski, kernel-testers, linux-next, LKML [-- Attachment #1: Type: text/plain, Size: 319 bytes --] On Sat, 6 Dec 2008 16:42:40 +0300 "Alexander Beregalov" <a.beregalov@gmail.com> wrote: > > This patch should fix it. > http://lkml.org/lkml/2008/12/4/249 And Alan already has that queued for linux-next. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au http://www.canb.auug.org.au/~sfr/ [-- Attachment #2: Type: application/pgp-signature, Size: 197 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
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2008-12-06 17:01 ` linux-next: Tree for December 4 Stephen Hemminger
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2008-12-06 17:30 ` Mariusz Kozlowski
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2008-12-06 12:04 ` Mariusz Kozlowski
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2008-12-06 13:42 ` Alexander Beregalov
2008-12-07 0:43 ` Stephen Rothwell
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