From: Daniel Borkmann <daniel@iogearbox.net>
To: davem@davemloft.net
Cc: ast@plumgrid.com, jiri@resnulli.us, jhs@mojatatu.com,
edumazet@google.com, netdev@vger.kernel.org,
Daniel Borkmann <daniel@iogearbox.net>
Subject: [PATCH net 0/3] Couple of classifier fixes
Date: Fri, 17 Jul 2015 22:38:42 +0200 [thread overview]
Message-ID: <cover.1437163466.git.daniel@iogearbox.net> (raw)
This fixes a couple of panics in the form of (analogous for
cls_flow{,er}):
[ 912.759276] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 912.759373] IP: [<ffffffffa09d4d6d>] cls_bpf_change+0x23d/0x268 [cls_bpf]
[ 912.759441] PGD 8783c067 PUD 5f684067 PMD 0
[ 912.759491] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC
[ 912.759543] Modules linked in: cls_bpf(E) act_gact [...]
[ 912.772734] CPU: 3 PID: 10489 Comm: tc Tainted: G W E 4.2.0-rc2+ #73
[ 912.775004] Hardware name: Apple Inc. MacBookAir5,1/Mac-66F35F19FE2A0D05, BIOS MBA51.88Z.00EF.B02.1211271028 11/27/2012
[ 912.777327] task: ffff88025eaa8000 ti: ffff88005f734000 task.ti: ffff88005f734000
[ 912.779662] RIP: 0010:[<ffffffffa09d4d6d>] [<ffffffffa09d4d6d>] cls_bpf_change+0x23d/0x268 [cls_bpf]
[ 912.781991] RSP: 0018:ffff88005f7379c8 EFLAGS: 00010286
[ 912.784183] RAX: ffff880201d64e48 RBX: 0000000000000000 RCX: ffff880201d64e40
[ 912.786402] RDX: 0000000000000000 RSI: ffffffffa09d51c0 RDI: ffffffffa09d51a6
[ 912.788625] RBP: ffff88005f737a68 R08: 0000000000000000 R09: 0000000000000000
[ 912.790854] R10: 0000000000000001 R11: 0000000000000001 R12: ffff880078ab5a80
[ 912.793082] R13: ffff880232b31570 R14: ffff88005f737ae0 R15: ffff8801e215d1d0
[ 912.795181] FS: 00007f3c0c80d740(0000) GS:ffff880265400000(0000) knlGS:0000000000000000
[ 912.797281] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 912.799402] CR2: 0000000000000000 CR3: 000000005460f000 CR4: 00000000001407e0
[ 912.799403] Stack:
[ 912.799407] ffffffff00000000 ffff88023ea18000 000000005f737a08 0000000000000000
[ 912.799415] ffffffff81f06140 ffff880201d64e40 0000000000000000 ffff88023ea1804c
[ 912.799418] 0000000000000000 ffff88023ea18044 ffff88023ea18030 ffff88023ea18038
[ 912.799418] Call Trace:
[ 912.799437] [<ffffffff816d5685>] tc_ctl_tfilter+0x335/0x910
[ 912.799443] [<ffffffff813622a8>] ? security_capable+0x48/0x60
[ 912.799448] [<ffffffff816b90e5>] rtnetlink_rcv_msg+0x95/0x240
[ 912.799454] [<ffffffff810f612d>] ? trace_hardirqs_on+0xd/0x10
[ 912.799456] [<ffffffff816b902f>] ? rtnetlink_rcv+0x1f/0x40
[ 912.799459] [<ffffffff816b902f>] ? rtnetlink_rcv+0x1f/0x40
[ 912.799461] [<ffffffff816b9050>] ? rtnetlink_rcv+0x40/0x40
[ 912.799464] [<ffffffff816df38f>] netlink_rcv_skb+0xaf/0xc0
[ 912.799467] [<ffffffff816b903e>] rtnetlink_rcv+0x2e/0x40
[ 912.799469] [<ffffffff816deaef>] netlink_unicast+0xef/0x1b0
[ 912.799471] [<ffffffff816defa0>] netlink_sendmsg+0x3f0/0x620
[ 912.799476] [<ffffffff81687028>] sock_sendmsg+0x38/0x50
[ 912.799479] [<ffffffff81687938>] ___sys_sendmsg+0x288/0x290
[ 912.799482] [<ffffffff810f7852>] ? __lock_acquire+0x572/0x2050
[ 912.799488] [<ffffffff810265db>] ? native_sched_clock+0x2b/0x90
[ 912.799493] [<ffffffff8116135f>] ? __audit_syscall_entry+0xaf/0x100
[ 912.799497] [<ffffffff8116135f>] ? __audit_syscall_entry+0xaf/0x100
[ 912.799501] [<ffffffff8112aa19>] ? current_kernel_time+0x69/0xd0
[ 912.799505] [<ffffffff81266f16>] ? __fget_light+0x66/0x90
[ 912.799508] [<ffffffff81688812>] __sys_sendmsg+0x42/0x80
[ 912.799510] [<ffffffff81688862>] SyS_sendmsg+0x12/0x20
[ 912.799515] [<ffffffff817f9a6e>] entry_SYSCALL_64_fastpath+0x12/0x76
[ 912.799540] Code: 4d 88 49 8b 57 08 48 89 51 08 49 8b 57 10 48 89 c8 48 83 c0 08 48
89 51 10 48 8b 51 10 48 c7 c6 c0 51 9d a0 48 c7 c7 a6 51 9d a0 <48>
89 02 48 8b 51 08 48 89 42 08 48 b8 00 02 20 00 00 00 ad de
[ 912.799544] RIP [<ffffffffa09d4d6d>] cls_bpf_change+0x23d/0x268 [cls_bpf]
[ 912.799544] RSP <ffff88005f7379c8>
[ 912.799545] CR2: 0000000000000000
[ 912.807380] ---[ end trace a6440067cfdc7c29 ]---
I've split them into 3 patches, so they can be backported easier
when needed.
Thanks!
Daniel Borkmann (3):
sched: cls_bpf: fix panic on filter replace
sched: cls_flower: fix panic on filter replace
sched: cls_flow: fix panic on filter replace
net/sched/cls_bpf.c | 2 +-
net/sched/cls_flow.c | 5 +++--
net/sched/cls_flower.c | 2 +-
3 files changed, 5 insertions(+), 4 deletions(-)
--
1.9.3
next reply other threads:[~2015-07-17 20:38 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-17 20:38 Daniel Borkmann [this message]
2015-07-17 20:38 ` [PATCH net 1/3] sched: cls_bpf: fix panic on filter replace Daniel Borkmann
2015-07-17 21:05 ` John Fastabend
2015-07-17 21:07 ` Daniel Borkmann
2015-07-17 21:31 ` Alexei Starovoitov
2015-07-17 20:38 ` [PATCH net 2/3] sched: cls_flower: " Daniel Borkmann
2015-07-18 20:37 ` Jiri Pirko
2015-07-17 20:38 ` [PATCH net 3/3] sched: cls_flow: " Daniel Borkmann
2015-07-17 21:07 ` John Fastabend
2015-07-17 20:41 ` [PATCH net 0/3] Couple of classifier fixes Daniel Borkmann
2015-07-17 21:01 ` John Fastabend
2015-07-21 7:25 ` David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cover.1437163466.git.daniel@iogearbox.net \
--to=daniel@iogearbox.net \
--cc=ast@plumgrid.com \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=jhs@mojatatu.com \
--cc=jiri@resnulli.us \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.