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WARNING in xfrm6_tunnel_net_exit

Status: fixed on 2018/05/17 10:02
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+777bf170a89e7b326405@syzkaller.appspotmail.com
Fix commit: b48c05ab5d32 xfrm: Fix warning in xfrm6_tunnel_net_exit.
First crash: 2307d, last: 2171d
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[PATCH 2/3] xfrm: Fix warning in xfrm6_tunnel_net_exit. 1 (1) 2018/05/07 08:43
WARNING in xfrm6_tunnel_net_exit 0 (2) 2018/04/06 07:55
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in xfrm6_tunnel_net_exit (2) net C 48816 1885d 2167d 11/26 fixed on 2019/03/06 07:43
linux-4.19 WARNING in xfrm6_tunnel_net_exit syz done 34 1592d 1840d 1/1 fixed on 2020/01/14 19:04

Sample crash report:
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
WARNING: CPU: 0 PID: 180 at net/ipv6/xfrm6_tunnel.c:345 xfrm6_tunnel_net_exit+0x2c0/0x4f0 net/ipv6/xfrm6_tunnel.c:345
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 180 Comm: kworker/u4:4 Not tainted 4.16.0+ #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b9/0x29f lib/dump_stack.c:53
 panic+0x22f/0x4de kernel/panic.c:183
 __warn.cold.8+0x163/0x1a3 kernel/panic.c:547
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1bc/0x470 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:991
RIP: 0010:xfrm6_tunnel_net_exit+0x2c0/0x4f0 net/ipv6/xfrm6_tunnel.c:345
RSP: 0018:ffff8801d96373d8 EFLAGS: 00010293
RAX: ffff8801d961c080 RBX: ffff8801b0e999a0 RCX: ffffffff866b08c6
RDX: 0000000000000000 RSI: ffffffff866b08d0 RDI: 0000000000000007
RBP: ffff8801d96374f8 R08: ffff8801d961c080 R09: ffffed003b6046c2
R10: 0000000000000003 R11: 0000000000000003 R12: 000000000000007c
R13: ffffed003b2c6e82 R14: ffff8801d96374d0 R15: ffff8801b6185f80
 ops_exit_list.isra.7+0xb0/0x160 net/core/net_namespace.c:152
 cleanup_net+0x51d/0xb20 net/core/net_namespace.c:523
 process_one_work+0xc1e/0x1b50 kernel/workqueue.c:2145
 worker_thread+0x1cc/0x1440 kernel/workqueue.c:2279
 kthread+0x345/0x410 kernel/kthread.c:238
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:411
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (14002):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/04/06 07:54 upstream 3c8ba0d61d04 a932eae6 .config console log report syz ci-upstream-kasan-gce-root
2018/05/14 13:49 upstream 66e1c94db3cd 9467cacb .config console log report ci-upstream-kasan-gce-root
2018/05/14 12:16 upstream 66e1c94db3cd d131f1b9 .config console log report ci-upstream-kasan-gce-root
2018/05/14 08:28 upstream 66e1c94db3cd 481f030c .config console log report ci-upstream-kasan-gce-root
2018/05/14 01:09 upstream 66e1c94db3cd 481f030c .config console log report ci-upstream-kasan-gce-root
2018/05/13 12:45 upstream ccda3c4b7777 c05b619d .config console log report ci-upstream-kasan-gce-root
2018/05/13 02:58 upstream 427fbe89261d e726f42b .config console log report ci-upstream-kasan-gce-root
2018/05/12 23:39 upstream 427fbe89261d e726f42b .config console log report ci-upstream-kasan-gce
2018/05/12 22:22 upstream 427fbe89261d e726f42b .config console log report ci-upstream-kasan-gce-root
2018/05/12 20:48 upstream f0ab773f5c96 e726f42b .config console log report ci-upstream-kasan-gce
2018/05/12 17:14 upstream f0ab773f5c96 e726f42b .config console log report ci-upstream-kasan-gce-root
2018/05/12 14:28 upstream f0ab773f5c96 e726f42b .config console log report ci-upstream-kasan-gce-root
2018/05/12 08:50 upstream f0ab773f5c96 e726f42b .config console log report ci-upstream-kasan-gce-root
2018/05/11 10:17 upstream 008464a9360e 12c7428a .config console log report ci-upstream-kasan-gce-root
2018/05/11 09:09 upstream 008464a9360e 12c7428a .config console log report ci-upstream-kasan-gce-root
2018/05/10 01:51 upstream 008464a9360e 12c7428a .config console log report ci-upstream-kasan-gce-root
2018/05/09 06:06 upstream 036db8bd9637 b88872ba .config console log report ci-upstream-kasan-gce-root
2018/05/09 03:01 upstream 036db8bd9637 b88872ba .config console log report ci-upstream-kasan-gce-root
2018/05/07 17:46 upstream 75bc37fefc44 9e0846e8 .config console log report ci-upstream-kasan-gce
2018/05/07 13:17 upstream 75bc37fefc44 a211da1a .config console log report ci-upstream-kasan-gce-root
2018/05/07 00:34 upstream 701e39d05119 a211da1a .config console log report ci-upstream-kasan-gce-root
2018/05/06 13:45 upstream ee946c36be21 6c18ddb0 .config console log report ci-upstream-kasan-gce-root
2018/05/06 09:23 upstream ee946c36be21 78b251cb .config console log report ci-upstream-kasan-gce-root
2018/05/06 08:13 upstream ee946c36be21 78b251cb .config console log report ci-upstream-kasan-gce-root
2018/05/06 00:14 upstream c1c07416cdd4 78b251cb .config console log report ci-upstream-kasan-gce
2018/05/05 21:57 upstream c1c07416cdd4 6a0382b5 .config console log report ci-upstream-kasan-gce-root
2018/05/05 13:01 upstream c1c07416cdd4 6a0382b5 .config console log report ci-upstream-kasan-gce-root
2018/05/05 03:38 upstream 625e2001e99e 9ce14f4b .config console log report ci-upstream-kasan-gce-root
2018/05/05 01:04 upstream 625e2001e99e 9ce14f4b .config console log report ci-upstream-kasan-gce-root
2018/05/04 14:30 upstream 150426981426 9ce14f4b .config console log report ci-upstream-kasan-gce-root
2018/05/04 11:51 upstream 150426981426 9ce14f4b .config console log report ci-upstream-kasan-gce-root
2018/05/03 06:10 upstream f4ef6a438cee 9ce14f4b .config console log report ci-upstream-kasan-gce-root
2018/05/02 22:54 upstream 2d618bdf7163 d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/02 18:26 upstream 2d618bdf7163 d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/02 09:31 upstream f2125992e7cb d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/02 04:12 upstream f2125992e7cb d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/01 15:40 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/01 13:26 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/01 01:07 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/08 18:56 upstream 036db8bd9637 b88872ba .config console log report ci-upstream-kasan-gce-386
2018/04/23 23:57 net-next-old a56e6bcd34b5 0d8e591c .config console log report ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.