syzbot


WARNING in dst_release (2)

Status: closed as invalid on 2021/12/14 10:52
Reported-by: syzbot+@syzkaller.appspotmail.com
First crash: 513d, last: 291d

Cause bisection: failed (bisect log)

Fix bisection: fixed by (bisect log) :
commit df0826312a23e495faa91eee0d6ac31bca35dc09
Author: Allison Henderson <allison.henderson@oracle.com>
Date: Sun Aug 8 15:27:13 2021 +0000

  xfs: add attr state machine tracepoints

similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in dst_release syz done 2 587d 586d 22/24 fixed on 2021/04/09 19:46
upstream WARNING in dst_release (3) 3 206d 286d 22/24 fixed on 2022/03/08 16:11

Sample crash report:
------------[ cut here ]------------
dst_release underflow
WARNING: CPU: 1 PID: 10 at net/core/dst.c:173 dst_release net/core/dst.c:173 [inline]
WARNING: CPU: 1 PID: 10 at net/core/dst.c:173 dst_release+0xd2/0xe0 net/core/dst.c:167
Modules linked in:
CPU: 1 PID: 10 Comm: kworker/u4:1 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:dst_release net/core/dst.c:173 [inline]
RIP: 0010:dst_release+0xd2/0xe0 net/core/dst.c:167
Code: 89 c3 89 c6 e8 2f d7 55 fa 85 db 74 a4 e9 a0 cb 0e 02 e8 71 ce 55 fa 48 c7 c7 00 f8 8a 8a c6 05 db b5 39 06 01 e8 c5 fe d0 01 <0f> 0b eb c6 66 2e 0f 1f 84 00 00 00 00 00 41 56 41 55 41 54 55 48
RSP: 0018:ffffc90000f0f9e8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888012216280 RSI: ffffffff815cfbd8 RDI: fffff520001e1f2f
RBP: ffffe8ffffcc8ac0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815c994e R11: 0000000000000000 R12: ffff88802d43ad00
R13: 00000000ffffffff R14: 0000000000000007 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001886708 CR3: 0000000031629000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 dst_cache_destroy net/core/dst_cache.c:160 [inline]
 dst_cache_destroy+0xcb/0x190 net/core/dst_cache.c:152
 ip_tunnel_dev_free+0x21/0x60 net/ipv4/ip_tunnel.c:1011
 netdev_run_todo+0x6b4/0xa80 net/core/dev.c:10589
 ip_tunnel_delete_nets+0x3a4/0x5b0 net/ipv4/ip_tunnel.c:1124
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:591
 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444
 kthread+0x3e5/0x4d0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Crashes (30):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/09/02 21:38 upstream 4ac6d90867a4 15cea0a3 .config log report syz WARNING in dst_release
ci-upstream-linux-next-kasan-gce-root 2021/08/22 04:06 linux-next 86ed57fd8c93 b599f2fc .config log report syz WARNING in dst_release
ci-upstream-kasan-gce-root 2021/12/09 02:28 upstream 2a987e65025e a4a2a501 .config log report info WARNING in dst_release
ci-upstream-kasan-gce-smack-root 2021/11/29 19:11 upstream d58071a8a76d d0830353 .config log report info WARNING in dst_release
ci-upstream-kasan-gce-selinux-root 2021/08/19 16:34 upstream d6d09a694205 b599f2fc .config log report info WARNING in dst_release
ci-upstream-kasan-gce-selinux-root 2021/07/25 03:59 upstream 6498f6151825 4d1b57d4 .config log report info WARNING in dst_release
ci-upstream-kasan-gce-root 2021/07/22 16:33 upstream 3d5895cd3517 302e51de .config log report info WARNING in dst_release
ci-upstream-kasan-gce-selinux-root 2021/07/09 01:22 upstream 3dbdb38e2869 1b20171a .config log report info WARNING in dst_release
ci-upstream-kasan-gce-smack-root 2021/07/04 20:48 upstream 3dbdb38e2869 55aa55c2 .config log report info WARNING in dst_release
ci-upstream-kasan-gce-386 2021/07/05 11:13 upstream 3dbdb38e2869 55aa55c2 .config log report info WARNING in dst_release
ci-upstream-net-this-kasan-gce 2021/12/05 08:39 net 2be6d4d16a08 a617004c .config log report info WARNING in dst_release
ci-upstream-net-this-kasan-gce 2021/11/22 07:01 net f9390b249c90 4eb20a4e .config log report info WARNING in dst_release
ci-upstream-net-this-kasan-gce 2021/10/20 04:52 net 04ee2752a5a9 466b7db1 .config log report info WARNING in dst_release
ci-upstream-net-this-kasan-gce 2021/10/20 04:04 net 04ee2752a5a9 466b7db1 .config log report info WARNING in dst_release
ci-upstream-net-this-kasan-gce 2021/10/16 03:51 net 4884ddba7f12 0c5d9412 .config log report info WARNING in dst_release
ci-upstream-net-this-kasan-gce 2021/08/18 12:16 net 1b80fec7b043 a2fe1cb5 .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/12/10 06:26 net-next 3150a73366b6 4d4ce9bc .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/12/06 09:26 net-next ce83278f313c a617004c .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/11/29 15:03 net-next 2f7ed29f2c54 d0830353 .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/11/24 23:16 net-next d156250018ab 545ab074 .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/10/01 23:46 net-next 129291980f49 cc80db95 .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/09/22 08:34 net-next 07b855628c22 169724fe .config log report info WARNING in dst_release
ci-upstream-bpf-next-kasan-gce 2021/09/06 03:38 bpf-next a16ef91aa61a d236a457 .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/07/13 17:17 net-next 5e437416ff66 fa0594c3 .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/06/20 07:27 net-next adc2e56ebe63 aba2b2fb .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/06/02 22:43 net-next 5fe8e519e44f 0740de69 .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/05/27 16:08 net-next 59c56342459a 858ea628 .config log report info WARNING in dst_release
ci-upstream-net-kasan-gce 2021/05/02 04:49 net-next 95aafe911db6 77e2b668 .config log report info WARNING in dst_release
ci-upstream-linux-next-kasan-gce-root 2021/12/05 06:41 linux-next f81e94e91878 a617004c .config log report info WARNING in dst_release
ci-upstream-linux-next-kasan-gce-root 2021/11/26 17:49 linux-next f81e94e91878 63eeac02 .config log report info WARNING in dst_release
* Struck through repros no longer work on HEAD.