syzbot


WARNING: refcount bug in __linkwatch_run_queue
Status: auto-closed as invalid on 2022/03/22 02:36
Reported-by: syzbot+6f8ddb9f2ff4adf065cb@syzkaller.appspotmail.com
First crash: 196d, last: 184d

Sample crash report:
------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 32 at lib/refcount.c:31 refcount_warn_saturate+0x17c/0x1a0 lib/refcount.c:31
Modules linked in:
CPU: 1 PID: 32 Comm: kworker/1:1 Not tainted 5.16.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events linkwatch_event
RIP: 0010:refcount_warn_saturate+0x17c/0x1a0 lib/refcount.c:31
Code: d5 8a 31 c0 e8 a5 47 38 fd 0f 0b e9 64 ff ff ff e8 f9 6d 6e fd c6 05 34 3c d5 09 01 48 c7 c7 80 02 d5 8a 31 c0 e8 84 47 38 fd <0f> 0b e9 43 ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c a2 fe ff
RSP: 0018:ffffc90000e7fb68 EFLAGS: 00010246
RAX: 02d04ffc2c754100 RBX: 0000000000000004 RCX: ffff8880141a8000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000004 R08: ffffffff8169fd72 R09: ffffed10173667b1
R10: ffffed10173667b1 R11: 0000000000000000 R12: ffff88808a020000
R13: 1ffff110114040b7 R14: 1ffff110114040b8 R15: ffff88808a0205b8
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c021467000 CR3: 0000000022478000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __linkwatch_run_queue+0x4f5/0x800 net/core/link_watch.c:213
 linkwatch_event+0x48/0x50 net/core/link_watch.c:252
 process_one_work+0x853/0x1140 kernel/workqueue.c:2298
 worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
 kthread+0x468/0x490 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30
 </TASK>

Crashes (11):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-smack-root 2021/11/23 21:53 upstream 136057256686 545ab074 .config log report info WARNING: refcount bug in __linkwatch_run_queue
ci-upstream-kasan-gce-smack-root 2021/11/23 16:25 upstream 136057256686 545ab074 .config log report info WARNING: refcount bug in __linkwatch_run_queue
ci-upstream-kasan-gce-smack-root 2021/11/22 16:28 upstream 136057256686 545ab074 .config log report info WARNING: refcount bug in __linkwatch_run_queue
ci-upstream-kasan-gce-smack-root 2021/11/21 14:53 upstream 923dcc5eb0c1 4eb20a4e .config log report info WARNING: refcount bug in __linkwatch_run_queue
ci-upstream-kasan-gce-smack-root 2021/11/21 04:57 upstream 923dcc5eb0c1 4eb20a4e .config log report info WARNING: refcount bug in __linkwatch_run_queue
ci-upstream-kasan-gce-smack-root 2021/11/18 17:04 upstream 42eb8fdac2fc 31a30fc0 .config log report info WARNING: refcount bug in __linkwatch_run_queue
ci-upstream-kasan-gce-smack-root 2021/11/17 19:11 upstream ee1703cda8dc cafff8b6 .config log report info WARNING: refcount bug in __linkwatch_run_queue
ci-upstream-kasan-gce-smack-root 2021/11/17 14:58 upstream 8ab774587903 cafff8b6 .config log report info WARNING: refcount bug in __linkwatch_run_queue
ci-upstream-kasan-gce-smack-root 2021/11/15 05:09 upstream fa55b7dcdc43 83f5c9b5 .config log report info WARNING: refcount bug in __linkwatch_run_queue
ci-upstream-kasan-gce-smack-root 2021/11/13 11:10 upstream 66f4beaa6c1d 83f5c9b5 .config log report info WARNING: refcount bug in __linkwatch_run_queue
ci-upstream-kasan-gce-smack-root 2021/11/12 02:12 upstream 5833291ab6de 75b04091 .config log report info WARNING: refcount bug in __linkwatch_run_queue