[syzbot] WARNING in atp_close (2)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 1216f02e Add linux-next specific files for 20210415
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=137dbb9ad00000
kernel config: https://syzkaller.appspot.com/x/.config?x=3491b04113499f81
dashboard link: https://syzkaller.appspot.com/bug?extid=e03dc56b8ee7ec4b4dfd

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e03dc5...@syzkaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 1 PID: 18911 at kernel/workqueue.c:3043 __flush_work+0x8f4/0xad0 kernel/workqueue.c:3043
Modules linked in:
CPU: 1 PID: 18911 Comm: syz-executor.2 Not tainted 5.12.0-rc7-next-20210415-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__flush_work+0x8f4/0xad0 kernel/workqueue.c:3043
Code: e3 08 48 0f ba 28 03 48 8b 95 70 fe ff ff 81 cb e0 01 00 00 e9 7e fa ff ff e8 68 4e 29 00 0f 0b e9 2e fc ff ff e8 5c 4e 29 00 <0f> 0b 45 31 f6 e9 1f fc ff ff e8 0d 0b 6e 00 e9 07 fb ff ff e8 43
RSP: 0018:ffffc90001a7fb48 EFLAGS: 00010212
RAX: 000000000000f9f3 RBX: dffffc0000000000 RCX: ffffc9000daae000
RDX: 0000000000040000 RSI: ffffffff814b29e4 RDI: 0000000000000003
RBP: ffffc90001a7fcd8 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff814b2196 R11: 0000000000000000 R12: 0000000000000001
R13: 1ffff9200034ff9e R14: 0000000000000001 R15: ffff88801d9d1c80
FS: 00007f53abfa1700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000002f16708 CR3: 000000001e366000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3139
atp_close+0x5e/0xa0 drivers/input/mouse/appletouch.c:812
input_close_device+0x156/0x1f0 drivers/input/input.c:687
evdev_close_device drivers/input/evdev.c:414 [inline]
evdev_release+0x34c/0x410 drivers/input/evdev.c:456
__fput+0x288/0x920 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:174 [inline]
exit_to_user_mode_prepare+0x272/0x280 kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x419544
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007f53abfa0cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffea RBX: 6666666666666667 RCX: 0000000000419544
RDX: 0000000000024200 RSI: 00007f53abfa0d60 RDI: 00000000ffffff9c
RBP: 00007f53abfa0d60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000024200
R13: 00007ffdda3a06af R14: 00007f53abfa1300 R15: 0000000000022000


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.