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WARNING: CPU: 0 PID: 8387 at kernel/workqueue.c:4406 destroy_workqueue.cold+0x5/0x71 kernel/workqueue.c:4406
Modules linked in:
CPU: 0 PID: 8387 Comm: syz-executor.3 Not tainted 5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:destroy_workqueue.cold+0x5/0x71 kernel/workqueue.c:4406
Code: e0 b9 6a 89 f7 f1 89 c6 e8 ee 8b 00 00 c6 44 24 27 01 e9 df aa 88 f8 48 c7 c7 80 f1 c0 8b e8 ff 3e f5 f8 eb c2 e8 a8 8b b1 f8 <0f> 0b 48 c7 c6 e0 be 6a 89 48 c7 c7 20 ba 6a 89 49 8d 96 60 01 00
RSP: 0018:ffffc90001d2fce8 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000
RDX: ffff8880157d0000 RSI: ffffffff88c265d8 RDI: 0000000000000003
RBP: 000000000000000f R08: 0000000000000001 R09: 0000000000000003
R10: ffffffff814b1783 R11: 0000000000000000 R12: dffffc0000000000
R13: ffffe8ffffc8f800 R14: ffff888027dc8c00 R15: 0000000000000000
FS:  000000000323d400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff2b24ff78 CR3: 0000000070456000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 reiserfs_put_super+0x234/0x5c0 fs/reiserfs/super.c:631
 generic_shutdown_super+0x144/0x370 fs/super.c:464
 kill_block_super+0x97/0xf0 fs/super.c:1394
 deactivate_locked_super+0x94/0x160 fs/super.c:335
 deactivate_super+0xad/0xd0 fs/super.c:366
 cleanup_mnt+0x3a3/0x530 fs/namespace.c:1136
 task_work_run+0xdd/0x1a0 kernel/task_work.c:140
 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+0x249/0x250 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
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4678b7
Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffed4e87418 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000004678b7
RDX: 00007ffed4e874ec RSI: 0000000000000002 RDI: 00007ffed4e874e0
RBP: 00007ffed4e874e0 R08: 00000000ffffffff R09: 00007ffed4e872b0
R10: 000000000323e8e3 R11: 0000000000000246 R12: 00000000004bebb2
R13: 00007ffed4e885b0 R14: 000000000323e810 R15: 00007ffed4e885f0