------------[ cut here ]------------ WARNING: CPU: 0 PID: 7348 at kernel/workqueue.c:4407 destroy_workqueue.cold+0x5/0x71 kernel/workqueue.c:4407 Modules linked in: CPU: 0 PID: 7348 Comm: syz-executor.1 Not tainted 5.13.0-rc3-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:destroy_workqueue.cold+0x5/0x71 kernel/workqueue.c:4407 Code: 3f 65 8e f8 b9 e8 03 00 00 31 d2 48 c7 c7 20 d7 6a 89 f7 f1 89 c6 e8 5d 85 00 00 c6 44 24 2f 01 e9 07 c9 76 f8 e8 c9 cb 9f f8 <0f> 0b 48 c7 c6 20 dc 6a 89 48 c7 c7 60 d7 6a 89 49 8d 96 60 01 00 RSP: 0018:ffffc9000f62fcb0 EFLAGS: 00010093 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000 RDX: ffff88801448b880 RSI: ffffffff88d50cf7 RDI: 0000000000000003 RBP: 000000000000000f R08: 0000000000000001 R09: 0000000000000003 R10: ffffffff814bdcd3 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffe8ffadab9400 R14: ffff88806224f800 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802ca00000(0063) knlGS:00000000098c8380 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000006ed483 CR3: 0000000066438000 CR4: 0000000000150ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: reiserfs_put_super+0x234/0x5c0 fs/reiserfs/super.c:631 generic_shutdown_super+0x14c/0x370 fs/super.c:465 kill_block_super+0x97/0xf0 fs/super.c:1395 deactivate_locked_super+0x94/0x160 fs/super.c:335 deactivate_super+0xad/0xd0 fs/super.c:366 cleanup_mnt+0x3a2/0x540 fs/namespace.c:1136 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_fast_syscall_32+0x74/0xe0 arch/x86/entry/common.c:146 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:168 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f91549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ff80637c EFLAGS: 00000292 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ff806420 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080ea118 RBP: 00000000ff806420 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000