WARNING in reiserfs_put

WARNING in reiserfs_put_super
Status: upstream: reported on 2020/09/24 09:27
Reported-by: syzbot+fcdd69a8426baab36109@syzkaller.appspotmail.com
First crash: 230d, last: 7h10m

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 1 PID: 8446 at kernel/workqueue.c:4406 destroy_workqueue.cold+0x5/0x71 kernel/workqueue.c:4406
Modules linked in:
CPU: 1 PID: 8446 Comm: syz-executor.1 Not tainted 5.13.0-rc1-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: a0 c0 6a 89 f7 f1 89 c6 e8 6b 85 00 00 c6 44 24 27 01 e9 ab 1f 76 f8 48 c7 c7 80 f1 c0 8b e8 eb 9f e3 f8 eb c2 e8 44 20 9f f8 <0f> 0b 48 c7 c6 a0 c5 6a 89 48 c7 c7 e0 c0 6a 89 49 8d 96 60 01 00
RSP: 0018:ffffc900013dfcd0 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000
RDX: ffff88803f922180 RSI: ffffffff88d4e75c RDI: 0000000000000003
RBP: 000000000000000f R08: 0000000000000001 R09: 0000000000000003
R10: ffffffff814b0dd3 R11: 000000000000006d R12: dffffc0000000000
R13: ffffe8ffffcf9400 R14: ffff88801eee9800 R15: 0000000000000000
FS:  0000000002d24400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00e980500 CR3: 000000003faf5000 CR4: 00000000001526e0
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_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x467a57
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:00007ffebce998d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000467a57
RDX: 00007ffebce999ab RSI: 0000000000000002 RDI: 00007ffebce999a0
RBP: 00007ffebce999a0 R08: 00000000ffffffff R09: 00007ffebce99770
R10: 0000000002d258e3 R11: 0000000000000246 R12: 00000000004bee98
R13: 00007ffebce9aa70 R14: 0000000002d25810 R15: 00007ffebce9aab0

Crashes (23):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci-upstream-kasan-gce-selinux-root	2021/05/10 01:49	upstream	6efb943b	bc5434be	.config	log	report	info	WARNING in reiserfs_put_super
ci-qemu-upstream	2021/05/09 23:45	upstream	9819f682	bc5434be	.config	log	report	info	WARNING in reiserfs_put_super
ci-upstream-kasan-gce-selinux-root	2021/05/03 18:29	upstream	d2b6f8a1	ad61f371	.config	log	report	info	WARNING in reiserfs_put_super
ci-upstream-kasan-gce-selinux-root	2021/04/16 15:35	upstream	7e25f40e	7e2b734b	.config	log	report	info	WARNING in reiserfs_put_super
ci-upstream-kasan-gce-root	2021/04/15 22:30	upstream	7e25f40e	c59079a6	.config	log	report	info	WARNING in reiserfs_put_super
ci-upstream-kasan-gce-selinux-root	2021/04/08 03:46	upstream	3a229812	6a81331a	.config	log	report	info	WARNING in reiserfs_put_super
ci-upstream-kasan-gce-selinux-root	2021/03/29 22:43	upstream	1e43c377	6a81331a	.config	log	report	info	WARNING in reiserfs_put_super
ci-upstream-kasan-gce-selinux-root	2021/03/21 19:55	upstream	5ee96fa9	bea32f74	.config	log	report	info	WARNING in reiserfs_put_super
ci-upstream-kasan-gce-selinux-root	2021/03/20 06:02	upstream	1c273e10	3d01c4de	.config	log	report	info	WARNING in reiserfs_put_super
ci-upstream-kasan-gce-selinux-root	2021/02/21 06:26	upstream	e767b353	3e5ed8b4	.config	log	report	info	WARNING in reiserfs_put_super
ci-qemu-upstream	2021/02/20 22:59	upstream	f40ddce8	3e5ed8b4	.config	log	report	info	WARNING in reiserfs_put_super
ci-qemu-upstream-386	2021/05/10 12:28	upstream	6efb943b	ca873091	.config	log	report	info	WARNING in reiserfs_put_super
ci-qemu-upstream-386	2021/04/19 08:49	upstream	bf05bf16	50f523d7	.config	log	report	info	WARNING in reiserfs_put_super
ci-qemu-upstream-386	2021/04/18 10:19	upstream	c98ff1d0	7e2b734b	.config	log	report	info	WARNING in reiserfs_put_super
ci-upstream-linux-next-kasan-gce-root	2021/05/05 00:04	linux-next	9a9aa07a	06c27ff5	.config	log	report	info	WARNING in reiserfs_put_super
ci-qemu-upstream	2020/12/04 19:08	upstream	e87297fa	20366b87	.config	log	report	info
ci-qemu-upstream	2020/11/27 21:06	upstream	99c710c4	5018c946	.config	log	report	info
ci-qemu-upstream	2020/11/26 15:51	upstream	fa02fcd9	5018c946	.config	log	report	info
ci-upstream-kasan-gce-selinux-root	2020/11/24 21:46	upstream	80145ac2	e34b696c	.config	log	report	info
ci-qemu-upstream	2020/11/13 23:35	upstream	9e6a39ea	1bf9a662	.config	log	report	info
ci-qemu-upstream	2020/11/02 07:36	upstream	3cea11cd	8bc4594f	.config	log	report	info
ci-qemu-upstream	2020/09/27 21:42	upstream	16bc1d54	5dd8aee8	.config	log	report	info
ci-upstream-kasan-gce-selinux-root	2020/09/22 15:51	upstream	98477740	3e8f6c27	.config	log	report	info