WARNING in kill_block

WARNING in kill_block_super
Status: upstream: reported C repro on 2019/04/12 21:39
Reported-by: syzbot+d099fa583564b205b86d@syzkaller.appspotmail.com
First crash: 1010d, last: 1d08h

similar bugs (1):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in kill_block_super	C			51	1371d	1389d	6/22	fixed on 2018/05/08 18:30

Sample crash report:

RDX: 0000000020000200 RSI: 00000000200001c0 RDI: 0000000020000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc1f0b79a8
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc1f0b781c
R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7967 at fs/super.c:1163 kill_block_super+0xbe/0xe0 fs/super.c:1163
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7967 Comm: syz-executor943 Not tainted 4.14.231-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x44 kernel/panic.c:547
 report_bug+0x208/0x250 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:kill_block_super+0xbe/0xe0 fs/super.c:1163
RSP: 0018:ffff8880b30f7bb0 EFLAGS: 00010297
RAX: ffff8880b45b0340 RBX: 0000000000000000 RCX: 1ffff110168b617e
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88808e4095f0
RBP: ffff8880967fa180 R08: ffffffff8b9b33b0 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880b45b0340 R12: ffff88808e409140
R13: ffffffff890a2130 R14: ffffffff88f44f40 R15: dffffc0000000000
 cramfs_kill_sb+0x38/0x50 fs/cramfs/inode.c:247
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 sget_userns+0x9c4/0xc10 fs/super.c:537
 sget+0xd1/0x110 fs/super.c:572
 mount_bdev+0xcd/0x360 fs/super.c:1107
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0xe53/0x2a00 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3072
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x43ff39
RSP: 002b:00007ffc1f0b7808 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 000000000043ff39
RDX: 0000000020000200 RSI: 00000000200001c0 RDI: 0000000020000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc1f0b79a8
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc1f0b781c
R13: 431bde82d7b634db R14: 00000000004ae018 R15: 0000000000400488
Kernel Offset: disabled
Rebooting in 86400 seconds..

Fix bisection attempts:
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro
ci2-linux-4-14	2021/11/16 13:36	linux-4.14.y	5f9f3b0057d5	95777977	.config	log	report	syz	C
ci2-linux-4-14	2021/10/17 13:14	linux-4.14.y	f6b016a9d961	95777977	.config	log	report	syz	C
ci2-linux-4-14	2021/09/17 12:52	linux-4.14.y	f96eb53cbd76	95777977	.config	log	report	syz	C
ci2-linux-4-14	2021/08/18 12:25	linux-4.14.y	162b95d01320	95777977	.config	log	report	syz	C
ci2-linux-4-14	2021/07/19 12:02	linux-4.14.y	4e68c9b0763f	95777977	.config	log	report	syz	C
ci2-linux-4-14	2021/06/19 11:33	linux-4.14.y	cfb41ef9deb1	95777977	.config	log	report	syz	C

Crashes (11500):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci2-linux-4-14	2021/04/21 14:24	linux-4.14.y	cf256fbcbe34	95777977	.config	log	report	syz	C		WARNING in kill_block_super
ci2-linux-4-14	2021/01/24 09:51	linux-4.14.y	2d2791fce891	52e37319	.config	log	report	syz	C		WARNING in kill_block_super
ci2-linux-4-14	2021/01/23 04:43	linux-4.14.y	2762b48e9611	52e37319	.config	log	report	syz	C		WARNING in kill_block_super
ci2-linux-4-14	2020/10/31 17:18	linux-4.14.y	2b7915014161	8bc4594f	.config	log	report	syz	C
ci2-linux-4-14	2020/10/25 10:54	linux-4.14.y	5b7a52cd2eef	a1839e81	.config	log	report	syz	C
ci2-linux-4-14	2020/10/23 01:17	linux-4.14.y	5b7a52cd2eef	4e740c00	.config	log	report	syz	C
ci2-linux-4-14	2020/10/02 09:31	linux-4.14.y	cbfa1702aaf6	9602ddf4	.config	log	report	syz	C
ci2-linux-4-14	2020/08/24 09:38	linux-4.14.y	6a24ca2506d6	cef5ae68	.config	log	report	syz	C
ci2-linux-4-14	2020/08/23 00:47	linux-4.14.y	6a24ca2506d6	1da71ab0	.config	log	report	syz	C
ci2-linux-4-14	2020/08/22 22:40	linux-4.14.y	6a24ca2506d6	1da71ab0	.config	log	report	syz	C
ci2-linux-4-14	2020/08/22 14:51	linux-4.14.y	6a24ca2506d6	6436ce4b	.config	log	report	syz	C
ci2-linux-4-14	2020/08/20 10:25	linux-4.14.y	14b58326976d	ed282a3a	.config	log	report	syz	C
ci2-linux-4-14	2020/08/19 05:52	linux-4.14.y	14b58326976d	e1c29030	.config	log	report	syz	C
ci2-linux-4-14	2020/08/17 11:16	linux-4.14.y	14b58326976d	5ce13532	.config	log	report	syz	C
ci2-linux-4-14	2020/08/01 06:43	linux-4.14.y	7f2c5eb458b8	8df85ed9	.config	log	report	syz	C
ci2-linux-4-14	2020/07/30 19:07	linux-4.14.y	e5a54aa2d312	b0947553	.config	log	report	syz	C
ci2-linux-4-14	2020/07/11 08:54	linux-4.14.y	b850307b279c	18d18b59	.config	log	report	syz	C
ci2-linux-4-14	2020/07/09 23:55	linux-4.14.y	b850307b279c	edf162e8	.config	log	report	syz	C
ci2-linux-4-14	2020/07/06 23:42	linux-4.14.y	b850307b279c	ef278c73	.config	log	report	syz	C
ci2-linux-4-14	2020/07/04 10:49	linux-4.14.y	b850307b279c	51095195	.config	log	report	syz	C
ci2-linux-4-14	2020/06/08 14:04	linux-4.14.y	c6db52a88798	7604bb03	.config	log	report	syz	C
ci2-linux-4-14	2020/05/30 18:34	linux-4.14.y	4f68020fef1c	6f3e1c7c	.config	log	report	syz	C
ci2-linux-4-14	2020/05/21 05:03	linux-4.14.y	a41ba30d9df2	4afdfa20	.config	log	report	syz	C
ci2-linux-4-14	2020/03/12 19:45	linux-4.14.y	12cd844a39ed	d850e9d0	.config	log	report	syz	C
ci2-linux-4-14	2020/03/12 09:19	linux-4.14.y	12cd844a39ed	d850e9d0	.config	log	report	syz	C
ci2-linux-4-14	2020/02/29 23:58	linux-4.14.y	78d697fc93f9	c88c7b75	.config	log	report	syz	C
ci2-linux-4-14	2020/02/15 05:45	linux-4.14.y	98db2bf27b9e	5d7b90f1	.config	log	report	syz	C
ci2-linux-4-14	2020/02/10 05:39	linux-4.14.y	e0f8b8a65a47	35f5e45e	.config	log	report	syz	C
ci2-linux-4-14	2020/02/03 22:26	linux-4.14.y	9fa690a2a016	93e5e335	.config	log	report	syz	C
ci2-linux-4-14	2020/02/03 06:16	linux-4.14.y	9fa690a2a016	93e5e335	.config	log	report	syz	C
ci2-linux-4-14	2020/01/30 01:07	linux-4.14.y	9fa690a2a016	5ed23f9a	.config	log	report	syz	C
ci2-linux-4-14	2020/01/27 07:09	linux-4.14.y	8bac50406cca	dd56146d	.config	log	report	syz	C
ci2-linux-4-14	2020/01/15 09:29	linux-4.14.y	c04fc6fa5c96	fa12bd3c	.config	log	report	syz	C
ci2-linux-4-14	2019/12/28 19:02	linux-4.14.y	e1f7d50ae3a3	af6b8ef8	.config	log	report	syz	C
ci2-linux-4-14	2019/11/03 23:22	linux-4.14.y	ddef1e8e3f6e	b35fad31	.config	log	report	syz	C
ci2-linux-4-14	2019/08/25 12:06	linux-4.14.y	b5260801526c	d21c5d9d	.config	log	report	syz	C
ci2-linux-4-14	2019/08/07 03:07	linux-4.14.y	b19ffe6e7205	cdde7486	.config	log	report	syz	C
ci2-linux-4-14	2019/04/21 09:30	linux-4.14.y	68d7a45eec10	b0e8efcb	.config	log	report	syz	C
ci2-linux-4-14	2022/01/16 01:48	linux-4.14.y	4ba8e26127c3	723cfaf0	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/15 19:23	linux-4.14.y	4ba8e26127c3	723cfaf0	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/15 17:13	linux-4.14.y	4ba8e26127c3	723cfaf0	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/15 11:19	linux-4.14.y	4ba8e26127c3	723cfaf0	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/15 08:35	linux-4.14.y	4ba8e26127c3	723cfaf0	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/15 07:14	linux-4.14.y	4ba8e26127c3	723cfaf0	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/15 00:15	linux-4.14.y	4ba8e26127c3	53e00b45	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/14 21:51	linux-4.14.y	4ba8e26127c3	53e00b45	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/14 20:38	linux-4.14.y	4ba8e26127c3	53e00b45	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/14 19:00	linux-4.14.y	4ba8e26127c3	53e00b45	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/14 13:06	linux-4.14.y	4ba8e26127c3	b8d780ab	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/14 04:52	linux-4.14.y	4ba8e26127c3	b8d780ab	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/14 01:04	linux-4.14.y	4ba8e26127c3	b8d780ab	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/14 00:50	linux-4.14.y	4ba8e26127c3	b8d780ab	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/13 23:01	linux-4.14.y	4ba8e26127c3	b8d780ab	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/13 21:00	linux-4.14.y	4ba8e26127c3	b8d780ab	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/12 14:40	linux-4.14.y	4ba8e26127c3	44d1319a	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/12 06:41	linux-4.14.y	4ba8e26127c3	44d1319a	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/12 05:30	linux-4.14.y	4ba8e26127c3	44d1319a	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/12 03:30	linux-4.14.y	4ba8e26127c3	44d1319a	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/11 07:03	linux-4.14.y	bfdef05c8da4	ddb0ab8c	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/11 01:22	linux-4.14.y	bfdef05c8da4	ddb0ab8c	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/10 16:46	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/10 15:28	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/10 14:57	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/10 12:42	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/10 09:22	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/10 06:56	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/10 05:42	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/10 02:53	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/10 01:34	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/10 00:21	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 22:53	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 22:32	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 21:29	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 20:26	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 16:21	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 14:51	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 13:06	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 11:44	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 10:35	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 09:07	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 07:56	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 07:45	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 05:48	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 02:58	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/09 00:02	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2022/01/08 22:18	linux-4.14.y	bfdef05c8da4	2ca0d385	.config	log	report			info	WARNING in kill_block_super
ci2-linux-4-14	2021/01/17 13:12	linux-4.14.y	f79dc86058bc	813be542	.config	log	report			info
ci2-linux-4-14	2019/04/12 20:38	linux-4.14.y	1ec8f1f0bffe	4f421599	.config	log	report