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: 216d, last: 14h42m

similar bugs (1):
Kernel	Title	Repro	Bisected	Count	Last	Reported	Patched	Status
upstream	WARNING in kill_block_super	C		51	577d	595d	6/14	fixed on 2018/05/08 18:30

Sample crash report:

RDX: 0000000020000140 RSI: 0000000020000100 RDI: 0000000020000080
RBP: 00007ffe21c8a880 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7131 at fs/super.c:1163 kill_block_super+0xc9/0xf0 fs/super.c:1163
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7131 Comm: syz-executor655 Not tainted 4.14.113 #3
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+0x138/0x19c lib/dump_stack.c:53
 panic+0x1f2/0x438 kernel/panic.c:182
 __warn.cold+0x2f/0x34 kernel/panic.c:546
 report_bug+0x216/0x254 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+0x1bb/0x310 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:944
RIP: 0010:kill_block_super+0xc9/0xf0 fs/super.c:1163
RSP: 0018:ffff8880901e7b98 EFLAGS: 00010297
RAX: ffff88808cdea4c0 RBX: 0000000000000000 RCX: 1ffff110119bd5a6
RDX: 0000000000000000 RSI: ffff88809acc95f8 RDI: ffff88821a337560
RBP: ffff8880901e7bb0 R08: ffff88808cdea4c0 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88808cdea4c0 R12: ffff88808aee2900
R13: ffff88821a3371c0 R14: ffff88808aee2900 R15: dffffc0000000000
 deactivate_locked_super+0x79/0xe0 fs/super.c:319
 sget_userns+0x9df/0xc30 fs/super.c:537
 sget+0xd6/0x120 fs/super.c:572
 mount_bdev+0xd5/0x370 fs/super.c:1107
 jfs_do_mount+0x35/0x40 fs/jfs/super.c:703
 mount_fs+0x9d/0x2a7 fs/super.c:1237
 vfs_kern_mount.part.0+0x5e/0x3d0 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0x417/0x27d0 fs/namespace.c:2879
 SYSC_mount fs/namespace.c:3095 [inline]
 SyS_mount+0xab/0x120 fs/namespace.c:3072
 do_syscall_64+0x1eb/0x630 arch/x86/entry/common.c:289
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x441139
RSP: 002b:00007ffe21c8a868 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441139
RDX: 0000000020000140 RSI: 0000000020000100 RDI: 0000000020000080
RBP: 00007ffe21c8a880 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff
R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (3324):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci2-linux-4-14	2019/04/21 09:30	linux-4.14.y	68d7a45e	b0e8efcb	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/03 23:22	linux-4.14.y	ddef1e8e	b35fad31	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/08/25 12:06	linux-4.14.y	b5260801	d21c5d9d	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/08/07 03:07	linux-4.14.y	b19ffe6e	cdde7486	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/04/12 20:38	linux-4.14.y	1ec8f1f0	4f421599	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/15 02:19	linux-4.14.y	775d01b6	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/14 23:36	linux-4.14.y	775d01b6	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/14 21:22	linux-4.14.y	775d01b6	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/14 13:16	linux-4.14.y	775d01b6	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/14 12:16	linux-4.14.y	775d01b6	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/14 09:26	linux-4.14.y	775d01b6	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/14 08:05	linux-4.14.y	775d01b6	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/14 06:51	linux-4.14.y	775d01b6	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/14 05:21	linux-4.14.y	775d01b6	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/13 21:27	linux-4.14.y	775d01b6	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/12 23:58	linux-4.14.y	4762bcd4	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/12 22:33	linux-4.14.y	4762bcd4	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/12 15:15	linux-4.14.y	4762bcd4	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/12 12:36	linux-4.14.y	4762bcd4	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/12 11:32	linux-4.14.y	4762bcd4	048f2d49	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/12 07:20	linux-4.14.y	4762bcd4	377d77fa	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/12 02:17	linux-4.14.y	4762bcd4	377d77fa	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/12 00:37	linux-4.14.y	4762bcd4	377d77fa	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 23:21	linux-4.14.y	4762bcd4	377d77fa	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 22:12	linux-4.14.y	4762bcd4	377d77fa	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 20:15	linux-4.14.y	4762bcd4	377d77fa	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 20:01	linux-4.14.y	4762bcd4	377d77fa	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 18:45	linux-4.14.y	4762bcd4	377d77fa	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 17:11	linux-4.14.y	4762bcd4	377d77fa	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 12:37	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 10:41	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 07:50	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 03:42	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/11 02:23	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 23:00	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 21:08	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 19:14	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 18:54	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 16:53	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 15:52	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 14:12	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 12:47	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 09:52	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 08:02	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 06:50	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/11/10 05:22	linux-4.14.y	c9fda4f2	dc438b91	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk