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: 408d, last: 1h40m

similar bugs (1):
Kernel	Title	Repro	Bisected	Count	Last	Reported	Patched	Status
upstream	WARNING in kill_block_super	C		51	769d	787d	6/17	fixed on 2018/05/08 18:30

Sample crash report:

R10: 0000000000000000 R11: 0000000000000206 R12: 00000000006e0c3c
R13: 00007ffeda5c418f R14: 00007ff1d21599c0 R15: 0000000000000003
------------[ cut here ]------------
IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready
WARNING: CPU: 0 PID: 7652 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: 7652 Comm: syz-executor409 Not tainted 4.14.181-syzkaller #0
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 __warn.cold+0x2f/0x30 kernel/panic.c:547
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
 report_bug+0x20a/0x248 lib/bug.c:186
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
 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
batman_adv: batadv0: Interface activated: batadv_slave_1
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:964
RIP: 0010:kill_block_super+0xbe/0xe0 fs/super.c:1163
RSP: 0018:ffff88808b8a7c08 EFLAGS: 00010297
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
RAX: ffff8880a97ba000 RBX: 0000000000000000 RCX: 1ffff11011714f5c
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff888084b365a8
RBP: ffff8880a97d6880 R08: 0000000000000001 R09: 0000000000000001
R10: ffff8880a97ba8b0 R11: ffff8880a97ba000 R12: ffff888084b36200
R13: ffff8880a97d69c0 R14: dffffc0000000000 R15: ffffffff87b53380
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 sget_userns+0x9df/0xc30 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/0x3c0 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0x3c9/0x25e0 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: 0033:0x4506fa
RSP: 002b:00007ff1d2158ae8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff1d2158cc0 RCX: 00000000004506fa
RDX: 00007ff1d2158b30 RSI: 0000000020000000 RDI: 00007ff1d2158b50
RBP: 0000000000000006 R08: 00007ff1d2158b90 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000006e0c3c
R13: 00007ffeda5c418f R14: 00007ff1d21599c0 R15: 0000000000000003
CPU: 1 PID: 7679 Comm: syz-executor409 Not tainted 4.14.181-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+0x1b2/0x283 lib/dump_stack.c:58
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x154 lib/fault-inject.c:149
 should_failslab+0xd6/0x130 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 kmem_cache_alloc_trace+0x2b7/0x3f0 mm/slab.c:3616
 kmalloc include/linux/slab.h:488 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 superblock_alloc_security security/selinux/hooks.c:390 [inline]
 selinux_sb_alloc_security+0x41/0x210 security/selinux/hooks.c:2655
 security_sb_alloc+0x66/0xa0 security/security.c:358
 alloc_super fs/super.c:207 [inline]
 sget_userns+0x194/0xc30 fs/super.c:516
 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/0x3c0 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2549 [inline]
 do_mount+0x3c9/0x25e0 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: 0033:0x4506fa
RSP: 002b:00007ff1d2179ae8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff1d2179cc0 RCX: 00000000004506fa
RDX: 00007ff1d2179b30 RSI: 0000000020000000 RDI: 00007ff1d2179b50
RBP: 0000000000000006 R08: 00007ff1d2179b90 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000006e0c2c
R13: 00007ffeda5c418f R14: 00007ff1d217a9c0 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (5324):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci2-linux-4-14	2020/05/21 05:03	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/03/12 19:45	linux-4.14.y	12cd844a	d850e9d0	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/03/12 09:19	linux-4.14.y	12cd844a	d850e9d0	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/02/29 23:58	linux-4.14.y	78d697fc	c88c7b75	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/02/15 05:45	linux-4.14.y	98db2bf2	5d7b90f1	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/02/10 05:39	linux-4.14.y	e0f8b8a6	35f5e45e	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/02/03 22:26	linux-4.14.y	9fa690a2	93e5e335	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/02/03 06:16	linux-4.14.y	9fa690a2	93e5e335	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/01/30 01:07	linux-4.14.y	9fa690a2	5ed23f9a	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/01/27 07:09	linux-4.14.y	8bac5040	dd56146d	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/01/15 09:29	linux-4.14.y	c04fc6fa	fa12bd3c	.config	log	report	syz	C	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2019/12/28 19:02	linux-4.14.y	e1f7d50a	af6b8ef8	.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	2019/04/21 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	2020/05/24 23:27	linux-4.14.y	a41ba30d	ce7ca010	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 20:12	linux-4.14.y	a41ba30d	ce7ca010	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 19:02	linux-4.14.y	a41ba30d	ce7ca010	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 17:36	linux-4.14.y	a41ba30d	ce7ca010	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 16:32	linux-4.14.y	a41ba30d	ce7ca010	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 14:11	linux-4.14.y	a41ba30d	ce7ca010	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 11:59	linux-4.14.y	a41ba30d	96c92ad3	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 10:07	linux-4.14.y	a41ba30d	96c92ad3	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 08:22	linux-4.14.y	a41ba30d	96c92ad3	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 06:41	linux-4.14.y	a41ba30d	96c92ad3	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 04:42	linux-4.14.y	a41ba30d	96c92ad3	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/24 03:16	linux-4.14.y	a41ba30d	96c92ad3	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/23 21:01	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/23 18:07	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/23 14:45	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/23 12:57	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/23 11:25	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/23 08:53	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/23 07:49	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/23 05:30	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/23 04:10	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/23 00:07	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/22 22:43	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/22 21:13	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/22 02:11	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/21 10:04	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/21 02:43	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/21 01:34	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/21 00:16	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/20 22:08	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/20 20:18	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/20 13:20	linux-4.14.y	a41ba30d	1255f02a	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/20 02:46	linux-4.14.y	ab9dfda2	6d882fd2	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/19 19:19	linux-4.14.y	ab9dfda2	6d882fd2	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/19 17:39	linux-4.14.y	ab9dfda2	6d882fd2	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/19 16:28	linux-4.14.y	ab9dfda2	6d882fd2	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/19 13:40	linux-4.14.y	ab9dfda2	6d882fd2	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/19 07:28	linux-4.14.y	ab9dfda2	684d3606	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/19 05:32	linux-4.14.y	ab9dfda2	684d3606	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/19 02:59	linux-4.14.y	ab9dfda2	684d3606	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/19 01:41	linux-4.14.y	ab9dfda2	684d3606	.config	log	report			linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, viro@zeniv.linux.org.uk
ci2-linux-4-14	2020/05/18 20:16	linux-4.14.y	ab9dfda2	24d91142	.config	log	report			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