WARNING in submit_bio

WARNING in submit_bio_checks
Status: upstream: reported C repro on 2020/07/11 05:34
Reported-by: syzbot+4c50ac32e5b10e4133e1@syzkaller.appspotmail.com
First crash: 238d, last: 9d15h

Cause bisection: introduced by (bisect log) :
commit 449325b52b7a6208f65ed67d3484fd7b7184477b
Author: Alexei Starovoitov <ast@kernel.org>
Date: Tue May 22 02:22:29 2018 +0000

umh: introduce fork_usermode_blob() helper

Crash: KASAN: use-after-free Write in call_usermodehelper_exec_work (log)
Repro: C syz .config

Patch testing requests:
Created	Duration	User	Patch	Repo	Result
2020/07/19 17:43	10m	bkkarthik@pesu.pes.edu	patch	https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master	report log
2020/07/19 17:40	10m	bkkarthik@pesu.pes.edu	patch	git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git master	report log
2020/07/19 14:28	3m	bkkarthik@pesu.pes.edu	patch	linux-next	error
2020/07/16 04:35	9m	bkkarthik@pesu.pes.edu	patch	linux-next	report log
2020/07/16 04:32	9m	bkkarthik@pesu.pes.edu	patch	linux-next	report log

Sample crash report:

------------[ cut here ]------------
Trying to write to read-only block-device sda1 (partno 1)
WARNING: CPU: 1 PID: 4838 at block/blk-core.c:705 bio_check_ro block/blk-core.c:705 [inline]
WARNING: CPU: 1 PID: 4838 at block/blk-core.c:705 blk_partition_remap block/blk-core.c:755 [inline]
WARNING: CPU: 1 PID: 4838 at block/blk-core.c:705 submit_bio_checks+0x1ba2/0x1fa0 block/blk-core.c:831
Modules linked in:
CPU: 1 PID: 4838 Comm: jbd2/sda1-8 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bio_check_ro block/blk-core.c:705 [inline]
RIP: 0010:blk_partition_remap block/blk-core.c:755 [inline]
RIP: 0010:submit_bio_checks+0x1ba2/0x1fa0 block/blk-core.c:831
Code: 41 0f b6 97 e0 05 00 00 48 8d 74 24 50 48 89 ef 89 14 24 e8 50 37 fe ff 8b 14 24 48 c7 c7 60 79 9c 89 48 89 c6 e8 88 53 10 05 <0f> 0b 48 8d 55 28 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6
RSP: 0018:ffffc900093a77a8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88801bed4340 RCX: 0000000000000000
RDX: ffff8880250c8280 RSI: ffffffff815b7455 RDI: fffff52001274ee7
RBP: ffff88801c3c41c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815b05fe R11: 0000000000000000 R12: 0000000000000000
R13: 1ffff92001274efb R14: ffff88801c3c41d0 R15: ffff888017b9f300
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5ea5c0e080 CR3: 000000001537f000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bio_noacct+0x81/0xe10 block/blk-core.c:1046
 submit_bio+0x263/0x5a0 block/blk-core.c:1131
 submit_bh_wbc+0x685/0x8e0 fs/buffer.c:3054
 jbd2_journal_commit_transaction+0x20d4/0x6b90 fs/jbd2/commit.c:775
 kjournald2+0x1d0/0x930 fs/jbd2/journal.c:213
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

Crashes (393):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-selinux-root	2021/02/13 16:43	upstream	c6d8570e	98682e5e	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/02/10 06:09	upstream	e0756cfc	2bd9619f	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce	2020/12/13 14:04	upstream	7b1b868e	bca53db9	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/08/23 00:50	upstream	c3d8f220	1da71ab0	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/08/23 00:16	upstream	c3d8f220	1da71ab0	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/08/23 00:09	upstream	c3d8f220	1da71ab0	.config	log	report	syz	C
ci-upstream-kasan-gce	2020/08/22 14:10	upstream	f873db9a	6436ce4b	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/08/20 09:53	upstream	7eac66d0	ed282a3a	.config	log	report	syz	C
ci-upstream-kasan-gce	2020/08/19 21:23	upstream	18445bf4	94b45706	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/08/19 06:15	upstream	18445bf4	e1c29030	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/08/17 14:57	upstream	2cc3c4b3	424dd8e7	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/08/16 07:27	upstream	4b6c093e	424dd8e7	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/08/14 23:01	upstream	a1d21081	424dd8e7	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/08/14 12:41	upstream	a1d21081	424dd8e7	.config	log	report	syz	C
ci-upstream-kasan-gce-386	2020/08/23 00:36	upstream	c3d8f220	1da71ab0	.config	log	report	syz	C
ci-upstream-kasan-gce-386	2020/08/20 02:29	upstream	18445bf4	94b45706	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/08/24 01:35	linux-next	494d311a	cef5ae68	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/08/21 10:54	linux-next	494d311a	6436ce4b	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/08/18 04:50	linux-next	0f1fa584	424dd8e7	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/07/07 05:50	linux-next	9e50b94b	51095195	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/08/19 12:54	upstream	18445bf4	e1c29030	.config	log	report	syz
ci-upstream-kasan-gce-selinux-root	2020/08/17 23:44	upstream	9123e3a7	424dd8e7	.config	log	report	syz
ci-upstream-kasan-gce-smack-root	2020/08/17 09:07	upstream	2cc3c4b3	424dd8e7	.config	log	report	syz
ci-upstream-linux-next-kasan-gce-root	2020/08/21 00:12	linux-next	605cbf3d	1d75fe45	.config	log	report	syz
ci-upstream-kasan-gce-root	2021/02/20 14:06	upstream	f40ddce8	3e5ed8b4	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/02/20 09:34	upstream	f40ddce8	f689d40a	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/02/18 12:06	upstream	f40ddce8	14052202	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/02/16 22:47	upstream	f40ddce8	98682e5e	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/02/16 00:13	upstream	f40ddce8	98682e5e	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/02/13 21:06	upstream	c6d8570e	98682e5e	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/02/09 00:24	upstream	e0756cfc	2bd9619f	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/02/05 18:19	upstream	dd86e7fa	23a562df	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/02/01 15:35	upstream	1048ba83	e6b95f32	.config	log	report			info	WARNING in submit_bio_checks
ci-qemu-upstream	2021/01/31 23:30	upstream	6642d600	fc9fd31e	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/01/30 09:20	upstream	0e9bcda5	fc9fd31e	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/01/27 12:41	upstream	2ab38c17	a0ebf917	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/01/24 10:54	upstream	e1ae4b0b	52e37319	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce	2021/01/18 22:05	upstream	19c329f6	63631df1	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/01/24 09:20	linux-next	bc085f8f	52e37319	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/01/17 05:00	upstream	0da0a8a0	65a7a854	.config	log	report			info
ci-upstream-kasan-gce-smack-root	2021/01/16 15:17	upstream	1d94330a	65a7a854	.config	log	report			info
ci-upstream-kasan-gce	2021/01/16 11:49	upstream	1d94330a	65a7a854	.config	log	report			info
ci-upstream-kasan-gce	2021/01/09 18:48	upstream	996e435f	2c1f2513	.config	log	report			info
ci-upstream-kasan-gce	2021/01/08 09:49	upstream	f5e6c330	c104d4a3	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2021/01/02 02:52	upstream	eda809ae	79264ae3	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/12/31 07:28	upstream	f6e1ea19	5cc121d6	.config	log	report			info
ci-upstream-kasan-gce	2020/12/24 09:18	upstream	58cf05f5	c2c1d1dd	.config	log	report			info
ci-upstream-kasan-gce-root	2020/12/16 10:07	upstream	d635a69d	f213e07e	.config	log	report			info
ci-upstream-kasan-gce-root	2020/12/14 06:54	upstream	6bff9bb8	b22a7ec3	.config	log	report			info
ci-upstream-kasan-gce-smack-root	2020/12/10 08:33	upstream	a68a0262	c090b4da	.config	log	report			info
ci-upstream-kasan-gce-smack-root	2020/12/09 00:35	upstream	7d8761ba	a7f7f4a4	.config	log	report			info
ci-upstream-kasan-gce-root	2020/12/05 14:43	upstream	b3298500	50503117	.config	log	report			info
ci-upstream-kasan-gce-smack-root	2020/12/01 13:08	upstream	b6505459	b3a34598	.config	log	report			info
ci-upstream-kasan-gce-smack-root	2020/12/01 09:57	upstream	b6505459	b3a34598	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/11/30 17:42	upstream	b6505459	78d50c1d	.config	log	report			info
ci-upstream-kasan-gce-root	2020/11/30 16:21	upstream	b6505459	78d50c1d	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/11/30 06:15	upstream	aae5ab85	a0092f9d	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/11/28 15:58	upstream	c84e1efa	76b4dcc7	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/11/28 14:41	upstream	c84e1efa	76b4dcc7	.config	log	report			info
ci-upstream-kasan-gce-root	2020/11/28 01:16	upstream	99c710c4	486f93ef	.config	log	report			info
ci-upstream-kasan-gce	2020/11/27 22:40	upstream	99c710c4	486f93ef	.config	log	report			info
ci-upstream-kasan-gce-root	2020/11/24 10:02	upstream	d5beb314	1ab681a4	.config	log	report			info
ci-upstream-kasan-gce-root	2020/11/23 00:01	upstream	a349e4c6	0d27f508	.config	log	report			info
ci-upstream-kasan-gce	2020/11/21 13:01	upstream	27bba9c5	68068804	.config	log	report			info
ci-upstream-kasan-gce-386	2020/12/16 10:16	upstream	d635a69d	f213e07e	.config	log	report			info
ci-upstream-kasan-gce-386	2020/12/09 01:59	upstream	7d8761ba	a7f7f4a4	.config	log	report			info
ci-qemu-upstream-386	2020/11/03 10:38	upstream	b7cbaf59	cba33199	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2021/01/15 12:03	linux-next	b3a3cbde	65a7a854	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2021/01/12 23:44	linux-next	df869cab	0cdd6185	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/12/02 23:50	linux-next	0eedceaf	8c9190ef	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/12/01 07:10	linux-next	c6b11acc	b3a34598	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/11/30 00:13	linux-next	6174f052	a0092f9d	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/11/24 22:17	linux-next	62918e6f	e34b696c	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/11/23 18:37	linux-next	62918e6f	878fb17a	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/11/22 17:51	linux-next	95065cb5	0d27f508	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/07/07 05:25	linux-next	9e50b94b	51095195	.config	log	report