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: 390d, last: 3h05m

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:

loop0: detected capacity change from 0 to 2442
------------[ cut here ]------------
Trying to write to read-only block-device loop0 (partno 0)
WARNING: CPU: 1 PID: 8497 at block/blk-core.c:701 bio_check_ro block/blk-core.c:701 [inline]
WARNING: CPU: 1 PID: 8497 at block/blk-core.c:701 submit_bio_checks+0x160c/0x1a80 block/blk-core.c:814
Modules linked in:
CPU: 1 PID: 8497 Comm: syz-executor979 Tainted: G        W         5.14.0-rc1-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:701 [inline]
RIP: 0010:submit_bio_checks+0x160c/0x1a80 block/blk-core.c:814
Code: 00 00 45 0f b6 a4 24 50 05 00 00 48 8d 74 24 60 48 89 ef e8 76 47 fe ff 48 c7 c7 80 80 e1 89 48 89 c6 44 89 e2 e8 a5 a6 27 05 <0f> 0b e9 86 f3 ff ff e8 38 dd b5 fd e8 a3 e5 69 05 31 ff 89 c3 89
RSP: 0018:ffffc9000178f238 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff888146770000 RCX: 0000000000000000
RDX: ffff88801b183880 RSI: ffffffff815d6855 RDI: fffff520002f1e39
RBP: ffff888026f5b8c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815d068e R11: 0000000000000000 R12: 0000000000000000
R13: ffff888026f5b8d0 R14: ffff888019d7c200 R15: ffff888146770574
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc1b5041000 CR3: 0000000026d93000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bio_noacct+0x81/0xf20 block/blk-core.c:1029
 submit_bio+0x1ea/0x470 block/blk-core.c:1106
 submit_bh_wbc+0x5eb/0x7f0 fs/buffer.c:3050
 __block_write_full_page+0x879/0x1360 fs/buffer.c:1805
 block_write_full_page+0x14d/0x190 fs/buffer.c:2976
 __writepage+0x60/0x180 mm/page-writeback.c:2314
 write_cache_pages+0x754/0x1190 mm/page-writeback.c:2249
 generic_writepages mm/page-writeback.c:2340 [inline]
 generic_writepages+0xe2/0x150 mm/page-writeback.c:2329
 do_writepages+0xec/0x290 mm/page-writeback.c:2355
 __filemap_fdatawrite_range+0x2a5/0x390 mm/filemap.c:413
 filemap_write_and_wait_range mm/filemap.c:686 [inline]
 filemap_write_and_wait_range+0x65/0x100 mm/filemap.c:680
 filemap_write_and_wait include/linux/fs.h:2897 [inline]
 __sync_blockdev fs/block_dev.c:526 [inline]
 sync_blockdev fs/block_dev.c:535 [inline]
 blkdev_put+0x7ff/0xae0 fs/block_dev.c:1530
 blkdev_close+0x8c/0xb0 fs/block_dev.c:1584
 __fput+0x288/0x920 fs/file_table.c:280
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xbd4/0x2a60 kernel/exit.c:825
 do_group_exit+0x125/0x310 kernel/exit.c:922
 get_signal+0x47f/0x2160 kernel/signal.c:2808
 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:209
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x44bb59
Code: Unable to access opcode bytes at RIP 0x44bb2f.
RSP: 002b:00007fd11d936308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00000000004cc4e8 RCX: 000000000044bb59
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cc4e8
RBP: 00000000004cc4e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cc4ec
R13: 65732f636f72702f R14: 6f6f6c2f7665642f R15: 0000000000022000

Crashes (921):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce	2021/07/15 20:35	upstream	8096acd7442e	b9a2f64e	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/15 10:04	upstream	8096acd7442e	b9a2f64e	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce	2021/07/11 11:58	upstream	3dbdb38e2869	8f5a7b8c	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/07/02 10:58	upstream	e058a84bfddc	658ebc66	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/06/25 21:19	upstream	44db63d1ad8d	ae6bf8dd	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/06/25 00:50	upstream	4a09d388f2ab	0edbbe31	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/06/20 06:20	upstream	9ed13a17e38e	aba2b2fb	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/05/17 15:26	upstream	d07f6ca923ea	a2eb125d	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/05/09 21:54	upstream	b741596468b0	bc5434be	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/04/28 12:58	upstream	57fa2369ab17	805b5003	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/04/07 20:23	upstream	2d743660786e	6a81331a	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/04/07 12:17	upstream	2d743660786e	6a81331a	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/04/07 09:44	upstream	2d743660786e	6a81331a	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/03/30 08:17	upstream	1e43c377a79f	6a81331a	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/03/29 07:42	upstream	81b1d39fd39a	a8529b82	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/03/02 23:18	upstream	7a7fd0de4a98	92ead296	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/02/13 16:43	upstream	c6d8570e4d64	98682e5e	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/02/10 06:09	upstream	e0756cfc7d7c	2bd9619f	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/07/27 14:52	linux-next	2265c5286967	fd511809	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/06/11 07:39	linux-next	a1f92694393a	1ba81399	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/05/11 14:18	linux-next	4bf27b1f7330	ca873091	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/05/05 09:06	linux-next	9a9aa07ae18b	06c27ff5	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/04/12 08:03	linux-next	e99d8a849517	bfeda1b1	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/03/29 22:29	linux-next	931294922e65	6a81331a	.config	log	report	syz	C		WARNING in submit_bio_checks
ci-upstream-kasan-gce	2020/12/13 14:04	upstream	7b1b868e1d91	bca53db9	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/08/23 00:50	upstream	c3d8f220d012	1da71ab0	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/08/23 00:16	upstream	c3d8f220d012	1da71ab0	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/08/23 00:09	upstream	c3d8f220d012	1da71ab0	.config	log	report	syz	C
ci-upstream-kasan-gce	2020/08/22 14:10	upstream	f873db9acd3c	6436ce4b	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/08/20 09:53	upstream	7eac66d0456f	ed282a3a	.config	log	report	syz	C
ci-upstream-kasan-gce	2020/08/19 21:23	upstream	18445bf405cb	94b45706	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/08/19 06:15	upstream	18445bf405cb	e1c29030	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/08/17 14:57	upstream	2cc3c4b3c2e9	424dd8e7	.config	log	report	syz	C
ci-upstream-kasan-gce-386	2020/08/23 00:36	upstream	c3d8f220d012	1da71ab0	.config	log	report	syz	C
ci-upstream-kasan-gce-386	2020/08/20 02:29	upstream	18445bf405cb	94b45706	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/08/24 01:35	linux-next	494d311a82bb	cef5ae68	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/08/21 10:54	linux-next	494d311a82bb	6436ce4b	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/08/18 04:50	linux-next	0f1fa5848ab3	424dd8e7	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/07/07 05:50	linux-next	9e50b94b3eb0	51095195	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/08/19 12:54	upstream	18445bf405cb	e1c29030	.config	log	report	syz
ci-upstream-kasan-gce-selinux-root	2020/08/17 23:44	upstream	9123e3a74ec7	424dd8e7	.config	log	report	syz
ci-upstream-linux-next-kasan-gce-root	2020/08/21 00:12	linux-next	605cbf3d5f20	1d75fe45	.config	log	report	syz
ci-upstream-kasan-gce-smack-root	2021/08/01 08:25	upstream	f3438b4c4e69	6c236867	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/08/01 04:39	upstream	f3438b4c4e69	6c236867	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce	2021/07/31 11:33	upstream	c7d102232649	6c236867	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/31 02:23	upstream	764a5bc89b12	6c236867	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/07/30 21:50	upstream	764a5bc89b12	6c236867	.config	log	report			info	WARNING in submit_bio_checks
ci-qemu-upstream	2021/07/30 17:04	upstream	764a5bc89b12	6c236867	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce	2021/07/30 01:13	upstream	7e96bf476270	c585c7b0	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce	2021/07/29 22:06	upstream	7e96bf476270	b44001ce	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/07/29 14:04	upstream	4010a528219e	b44001ce	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/29 09:55	upstream	4010a528219e	9a4781d4	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/07/29 05:12	upstream	4010a528219e	9a4781d4	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/07/28 10:34	upstream	7d549995d4e0	17d6ab15	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/28 08:54	upstream	7d549995d4e0	17d6ab15	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/07/26 20:49	upstream	ff1176468d36	fd511809	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/07/26 18:38	upstream	ff1176468d36	fd511809	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/26 18:35	upstream	ff1176468d36	fd511809	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/07/26 05:42	upstream	d8079fac1681	4d1b57d4	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/26 04:06	upstream	d8079fac1681	4d1b57d4	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/07/26 00:31	upstream	d8079fac1681	4d1b57d4	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/24 02:48	upstream	8baef6386baa	bc5f1d88	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce	2021/07/22 04:47	upstream	7b6ae471e541	29c3f20f	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce	2021/07/21 09:29	upstream	8cae8cd89f05	1b201b48	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/20 17:31	upstream	8cae8cd89f05	1b201b48	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/19 21:12	upstream	2734d6c1b1a0	e6a17580	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/17 08:41	upstream	872f8edeb6bd	f115ae98	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/07/16 01:27	upstream	dd9c7df94c1b	f115ae98	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/07/15 08:04	upstream	8096acd7442e	b9a2f64e	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/14 05:47	upstream	40226a3d96ef	484502bd	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/07/13 19:07	upstream	7fef2edf7cc7	fa0594c3	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce	2021/07/13 18:55	upstream	7fef2edf7cc7	fa0594c3	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/12 19:45	upstream	e73f0f0ee754	f415556d	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/12 07:19	upstream	e73f0f0ee754	a4869c92	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/11 20:36	upstream	98f7fdced2e0	8f5a7b8c	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-root	2021/07/11 09:57	upstream	3dbdb38e2869	8f5a7b8c	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-smack-root	2021/07/11 07:20	upstream	3dbdb38e2869	8f5a7b8c	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-386	2021/07/28 14:18	upstream	7d549995d4e0	17d6ab15	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-386	2021/07/26 09:27	upstream	ff1176468d36	fd511809	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-386	2021/07/25 02:28	upstream	7ffca2bb9d8b	4d1b57d4	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-386	2021/07/22 02:28	upstream	7b6ae471e541	29c3f20f	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-386	2021/07/21 00:48	upstream	8cae8cd89f05	1b201b48	.config	log	report			info	WARNING in submit_bio_checks
ci-qemu-upstream-386	2021/07/16 21:10	upstream	d936eb238744	f115ae98	.config	log	report			info	WARNING in submit_bio_checks
ci-qemu2-arm64-compat	2021/07/12 00:26	upstream	de5540965853	8f5a7b8c	.config	log	report			info	WARNING in submit_bio_checks
ci-qemu2-arm32	2021/07/06 00:46	upstream	bf152b0b41dc	55aa55c2	.config	log	report			info	WARNING in submit_bio_checks
ci-qemu2-arm64-mte	2021/04/11 05:35	upstream	95c7b0755187	bfeda1b1	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/07/23 00:00	linux-next	7468cbf5c917	302e51de	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/07/22 18:44	linux-next	7468cbf5c917	302e51de	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/07/18 08:25	linux-next	c1a6d08348fc	f115ae98	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/07/16 02:45	linux-next	c1a6d08348fc	f115ae98	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/07/14 16:41	linux-next	c0d438dbc0b7	94e0b707	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/07/13 16:14	linux-next	8f0df15bafc1	fa0594c3	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-linux-next-kasan-gce-root	2021/07/11 03:21	linux-next	92510a7fd93c	8f5a7b8c	.config	log	report			info	WARNING in submit_bio_checks
ci-qemu2-riscv64	2021/06/05 12:45	git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes	18a3c5f7abfd	500c2339	.config	log	report			info	WARNING in submit_bio_checks
ci-upstream-kasan-gce-selinux-root	2021/01/17 05:00	upstream	0da0a8a0a0e1	65a7a854	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/07/07 05:25	linux-next	9e50b94b3eb0	51095195	.config	log	report