WARNING in __kernel

WARNING in __kernel_read (2)
Status: upstream: reported C repro on 2020/09/26 02:58
Reported-by: syzbot+51177e4144d764827c45@syzkaller.appspotmail.com
First crash: 437d, last: 45d

Cause bisection: failed (bisect log)

similar bugs (1):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	WARNING in __kernel_read	C	done		60	449d	508d	17/22	fixed on 2020/09/16 22:51

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 0 PID: 7028 at fs/read_write.c:440 __kernel_read+0x80e/0xa10 fs/read_write.c:440
Modules linked in:
CPU: 0 PID: 7028 Comm: syz-executor458 Not tainted 5.9.0-rc5-next-20200921-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__kernel_read+0x80e/0xa10 fs/read_write.c:440
Code: 8a e8 c6 97 12 02 31 ff 89 c3 89 c6 e8 2b ac b3 ff 85 db 0f 85 6e 3b 55 06 49 c7 c5 ea ff ff ff e9 bd fd ff ff e8 b2 af b3 ff <0f> 0b 49 c7 c5 ea ff ff ff e9 aa fd ff ff e8 9f af b3 ff 48 89 ea
RSP: 0018:ffffc90006027b38 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff81c1715b
RDX: ffff888091eba480 RSI: ffffffff81c1787e RDI: 0000000000000005
RBP: 000000000008801c R08: 0000000000000001 R09: ffff888091ebad88
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a16710c0
R13: 0000000000000001 R14: ffffc90006027d08 R15: ffff8880a1671144
FS:  00007efcd60f1700(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 00000000a2dc5000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kernel_read+0x52/0x70 fs/read_write.c:471
 kernel_read_file fs/exec.c:989 [inline]
 kernel_read_file+0x2e5/0x620 fs/exec.c:952
 kernel_read_file_from_fd+0x56/0xa0 fs/exec.c:1076
 __do_sys_finit_module+0xe6/0x190 kernel/module.c:4066
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x44a639
Code: e8 bc b4 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 4b cc fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007efcd60f0db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 00000000006dbc68 RCX: 000000000044a639
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000006dbc60 R08: 00007efcd60f1700 R09: 0000000000000000
R10: 00007efcd60f1700 R11: 0000000000000246 R12: 00000000006dbc6c
R13: 00007ffd3d8928ef R14: 00007efcd60f19c0 R15: 0000000000000001

Crashes (292):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-linux-next-kasan-gce-root	2020/09/22 02:56	linux-next	b10b8ad86211	9e1fa68e	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2021/10/19 03:12	upstream	519d81956ee2	24dc29db	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/10/16 22:39	upstream	304040fb4909	0c5d9412	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/10/16 08:15	upstream	8fe31e0995f0	0c5d9412	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-smack-root	2021/10/16 06:02	upstream	8fe31e0995f0	0c5d9412	.config	log	report			info	WARNING in __kernel_read
ci-qemu-upstream	2021/10/16 03:41	upstream	8fe31e0995f0	0c5d9412	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/10/14 10:57	upstream	348949d9a444	5462d470	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/10/14 10:54	upstream	348949d9a444	5462d470	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/10/14 02:10	upstream	348949d9a444	5462d470	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/10/11 16:42	upstream	64570fbc14f8	838e7e2c	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-smack-root	2021/10/09 00:36	upstream	741668ef7832	efe0f24d	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-smack-root	2021/10/03 12:06	upstream	7b66f4393ad4	db0f5787	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/10/03 10:30	upstream	7b66f4393ad4	db0f5787	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/09/20 04:02	upstream	20621d2f27a0	70b76c1d	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-smack-root	2021/09/11 23:26	upstream	c605c39677b9	5ae8508a	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/09/11 18:08	upstream	926de8c4326c	5ae8508a	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/09/10 17:26	upstream	bf9f243f23e6	5ae8508a	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/09/10 16:01	upstream	bf9f243f23e6	5ae8508a	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-smack-root	2021/09/10 08:59	upstream	bf9f243f23e6	e2776ee4	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-smack-root	2021/09/01 05:17	upstream	b91db6a0b52e	7eb7e152	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/08/31 02:21	upstream	7d2a07b76933	8f58a0ef	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/08/26 15:21	upstream	73f3af7b4611	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/08/26 13:49	upstream	73f3af7b4611	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/08/25 11:53	upstream	6e764bcd1cf7	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-smack-root	2021/08/24 15:35	upstream	d5ae8d7f85b7	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/08/23 20:52	upstream	e22ce8eb631b	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/08/22 22:04	upstream	1bdc3d5be7e1	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/08/22 19:04	upstream	9ff50bf2f2ff	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/08/22 12:37	upstream	9ff50bf2f2ff	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/08/19 02:51	upstream	614cb2751d31	a2fe1cb5	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/08/18 17:36	upstream	614cb2751d31	a2fe1cb5	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/08/17 08:44	upstream	a2824f19e606	33c26cb7	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/08/16 15:34	upstream	7c60610d4767	33c26cb7	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-smack-root	2021/08/16 15:32	upstream	7c60610d4767	33c26cb7	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/08/16 14:26	upstream	7c60610d4767	33c26cb7	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-smack-root	2021/08/16 00:54	upstream	0aa78d17099b	2489ab88	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/08/11 10:25	upstream	761c6d7ec820	6972b106	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/08/11 07:34	upstream	9e723c5380c6	6972b106	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-root	2021/08/06 22:39	upstream	902e7f373fff	f9e341e3	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2021/08/06 15:44	upstream	902e7f373fff	f9e341e3	.config	log	report			info	WARNING in __kernel_read
ci-qemu-upstream-386	2021/06/14 16:35	upstream	009c9aa5be65	1ba81399	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/10/08 22:44	linux-next	683f29b781ae	efe0f24d	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/10/08 22:44	linux-next	683f29b781ae	efe0f24d	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/10/03 09:07	linux-next	a25006a77348	db0f5787	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/09/20 01:41	linux-next	9004fd387338	70b76c1d	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/09/08 20:28	linux-next	999569d59a0a	e2776ee4	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/08/23 20:51	linux-next	46debfec12b4	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/08/22 13:38	linux-next	86ed57fd8c93	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/08/21 06:25	linux-next	86ed57fd8c93	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/08/19 21:42	linux-next	33e65b1f975c	b599f2fc	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/08/16 18:36	linux-next	b9011c7e671d	33c26cb7	.config	log	report			info	WARNING in __kernel_read
ci-upstream-linux-next-kasan-gce-root	2021/08/06 18:46	linux-next	8d4b477da1a8	f9e341e3	.config	log	report			info	WARNING in __kernel_read
ci-upstream-kasan-gce-selinux-root	2020/12/13 06:08	upstream	7b1b868e1d91	bca53db9	.config	log	report			info