BUG: unable to handle kernel paging request in lock_sock

BUG: unable to handle kernel paging request in lock_sock_nested
Status: upstream: reported on 2020/08/05 16:09
Reported-by: syzbot+3ea58ce4ad976e46ca65@syzkaller.appspotmail.com
First crash: 356d, last: 14d

similar bugs (8):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	BUG: unable to handle kernel paging request in lock_sock_nested				4	75d	194d	0/1	upstream: reported on 2021/01/15 05:46
linux-4.19	KASAN: slab-out-of-bounds Read in lock_sock_nested				6	74d	257d	0/1	upstream: reported on 2020/11/12 16:53
linux-4.19	KASAN: wild-memory-access Write in lock_sock_nested				2	180d	249d	0/1	auto-closed as invalid on 2021/05/28 14:35
linux-4.14	general protection fault in lock_sock_nested				4	81d	299d	0/1	upstream: reported on 2020/10/01 19:05
linux-4.19	KASAN: use-after-free Read in lock_sock_nested	C			283	8h46m	732d	0/1	upstream: reported C repro on 2019/07/26 21:27
linux-4.14	KASAN: use-after-free Read in lock_sock_nested	C		inconclusive	317	35d	826d	0/1	upstream: reported C repro on 2019/04/24 06:28
upstream	KASAN: use-after-free Read in lock_sock_nested	C	inconclusive	done	1620	5h55m	938d	0/22	upstream: reported C repro on 2019/01/02 10:41
upstream	KASAN: slab-out-of-bounds Read in lock_sock_nested	syz	unreliable		22	14d	350d	0/22	upstream: reported syz repro on 2020/08/11 16:59

Sample crash report:

BUG: unable to handle page fault for address: fffffbfff358bb27
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 23ffe9067 P4D 23ffe9067 PUD 23ffe8067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events l2cap_chan_timeout
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:177 [inline]
RIP: 0010:kasan_check_range+0xdb/0x180 mm/kasan/generic.c:186
Code: 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 <80> 38 00 74 f2 eb d4 41 bc 08 00 00 00 48 89 ea 45 29 dc 4d 8d 1c
RSP: 0018:ffffc90000ca78e8 EFLAGS: 00010086
RAX: fffffbfff358bb27 RBX: fffffbfff358bb28 RCX: ffffffff8159c993
RDX: fffffbfff358bb28 RSI: 0000000000000008 RDI: ffffffff9ac5d938
RBP: fffffbfff358bb27 R08: 0000000000000000 R09: ffffffff9ac5d93f
R10: fffffbfff358bb27 R11: 0000000000000000 R12: ffff888011d28000
R13: ffff888011d28aba R14: ffff888011d289f8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff358bb27 CR3: 00000000909e6000 CR4: 0000000000350ef0
Call Trace:
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
 __lock_acquire+0xf53/0x5230 kernel/locking/lockdep.c:4872
 lock_acquire kernel/locking/lockdep.c:5512 [inline]
 lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5477
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175
 spin_lock_bh include/linux/spinlock.h:359 [inline]
 lock_sock_nested+0x40/0x120 net/core/sock.c:3057
 l2cap_sock_teardown_cb+0xa1/0x660 net/bluetooth/l2cap_sock.c:1520
 l2cap_chan_del+0xbc/0xa80 net/bluetooth/l2cap_core.c:618
 l2cap_chan_close+0x1bc/0xaf0 net/bluetooth/l2cap_core.c:823
 l2cap_chan_timeout+0x17e/0x2f0 net/bluetooth/l2cap_core.c:436
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
CR2: fffffbfff358bb27
---[ end trace 2e46063f262900cc ]---
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:177 [inline]
RIP: 0010:kasan_check_range+0xdb/0x180 mm/kasan/generic.c:186
Code: 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 <80> 38 00 74 f2 eb d4 41 bc 08 00 00 00 48 89 ea 45 29 dc 4d 8d 1c
RSP: 0018:ffffc90000ca78e8 EFLAGS: 00010086
RAX: fffffbfff358bb27 RBX: fffffbfff358bb28 RCX: ffffffff8159c993
RDX: fffffbfff358bb28 RSI: 0000000000000008 RDI: ffffffff9ac5d938
RBP: fffffbfff358bb27 R08: 0000000000000000 R09: ffffffff9ac5d93f
R10: fffffbfff358bb27 R11: 0000000000000000 R12: ffff888011d28000
R13: ffff888011d28aba R14: ffff888011d289f8 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffbfff358bb27 CR3: 00000000909e6000 CR4: 0000000000350ef0

Crashes (38):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci-upstream-kasan-gce-root	2021/05/02 01:17	upstream	d2b6f8a17919	77e2b668	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-kasan-gce-smack-root	2021/04/20 22:24	upstream	7af08140979a	c0ced557	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-kasan-gce-selinux-root	2021/01/31 14:19	upstream	6642d600b541	fc9fd31e	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-qemu-upstream-386	2021/03/02 23:08	upstream	7a7fd0de4a98	e5b64d68	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-qemu-upstream-386	2021/01/30 09:10	upstream	0e9bcda5d286	fc9fd31e	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-this-kasan-gce	2021/04/30 17:56	net	bbd6f0a94813	77e2b668	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-this-kasan-gce	2021/03/07 13:28	net	9270bbe258c8	75506d9c	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-this-kasan-gce	2021/03/01 20:30	net	447621e373bd	183afb6c	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-kasan-gce	2021/06/07 00:47	net-next	1a42624aecba	500c2339	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-kasan-gce	2021/05/15 20:41	net-next	77091933e453	93f844de	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-kasan-gce	2021/04/04 16:39	net-next	428e68e1a85a	6a81331a	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-kasan-gce	2021/04/03 01:11	net-next	bd78980be1a6	6a81331a	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-kasan-gce	2021/04/02 13:58	net-next	bd78980be1a6	6a81331a	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-kasan-gce	2021/03/22 17:04	net-next	a1e6f641e307	bea32f74	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-kasan-gce	2021/02/19 21:29	net-next	38b5133ad607	f689d40a	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-net-kasan-gce	2021/02/04 04:47	net-next	32d1bbb1d609	624dad51	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-linux-next-kasan-gce-root	2021/01/27 23:32	linux-next	bc085f8fc88f	eefc07f2	.config	log	report	info	BUG: unable to handle kernel paging request in lock_sock_nested
ci-upstream-kasan-gce-smack-root	2021/07/13 23:42	upstream	40226a3d96ef	fa0594c3	.config	log	report	info	UBSAN: array-index-out-of-bounds in lock_sock_nested
ci-upstream-kasan-gce-selinux-root	2021/07/06 13:25	upstream	3dbdb38e2869	6c4484eb	.config	log	report	info	UBSAN: array-index-out-of-bounds in lock_sock_nested
ci-upstream-kasan-gce-root	2020/08/15 06:34	upstream	b923f1247b72	424dd8e7	.config	log	report
ci-upstream-kasan-gce-root	2020/08/13 00:08	upstream	fb893de323e2	bc15f7db	.config	log	report
ci-upstream-net-this-kasan-gce	2020/09/21 12:18	net	e1b81391421b	9e1fa68e	.config	log	report	info
ci-upstream-net-this-kasan-gce	2020/09/07 12:00	net	4ddcaf1ebb5e	abf9ba4f	.config	log	report
ci-upstream-net-this-kasan-gce	2020/08/16 11:22	net	4ca0d9ac3fd8	424dd8e7	.config	log	report
ci-upstream-net-this-kasan-gce	2020/08/16 04:04	net	4ca0d9ac3fd8	424dd8e7	.config	log	report
ci-upstream-net-this-kasan-gce	2020/08/05 15:20	net	ac3a0c847296	b7129355	.config	log	report
ci-upstream-net-kasan-gce	2020/12/29 12:18	net-next	3db1a3fa9880	8259d56c	.config	log	report	info
ci-upstream-net-kasan-gce	2020/11/12 21:06	net-next	e545f8657393	77a55c8e	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/29 22:29	net-next	280095713ce2	5abc3f1a	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/22 19:41	net-next	92ec804f3dbf	3e8f6c27	.config	log	report	info
ci-upstream-net-kasan-gce	2020/09/11 07:39	net-next	9984c0bb22dc	adfb8b4e	.config	log	report
ci-upstream-net-kasan-gce	2020/09/02 07:41	net-next	dc1a9bf2c816	abf9ba4f	.config	log	report
ci-upstream-net-kasan-gce	2020/09/01 20:10	net-next	10eb46679460	d5a3ae1f	.config	log	report
ci-upstream-net-kasan-gce	2020/08/16 22:40	net-next	7fca4dee610d	424dd8e7	.config	log	report
ci-upstream-net-kasan-gce	2020/08/16 10:50	net-next	7fca4dee610d	424dd8e7	.config	log	report
ci-upstream-net-kasan-gce	2020/08/09 21:21	net-next	bfdd5aaa54b0	70301872	.config	log	report
ci-upstream-net-kasan-gce	2020/08/08 12:56	net-next	bfdd5aaa54b0	ff51e522	.config	log	report
ci-upstream-kmsan-gce-386	2021/03/21 03:51	https://github.com/google/kmsan.git master	29ad81a1074a	17810eae	.config	log	report	info	KMSAN: uninit-value in lock_sock_nested