BUG: spinlock bad magic in lock_sock

BUG: spinlock bad magic in lock_sock_nested
Status: upstream: reported on 2020/09/08 07:33
Reported-by: syzbot+eb47d1a545390e9fd5bf@syzkaller.appspotmail.com
First crash: 142d, last: 2d09h

Sample crash report:

BUG: spinlock bad magic on CPU#1, kworker/1:12/19426
general protection fault, probably for non-canonical address 0xdffffc34800000aa: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x000001a400000550-0x000001a400000557]
CPU: 1 PID: 19426 Comm: kworker/1:12 Not tainted 5.11.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events l2cap_chan_timeout
RIP: 0010:task_pid_nr include/linux/sched.h:1408 [inline]
RIP: 0010:spin_dump kernel/locking/spinlock_debug.c:65 [inline]
RIP: 0010:spin_bug.cold+0x71/0x9e kernel/locking/spinlock_debug.c:75
Code: 11 4c 89 e8 09 3e 00 00 5b 5d 41 5c 41 5d e9 7d f7 0d 00 48 8d bb 50 05 00 00 b8 ff ff 37 00 48 89 fa 48 c1 e0 2a 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 13 44 8b ab 50 05 00 00 48 81 c3
RSP: 0018:ffffc900099c7a88 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: 000001a400000004 RCX: 0000000000000000
RDX: 00000034800000aa RSI: ffffffff815b6b15 RDI: 000001a400000554
RBP: ffff88802524c088 R08: 0000000000000034 R09: 0000000000000000
R10: ffffffff815afcee R11: 0000000000000000 R12: 000000001a9d715c
R13: ffff88805b7cb780 R14: ffff88805e83d020 R15: 0000000000000005
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cd28000 CR3: 000000002553e000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 do_raw_spin_lock+0x216/0x2b0 kernel/locking/spinlock_debug.c:112
 spin_lock_bh include/linux/spinlock.h:359 [inline]
 lock_sock_nested+0x3b/0x110 net/core/sock.c:3049
 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/0x15f0 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Modules linked in:
---[ end trace fee54bad2476f7c1 ]---
RIP: 0010:task_pid_nr include/linux/sched.h:1408 [inline]
RIP: 0010:spin_dump kernel/locking/spinlock_debug.c:65 [inline]
RIP: 0010:spin_bug.cold+0x71/0x9e kernel/locking/spinlock_debug.c:75
Code: 11 4c 89 e8 09 3e 00 00 5b 5d 41 5c 41 5d e9 7d f7 0d 00 48 8d bb 50 05 00 00 b8 ff ff 37 00 48 89 fa 48 c1 e0 2a 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 13 44 8b ab 50 05 00 00 48 81 c3
RSP: 0018:ffffc900099c7a88 EFLAGS: 00010217
RAX: dffffc0000000000 RBX: 000001a400000004 RCX: 0000000000000000
RDX: 00000034800000aa RSI: ffffffff815b6b15 RDI: 000001a400000554
RBP: ffff88802524c088 R08: 0000000000000034 R09: 0000000000000000
R10: ffffffff815afcee R11: 0000000000000000 R12: 000000001a9d715c
R13: ffff88805b7cb780 R14: ffff88805e83d020 R15: 0000000000000005
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cd28000 CR3: 000000002553e000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600

Crashes (14):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Maintainers
ci-upstream-kasan-gce-root	2021/01/17 01:05	upstream	0da0a8a0	65a7a854	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-root	2020/12/01 13:34	upstream	b6505459	07bfe8a5	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-kasan-gce-selinux-root	2020/11/29 13:58	upstream	aae5ab85	a0092f9d	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2021/01/15 22:03	net	14662050	65a7a854	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/12/08 17:27	net	819f56ba	a7f7f4a4	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/11/19 16:29	net	6d9c8d15	0767f13f	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/11/12 21:38	net	52755b66	77a55c8e	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-this-kasan-gce	2020/11/08 08:15	net	4e0396c5	64069d48	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2021/01/13 19:11	net-next	f50e2f9f	a945f0a3	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2021/01/11 09:04	net-next	73b7a604	2c1f2513	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2021/01/10 15:51	net-next	73b7a604	2c1f2513	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/12/09 21:32	net-next	afae3cc2	c090b4da	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/11/08 23:02	net-next	bff6f1db	64069d48	.config	log	report	info	davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org
ci-upstream-net-kasan-gce	2020/08/29 18:44	net-next	0f091e43	d5a3ae1f	.config	log	report		davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org