general protection fault in prepare_to

general protection fault in prepare_to_wait
Status: upstream: reported C repro on 2019/01/03 10:44
Reported-by: syzbot+55f9d3e51d49e20b2ce5@syzkaller.appspotmail.com
First crash: 196d, last: 13d

Bisection: the bug happens on the oldest tested release (bisect log)
Tree: upstream
Crash: inconsistent lock state in nr_find_socket (log)
Repro: C syz .config

similar bugs (1):
Kernel	Title	Repro	Bisected	Count	Last	Reported	Patched	Status
linux-4.14	general protection fault in prepare_to_wait			1	32d	32d	0/1	upstream: reported on 2019/06/16 06:33

Sample crash report:

IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready
kasan: CONFIG_KASAN_INLINE enabled
8021q: adding VLAN 0 to HW filter on device batadv0
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7785 Comm: syz-executor295 Not tainted 5.0.0-rc6+ #72
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0x8df/0x4700 kernel/locking/lockdep.c:3215
Code: 28 00 00 00 0f 85 35 27 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 dc 27 00 00 49 81 3c 24 20 25 9a 89 0f 84 03 f8
RSP: 0018:ffff888094c6f970 EFLAGS: 00010006
kobject: 'vlan0' (00000000d30c60ff): kobject_add_internal: parent: 'mesh', set: '<NULL>'
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000018
RBP: ffff888094c6fb40 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000018
R13: 0000000000000001 R14: 0000000000000000 R15: ffff88808c0f00c0
FS:  00007f9abeeec700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
8021q: adding VLAN 0 to HW filter on device batadv0
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'vlan0' (00000000a54e32cc): kobject_add_internal: parent: 'mesh', set: '<NULL>'
CR2: 00000000004d0910 CR3: 00000000906d2000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
8021q: adding VLAN 0 to HW filter on device batadv0
Call Trace:
kobject: 'vlan0' (0000000016be0e34): kobject_add_internal: parent: 'mesh', set: '<NULL>'
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3841
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152
 prepare_to_wait+0x7c/0x300 kernel/sched/wait.c:230
 nr_accept+0x239/0x790 net/netrom/af_netrom.c:796
 __sys_accept4+0x350/0x6a0 net/socket.c:1588
 __do_sys_accept net/socket.c:1629 [inline]
 __se_sys_accept net/socket.c:1626 [inline]
 __x64_sys_accept+0x75/0xb0 net/socket.c:1626
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x449489
Code: e8 7c e6 ff ff 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 1b 05 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f9abeeebcc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002b
RAX: ffffffffffffffda RBX: 00000000006dfc68 RCX: 0000000000449489
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000006dfc60 R08: 00007f9abeeec700 R09: 0000000000000000
R10: 00007f9abeeec700 R11: 0000000000000246 R12: 00000000006dfc6c
R13: 00007ffe8979730f R14: 00007f9abeeec9c0 R15: 0000000000000002
Modules linked in:
---[ end trace 91ccd60fc619e2e6 ]---
RIP: 0010:__lock_acquire+0x8df/0x4700 kernel/locking/lockdep.c:3215
Code: 28 00 00 00 0f 85 35 27 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 dc 27 00 00 49 81 3c 24 20 25 9a 89 0f 84 03 f8
RSP: 0018:ffff888094c6f970 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000018
RBP: ffff888094c6fb40 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000018
R13: 0000000000000001 R14: 0000000000000000 R15: ffff88808c0f00c0
FS:  00007f9abeeec700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004d0910 CR3: 00000000906d2000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

All crashes (153):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci-upstream-kasan-gce-root	2019/02/15 05:42	upstream	23e93c9b	76dd003f	.config	log	report	syz	C	davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-kasan-gce-selinux-root	2019/02/15 15:18	upstream	cb5b020a	f6f233c0	.config	log	report	syz	C	davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-kasan-gce-smack-root	2019/04/24 09:02	upstream	7142eaa5	4d3d6a50	.config	log	report	syz		davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-kasan-gce-smack-root	2019/03/16 11:22	upstream	6c83d0d5	bab43553	.config	log	report	syz		davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-kasan-gce-smack-root	2019/02/15 05:23	upstream	23e93c9b	76dd003f	.config	log	report	syz		davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/02/08 12:05	net	ec7fd009	aa4feb03	.config	log	report	syz		davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/03/16 10:56	net-next	3b319ee2	bab43553	.config	log	report	syz		davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-linux-next-kasan-gce-root	2019/03/16 11:41	linux-next	cf08baa2	bab43553	.config	log	report	syz		davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-linux-next-kasan-gce-root	2019/02/08 12:28	linux-next	a46228f6	aa4feb03	.config	log	report	syz		davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-kasan-gce-selinux-root	2019/06/28 13:56	upstream	c84afab0	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-kasan-gce-selinux-root	2019/06/28 12:32	upstream	c84afab0	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-kasan-gce-root	2019/02/23 10:48	upstream	cb268d80	18107ce0	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/01/02 21:32	net	e8884027	f0491811	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/07/02 09:32	net	2e605463	cccc4302	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/07/02 07:33	net	2e605463	cccc4302	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/07/01 21:07	net	0e3183cd	907bf746	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/07/01 16:41	net	0e3183cd	907bf746	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/07/01 05:02	net	7b75e49d	699d6448	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/30 15:01	net	7b75e49d	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/30 07:08	net	8ec3ede5	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/29 19:00	net	75dad252	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/29 01:19	net	556e2f60	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/28 22:29	net	556e2f60	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/28 02:21	net	89ed5b51	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/27 21:47	net	89ed5b51	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/25 13:51	net	45d5cb13	82c13b6b	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/25 03:51	net	45d5cb13	82c13b6b	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/24 16:26	net	85f9aa75	472f0082	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/24 14:07	net	85f9aa75	472f0082	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/24 12:12	net	85f9aa75	472f0082	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/24 07:03	net	85f9aa75	472f0082	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/24 01:05	net	85f9aa75	472f0082	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/23 06:03	net	48620e34	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/22 23:29	net	48620e34	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/22 21:44	net	48620e34	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/22 09:27	net	48620e34	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/22 05:04	net	48620e34	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/22 03:09	net	48620e34	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/21 22:42	net	48620e34	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/21 18:20	net	48620e34	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/20 20:17	net	48620e34	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-this-kasan-gce	2019/06/19 12:29	net	d470e720	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/01/02 20:22	net-next	b71acb0e	f0491811	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/07/05 01:36	net-next	c4cde580	429efa16	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/30 18:29	net-next	f072218c	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/30 09:08	net-next	f072218c	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/29 08:51	net-next	ee7dd773	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/29 05:08	net-next	ee7dd773	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/28 20:21	net-next	a653f2f5	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/28 17:56	net-next	a653f2f5	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/28 06:50	net-next	a653f2f5	7509bf36	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/26 01:33	net-next	045df37e	0a8d1a96	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/24 18:05	net-next	92ad6325	472f0082	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/21 19:33	net-next	dca73a65	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/20 04:07	net-next	6c9bef32	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org
ci-upstream-net-kasan-gce	2019/06/19 16:54	net-next	39f58860	34bf9440	.config	log	report			davem@davemloft.net, linux-hams@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, ralf@linux-mips.org