kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 2 PID: 1494 Comm: udevd Not tainted 4.14.0-rc7-next-20171103+ #10
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff88006d0163c0 task.stack: ffff88006d008000
RIP: 0010:__lock_acquire+0x227/0x4770 kernel/locking/lockdep.c:3388
RSP: 0018:ffff88006d00e8a8 EFLAGS: 00010082
RAX: ea08b6422daf1a91 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 1ffff100078799dc RSI: 0000000000000000 RDI: ffff88003c3ccee0
RBP: ffff88006d00edb0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff8744cca0 R12: ffff88006d0163c0
R13: 0000000000000000 R14: 0000000000000001 R15: ffff88003c3cced8
FS:  00007f39567f57a0(0000) GS:ffff88006de00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f39567fa000 CR3: 000000006cc00000 CR4: 00000000000026e0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:4004
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:158
 try_to_wake_up+0xd8/0x1850 kernel/sched/core.c:1985
 default_wake_function+0x30/0x50 kernel/sched/core.c:3625
 __wake_up_common+0x18e/0x780 kernel/sched/wait.c:97
 __wake_up_locked+0x11/0x20 kernel/sched/wait.c:158
 ep_poll_callback+0x3b2/0x1060 fs/eventpoll.c:1200
 __wake_up_common+0x18e/0x780 kernel/sched/wait.c:97
 __wake_up_common_lock+0x1b4/0x310 kernel/sched/wait.c:125
 __wake_up_sync_key+0x19/0x20 kernel/sched/wait.c:203
 sock_def_readable+0x1f1/0x5e0 net/core/sock.c:2625
 __netlink_sendskb+0x79/0xa0 net/netlink/af_netlink.c:1220
 netlink_sendskb net/netlink/af_netlink.c:1226 [inline]
 netlink_unicast+0x59a/0x6f0 net/netlink/af_netlink.c:1314
 netlink_sendmsg+0xa4a/0xe70 net/netlink/af_netlink.c:1862
 sock_sendmsg_nosec net/socket.c:632 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:642
 ___sys_sendmsg+0x75b/0x8a0 net/socket.c:2048
 __sys_sendmsg+0xe5/0x210 net/socket.c:2082
 SYSC_sendmsg net/socket.c:2093 [inline]
 SyS_sendmsg+0x2d/0x50 net/socket.c:2089
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x7f3955f09320
RSP: 002b:00007ffde9f0bd08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3955f09320
RDX: 0000000000000000 RSI: 00007ffde9f0bd50 RDI: 0000000000000004
RBP: 0000000000000086 R08: 00007f39567f57a0 R09: 0000000000000000
R10: 1999999999999999 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000184fa50 R14: 0000000000000006 R15: 0000000000000ae8
Code: ff ff e8 6d 3f ff ff 48 85 c0 44 8b 95 a8 fb ff ff 8b 8d a0 fb ff ff 44 8b 8d 98 fb ff ff 4c 8b 9d 90 fb ff ff 0f 84 23 0b 00 00 <f0> ff 80 38 01 00 00 49 8d bc 24 80 08 00 00 48 ba 00 00 00 00 
RIP: __lock_acquire+0x227/0x4770 kernel/locking/lockdep.c:3388 RSP: ffff88006d00e8a8
---[ end trace 06b53fd29889648e ]---