IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
audit: type=1400 audit(1520827044.807:10): avc:  denied  { sys_chroot } for  pid=4232 comm="syzkaller760148" capability=18  scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1
kasan: CONFIG_KASAN_INLINE enabled
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: 1 PID: 4392 Comm: syzkaller760148 Not tainted 4.16.0-rc4+ #350
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:perf_trace_lock_acquire+0xc0/0x980 include/trace/events/lock.h:13
RSP: 0018:ffff8801ad5b7540 EFLAGS: 00010002
RAX: 0000000000000049 RBX: 1ffff10035ab6eb2 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000230 RDI: ffffffff86f2c1e0
RBP: ffff8801ad5b7718 R08: 0000000000000000 R09: 0000000000000230
R10: dffffc0000000000 R11: ffffffff815613c0 R12: ffff8801ad5b76f0
R13: 0000000000000000 R14: ffffffff86f2c1e0 R15: 0000000000000001
FS:  00007f97606cf700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f97606cedb8 CR3: 00000001b121e002 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x394/0x580 kernel/locking/lockdep.c:3919
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
 cma_exch drivers/infiniband/core/cma.c:461 [inline]
 rdma_destroy_id+0xa9/0xda0 drivers/infiniband/core/cma.c:1660
 ucma_destroy_id+0x2e9/0x4c0 drivers/infiniband/core/ucma.c:606
 ucma_write+0x2d6/0x3d0 drivers/infiniband/core/ucma.c:1633
 __vfs_write+0xef/0x970 fs/read_write.c:480
 vfs_write+0x189/0x510 fs/read_write.c:544
 SYSC_write fs/read_write.c:589 [inline]
 SyS_write+0xef/0x220 fs/read_write.c:581
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x447f49
RSP: 002b:00007f97606cece8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00000000006f003c RCX: 0000000000447f49
RDX: 0000000000000314 RSI: 00000000200003c0 RDI: 0000000000000006
RBP: 00000000006f0038 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000007ffd8f R14: 00007f97606cf9c0 R15: 0000000000000005
Code: c7 40 1c 00 f2 f2 f2 c7 40 20 f2 f2 f2 f2 c7 40 24 00 f2 f2 f2 c7 40 28 f3 f3 f3 f3 48 8d 46 18 48 89 85 70 fe ff ff 48 c1 e8 03 <80> 3c 10 00 0f 85 da 04 00 00 49 8b 79 18 48 85 ff 0f 84 62 04 
RIP: perf_trace_lock_acquire+0xc0/0x980 include/trace/events/lock.h:13 RSP: ffff8801ad5b7540
---[ end trace e76bd36afa9b3c46 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..