audit: type=1400 audit(1521538405.050:8): avc:  denied  { map } for  pid=4228 comm="syz-execprog" path="/root/syzkaller-shm918272593" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1
IPVS: ftp: loaded support on port[0] = 21
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: 4361 Comm: syz-executor0 Not tainted 4.16.0-rc6+ #270
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rdma_notify+0x2c/0xf0 drivers/infiniband/core/cma.c:3829
RSP: 0018:ffff8801b3b1f9c8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff841ba114
RDX: 0000000000000078 RSI: 0000000000000000 RDI: 00000000000003c0
RBP: ffff8801b3b1f9e0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff88613400 R11: 0000000000000000 R12: ffff8801b52fe340
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8801b2afc680
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7fd3b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000000813b029 CR3: 00000001b2c1f002 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ucma_notify+0x11e/0x1a0 drivers/infiniband/core/ucma.c:1333
 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_32_irqs_on arch/x86/entry/common.c:330 [inline]
 do_fast_syscall_32+0x3ec/0xf9f arch/x86/entry/common.c:392
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7ff8c99
RSP: 002b:00000000f7fd309c EFLAGS: 00000286 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020008640
RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ec 77 55 fd 48 8d bb c0 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a0 00 00 00 4c 8b a3 c0 03 00 00 4d 85 e4 0f 
RIP: rdma_notify+0x2c/0xf0 drivers/infiniband/core/cma.c:3829 RSP: ffff8801b3b1f9c8
---[ end trace 9e8e7643f1e0857c ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..