audit: type=1400 audit(1521188384.434:8): avc:  denied  { map } for  pid=4274 comm="syz-execprog" path="/root/syzkaller-shm569614298" 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: 0 PID: 5331 Comm: syz-executor0 Not tainted 4.16.0-rc5+ #265
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rdma_reject+0x37/0x220 drivers/infiniband/core/cma.c:3851
RSP: 0018:ffff8801ad5cf8a8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 1ffff10035ab9f1f RCX: ffffffff841bd2bf
RDX: 0000000000000078 RSI: ffff8801ad5cf920 RDI: 00000000000003c0
RBP: ffff8801ad5cf8d8 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff886133c0 R11: 0000000000000000 R12: 0000000000000077
R13: ffff8801ad5cfa58 R14: ffff8801ad5cf920 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f7eddb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000008452798 CR3: 00000001d0584003 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ucma_reject+0x149/0x220 drivers/infiniband/core/ucma.c:1112
 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: 0023:0xf7f02c99
RSP: 002b:00000000f7edd09c EFLAGS: 00000286 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000440
RDX: 0000000000000110 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: 49 89 ff 53 41 89 d4 49 89 f6 48 83 ec 08 e8 e1 44 55 fd 49 8d bf 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 01 00 00 4d 8b af c0 03 00 00 4d 85 ed 0f 
RIP: rdma_reject+0x37/0x220 drivers/infiniband/core/cma.c:3851 RSP: ffff8801ad5cf8a8
---[ end trace feae0020ffd85584 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..