audit: type=1400 audit(1520532258.129:8): avc:  denied  { map } for  pid=4179 comm="syz-execprog" path="/root/syzkaller-shm429555582" 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: 4187 Comm: syz-executor0 Not tainted 4.16.0-rc4+ #256
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rdma_cap_opa_ah include/rdma/ib_verbs.h:2777 [inline]
RIP: 0010:ucma_set_ib_path.isra.14+0x26a/0x850 drivers/infiniband/core/ucma.c:1231
RSP: 0018:ffff8801baeef7d0 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000029
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000148
RBP: ffff8801baeef9d0 R08: ffffed00375ddf14 R09: ffffffff867a1b5c
R10: 0000000000000002 R11: ffffed00375ddf13 R12: ffff8801baeef880
R13: 1ffff100375ddefc R14: ffff8801bd9fe1b0 R15: ffff8801afa48900
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000087db900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000008138024 CR3: 00000001bad4d002 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ucma_set_option_ib drivers/infiniband/core/ucma.c:1254 [inline]
 ucma_set_option_level drivers/infiniband/core/ucma.c:1273 [inline]
 ucma_set_option+0x252/0x4d0 drivers/infiniband/core/ucma.c:1304
 ucma_write+0x2d6/0x3d0 drivers/infiniband/core/ucma.c:1627
 __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: 0023:0xf7fc8c99
RSP: 002b:00000000ffeeabec EFLAGS: 00000286 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020001340
RDX: 000000000000034d RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: 00 00 48 c1 ea 03 80 3c 02 00 0f 85 0d 05 00 00 49 8b 07 48 ba 00 00 00 00 00 fc ff df 48 8d b8 48 01 00 00 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 54 05 00 00 48 c1 e3 04 48 03 98 48 01 00 00 
RIP: rdma_cap_opa_ah include/rdma/ib_verbs.h:2777 [inline] RSP: ffff8801baeef7d0
RIP: ucma_set_ib_path.isra.14+0x26a/0x850 drivers/infiniband/core/ucma.c:1231 RSP: ffff8801baeef7d0
---[ end trace 88fe3df3977279c9 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..