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: 5926 Comm: syz-executor6 Not tainted 4.16.0+ #288
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:2773 [inline]
RIP: 0010:ucma_set_ib_path.isra.14+0x26a/0x850 drivers/infiniband/core/ucma.c:1249
RSP: 0018:ffff8801b689f7a0 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000029
RDX: dffffc0000000000 RSI: ffffc90007472000 RDI: 0000000000000148
RBP: ffff8801b689f9a0 R08: ffffed0036d13f0e R09: ffffffff87b6ca9c
R10: 0000000000000002 R11: ffffed0036d13f0d R12: ffff8801b689f850
R13: 1ffff10036d13ef6 R14: ffff8801b53f1870 R15: ffff8801ac42f6c0
FS:  0000000000000000(0000) GS:ffff8801db100000(0063) knlGS:00000000f5f5bb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000008135f48 CR3: 00000001b70de000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ucma_set_option_ib drivers/infiniband/core/ucma.c:1272 [inline]
 ucma_set_option_level drivers/infiniband/core/ucma.c:1291 [inline]
 ucma_set_option+0x234/0x520 drivers/infiniband/core/ucma.c:1325
 ucma_write+0x2d6/0x3d0 drivers/infiniband/core/ucma.c:1656
 __vfs_write+0xef/0x970 fs/read_write.c:485
 vfs_write+0x189/0x510 fs/read_write.c:549
 ksys_write+0xef/0x220 fs/read_write.c:598
 SYSC_write fs/read_write.c:610 [inline]
 SyS_write+0x24/0x30 fs/read_write.c:607
 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: 0023:0xf7f5fc99
RSP: 002b:00000000f5f5b0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 0000000020000a40
RDX: 0000000000000020 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:2773 [inline] RSP: ffff8801b689f7a0
RIP: ucma_set_ib_path.isra.14+0x26a/0x850 drivers/infiniband/core/ucma.c:1249 RSP: ffff8801b689f7a0
---[ end trace 1ce881df5623e53f ]---