kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 21385 Comm: syz-executor.2 Not tainted 4.14.268-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880989a8180 task.stack: ffff88807f888000
RIP: 0010:rdma_cap_ib_sa include/rdma/ib_verbs.h:2682 [inline]
RIP: 0010:rdma_resolve_route+0x1cf/0x2e70 drivers/infiniband/core/cma.c:2687
RSP: 0018:ffff88807f88fa50 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000401 RCX: 0000000000000000
RDX: 0000000000000029 RSI: 0000000000000001 RDI: 0000000000000148
RBP: ffff88807f88fc10 R08: ffffffff8b9e1110 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286
R13: ffff888093437240 R14: 0000000000000000 R15: 0000000000000000
FS:  00007ff0a5f86700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc687e47000 CR3: 00000000b4987000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ucma_resolve_route+0xb2/0x120 drivers/infiniband/core/ucma.c:740
 ucma_write+0x206/0x2c0 drivers/infiniband/core/ucma.c:1672
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7ff0a7653049
RSP: 002b:00007ff0a5f86168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff0a7766100 RCX: 00007ff0a7653049
RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007ff0a76ad08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff1e6759ff R14: 00007ff0a5f86300 R15: 0000000000022000
Code: df 48 c1 ea 03 80 3c 02 00 0f 85 31 26 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7d 00 49 8d bf 48 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 01 26 00 00 48 b8 00 00 00 00 00 fc ff df 45 
RIP: rdma_cap_ib_sa include/rdma/ib_verbs.h:2682 [inline] RSP: ffff88807f88fa50
RIP: rdma_resolve_route+0x1cf/0x2e70 drivers/infiniband/core/cma.c:2687 RSP: ffff88807f88fa50
---[ end trace e89dab08d97ddc05 ]---
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   8:	0f 85 31 26 00 00    	jne    0x263f
   e:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  15:	fc ff df
  18:	4d 8b 7d 00          	mov    0x0(%r13),%r15
  1c:	49 8d bf 48 01 00 00 	lea    0x148(%r15),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 01 26 00 00    	jne    0x2635
  34:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  3b:	fc ff df
  3e:	45                   	rex.RB