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: 21501 Comm: syz-executor.3 Not tainted 4.14.273-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a23222c0 task.stack: ffff88809d980000
RIP: 0010:addr_resolve+0x1cc/0xa10 drivers/infiniband/core/addr.c:574
RSP: 0018:ffff88809d987960 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880a3614a60 RCX: ffffc90008426000
RDX: 0000000000000045 RSI: ffffffff85467414 RDI: 0000000000000228
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffff8880a23222c0 R12: 00000000ffffffc3
R13: ffff888091511850 R14: ffff888091511900 R15: ffff8880a3614ac4
FS:  00007fefc8d68700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8e9c8cb000 CR3: 00000000a8e68000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rdma_resolve_ip+0x40d/0x6b0 drivers/infiniband/core/addr.c:709
 rdma_resolve_addr+0x2bc/0x23b0 drivers/infiniband/core/cma.c:2940
 ucma_resolve_ip+0xf5/0x190 drivers/infiniband/core/ucma.c:693
 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: 0033:0x7fefca3f3049
RSP: 002b:00007fefc8d68168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fefca505f60 RCX: 00007fefca3f3049
RDX: 0000000000000048 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fefca44d08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc81d60caf R14: 00007fefc8d68300 R15: 0000000000022000
Code: 3b ce 0e fc 48 8b 7c 24 48 e8 e1 a0 7f 00 e8 2c ce 0e fc 48 8d bd 28 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e ff 06 00 00 f6 85 28 02 00 
RIP: addr_resolve+0x1cc/0xa10 drivers/infiniband/core/addr.c:574 RSP: ffff88809d987960
---[ end trace 3b07399fc38776d4 ]---
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	fc                   	cld
   1:	48 8b 7c 24 48       	mov    0x48(%rsp),%rdi
   6:	e8 e1 a0 7f 00       	callq  0x7fa0ec
   b:	e8 2c ce 0e fc       	callq  0xfc0ece3c
  10:	48 8d bd 28 02 00 00 	lea    0x228(%rbp),%rdi
  17:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1e:	fc ff df
  21:	48 89 fa             	mov    %rdi,%rdx
  24:	48 c1 ea 03          	shr    $0x3,%rdx
* 28:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2c:	84 c0                	test   %al,%al
  2e:	74 08                	je     0x38
  30:	3c 03                	cmp    $0x3,%al
  32:	0f 8e ff 06 00 00    	jle    0x737
  38:	f6                   	.byte 0xf6
  39:	85 28                	test   %ebp,(%rax)
  3b:	02 00                	add    (%rax),%al