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:
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Modules linked in:
CPU: 0 PID: 20120 Comm: syz-executor7 Not tainted 4.16.0-rc4+ #258
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ucma_query_route+0x15e/0x1080 drivers/infiniband/core/ucma.c:817
RSP: 0018:ffff8801befdf8c0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 1ffff10037dfbf1c RCX: 0000000000000000
RDX: 0000000000000004 RSI: 0000000000000000 RDI: ffff8801cb0009b0
RBP: ffff8801befdfa70 R08: ffffed0037dfbf41 R09: ffff8801befdf940
R10: 0000000000000019 R11: ffffed0037dfbf40 R12: ffff8801cb000940
R13: ffff8801befdf940 R14: 0000000000000020 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f7738b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000000811711c CR3: 00000001c9d38003 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 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: 0023:0xf7f5dc99
RSP: 002b:00000000f773809c EFLAGS: 00000286 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000015 RCX: 00000000200027c0
RDX: 0000000000000018 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bb 0c 00 00 4d 8b 7c 24 70 48 b8 00 00 00 00 00 fc ff df 4d 8d 77 20 4c 89 f2 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 
RIP: ucma_query_route+0x15e/0x1080 drivers/infiniband/core/ucma.c:817 RSP: ffff8801befdf8c0
---[ end trace 4c29900c9e04cced ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..