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: 0 PID: 25613 Comm: syz-executor6 Not tainted 4.16.0-rc5+ #267
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ucma_copy_conn_param drivers/infiniband/core/ucma.c:1021 [inline]
RIP: 0010:ucma_accept+0x4eb/0x970 drivers/infiniband/core/ucma.c:1085
RSP: 0018:ffff8801bc02f878 EFLAGS: 00010202
RAX: 0000000000010000 RBX: ffff8801bc02f8f8 RCX: dffffc0000000000
RDX: 0000000000000077 RSI: 0000000000000004 RDI: 0000000000000020
RBP: ffff8801bc02fa80 R08: 0000000000000000 R09: 1ffff10037805f19
R10: ffffffff886133c0 R11: 0000000000000000 R12: ffff8801bc02f8b8
R13: ffff8801bc02fa58 R14: ffff8801d7dc9680 R15: ffff8801c8a62dc0
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f7764b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000008452798 CR3: 00000001bc36c006 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ucma_write+0x2d6/0x3d0 drivers/infiniband/core/ucma.c:1633
 __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: 0023:0xf7f89c99
RSP: 002b:00000000f776409c EFLAGS: 00000286 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000018 RCX: 0000000020000040
RDX: 00000000000003fd RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Code: 0c 09 84 c9 74 09 80 f9 03 0f 8e 4a 02 00 00 49 8d 78 20 41 89 b5 70 fe ff ff 48 b9 00 00 00 00 00 fc ff df 48 89 fe 48 c1 ee 03 <0f> b6 34 0e 48 89 f9 83 e1 07 83 c1 01 40 38 f1 7c 09 40 84 f6 
RIP: ucma_copy_conn_param drivers/infiniband/core/ucma.c:1021 [inline] RSP: ffff8801bc02f878
RIP: ucma_accept+0x4eb/0x970 drivers/infiniband/core/ucma.c:1085 RSP: ffff8801bc02f878
---[ end trace dd9a8e60207c7241 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..