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: 27530 Comm: syz-executor7 Not tainted 4.16.0-rc6+ #360
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rdma_notify+0x2c/0xf0 drivers/infiniband/core/cma.c:3829
RSP: 0018:ffff8801da477a18 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff841ba114
RDX: 0000000000000078 RSI: ffffc9000198a000 RDI: 00000000000003c0
RBP: ffff8801da477a30 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff88613400 R11: 0000000000000000 R12: ffff8801b4279640
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff8801b4279780
FS:  00007f923b23a700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c426a71000 CR3: 00000001b6052001 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000492 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 ucma_notify+0x11e/0x1a0 drivers/infiniband/core/ucma.c:1333
 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_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x453e69
RSP: 002b:00007f923b239c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f923b23a6d4 RCX: 0000000000453e69
RDX: 0000000000000008 RSI: 0000000020000040 RDI: 0000000000000014
RBP: 000000000072bf58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000672 R14: 00000000006f9b50 R15: 0000000000000001
Code: 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ec 77 55 fd 48 8d bb c0 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a0 00 00 00 4c 8b a3 c0 03 00 00 4d 85 e4 0f 
RIP: rdma_notify+0x2c/0xf0 drivers/infiniband/core/cma.c:3829 RSP: ffff8801da477a18
---[ end trace 493de5dd807482ef ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..