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: 1 PID: 17350 Comm: syz-executor7 Not tainted 4.16.0-rc4+ #254 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rdma_accept+0xd3/0xe10 drivers/infiniband/core/cma.c:3781 RSP: 0018:ffff8801a9b57790 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff841bb636 RDX: 000000000000007a RSI: ffffc9000191e000 RDI: 00000000000003d4 RBP: ffff8801a9b57868 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff88613380 R11: 0000000000000000 R12: 1ffff1003536aef4 R13: 0000000000000000 R14: 00000000000043c6 R15: ffff8801a9b57840 FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f77c3b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000009bc21000 CR3: 00000001adf52002 CR4: 00000000001606e0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: ucma_accept+0x686/0x970 drivers/infiniband/core/ucma.c:1092 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: 0023:0xf7fe8c99 RSP: 002b:00000000f77c309c EFLAGS: 00000286 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000014 RCX: 0000000020007100 RDX: 00000000fffffdc6 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Code: 84 c0 74 08 3c 03 0f 8e c3 0a 00 00 48 8d bb d4 03 00 00 48 b8 00 00 00 00 00 fc ff df 45 8b b6 d0 04 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RIP: rdma_accept+0xd3/0xe10 drivers/infiniband/core/cma.c:3781 RSP: ffff8801a9b57790 ---[ end trace 6c6e93637e844d46 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..