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: 2 PID: 3402 Comm: syz-executor4 Not tainted 4.13.0-rc6-next-20170825+ #9
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff88003caa4380 task.stack: ffff88003d298000
RIP: 0010:find_and_alloc_map kernel/bpf/syscall.c:103 [inline]
RIP: 0010:map_create kernel/bpf/syscall.c:330 [inline]
RIP: 0010:SYSC_bpf kernel/bpf/syscall.c:1478 [inline]
RIP: 0010:SyS_bpf+0xd18/0x5170 kernel/bpf/syscall.c:1459
RSP: 0018:ffff88003d29f7c8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 000000000000000f RCX: 0000000000000000
RDX: 0000000000000006 RSI: 0000000000000001 RDI: ffffffff84ee4c18
RBP: ffff88003d29ff48 R08: 0000000000000050 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10007a53f00
R13: ffffffff84eeb880 R14: 0000000000000000 R15: 00000000203c0fec
FS:  00007f061840b700(0000) GS:ffff88006de00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe812bd2db8 CR3: 000000006c4e9000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x446749
RSP: 002b:00007f061840ac08 EFLAGS: 00000296 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000446749
RDX: 0000000000000014 RSI: 00000000203c0fec RDI: 0000000000000000
RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f061840b9c0 R15: 00007f061840b700
Code: 00 0f 85 dc 43 00 00 49 8d 46 30 4e 8b 2c ed a0 4b ee 84 48 89 c2 48 89 85 b0 f8 ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 9d 43 00 00 49 8d 7e 04 48 b8 00 00 00 00 00 
RIP: find_and_alloc_map kernel/bpf/syscall.c:103 [inline] RSP: ffff88003d29f7c8
RIP: map_create kernel/bpf/syscall.c:330 [inline] RSP: ffff88003d29f7c8
RIP: SYSC_bpf kernel/bpf/syscall.c:1478 [inline] RSP: ffff88003d29f7c8
RIP: SyS_bpf+0xd18/0x5170 kernel/bpf/syscall.c:1459 RSP: ffff88003d29f7c8
---[ end trace fe56c1c24ff436a9 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..