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: 2 PID: 4148 Comm: syzkaller531708 Not tainted 4.13.0-rc6-next-20170824+ #8
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
task: ffff880039d92440 task.stack: ffff88003d5c8000
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:ffff88003d5cf7c8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 000000000000000f RCX: 0000000000000000
RDX: 0000000000000006 RSI: 0000000000000001 RDI: ffffffff84ee4b58
RBP: ffff88003d5cff48 R08: 0000000000000050 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10007ab9f00
R13: ffffffff84eeb7c0 R14: 0000000000000000 R15: 0000000020fcafec
FS:  00007f67a6db8700(0000) GS:ffff88006de00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020fcafec CR3: 000000003d7cd000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x43b6f9
RSP: 002b:00007f67a6db7db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043b6f9
RDX: 0000000000000014 RSI: 0000000020fcafec RDI: 0000000000000000
RBP: 0000000000000086 R08: 00007f67a6db8700 R09: 0000000000000000
R10: 00007f67a6db8700 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f67a6db89c0 R15: 00007f67a6db8700
Code: 00 0f 85 dc 43 00 00 49 8d 46 30 4e 8b 2c ed e0 4a 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: ffff88003d5cf7c8
RIP: map_create kernel/bpf/syscall.c:330 [inline] RSP: ffff88003d5cf7c8
RIP: SYSC_bpf kernel/bpf/syscall.c:1478 [inline] RSP: ffff88003d5cf7c8
RIP: SyS_bpf+0xd18/0x5170 kernel/bpf/syscall.c:1459 RSP: ffff88003d5cf7c8
---[ end trace 4b5dbb39cfa22aaa ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
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Kernel Offset: disabled
Rebooting in 86400 seconds..