INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added 'ci-upstream-net-kasan-gce-6,10.128.15.209' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   50.799963] ------------[ cut here ]------------
[   50.800811] kernel BUG at mm/slab.c:3256!
[   50.801387] invalid opcode: 0000 [#1] SMP KASAN
[   50.802035] Dumping ftrace buffer:
[   50.802511]    (ftrace buffer empty)
[   50.803050] Modules linked in:
[   50.803519] CPU: 0 PID: 2949 Comm: syzkaller050748 Not tainted 4.13.0-rc7+ #36
[   50.804543] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   50.805839] task: ffff8801d2cb4380 task.stack: ffff8801d2548000
[   50.806643] RIP: 0010:____cache_alloc_node+0x1d4/0x1e0
[   50.807378] RSP: 0018:ffff8801d254f538 EFLAGS: 00010092
[   50.808111] RAX: fffffffffffffe00 RBX: 00000000014012c0 RCX: 0000000000000000
[   50.809079] RDX: 00000000fffffe00 RSI: 00000000014012c0 RDI: ffff8801dac004c0
[   50.810043] RBP: ffff8801d254f5c0 R08: 0000000000400000 R09: 00000000014092c0
[   50.810998] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801dac004c0
[   50.811971] R13: ffff8801dac004c0 R14: 0000000000000000 R15: 00000000fffffe00
[   50.812929] FS:  00000000009be880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
[   50.814046] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   50.814822] CR2: 0000000020ff2fe4 CR3: 00000001d3afa000 CR4: 00000000001406f0
[   50.815777] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   50.816761] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   50.817750] Call Trace:
[   50.818128]  ? kmem_cache_alloc_node_trace+0xe2/0x750
[   50.818855]  alloc_vmap_area+0x11c/0x8c0
[   50.819400]  ? __get_vm_area_node+0xae/0x340
[   50.820063]  ? purge_vmap_area_lazy+0x40/0x40
[   50.824241]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   50.829224]  ? trace_hardirqs_on+0xd/0x10
[   50.833341]  __get_vm_area_node+0xe8/0x340
[   50.837546]  __vmalloc_node_range+0xa3/0x730
[   50.841922]  ? sock_map_alloc+0x4d2/0x610
[   50.846044]  ? bpf_map_area_free+0x20/0x20
[   50.850245]  ? sock_map_alloc+0x4d2/0x610
[   50.854357]  __vmalloc_node_flags_caller+0x50/0x60
[   50.859252]  ? sock_map_alloc+0x4d2/0x610
[   50.863368]  bpf_map_area_alloc+0x62/0x80
[   50.867482]  sock_map_alloc+0x4d2/0x610
[   50.871428]  SyS_bpf+0xc56/0x4c40
[   50.874849]  ? bpf_prog_get+0x20/0x20
[   50.878618]  ? mem_cgroup_charge_statistics+0x740/0x740
[   50.883952]  ? check_noncircular+0x20/0x20
[   50.888153]  ? lru_cache_add+0x1c7/0x3a0
[   50.892179]  ? lock_page_memcg+0x3b0/0x3b0
[   50.896380]  ? lru_cache_add_file+0x20/0x20
[   50.900667]  ? __mem_cgroup_threshold+0x8f0/0x8f0
[   50.905477]  ? mark_held_locks+0xaf/0x100
[   50.909596]  ? find_held_lock+0x35/0x1d0
[   50.913626]  ? __handle_mm_fault+0x2349/0x3860
[   50.918175]  ? lock_downgrade+0x990/0x990
[   50.922290]  ? do_raw_spin_trylock+0x190/0x190
[   50.926858]  ? _raw_spin_unlock+0x22/0x30
[   50.930974]  ? __handle_mm_fault+0x577/0x3860
[   50.935436]  ? check_noncircular+0x20/0x20
[   50.939636]  ? __pmd_alloc+0x4e0/0x4e0
[   50.943492]  ? userfaultfd_unmap_prep+0x540/0x540
[   50.948312]  ? find_held_lock+0x35/0x1d0
[   50.952342]  ? handle_mm_fault+0x23e/0x860
[   50.956547]  ? find_held_lock+0x35/0x1d0
[   50.960580]  ? __do_page_fault+0x51b/0xb60
[   50.964780]  ? lock_downgrade+0x990/0x990
[   50.968896]  ? handle_mm_fault+0x4a2/0x860
[   50.973097]  ? down_read_trylock+0xdb/0x170
[   50.977386]  ? __handle_mm_fault+0x3860/0x3860
[   50.981937]  ? vmacache_find+0x61/0x270
[   50.985879]  ? vmacache_update+0xfe/0x130
[   50.989997]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   50.994814]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   50.999553]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   51.004276] RIP: 0033:0x43fcd9
[   51.007436] RSP: 002b:00007fff87df72a8 EFLAGS: 00000217 ORIG_RAX: 0000000000000141
[   51.015108] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9
[   51.022344] RDX: 000000000000001c RSI: 0000000020ff2fe4 RDI: 0000000000000000
[   51.029580] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000
[   51.036816] R10: ffffffffffffffff R11: 0000000000000217 R12: 0000000000401640
[   51.044052] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000
[   51.051295] Code: 83 c2 01 89 50 18 4c 03 70 08 e8 38 f4 ff ff 4d 85 f6 0f 85 3e ff ff ff 44 89 fe 4c 89 ef e8 94 fb ff ff 49 89 c6 e9 2b ff ff ff <0f> 0b 0f 0b 0f 0b 66 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 
[   51.070368] RIP: ____cache_alloc_node+0x1d4/0x1e0 RSP: ffff8801d254f538
[   51.077100] ---[ end trace 18ac8f0584eb2092 ]---
[   51.081830] Kernel panic - not syncing: Fatal exception
[   51.087191] Dumping ftrace buffer:
[   51.090697]    (ftrace buffer empty)
[   51.094375] Kernel Offset: disabled
[   51.097969] Rebooting in 86400 seconds..