[info] Using makefile-style concurrent boot in runlevel 2.
[   27.769486] audit: type=1800 audit(1543146188.216:21): pid=5885 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0
[....] 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 '10.128.10.21' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   39.167172] ==================================================================
[   39.174635] BUG: KASAN: slab-out-of-bounds in queue_stack_map_push_elem+0x185/0x290
[   39.182424] Write of size 262146 at addr ffff8881bc12ee48 by task syz-executor009/6041
[   39.190465] 
[   39.192085] CPU: 1 PID: 6041 Comm: syz-executor009 Not tainted 4.20.0-rc3+ #127
[   39.199516] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.208857] Call Trace:
[   39.211440]  dump_stack+0x244/0x39d
[   39.215059]  ? dump_stack_print_info.cold.1+0x20/0x20
[   39.220254]  ? printk+0xa7/0xcf
[   39.223526]  ? kmsg_dump_rewind_nolock+0xe4/0xe4
[   39.228278]  print_address_description.cold.7+0x9/0x1ff
[   39.233674]  kasan_report.cold.8+0x242/0x309
[   39.238072]  ? queue_stack_map_push_elem+0x185/0x290
[   39.243173]  check_memory_region+0x13e/0x1b0
[   39.247574]  memcpy+0x37/0x50
[   39.250675]  queue_stack_map_push_elem+0x185/0x290
[   39.255595]  ? queue_map_pop_elem+0x30/0x30
[   39.259908]  map_update_elem+0x605/0xf60
[   39.263964]  __x64_sys_bpf+0x32d/0x520
[   39.267842]  ? bpf_prog_get+0x20/0x20
[   39.271645]  do_syscall_64+0x1b9/0x820
[   39.275522]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   39.280881]  ? syscall_return_slowpath+0x5e0/0x5e0
[   39.285803]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.290638]  ? trace_hardirqs_on_caller+0x310/0x310
[   39.295644]  ? prepare_exit_to_usermode+0x3b0/0x3b0
[   39.300654]  ? prepare_exit_to_usermode+0x291/0x3b0
[   39.305663]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.310504]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   39.315684] RIP: 0033:0x4400e9
[   39.318882] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   39.337773] RSP: 002b:00007fffa3b64458 EFLAGS: 00000213 ORIG_RAX: 0000000000000141
[   39.345474] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400e9
[   39.352737] RDX: 0000000000000020 RSI: 0000000020000040 RDI: 0000000000000002
[   39.360108] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   39.367494] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401970
[   39.374755] R13: 0000000000401a00 R14: 0000000000000000 R15: 0000000000000000
[   39.382020] 
[   39.383639] Allocated by task 6041:
[   39.387269]  save_stack+0x43/0xd0
[   39.390714]  kasan_kmalloc+0xc7/0xe0
[   39.394417]  __kmalloc_node+0x50/0x70
[   39.398203]  bpf_map_area_alloc+0x3f/0x90
[   39.402354]  queue_stack_map_alloc+0x192/0x290
[   39.406929]  map_create+0x3bd/0x1110
[   39.410630]  __x64_sys_bpf+0x303/0x520
[   39.414509]  do_syscall_64+0x1b9/0x820
[   39.418388]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   39.423563] 
[   39.425177] Freed by task 3716:
[   39.428448]  save_stack+0x43/0xd0
[   39.431892]  __kasan_slab_free+0x102/0x150
[   39.436117]  kasan_slab_free+0xe/0x10
[   39.439906]  kfree+0xcf/0x230
[   39.443003]  skb_free_head+0x99/0xc0
[   39.446740]  skb_release_data+0x70c/0x9a0
[   39.450878]  skb_release_all+0x4a/0x60
[   39.454755]  consume_skb+0x1ae/0x570
[   39.458570]  skb_free_datagram+0x1a/0xf0
[   39.462625]  unix_dgram_recvmsg+0xd6d/0x1b10
[   39.467024]  sock_recvmsg+0xd0/0x110
[   39.470731]  __sys_recvfrom+0x311/0x5d0
[   39.474693]  __x64_sys_recvfrom+0xe1/0x1a0
[   39.478915]  do_syscall_64+0x1b9/0x820
[   39.482793]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   39.487966] 
[   39.489590] The buggy address belongs to the object at ffff8881bc12ed00
[   39.489590]  which belongs to the cache kmalloc-512 of size 512
[   39.502249] The buggy address is located 328 bytes inside of
[   39.502249]  512-byte region [ffff8881bc12ed00, ffff8881bc12ef00)
[   39.514112] The buggy address belongs to the page:
[   39.519033] page:ffffea0006f04b80 count:1 mapcount:0 mapping:ffff8881da800940 index:0x0
[   39.527162] flags: 0x2fffc0000000200(slab)
[   39.531389] raw: 02fffc0000000200 ffffea0006f1cd08 ffffea0006f067c8 ffff8881da800940
[   39.539288] raw: 0000000000000000 ffff8881bc12e080 0000000100000006 0000000000000000
[   39.547165] page dumped because: kasan: bad access detected
[   39.552860] 
[   39.554476] Memory state around the buggy address:
[   39.559404]  ffff8881bc12ed80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   39.566761]  ffff8881bc12ee00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   39.574111] >ffff8881bc12ee80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   39.581455]                    ^
[   39.584810]  ffff8881bc12ef00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   39.592159]  ffff8881bc12ef80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   39.599503] ==================================================================
[   39.606850] Disabling lock debugging due to kernel taint
[   39.612287] Kernel panic - not syncing: panic_on_warn set ...
[   39.618160] CPU: 1 PID: 6041 Comm: syz-executor009 Tainted: G    B             4.20.0-rc3+ #127
[   39.627156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.636497] Call Trace:
[   39.639184]  dump_stack+0x244/0x39d
[   39.642804]  ? dump_stack_print_info.cold.1+0x20/0x20
[   39.647984]  panic+0x2ad/0x55c
[   39.651173]  ? add_taint.cold.5+0x16/0x16
[   39.655311]  ? add_taint.cold.5+0x5/0x16
[   39.659365]  ? trace_hardirqs_off+0xaf/0x310
[   39.663767]  kasan_end_report+0x47/0x4f
[   39.667728]  kasan_report.cold.8+0x76/0x309
[   39.672038]  ? queue_stack_map_push_elem+0x185/0x290
[   39.677130]  check_memory_region+0x13e/0x1b0
[   39.681530]  memcpy+0x37/0x50
[   39.684624]  queue_stack_map_push_elem+0x185/0x290
[   39.689540]  ? queue_map_pop_elem+0x30/0x30
[   39.693852]  map_update_elem+0x605/0xf60
[   39.697901]  __x64_sys_bpf+0x32d/0x520
[   39.701776]  ? bpf_prog_get+0x20/0x20
[   39.705608]  do_syscall_64+0x1b9/0x820
[   39.709485]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   39.714839]  ? syscall_return_slowpath+0x5e0/0x5e0
[   39.719757]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.724590]  ? trace_hardirqs_on_caller+0x310/0x310
[   39.729594]  ? prepare_exit_to_usermode+0x3b0/0x3b0
[   39.734598]  ? prepare_exit_to_usermode+0x291/0x3b0
[   39.739605]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.744437]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   39.749626] RIP: 0033:0x4400e9
[   39.752822] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   39.771713] RSP: 002b:00007fffa3b64458 EFLAGS: 00000213 ORIG_RAX: 0000000000000141
[   39.779405] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400e9
[   39.786662] RDX: 0000000000000020 RSI: 0000000020000040 RDI: 0000000000000002
[   39.793917] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   39.801176] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401970
[   39.808432] R13: 0000000000401a00 R14: 0000000000000000 R15: 0000000000000000
[   39.816827] Kernel Offset: disabled
[   39.820458] Rebooting in 86400 seconds..