Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.234' (ECDSA) to the list of known hosts.
2019/05/13 04:56:30 fuzzer started
2019/05/13 04:56:32 connecting to host at 10.128.0.26:35857
2019/05/13 04:56:32 checking machine...
2019/05/13 04:56:32 checking revisions...
2019/05/13 04:56:32 testing simple program...
syzkaller login: [   54.978045][ T7886] IPVS: ftp: loaded support on port[0] = 21
2019/05/13 04:56:33 building call list...
[   56.334294][ T7884] can: request_module (can-proto-0) failed.
[   56.649818][   T26] ------------[ cut here ]------------
[   56.655423][   T26] remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'use-gss-proxy'
[   56.666074][   T26] WARNING: CPU: 0 PID: 26 at fs/proc/generic.c:681 remove_proc_entry+0x367/0x410
[   56.675199][   T26] Kernel panic - not syncing: panic_on_warn set ...
[   56.681769][   T26] CPU: 0 PID: 26 Comm: kworker/u4:2 Not tainted 5.1.0-next-20190513 #6
[   56.690008][   T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.700053][   T26] Workqueue: netns cleanup_net
[   56.704808][   T26] Call Trace:
[   56.708084][   T26]  dump_stack+0x172/0x1f0
[   56.713011][   T26]  ? remove_proc_entry+0x350/0x410
[   56.718104][   T26]  panic+0x2cb/0x75a
[   56.722000][   T26]  ? __warn_printk+0xf3/0xf3
[   56.726574][   T26]  ? remove_proc_entry+0x367/0x410
[   56.731666][   T26]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   56.737884][   T26]  ? __warn.cold+0x5/0x47
[   56.742220][   T26]  ? __warn+0xe8/0x1d0
[   56.746274][   T26]  ? remove_proc_entry+0x367/0x410
[   56.751363][   T26]  __warn.cold+0x20/0x47
[   56.755583][   T26]  ? vprintk_emit+0x1ea/0x700
[   56.760255][   T26]  ? remove_proc_entry+0x367/0x410
[   56.765374][   T26]  report_bug+0x263/0x2b0
[   56.769686][   T26]  do_error_trap+0x11b/0x200
[   56.774280][   T26]  do_invalid_op+0x37/0x50
[   56.778674][   T26]  ? remove_proc_entry+0x367/0x410
[   56.783764][   T26]  invalid_op+0x14/0x20
[   56.787904][   T26] RIP: 0010:remove_proc_entry+0x367/0x410
[   56.793603][   T26] Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4c 49 8b 95 d0 00 00 00 48 c7 c6 80 85 97 87 48 c7 c7 00 85 97 87 e8 c7 b1 6d ff <0f> 0b e9 4b fe ff ff e8 6d 54 d4 ff e9 b5 fd ff ff e8 23 55 d4 ff
[   56.814599][   T26] RSP: 0018:ffff8880a9a8fb10 EFLAGS: 00010286
[   56.820642][   T26] RAX: 0000000000000000 RBX: 1ffff11015351f64 RCX: 0000000000000000
[   56.828592][   T26] RDX: 0000000000000000 RSI: ffffffff815b20a6 RDI: ffffed1015351f54
[   56.836543][   T26] RBP: ffff8880a9a8fbc0 R08: ffff8880a9a7c6c0 R09: ffff8880a9a7cfb0
[   56.844491][   T26] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888099b87280
[   56.852440][   T26] R13: ffff8880a55c77c0 R14: ffff888099b87330 R15: dffffc0000000000
[   56.860406][   T26]  ? vprintk_func+0x86/0x189
[   56.864981][   T26]  ? proc_readdir+0x80/0x80
[   56.869471][   T26]  ? cache_destroy_net+0x3c/0x50
[   56.874391][   T26]  rpc_proc_exit+0x3e/0x50
[   56.878791][   T26]  sunrpc_exit_net+0x187/0x2d0
[   56.883532][   T26]  ? xdr_free_bvec+0x70/0x70
[   56.888107][   T26]  ops_exit_list.isra.0+0xb0/0x160
[   56.893201][   T26]  cleanup_net+0x3fb/0x960
[   56.897596][   T26]  ? netns_install+0x1d0/0x1d0
[   56.902347][   T26]  process_one_work+0x98e/0x1790
[   56.907300][   T26]  ? pwq_dec_nr_in_flight+0x320/0x320
[   56.912650][   T26]  ? lock_acquire+0x16f/0x3f0
[   56.917310][   T26]  worker_thread+0x98/0xe40
[   56.921808][   T26]  ? trace_hardirqs_on+0x67/0x230
[   56.926833][   T26]  kthread+0x357/0x430
[   56.930881][   T26]  ? process_one_work+0x1790/0x1790
[   56.936053][   T26]  ? kthread_cancel_delayed_work_sync+0x20/0x20
[   56.942280][   T26]  ret_from_fork+0x3a/0x50
[   56.947871][   T26] Kernel Offset: disabled
[   56.952283][   T26] Rebooting in 86400 seconds..