[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 62.649063][ T27] audit: type=1800 audit(1557918036.248:25): pid=8942 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 62.692041][ T27] audit: type=1800 audit(1557918036.248:26): pid=8942 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 62.727421][ T27] audit: type=1800 audit(1557918036.248:27): pid=8942 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] 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 '10.128.1.1' (ECDSA) to the list of known hosts. 2019/05/15 11:00:46 fuzzer started 2019/05/15 11:00:49 connecting to host at 10.128.0.26:36685 2019/05/15 11:00:49 checking machine... 2019/05/15 11:00:49 checking revisions... 2019/05/15 11:00:49 testing simple program... syzkaller login: [ 75.727493][ T9107] IPVS: ftp: loaded support on port[0] = 21 2019/05/15 11:00:49 building call list... [ 77.101147][ T9112] can: request_module (can-proto-0) failed. [ 77.433148][ T163] ------------[ cut here ]------------ [ 77.438721][ T163] remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'use-gss-proxy' [ 77.449266][ T163] WARNING: CPU: 0 PID: 163 at fs/proc/generic.c:681 remove_proc_entry+0x367/0x410 [ 77.458476][ T163] Kernel panic - not syncing: panic_on_warn set ... [ 77.465070][ T163] CPU: 0 PID: 163 Comm: kworker/u4:3 Not tainted 5.1.0-next-20190515 #13 [ 77.473490][ T163] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.483576][ T163] Workqueue: netns cleanup_net [ 77.488350][ T163] Call Trace: [ 77.491766][ T163] dump_stack+0x172/0x1f0 [ 77.496148][ T163] ? remove_proc_entry+0x340/0x410 [ 77.501478][ T163] panic+0x2cb/0x75a [ 77.505406][ T163] ? __warn_printk+0xf3/0xf3 [ 77.510035][ T163] ? remove_proc_entry+0x367/0x410 [ 77.515146][ T163] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.521386][ T163] ? __warn.cold+0x5/0x47 [ 77.525705][ T163] ? __warn+0xe8/0x1d0 [ 77.529882][ T163] ? remove_proc_entry+0x367/0x410 [ 77.534987][ T163] __warn.cold+0x20/0x47 [ 77.539227][ T163] ? vprintk_emit+0x1ea/0x700 [ 77.543981][ T163] ? remove_proc_entry+0x367/0x410 [ 77.549089][ T163] report_bug+0x263/0x2b0 [ 77.553413][ T163] do_error_trap+0x11b/0x200 [ 77.558000][ T163] do_invalid_op+0x37/0x50 [ 77.562404][ T163] ? remove_proc_entry+0x367/0x410 [ 77.567503][ T163] invalid_op+0x14/0x20 [ 77.571665][ T163] RIP: 0010:remove_proc_entry+0x367/0x410 [ 77.577369][ T163] 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 40 8d 97 87 48 c7 c7 c0 8c 97 87 e8 87 c9 6d ff <0f> 0b e9 4b fe ff ff e8 cd 56 d4 ff e9 b5 fd ff ff e8 83 57 d4 ff [ 77.596975][ T163] RSP: 0018:ffff8880a965fb10 EFLAGS: 00010286 [ 77.603048][ T163] RAX: 0000000000000000 RBX: 1ffff110152cbf64 RCX: 0000000000000000 [ 77.611014][ T163] RDX: 0000000000000000 RSI: ffffffff815b2446 RDI: ffffed10152cbf54 [ 77.618989][ T163] RBP: ffff8880a965fbc0 R08: ffff8880a9696500 R09: ffff8880a9696df0 [ 77.626983][ T163] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a03a0000 [ 77.634959][ T163] R13: ffff8880a62b3200 R14: ffff8880a03a00b0 R15: dffffc0000000000 [ 77.642962][ T163] ? vprintk_func+0x86/0x189 [ 77.647578][ T163] ? proc_readdir+0x80/0x80 [ 77.652216][ T163] ? cache_destroy_net+0x3c/0x50 [ 77.657161][ T163] rpc_proc_exit+0x3e/0x50 [ 77.661573][ T163] sunrpc_exit_net+0x187/0x2d0 [ 77.666334][ T163] ? xdr_free_bvec+0x70/0x70 [ 77.670958][ T163] ops_exit_list.isra.0+0xb0/0x160 [ 77.676073][ T163] cleanup_net+0x3fb/0x960 [ 77.680496][ T163] ? netns_install+0x1d0/0x1d0 [ 77.685258][ T163] process_one_work+0x98e/0x1790 [ 77.690210][ T163] ? pwq_dec_nr_in_flight+0x320/0x320 [ 77.695611][ T163] ? lock_acquire+0x16f/0x3f0 [ 77.700497][ T163] worker_thread+0x98/0xe40 [ 77.705129][ T163] ? trace_hardirqs_on+0x67/0x230 [ 77.710169][ T163] kthread+0x357/0x430 [ 77.714248][ T163] ? process_one_work+0x1790/0x1790 [ 77.719483][ T163] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 77.725741][ T163] ret_from_fork+0x3a/0x50 [ 77.731440][ T163] Kernel Offset: disabled [ 77.735896][ T163] Rebooting in 86400 seconds..