[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 42.084057][ T27] audit: type=1800 audit(1557723379.171:25): pid=7946 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 42.104284][ T27] audit: type=1800 audit(1557723379.171:26): pid=7946 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.128831][ T27] audit: type=1800 audit(1557723379.171:27): pid=7946 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 '10.128.0.230' (ECDSA) to the list of known hosts. 2019/05/13 04:56:29 fuzzer started 2019/05/13 04:56:32 connecting to host at 10.128.0.26:45811 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: [ 55.117193][ T8108] IPVS: ftp: loaded support on port[0] = 21 2019/05/13 04:56:32 building call list... [ 56.251157][ T8095] can: request_module (can-proto-0) failed. [ 56.746602][ T21] ------------[ cut here ]------------ [ 56.752182][ T21] remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'use-gss-proxy' [ 56.762781][ T21] WARNING: CPU: 0 PID: 21 at fs/proc/generic.c:681 remove_proc_entry+0x367/0x410 [ 56.771913][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 56.778496][ T21] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.1.0-next-20190513 #6 [ 56.786718][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.796779][ T21] Workqueue: netns cleanup_net [ 56.801555][ T21] Call Trace: [ 56.804851][ T21] dump_stack+0x172/0x1f0 [ 56.809175][ T21] ? remove_proc_entry+0x350/0x410 [ 56.814287][ T21] panic+0x2cb/0x75a [ 56.818176][ T21] ? __warn_printk+0xf3/0xf3 [ 56.822762][ T21] ? remove_proc_entry+0x367/0x410 [ 56.827862][ T21] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.834102][ T21] ? __warn.cold+0x5/0x47 [ 56.838540][ T21] ? __warn+0xe8/0x1d0 [ 56.842605][ T21] ? remove_proc_entry+0x367/0x410 [ 56.847707][ T21] __warn.cold+0x20/0x47 [ 56.852026][ T21] ? vprintk_emit+0x1ea/0x700 [ 56.856719][ T21] ? remove_proc_entry+0x367/0x410 [ 56.861820][ T21] report_bug+0x263/0x2b0 [ 56.866147][ T21] do_error_trap+0x11b/0x200 [ 56.870728][ T21] do_invalid_op+0x37/0x50 [ 56.875134][ T21] ? remove_proc_entry+0x367/0x410 [ 56.880249][ T21] invalid_op+0x14/0x20 [ 56.884415][ T21] RIP: 0010:remove_proc_entry+0x367/0x410 [ 56.890490][ T21] 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 [ 56.910090][ T21] RSP: 0018:ffff8880a9a0fb10 EFLAGS: 00010286 [ 56.916156][ T21] RAX: 0000000000000000 RBX: 1ffff11015341f64 RCX: 0000000000000000 [ 56.924120][ T21] RDX: 0000000000000000 RSI: ffffffff815b20a6 RDI: ffffed1015341f54 [ 56.932081][ T21] RBP: ffff8880a9a0fbc0 R08: ffff8880a99fa580 R09: ffff8880a99fae70 [ 56.940394][ T21] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880860c8900 [ 56.948387][ T21] R13: ffff8880a76b5080 R14: ffff8880860c89b0 R15: dffffc0000000000 [ 56.956378][ T21] ? vprintk_func+0x86/0x189 [ 56.960982][ T21] ? proc_readdir+0x80/0x80 [ 56.965497][ T21] ? cache_destroy_net+0x3c/0x50 [ 56.970424][ T21] rpc_proc_exit+0x3e/0x50 [ 56.974859][ T21] sunrpc_exit_net+0x187/0x2d0 [ 56.979621][ T21] ? xdr_free_bvec+0x70/0x70 [ 56.984215][ T21] ops_exit_list.isra.0+0xb0/0x160 [ 56.989317][ T21] cleanup_net+0x3fb/0x960 [ 56.993740][ T21] ? netns_install+0x1d0/0x1d0 [ 56.998515][ T21] process_one_work+0x98e/0x1790 [ 57.003477][ T21] ? pwq_dec_nr_in_flight+0x320/0x320 [ 57.008834][ T21] ? lock_acquire+0x16f/0x3f0 [ 57.013517][ T21] worker_thread+0x98/0xe40 [ 57.018038][ T21] kthread+0x357/0x430 [ 57.022092][ T21] ? process_one_work+0x1790/0x1790 [ 57.027299][ T21] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 57.033555][ T21] ret_from_fork+0x3a/0x50 [ 57.039282][ T21] Kernel Offset: disabled [ 57.043718][ T21] Rebooting in 86400 seconds..