[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 59.504752][ T27] audit: type=1800 audit(1557918033.068:25): pid=8903 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 59.547936][ T27] audit: type=1800 audit(1557918033.068:26): pid=8903 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 59.578017][ T27] audit: type=1800 audit(1557918033.068:27): pid=8903 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 '10.128.0.159' (ECDSA) to the list of known hosts. 2019/05/15 11:00:43 fuzzer started 2019/05/15 11:00:47 connecting to host at 10.128.0.26:44865 2019/05/15 11:00:47 checking machine... 2019/05/15 11:00:47 checking revisions... 2019/05/15 11:00:47 testing simple program... syzkaller login: [ 73.670023][ T9071] IPVS: ftp: loaded support on port[0] = 21 2019/05/15 11:00:47 building call list... [ 74.913490][ T9061] can: request_module (can-proto-0) failed. [ 75.318655][ T21] ------------[ cut here ]------------ [ 75.324345][ T21] remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'use-gss-proxy' [ 75.334989][ T21] WARNING: CPU: 1 PID: 21 at fs/proc/generic.c:681 remove_proc_entry+0x367/0x410 [ 75.344118][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 75.350874][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.1.0-next-20190515 #13 [ 75.359187][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.369262][ T21] Workqueue: netns cleanup_net [ 75.374012][ T21] Call Trace: [ 75.377289][ T21] dump_stack+0x172/0x1f0 [ 75.381606][ T21] ? remove_proc_entry+0x340/0x410 [ 75.386708][ T21] panic+0x2cb/0x75a [ 75.390591][ T21] ? __warn_printk+0xf3/0xf3 [ 75.395288][ T21] ? remove_proc_entry+0x367/0x410 [ 75.400414][ T21] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.406655][ T21] ? __warn.cold+0x5/0x47 [ 75.410975][ T21] ? __warn+0xe8/0x1d0 [ 75.415126][ T21] ? remove_proc_entry+0x367/0x410 [ 75.420239][ T21] __warn.cold+0x20/0x47 [ 75.424473][ T21] ? vprintk_emit+0x1ea/0x700 [ 75.429146][ T21] ? remove_proc_entry+0x367/0x410 [ 75.434286][ T21] report_bug+0x263/0x2b0 [ 75.438604][ T21] do_error_trap+0x11b/0x200 [ 75.443181][ T21] do_invalid_op+0x37/0x50 [ 75.447590][ T21] ? remove_proc_entry+0x367/0x410 [ 75.452750][ T21] invalid_op+0x14/0x20 [ 75.456930][ T21] RIP: 0010:remove_proc_entry+0x367/0x410 [ 75.462635][ 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 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 [ 75.482233][ T21] RSP: 0018:ffff8880a9a4fb10 EFLAGS: 00010286 [ 75.488388][ T21] RAX: 0000000000000000 RBX: 1ffff11015349f64 RCX: 0000000000000000 [ 75.496369][ T21] RDX: 0000000000000000 RSI: ffffffff815b2446 RDI: ffffed1015349f54 [ 75.504350][ T21] RBP: ffff8880a9a4fbc0 R08: ffff8880a9a46580 R09: ffff8880a9a46e70 [ 75.512309][ T21] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a8eb9540 [ 75.520268][ T21] R13: ffff8880a57a8ac0 R14: ffff8880a8eb95f0 R15: dffffc0000000000 [ 75.528248][ T21] ? vprintk_func+0x86/0x189 [ 75.532848][ T21] ? proc_readdir+0x80/0x80 [ 75.537360][ T21] ? cache_destroy_net+0x3c/0x50 [ 75.542310][ T21] rpc_proc_exit+0x3e/0x50 [ 75.546725][ T21] sunrpc_exit_net+0x187/0x2d0 [ 75.551475][ T21] ? xdr_free_bvec+0x70/0x70 [ 75.556055][ T21] ops_exit_list.isra.0+0xb0/0x160 [ 75.561154][ T21] cleanup_net+0x3fb/0x960 [ 75.565559][ T21] ? netns_install+0x1d0/0x1d0 [ 75.570316][ T21] process_one_work+0x98e/0x1790 [ 75.575258][ T21] ? pwq_dec_nr_in_flight+0x320/0x320 [ 75.580613][ T21] ? lock_acquire+0x16f/0x3f0 [ 75.585295][ T21] worker_thread+0x98/0xe40 [ 75.589809][ T21] kthread+0x357/0x430 [ 75.593873][ T21] ? process_one_work+0x1790/0x1790 [ 75.599055][ T21] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 75.605284][ T21] ret_from_fork+0x3a/0x50 [ 75.611018][ T21] Kernel Offset: disabled [ 75.615437][ T21] Rebooting in 86400 seconds..