[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 59.360898][ T26] audit: type=1800 audit(1557775225.352:25): pid=8823 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 59.406531][ T26] audit: type=1800 audit(1557775225.352:26): pid=8823 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 59.466423][ T26] audit: type=1800 audit(1557775225.362:27): pid=8823 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. 2019/05/13 19:20:35 fuzzer started 2019/05/13 19:20:38 connecting to host at 10.128.0.26:39155 2019/05/13 19:20:38 checking machine... 2019/05/13 19:20:38 checking revisions... 2019/05/13 19:20:38 testing simple program... syzkaller login: [ 72.234408][ T8987] IPVS: ftp: loaded support on port[0] = 21 2019/05/13 19:20:38 building call list... [ 73.535147][ T8991] can: request_module (can-proto-0) failed. [ 73.887431][ T2980] ------------[ cut here ]------------ [ 73.893001][ T2980] remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'use-gss-proxy' [ 73.903514][ T2980] WARNING: CPU: 0 PID: 2980 at fs/proc/generic.c:681 remove_proc_entry+0x367/0x410 [ 73.912801][ T2980] Kernel panic - not syncing: panic_on_warn set ... [ 73.919373][ T2980] CPU: 0 PID: 2980 Comm: kworker/u4:4 Not tainted 5.1.0-next-20190513 #8 [ 73.927765][ T2980] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.937837][ T2980] Workqueue: netns cleanup_net [ 73.943603][ T2980] Call Trace: [ 73.946973][ T2980] dump_stack+0x172/0x1f0 [ 73.951293][ T2980] ? remove_proc_entry+0x350/0x410 [ 73.956400][ T2980] panic+0x2cb/0x75a [ 73.960307][ T2980] ? __warn_printk+0xf3/0xf3 [ 73.964888][ T2980] ? remove_proc_entry+0x367/0x410 [ 73.970004][ T2980] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.976246][ T2980] ? __warn.cold+0x5/0x47 [ 73.980558][ T2980] ? __warn+0xe8/0x1d0 [ 73.984609][ T2980] ? remove_proc_entry+0x367/0x410 [ 73.989706][ T2980] __warn.cold+0x20/0x47 [ 73.993949][ T2980] ? vprintk_emit+0x1ea/0x700 [ 73.998608][ T2980] ? remove_proc_entry+0x367/0x410 [ 74.003704][ T2980] report_bug+0x263/0x2b0 [ 74.008035][ T2980] do_error_trap+0x11b/0x200 [ 74.012612][ T2980] do_invalid_op+0x37/0x50 [ 74.017014][ T2980] ? remove_proc_entry+0x367/0x410 [ 74.022105][ T2980] invalid_op+0x14/0x20 [ 74.026357][ T2980] RIP: 0010:remove_proc_entry+0x367/0x410 [ 74.032067][ T2980] 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 85 97 87 48 c7 c7 c0 84 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 [ 74.051653][ T2980] RSP: 0018:ffff88809f2afb10 EFLAGS: 00010286 [ 74.057702][ T2980] RAX: 0000000000000000 RBX: 1ffff11013e55f64 RCX: 0000000000000000 [ 74.065669][ T2980] RDX: 0000000000000000 RSI: ffffffff815b20a6 RDI: ffffed1013e55f54 [ 74.073629][ T2980] RBP: ffff88809f2afbc0 R08: ffff88809f2dc5c0 R09: ffff88809f2dceb0 [ 74.081584][ T2980] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888086151640 [ 74.089539][ T2980] R13: ffff88809ad03080 R14: ffff8880861516f0 R15: dffffc0000000000 [ 74.097512][ T2980] ? vprintk_func+0x86/0x189 [ 74.102132][ T2980] ? proc_readdir+0x80/0x80 [ 74.106653][ T2980] ? cache_destroy_net+0x3c/0x50 [ 74.111605][ T2980] rpc_proc_exit+0x3e/0x50 [ 74.116005][ T2980] sunrpc_exit_net+0x187/0x2d0 [ 74.120748][ T2980] ? xdr_free_bvec+0x70/0x70 [ 74.125344][ T2980] ops_exit_list.isra.0+0xb0/0x160 [ 74.130443][ T2980] cleanup_net+0x3fb/0x960 [ 74.134843][ T2980] ? netns_install+0x1d0/0x1d0 [ 74.139596][ T2980] process_one_work+0x98e/0x1790 [ 74.144532][ T2980] ? pwq_dec_nr_in_flight+0x320/0x320 [ 74.149885][ T2980] ? lock_acquire+0x16f/0x3f0 [ 74.154553][ T2980] worker_thread+0x98/0xe40 [ 74.159060][ T2980] ? trace_hardirqs_on+0x67/0x230 [ 74.164082][ T2980] kthread+0x357/0x430 [ 74.168241][ T2980] ? process_one_work+0x1790/0x1790 [ 74.173419][ T2980] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 74.179644][ T2980] ret_from_fork+0x3a/0x50 [ 74.184943][ T2980] Kernel Offset: disabled [ 74.189375][ T2980] Rebooting in 86400 seconds..