[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 61.088114][ T27] audit: type=1800 audit(1557815595.759:25): pid=8631 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 61.126261][ T27] audit: type=1800 audit(1557815595.759:26): pid=8631 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 61.158089][ T27] audit: type=1800 audit(1557815595.759:27): pid=8631 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 '10.128.0.23' (ECDSA) to the list of known hosts. 2019/05/14 06:33:25 fuzzer started 2019/05/14 06:33:29 connecting to host at 10.128.0.26:46677 2019/05/14 06:33:29 checking machine... 2019/05/14 06:33:29 checking revisions... 2019/05/14 06:33:29 testing simple program... syzkaller login: [ 74.705355][ T8798] IPVS: ftp: loaded support on port[0] = 21 2019/05/14 06:33:29 building call list... [ 76.055444][ T8803] can: request_module (can-proto-0) failed. [ 76.407242][ T2630] ------------[ cut here ]------------ [ 76.412981][ T2630] remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'use-gss-proxy' [ 76.423919][ T2630] WARNING: CPU: 1 PID: 2630 at fs/proc/generic.c:681 remove_proc_entry+0x367/0x410 [ 76.433613][ T2630] Kernel panic - not syncing: panic_on_warn set ... [ 76.440514][ T2630] CPU: 1 PID: 2630 Comm: kworker/u4:4 Not tainted 5.1.0-next-20190514 #10 [ 76.449606][ T2630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.460553][ T2630] Workqueue: netns cleanup_net [ 76.465823][ T2630] Call Trace: [ 76.469661][ T2630] dump_stack+0x172/0x1f0 [ 76.474168][ T2630] ? remove_proc_entry+0x300/0x410 [ 76.479394][ T2630] panic+0x2cb/0x75a [ 76.483289][ T2630] ? __warn_printk+0xf3/0xf3 [ 76.487964][ T2630] ? remove_proc_entry+0x367/0x410 [ 76.493333][ T2630] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.499668][ T2630] ? __warn.cold+0x5/0x47 [ 76.504301][ T2630] ? __warn+0xe8/0x1d0 [ 76.508395][ T2630] ? remove_proc_entry+0x367/0x410 [ 76.513700][ T2630] __warn.cold+0x20/0x47 [ 76.518260][ T2630] ? vprintk_emit+0x1ea/0x700 [ 76.523214][ T2630] ? remove_proc_entry+0x367/0x410 [ 76.528436][ T2630] report_bug+0x263/0x2b0 [ 76.532883][ T2630] do_error_trap+0x11b/0x200 [ 76.537842][ T2630] do_invalid_op+0x37/0x50 [ 76.542401][ T2630] ? remove_proc_entry+0x367/0x410 [ 76.547652][ T2630] invalid_op+0x14/0x20 [ 76.551926][ T2630] RIP: 0010:remove_proc_entry+0x367/0x410 [ 76.557726][ T2630] 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 77 b0 6d ff <0f> 0b e9 4b fe ff ff e8 1d 53 d4 ff e9 b5 fd ff ff e8 d3 53 d4 ff [ 76.577866][ T2630] RSP: 0018:ffff8880a0897b10 EFLAGS: 00010286 [ 76.584393][ T2630] RAX: 0000000000000000 RBX: 1ffff11014112f64 RCX: 0000000000000000 [ 76.592901][ T2630] RDX: 0000000000000000 RSI: ffffffff815b20a6 RDI: ffffed1014112f54 [ 76.600956][ T2630] RBP: ffff8880a0897bc0 R08: ffff8880a0e58540 R09: ffff8880a0e58e30 [ 76.609460][ T2630] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808e4bca40 [ 76.617950][ T2630] R13: ffff88809af7e080 R14: ffff88808e4bcaf0 R15: dffffc0000000000 [ 76.626248][ T2630] ? vprintk_func+0x86/0x189 [ 76.630931][ T2630] ? proc_readdir+0x80/0x80 [ 76.635631][ T2630] ? cache_destroy_net+0x3c/0x50 [ 76.640663][ T2630] rpc_proc_exit+0x3e/0x50 [ 76.645424][ T2630] sunrpc_exit_net+0x187/0x2d0 [ 76.650182][ T2630] ? xdr_free_bvec+0x70/0x70 [ 76.654774][ T2630] ops_exit_list.isra.0+0xb0/0x160 [ 76.660080][ T2630] cleanup_net+0x3fb/0x960 [ 76.665048][ T2630] ? netns_install+0x1d0/0x1d0 [ 76.670173][ T2630] process_one_work+0x98e/0x1790 [ 76.675215][ T2630] ? pwq_dec_nr_in_flight+0x320/0x320 [ 76.680682][ T2630] ? lock_acquire+0x16f/0x3f0 [ 76.685446][ T2630] worker_thread+0x98/0xe40 [ 76.690265][ T2630] ? trace_hardirqs_on+0x67/0x230 [ 76.695452][ T2630] kthread+0x357/0x430 [ 76.699664][ T2630] ? process_one_work+0x1790/0x1790 [ 76.705066][ T2630] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 76.711447][ T2630] ret_from_fork+0x3a/0x50 [ 76.717767][ T2630] Kernel Offset: disabled [ 76.722315][ T2630] Rebooting in 86400 seconds..