[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 67.912590][ T26] audit: type=1800 audit(1557960735.709:25): pid=9139 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 67.943585][ T26] audit: type=1800 audit(1557960735.709:26): pid=9139 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 67.991593][ T26] audit: type=1800 audit(1557960735.719:27): pid=9139 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 '10.128.0.139' (ECDSA) to the list of known hosts. 2019/05/15 22:52:26 fuzzer started 2019/05/15 22:52:30 connecting to host at 10.128.0.26:34667 2019/05/15 22:52:30 checking machine... 2019/05/15 22:52:30 checking revisions... 2019/05/15 22:52:30 testing simple program... syzkaller login: [ 82.544764][ T9306] IPVS: ftp: loaded support on port[0] = 21 2019/05/15 22:52:30 building call list... [ 83.970671][ T9311] can: request_module (can-proto-0) failed. [ 84.253408][ T7] ------------[ cut here ]------------ [ 84.259194][ T7] remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'use-gss-proxy' [ 84.269911][ T7] WARNING: CPU: 1 PID: 7 at fs/proc/generic.c:681 remove_proc_entry+0x367/0x410 [ 84.279158][ T7] Kernel panic - not syncing: panic_on_warn set ... [ 84.285873][ T7] CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 5.1.0-next-20190515 #14 [ 84.294328][ T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.304400][ T7] Workqueue: netns cleanup_net [ 84.309449][ T7] Call Trace: [ 84.312757][ T7] dump_stack+0x172/0x1f0 [ 84.317122][ T7] ? remove_proc_entry+0x340/0x410 [ 84.322321][ T7] panic+0x2cb/0x75a [ 84.326250][ T7] ? __warn_printk+0xf3/0xf3 [ 84.330858][ T7] ? remove_proc_entry+0x367/0x410 [ 84.335971][ T7] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.342235][ T7] ? __warn.cold+0x5/0x47 [ 84.346691][ T7] ? __warn+0xe8/0x1d0 [ 84.350876][ T7] ? remove_proc_entry+0x367/0x410 [ 84.356009][ T7] __warn.cold+0x20/0x47 [ 84.360288][ T7] ? vprintk_emit+0x1ea/0x700 [ 84.365086][ T7] ? remove_proc_entry+0x367/0x410 [ 84.370209][ T7] report_bug+0x263/0x2b0 [ 84.374640][ T7] do_error_trap+0x11b/0x200 [ 84.379261][ T7] do_invalid_op+0x37/0x50 [ 84.383778][ T7] ? remove_proc_entry+0x367/0x410 [ 84.388894][ T7] invalid_op+0x14/0x20 [ 84.393079][ T7] RIP: 0010:remove_proc_entry+0x367/0x410 [ 84.398809][ T7] 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 [ 84.418533][ T7] RSP: 0018:ffff8880a98a7b10 EFLAGS: 00010286 [ 84.424613][ T7] RAX: 0000000000000000 RBX: 1ffff11015314f64 RCX: 0000000000000000 [ 84.432591][ T7] RDX: 0000000000000000 RSI: ffffffff815b2446 RDI: ffffed1015314f54 [ 84.440572][ T7] RBP: ffff8880a98a7bc0 R08: ffff8880a98981c0 R09: ffff8880a9898ab0 [ 84.448672][ T7] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809fc9dcc0 [ 84.456661][ T7] R13: ffff8880a3ec8e40 R14: ffff88809fc9dd70 R15: dffffc0000000000 [ 84.464673][ T7] ? vprintk_func+0x86/0x189 [ 84.469307][ T7] ? proc_readdir+0x80/0x80 [ 84.473978][ T7] ? cache_destroy_net+0x3c/0x50 [ 84.478933][ T7] rpc_proc_exit+0x3e/0x50 [ 84.483357][ T7] sunrpc_exit_net+0x187/0x2d0 [ 84.488133][ T7] ? xdr_free_bvec+0x70/0x70 [ 84.492809][ T7] ops_exit_list.isra.0+0xb0/0x160 [ 84.497957][ T7] cleanup_net+0x3fb/0x960 [ 84.502652][ T7] ? netns_install+0x1d0/0x1d0 [ 84.507576][ T7] process_one_work+0x98e/0x1790 [ 84.512542][ T7] ? pwq_dec_nr_in_flight+0x320/0x320 [ 84.518272][ T7] ? lock_acquire+0x16f/0x3f0 [ 84.523230][ T7] worker_thread+0x98/0xe40 [ 84.527803][ T7] kthread+0x357/0x430 [ 84.532083][ T7] ? process_one_work+0x1790/0x1790 [ 84.537926][ T7] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 84.544268][ T7] ret_from_fork+0x3a/0x50 [ 84.550964][ T7] Kernel Offset: disabled [ 84.555452][ T7] Rebooting in 86400 seconds..