[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 70.387903][ T26] audit: type=1800 audit(1557918043.708:25): pid=8790 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 70.425098][ T26] audit: type=1800 audit(1557918043.708:26): pid=8790 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 70.478155][ T26] audit: type=1800 audit(1557918043.718:27): pid=8790 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 '10.128.0.25' (ECDSA) to the list of known hosts. 2019/05/15 11:00:54 fuzzer started 2019/05/15 11:00:58 connecting to host at 10.128.0.26:45037 2019/05/15 11:00:58 checking machine... 2019/05/15 11:00:58 checking revisions... 2019/05/15 11:00:58 testing simple program... syzkaller login: [ 85.205599][ T8957] IPVS: ftp: loaded support on port[0] = 21 2019/05/15 11:00:58 building call list... [ 86.553048][ T8945] can: request_module (can-proto-0) failed. [ 86.924742][ T32] ------------[ cut here ]------------ [ 86.930334][ T32] remove_proc_entry: removing non-empty directory 'net/rpc', leaking at least 'use-gss-proxy' [ 86.940889][ T32] WARNING: CPU: 0 PID: 32 at fs/proc/generic.c:681 remove_proc_entry+0x367/0x410 [ 86.950038][ T32] Kernel panic - not syncing: panic_on_warn set ... [ 86.956633][ T32] CPU: 0 PID: 32 Comm: kworker/u4:2 Not tainted 5.1.0-next-20190515 #13 [ 86.964971][ T32] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.975054][ T32] Workqueue: netns cleanup_net [ 86.979810][ T32] Call Trace: [ 86.983125][ T32] dump_stack+0x172/0x1f0 [ 86.987460][ T32] ? remove_proc_entry+0x340/0x410 [ 86.992570][ T32] panic+0x2cb/0x75a [ 86.996501][ T32] ? __warn_printk+0xf3/0xf3 [ 87.001091][ T32] ? remove_proc_entry+0x367/0x410 [ 87.006199][ T32] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 87.012459][ T32] ? __warn.cold+0x5/0x47 [ 87.016806][ T32] ? __warn+0xe8/0x1d0 [ 87.020907][ T32] ? remove_proc_entry+0x367/0x410 [ 87.026131][ T32] __warn.cold+0x20/0x47 [ 87.030387][ T32] ? vprintk_emit+0x1ea/0x700 [ 87.035096][ T32] ? remove_proc_entry+0x367/0x410 [ 87.040744][ T32] report_bug+0x263/0x2b0 [ 87.045177][ T32] do_error_trap+0x11b/0x200 [ 87.049766][ T32] do_invalid_op+0x37/0x50 [ 87.054181][ T32] ? remove_proc_entry+0x367/0x410 [ 87.059289][ T32] invalid_op+0x14/0x20 [ 87.063450][ T32] RIP: 0010:remove_proc_entry+0x367/0x410 [ 87.069203][ T32] 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 [ 87.088860][ T32] RSP: 0018:ffff8880a9af7b10 EFLAGS: 00010286 [ 87.094951][ T32] RAX: 0000000000000000 RBX: 1ffff1101535ef64 RCX: 0000000000000000 [ 87.103012][ T32] RDX: 0000000000000000 RSI: ffffffff815b2446 RDI: ffffed101535ef54 [ 87.111171][ T32] RBP: ffff8880a9af7bc0 R08: ffff8880a9ae8140 R09: ffff8880a9ae8a30 [ 87.119141][ T32] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a4e52000 [ 87.127139][ T32] R13: ffff88809aea5040 R14: ffff8880a4e520b0 R15: dffffc0000000000 [ 87.135675][ T32] ? vprintk_func+0x86/0x189 [ 87.140309][ T32] ? proc_readdir+0x80/0x80 [ 87.144807][ T32] ? cache_destroy_net+0x3c/0x50 [ 87.149750][ T32] rpc_proc_exit+0x3e/0x50 [ 87.154169][ T32] sunrpc_exit_net+0x187/0x2d0 [ 87.158966][ T32] ? xdr_free_bvec+0x70/0x70 [ 87.163560][ T32] ops_exit_list.isra.0+0xb0/0x160 [ 87.168688][ T32] cleanup_net+0x3fb/0x960 [ 87.173103][ T32] ? netns_install+0x1d0/0x1d0 [ 87.177884][ T32] process_one_work+0x98e/0x1790 [ 87.182827][ T32] ? pwq_dec_nr_in_flight+0x320/0x320 [ 87.188193][ T32] ? lock_acquire+0x16f/0x3f0 [ 87.192982][ T32] worker_thread+0x98/0xe40 [ 87.197506][ T32] ? trace_hardirqs_on+0x67/0x230 [ 87.202619][ T32] kthread+0x357/0x430 [ 87.206710][ T32] ? process_one_work+0x1790/0x1790 [ 87.211916][ T32] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 87.218185][ T32] ret_from_fork+0x3a/0x50 [ 87.223902][ T32] Kernel Offset: disabled [ 87.228366][ T32] Rebooting in 86400 seconds..