[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 81.557063][ T27] audit: type=1800 audit(1579668486.587:25): pid=9559 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 81.576999][ T27] audit: type=1800 audit(1579668486.597:26): pid=9559 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 81.629543][ T27] audit: type=1800 audit(1579668486.597:27): pid=9559 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 '10.128.0.48' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 91.209308][ T2992] ------------[ cut here ]------------ [ 91.214937][ T2992] name 'šþ/]uwo,"¹cðacýµ‚•´[²$ð“5x~µsþ&æ¡tw}ùª™zºcp(' [ 91.222513][ T2992] WARNING: CPU: 0 PID: 2992 at fs/proc/generic.c:178 __xlate_proc_name+0xe7/0x110 [ 91.231743][ T2992] Kernel panic - not syncing: panic_on_warn set ... [ 91.238334][ T2992] CPU: 0 PID: 2992 Comm: kworker/0:84 Not tainted 5.5.0-rc7-syzkaller #0 [ 91.246727][ T2992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.256776][ T2992] Workqueue: afs afs_manage_cell [ 91.261712][ T2992] Call Trace: [ 91.265003][ T2992] dump_stack+0x197/0x210 [ 91.269335][ T2992] ? __xlate_proc_name+0x50/0x110 [ 91.274357][ T2992] panic+0x2e3/0x75c [ 91.278241][ T2992] ? add_taint.cold+0x16/0x16 [ 91.282916][ T2992] ? __kasan_check_write+0x14/0x20 [ 91.288146][ T2992] ? __warn.cold+0x14/0x3e [ 91.292611][ T2992] ? __warn+0xd9/0x1cf [ 91.296681][ T2992] ? __xlate_proc_name+0xe7/0x110 [ 91.301694][ T2992] __warn.cold+0x2f/0x3e [ 91.305935][ T2992] ? __xlate_proc_name+0xe7/0x110 [ 91.310949][ T2992] report_bug+0x289/0x300 [ 91.315267][ T2992] do_error_trap+0x11b/0x200 [ 91.319844][ T2992] do_invalid_op+0x37/0x50 [ 91.324283][ T2992] ? __xlate_proc_name+0xe7/0x110 [ 91.329330][ T2992] invalid_op+0x23/0x30 [ 91.333527][ T2992] RIP: 0010:__xlate_proc_name+0xe7/0x110 [ 91.339188][ T2992] Code: af 09 91 ff 44 89 e0 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 98 09 91 ff 4c 89 fe 48 c7 c7 40 07 39 88 e8 88 b9 61 ff <0f> 0b 41 bc fe ff ff ff eb cb 4c 89 f7 e8 b7 c9 ce ff e9 3d ff ff [ 91.358828][ T2992] RSP: 0018:ffffc90008eaf9d0 EFLAGS: 00010282 [ 91.364892][ T2992] RAX: 0000000000000000 RBX: ffff8880a78dd13b RCX: 0000000000000000 [ 91.372906][ T2992] RDX: 0000000000000000 RSI: ffffffff815e5326 RDI: fffff520011d5f2c [ 91.380909][ T2992] RBP: ffffc90008eafa00 R08: ffff88809eac8080 R09: fffffbfff165e79e [ 91.388865][ T2992] R10: fffffbfff165e79d R11: ffffffff8b2f3cef R12: 0000000000000000 [ 91.396819][ T2992] R13: ffff8880a78dd139 R14: ffffc90008eafb08 R15: ffff8880a78dd139 [ 91.404791][ T2992] ? vprintk_func+0x86/0x189 [ 91.409371][ T2992] __proc_create+0xac/0x860 [ 91.413867][ T2992] ? pde_free+0x110/0x110 [ 91.418185][ T2992] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 91.424325][ T2992] proc_mkdir_data+0xbc/0x1b0 [ 91.428998][ T2992] ? proc_symlink+0x1c0/0x1c0 [ 91.433669][ T2992] ? fscache_free_cookie+0x110/0x1c0 [ 91.438937][ T2992] afs_proc_cell_setup+0x95/0x190 [ 91.443968][ T2992] afs_manage_cell+0x54b/0x1410 [ 91.448825][ T2992] ? afs_put_cell.part.0+0x180/0x180 [ 91.454113][ T2992] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 91.459645][ T2992] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 91.465629][ T2992] ? trace_hardirqs_on+0x67/0x240 [ 91.470656][ T2992] process_one_work+0x9af/0x1740 [ 91.475580][ T2992] ? pwq_dec_nr_in_flight+0x320/0x320 [ 91.480952][ T2992] ? lock_acquire+0x190/0x410 [ 91.485614][ T2992] worker_thread+0x98/0xe40 [ 91.490119][ T2992] ? trace_hardirqs_on+0x67/0x240 [ 91.495132][ T2992] kthread+0x361/0x430 [ 91.499198][ T2992] ? process_one_work+0x1740/0x1740 [ 91.504394][ T2992] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 91.510137][ T2992] ret_from_fork+0x24/0x30 [ 91.516252][ T2992] Kernel Offset: disabled [ 91.520654][ T2992] Rebooting in 86400 seconds..