[ 34.673848] audit: type=1800 audit(1548250152.763:27): pid=7451 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 34.702077] audit: type=1800 audit(1548250152.763:28): pid=7451 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 35.259621] audit: type=1800 audit(1548250153.413:29): pid=7451 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 35.280078] audit: type=1800 audit(1548250153.413:30): pid=7451 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.217' (ECDSA) to the list of known hosts. syzkaller login: [ 43.876050] IPVS: ftp: loaded support on port[0] = 21 [ 43.876073] IPVS: ftp: loaded support on port[0] = 21 [ 43.889954] IPVS: ftp: loaded support on port[0] = 21 [ 43.893915] IPVS: ftp: loaded support on port[0] = 21 [ 43.902166] IPVS: ftp: loaded support on port[0] = 21 [ 43.904476] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 44.847463] cgroup: fork rejected by pids controller in /syz1 [ 44.855836] cgroup: fork rejected by pids controller in /syz4 executing program executing program executing program executing program executing program executing program [ 44.917448] cgroup: fork rejected by pids controller in /syz5 [ 44.919207] cgroup: fork rejected by pids controller in /syz0 [ 44.931721] cgroup: fork rejected by pids controller in /syz2 [ 44.956379] cgroup: fork rejected by pids controller in /syz3 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 46.708435] WARNING: CPU: 1 PID: 3058 at net/ipv6/xfrm6_tunnel.c:351 xfrm6_tunnel_net_exit+0x2cb/0x500 [ 46.718125] Kernel panic - not syncing: panic_on_warn set ... [ 46.723992] CPU: 1 PID: 3058 Comm: kworker/u4:4 Not tainted 5.0.0-rc3+ #39 [ 46.730983] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.740326] Workqueue: netns cleanup_net [ 46.744362] Call Trace: [ 46.746945] dump_stack+0x1db/0x2d0 [ 46.750574] ? dump_stack_print_info.cold+0x20/0x20 [ 46.755577] ? xfrm6_tunnel_net_exit+0x1e0/0x500 [ 46.760635] panic+0x2cb/0x65c [ 46.763814] ? add_taint.cold+0x16/0x16 [ 46.767786] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 46.772531] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.778052] ? __probe_kernel_read+0x1f4/0x250 [ 46.782617] ? __warn.cold+0x5/0x48 [ 46.786225] ? __warn+0xe8/0x1d0 [ 46.789577] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 46.794313] __warn.cold+0x20/0x48 [ 46.797835] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 46.803005] report_bug+0x263/0x2b0 [ 46.806617] do_error_trap+0x11b/0x200 [ 46.810492] do_invalid_op+0x37/0x50 [ 46.814185] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 46.819010] invalid_op+0x14/0x20 [ 46.822447] RIP: 0010:xfrm6_tunnel_net_exit+0x2cb/0x500 [ 46.827794] Code: 80 7d 00 00 4c 8b 3b 0f 85 f4 01 00 00 4d 89 7e 80 31 ff 4c 89 fe 41 c6 45 00 f8 e8 8f 28 a0 fa 4d 85 ff 74 92 e8 e5 26 a0 fa <0f> 0b eb 89 48 8b 9d 30 ff ff ff 49 8d 46 a0 45 31 e4 49 89 c5 48 [ 46.846681] RSP: 0018:ffff88809dd97748 EFLAGS: 00010293 [ 46.852050] RAX: ffff88809dd88380 RBX: ffff88808d036378 RCX: ffffffff86e1d9e1 [ 46.859451] RDX: 0000000000000000 RSI: ffffffff86e1d9eb RDI: 0000000000000007 [ 46.866875] RBP: ffff88809dd97828 R08: ffff88809dd88380 R09: ffff88809dd88c70 [ 46.874497] R10: ffff88809dd88380 R11: 0000000000000000 R12: 00000000000000ff [ 46.881761] R13: ffffed1013bb2ef0 R14: ffff88809dd97800 R15: ffff88808b0a8e80 [ 46.889025] ? xfrm6_tunnel_net_exit+0x2c1/0x500 [ 46.893779] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 46.898520] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 46.903296] ? xfrm6_tunnel_alloc_spi+0xc60/0xc60 [ 46.908121] ? xt_proto_init+0x850/0x850 [ 46.912170] ? calibrate_delay+0xd35/0x1056 [ 46.916476] ? inet_frag_destroy_rcu+0xf0/0xf0 [ 46.921043] ? xfrm6_tunnel_alloc_spi+0xc60/0xc60 [ 46.925873] ops_exit_list.isra.0+0xb0/0x160 [ 46.930263] cleanup_net+0x51d/0xb10 [ 46.933958] ? find_held_lock+0x35/0x120 [ 46.938005] ? netns_install+0x1d0/0x1d0 [ 46.942043] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.947560] ? check_preemption_disabled+0x48/0x290 [ 46.952558] ? __lock_is_held+0xb6/0x140 [ 46.956615] process_one_work+0xd0c/0x1ce0 [ 46.960839] ? preempt_notifier_register+0x200/0x200 [ 46.965918] ? __switch_to_asm+0x34/0x70 [ 46.969968] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 46.974616] ? __schedule+0x89f/0x1e60 [ 46.978492] ? pci_mmcfg_check_reserved+0x170/0x170 [ 46.983808] ? lockdep_hardirqs_on+0x415/0x5d0 [ 46.988368] ? worker_thread+0x3b7/0x14a0 [ 46.992489] ? find_held_lock+0x35/0x120 [ 46.996533] ? lock_acquire+0x1db/0x570 [ 47.000488] ? worker_thread+0x3cd/0x14a0 [ 47.004617] ? kasan_check_read+0x11/0x20 [ 47.008746] ? do_raw_spin_lock+0x156/0x360 [ 47.013042] ? lock_release+0xc40/0xc40 [ 47.016996] ? rwlock_bug.part.0+0x90/0x90 [ 47.021207] ? trace_hardirqs_on_caller+0x310/0x310 [ 47.026206] worker_thread+0x143/0x14a0 [ 47.030171] ? process_one_work+0x1ce0/0x1ce0 [ 47.034734] ? __kthread_parkme+0xc3/0x1b0 [ 47.038947] ? lock_acquire+0x1db/0x570 [ 47.042899] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 47.047980] ? lockdep_hardirqs_on+0x415/0x5d0 [ 47.052550] ? trace_hardirqs_on+0xbd/0x310 [ 47.056866] ? __kthread_parkme+0xc3/0x1b0 [ 47.061085] ? trace_hardirqs_off_caller+0x300/0x300 [ 47.066167] ? do_raw_spin_trylock+0x270/0x270 [ 47.070726] ? schedule+0x108/0x350 [ 47.074333] ? do_raw_spin_trylock+0x270/0x270 [ 47.078919] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 47.084026] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 47.089561] ? __kthread_parkme+0xfb/0x1b0 [ 47.094122] kthread+0x357/0x430 [ 47.097508] ? process_one_work+0x1ce0/0x1ce0 [ 47.101985] ? kthread_stop+0x920/0x920 [ 47.105940] ret_from_fork+0x3a/0x50 [ 47.110918] Kernel Offset: disabled [ 47.114637] Rebooting in 86400 seconds..