[ 40.238266] audit: type=1800 audit(1548039386.698:26): pid=7788 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 40.265865] audit: type=1800 audit(1548039386.698:27): pid=7788 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 40.296757] audit: type=1800 audit(1548039386.698:28): pid=7788 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. [....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[FAIL8[?25h[?0c failed! Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts. syzkaller login: [ 146.459398] IPVS: ftp: loaded support on port[0] = 21 [ 146.461500] IPVS: ftp: loaded support on port[0] = 21 [ 146.476919] IPVS: ftp: loaded support on port[0] = 21 [ 146.477526] IPVS: ftp: loaded support on port[0] = 21 [ 146.486600] IPVS: ftp: loaded support on port[0] = 21 [ 146.492089] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program [ 148.054175] WARNING: CPU: 0 PID: 21 at net/ipv6/xfrm6_tunnel.c:351 xfrm6_tunnel_net_exit+0x2cb/0x500 [ 148.063748] Kernel panic - not syncing: panic_on_warn set ... [ 148.069628] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.0.0-rc2+ #35 [ 148.076466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 148.085912] Workqueue: netns cleanup_net [ 148.089957] Call Trace: [ 148.092552] dump_stack+0x1db/0x2d0 [ 148.096167] ? dump_stack_print_info.cold+0x20/0x20 [ 148.101173] ? xfrm6_tunnel_net_exit+0x1f0/0x500 [ 148.105921] panic+0x2cb/0x65c [ 148.109096] ? add_taint.cold+0x16/0x16 [ 148.113055] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 148.117797] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 148.123522] ? __probe_kernel_read+0x1f4/0x250 [ 148.128086] ? __warn.cold+0x5/0x48 [ 148.131811] ? __warn+0xe8/0x1d0 [ 148.135168] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 148.139908] __warn.cold+0x20/0x48 [ 148.143453] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 148.148214] report_bug+0x263/0x2b0 [ 148.151853] do_error_trap+0x11b/0x200 [ 148.155860] do_invalid_op+0x37/0x50 [ 148.159566] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 148.164417] invalid_op+0x14/0x20 [ 148.167881] RIP: 0010:xfrm6_tunnel_net_exit+0x2cb/0x500 [ 148.173243] 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 bf 53 a0 fa 4d 85 ff 74 92 e8 15 52 a0 fa <0f> 0b eb 89 48 8b 9d 30 ff ff ff 49 8d 46 a0 45 31 e4 49 89 c5 48 [ 148.192132] RSP: 0018:ffff8880a95c7748 EFLAGS: 00010293 [ 148.197508] RAX: ffff8880a95ba580 RBX: ffff88809d809ff8 RCX: ffffffff86e1acd1 [ 148.204980] RDX: 0000000000000000 RSI: ffffffff86e1acdb RDI: 0000000000000007 [ 148.212256] RBP: ffff8880a95c7828 R08: ffff8880a95ba580 R09: ffff8880a95bae70 [ 148.219511] R10: ffff8880a95ba580 R11: 0000000000000000 R12: 00000000000000ff [ 148.226772] R13: ffffed10152b8ef0 R14: ffff8880a95c7800 R15: ffff88808e662780 [ 148.234049] ? xfrm6_tunnel_net_exit+0x2c1/0x500 [ 148.238788] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 148.243528] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 148.248266] ? xfrm6_tunnel_alloc_spi+0xc60/0xc60 [ 148.253090] ? xt_proto_init+0x850/0x850 [ 148.257152] ? calibrate_delay+0xd35/0x1056 [ 148.261459] ? inet_frag_destroy_rcu+0xf0/0xf0 [ 148.266092] ? xfrm6_tunnel_alloc_spi+0xc60/0xc60 [ 148.270941] ops_exit_list.isra.0+0xb0/0x160 [ 148.275367] cleanup_net+0x51d/0xb10 [ 148.279060] ? find_held_lock+0x35/0x120 [ 148.283112] ? netns_install+0x1d0/0x1d0 [ 148.287169] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 148.292699] ? check_preemption_disabled+0x48/0x290 [ 148.297707] ? __lock_is_held+0xb6/0x140 [ 148.301769] process_one_work+0xd0c/0x1ce0 [ 148.305990] ? preempt_notifier_register+0x200/0x200 [ 148.311189] ? __switch_to_asm+0x34/0x70 [ 148.315255] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 148.319918] ? __schedule+0x89f/0x1e60 [ 148.323793] ? pci_mmcfg_check_reserved+0x170/0x170 [ 148.328923] ? worker_thread+0x3b7/0x14a0 [ 148.333157] ? find_held_lock+0x35/0x120 [ 148.337207] ? lock_acquire+0x1db/0x570 [ 148.341162] ? worker_thread+0x3cd/0x14a0 [ 148.345300] ? kasan_check_read+0x11/0x20 [ 148.349474] ? do_raw_spin_lock+0x156/0x360 [ 148.353814] ? lock_release+0xc40/0xc40 [ 148.357775] ? rwlock_bug.part.0+0x90/0x90 [ 148.362004] ? trace_hardirqs_on_caller+0x310/0x310 [ 148.367034] worker_thread+0x143/0x14a0 [ 148.370998] ? process_one_work+0x1ce0/0x1ce0 [ 148.375482] ? __kthread_parkme+0xc3/0x1b0 [ 148.379703] ? lock_acquire+0x1db/0x570 [ 148.383664] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 148.388766] ? lockdep_hardirqs_on+0x415/0x5d0 [ 148.393328] ? trace_hardirqs_on+0xbd/0x310 [ 148.397650] ? __kthread_parkme+0xc3/0x1b0 [ 148.401868] ? trace_hardirqs_off_caller+0x300/0x300 [ 148.406956] ? do_raw_spin_trylock+0x270/0x270 [ 148.411531] ? schedule+0x108/0x350 [ 148.415144] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 148.420545] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 148.426065] ? __kthread_parkme+0xfb/0x1b0 [ 148.430285] kthread+0x357/0x430 [ 148.433635] ? process_one_work+0x1ce0/0x1ce0 [ 148.438227] ? kthread_stop+0x920/0x920 [ 148.442192] ret_from_fork+0x3a/0x50 [ 148.447271] Kernel Offset: disabled [ 148.450985] Rebooting in 86400 seconds..