[ 40.785486] audit: type=1800 audit(1547598471.806:31): pid=7757 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 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 mcstransd: [ 41.094621] audit: type=1800 audit(1547598472.166:32): pid=7757 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting file context maintaining daemon: restorecond[?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 '10.128.0.146' (ECDSA) to the list of known hosts. syzkaller login: [ 49.640109] kauditd_printk_skb: 3 callbacks suppressed [ 49.640123] audit: type=1400 audit(1547598480.716:36): avc: denied { map } for pid=7947 comm="syz-executor971" path="/root/syz-executor971197104" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 49.690279] IPVS: ftp: loaded support on port[0] = 21 [ 49.712705] IPVS: ftp: loaded support on port[0] = 21 [ 49.713390] IPVS: ftp: loaded support on port[0] = 21 [ 49.732644] IPVS: ftp: loaded support on port[0] = 21 [ 49.747511] IPVS: ftp: loaded support on port[0] = 21 [ 49.754056] IPVS: ftp: loaded support on port[0] = 21 [ 49.778157] audit: type=1400 audit(1547598480.856:37): avc: denied { associate } for pid=7955 comm="syz-executor971" name="syz5" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 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 executing program executing program executing program [ 51.264227] cgroup: fork rejected by pids controller in /syz5 [ 51.285811] cgroup: fork rejected by pids controller in /syz0 [ 51.293931] cgroup: fork rejected by pids controller in /syz2 executing program executing program executing program [ 51.322296] cgroup: fork rejected by pids controller in /syz3 executing program executing program executing program executing program executing program executing program [ 51.372591] cgroup: fork rejected by pids controller in /syz4 [ 51.379545] cgroup: fork rejected by pids controller in /syz1 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 [ 53.266609] WARNING: CPU: 1 PID: 33 at net/ipv6/xfrm6_tunnel.c:351 xfrm6_tunnel_net_exit+0x2cb/0x500 [ 53.276122] Kernel panic - not syncing: panic_on_warn set ... [ 53.281990] CPU: 1 PID: 33 Comm: kworker/u4:2 Not tainted 5.0.0-rc2+ #27 [ 53.288805] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.298145] Workqueue: netns cleanup_net [ 53.302182] Call Trace: [ 53.304751] dump_stack+0x1db/0x2d0 [ 53.308362] ? dump_stack_print_info.cold+0x20/0x20 [ 53.313365] ? xfrm6_tunnel_net_exit+0x250/0x500 [ 53.318118] panic+0x2cb/0x65c [ 53.321295] ? add_taint.cold+0x16/0x16 [ 53.325268] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 53.330008] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.335530] ? __probe_kernel_read+0x1f4/0x250 [ 53.340122] ? __warn.cold+0x5/0x48 [ 53.343729] ? __warn+0xe8/0x1d0 [ 53.347100] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 53.351842] __warn.cold+0x20/0x48 [ 53.355365] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 53.360116] report_bug+0x263/0x2b0 [ 53.363729] do_error_trap+0x11b/0x200 [ 53.367602] do_invalid_op+0x37/0x50 [ 53.371299] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 53.376040] invalid_op+0x14/0x20 [ 53.379492] RIP: 0010:xfrm6_tunnel_net_exit+0x2cb/0x500 [ 53.384838] 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 6c a0 fa 4d 85 ff 74 92 e8 e5 6a a0 fa <0f> 0b eb 89 48 8b 9d 30 ff ff ff 49 8d 46 a0 45 31 e4 49 89 c5 48 [ 53.403722] RSP: 0018:ffff8880a96c7748 EFLAGS: 00010293 [ 53.409067] RAX: ffff8880a96b6140 RBX: ffff88808ad6e378 RCX: ffffffff86e18c71 [ 53.416336] RDX: 0000000000000000 RSI: ffffffff86e18c7b RDI: 0000000000000007 [ 53.423595] RBP: ffff8880a96c7828 R08: ffff8880a96b6140 R09: ffff8880a96b6a30 [ 53.430845] R10: ffff8880a96b6140 R11: 0000000000000000 R12: 00000000000000ff [ 53.438110] R13: ffffed10152d8ef0 R14: ffff8880a96c7800 R15: ffff888091a09f80 [ 53.445374] ? xfrm6_tunnel_net_exit+0x2c1/0x500 [ 53.450112] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 53.454854] ? xfrm6_tunnel_net_exit+0x2cb/0x500 [ 53.459594] ? xfrm6_tunnel_alloc_spi+0xc60/0xc60 [ 53.464418] ? xt_proto_init+0x850/0x850 [ 53.468475] ? calibrate_delay+0xd35/0x1056 [ 53.472797] ? inet_frag_destroy_rcu+0xf0/0xf0 [ 53.477380] ? xfrm6_tunnel_alloc_spi+0xc60/0xc60 [ 53.482220] ops_exit_list.isra.0+0xb0/0x160 [ 53.486613] cleanup_net+0x51d/0xb10 [ 53.490311] ? find_held_lock+0x35/0x120 [ 53.494368] ? netns_install+0x1d0/0x1d0 [ 53.498413] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.503931] ? check_preemption_disabled+0x48/0x290 [ 53.508936] ? __lock_is_held+0xb6/0x140 [ 53.512986] process_one_work+0xd0c/0x1ce0 [ 53.517205] ? preempt_notifier_register+0x200/0x200 [ 53.522292] ? __switch_to_asm+0x34/0x70 [ 53.526344] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 53.530996] ? __schedule+0x89f/0x1e60 [ 53.534887] ? pci_mmcfg_check_reserved+0x170/0x170 [ 53.539895] ? lockdep_hardirqs_on+0x415/0x5d0 [ 53.544478] ? worker_thread+0x3b7/0x14a0 [ 53.548609] ? find_held_lock+0x35/0x120 [ 53.552654] ? lock_acquire+0x1db/0x570 [ 53.556614] ? worker_thread+0x3cd/0x14a0 [ 53.560759] ? kasan_check_read+0x11/0x20 [ 53.564911] ? do_raw_spin_lock+0x156/0x360 [ 53.569217] ? lock_release+0xc40/0xc40 [ 53.573176] ? rwlock_bug.part.0+0x90/0x90 [ 53.577395] ? trace_hardirqs_on_caller+0x310/0x310 [ 53.582400] worker_thread+0x143/0x14a0 [ 53.586381] ? process_one_work+0x1ce0/0x1ce0 [ 53.590861] ? __kthread_parkme+0xc3/0x1b0 [ 53.595079] ? lock_acquire+0x1db/0x570 [ 53.599039] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 53.604128] ? lockdep_hardirqs_on+0x415/0x5d0 [ 53.608706] ? trace_hardirqs_on+0xbd/0x310 [ 53.613010] ? __kthread_parkme+0xc3/0x1b0 [ 53.617230] ? trace_hardirqs_off_caller+0x300/0x300 [ 53.622319] ? do_raw_spin_trylock+0x270/0x270 [ 53.626880] ? schedule+0x108/0x350 [ 53.630492] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 53.635587] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 53.641103] ? __kthread_parkme+0xfb/0x1b0 [ 53.645324] kthread+0x357/0x430 [ 53.648672] ? process_one_work+0x1ce0/0x1ce0 [ 53.653148] ? kthread_stop+0x920/0x920 [ 53.657104] ret_from_fork+0x3a/0x50 [ 53.662056] Kernel Offset: disabled [ 53.665772] Rebooting in 86400 seconds..