[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 46.533300][ T26] audit: type=1800 audit(1563575593.301:25): pid=8176 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 46.570392][ T26] audit: type=1800 audit(1563575593.301:26): pid=8176 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 46.606491][ T26] audit: type=1800 audit(1563575593.301:27): pid=8176 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.1.48' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 55.538391][ T8326] netlink: 4 bytes leftover after parsing attributes in process `syz-executor655'. [ 55.547793][ T8326] kasan: CONFIG_KASAN_INLINE enabled [ 55.553186][ T8326] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 55.561401][ T8326] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 55.568319][ T8326] CPU: 1 PID: 8326 Comm: syz-executor655 Not tainted 5.2.0+ #35 [ 55.575917][ T8326] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.586279][ T8326] RIP: 0010:tcf_ife_init+0xff/0x1630 [ 55.591542][ T8326] Code: 00 74 08 4c 89 ef e8 d0 17 8e fb 48 8d 9c 24 a0 00 00 00 48 c7 84 24 50 01 00 00 00 00 00 00 4d 8d 6e 04 4c 89 f0 48 c1 e8 03 <42> 8a 04 38 84 c0 0f 85 ca 12 00 00 41 0f b7 0e 83 c1 fc 48 89 df [ 55.611247][ T8326] RSP: 0018:ffff8880a9246c00 EFLAGS: 00010246 [ 55.617313][ T8326] RAX: 0000000000000000 RBX: ffff8880a9246ca0 RCX: 00000000a9246b03 [ 55.625279][ T8326] RDX: ffff888088ffacd8 RSI: ffffffff88cd6340 RDI: 0000000000000282 [ 55.633236][ T8326] RBP: ffff8880a9246dd8 R08: dffffc0000000000 R09: fffffbfff11fba3d [ 55.641183][ T8326] R10: fffffbfff11fba3d R11: 0000000000000000 R12: 1ffff11015248daa [ 55.649129][ T8326] R13: 0000000000000004 R14: 0000000000000000 R15: dffffc0000000000 [ 55.657079][ T8326] FS: 0000555556895880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 55.665984][ T8326] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.672539][ T8326] CR2: 0000000020000180 CR3: 0000000091464000 CR4: 00000000001406e0 [ 55.680488][ T8326] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.688432][ T8326] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.696376][ T8326] Call Trace: [ 55.699644][ T8326] ? unwind_get_return_address_ptr+0xa0/0xa0 [ 55.705608][ T8326] ? tcf_ife_search+0x40/0x40 [ 55.710273][ T8326] ? tcf_action_init_1+0x2e4/0xd40 [ 55.715370][ T8326] ? __kasan_check_write+0x14/0x20 [ 55.720455][ T8326] ? do_raw_read_unlock+0x42/0xf0 [ 55.725451][ T8326] ? tcf_ife_search+0x40/0x40 [ 55.730110][ T8326] tcf_action_init_1+0x786/0xd40 [ 55.735022][ T8326] ? tcf_action_dump+0x290/0x290 [ 55.740660][ T8326] ? __nla_validate+0x50/0x50 [ 55.745346][ T8326] ? mark_lock+0x152/0x1850 [ 55.749826][ T8326] ? __nla_parse+0x41/0x50 [ 55.754219][ T8326] tcf_action_init+0x183/0x490 [ 55.758975][ T8326] ? tcf_action_init_1+0xd40/0xd40 [ 55.764062][ T8326] ? __nla_validate_parse+0x18f4/0x2010 [ 55.769591][ T8326] ? security_capable+0xa2/0xd0 [ 55.774426][ T8326] tc_ctl_action+0x3ad/0x920 [ 55.778991][ T8326] ? rtnetlink_rcv_msg+0xad2/0xe50 [ 55.784104][ T8326] ? tcf_free_cookie_rcu+0x50/0x50 [ 55.789197][ T8326] ? __mutex_lock_common+0x56e/0x2850 [ 55.794550][ T8326] ? rcu_lock_release+0x9/0x30 [ 55.799308][ T8326] ? tcf_free_cookie_rcu+0x50/0x50 [ 55.804396][ T8326] rtnetlink_rcv_msg+0xb19/0xe50 [ 55.809308][ T8326] ? rtnetlink_bind+0x80/0x80 [ 55.813963][ T8326] ? trace_lock_acquire+0x1d0/0x1d0 [ 55.819146][ T8326] netlink_rcv_skb+0x1f0/0x460 [ 55.823886][ T8326] ? rtnetlink_bind+0x80/0x80 [ 55.828535][ T8326] ? netlink_ack+0xae0/0xae0 [ 55.833097][ T8326] ? check_preemption_disabled+0x47/0x2a0 [ 55.838795][ T8326] rtnetlink_rcv+0x1c/0x20 [ 55.843186][ T8326] netlink_unicast+0x809/0x9a0 [ 55.847921][ T8326] ? netlink_detachskb+0x50/0x50 [ 55.852834][ T8326] ? __check_object_size+0x313/0x400 [ 55.858095][ T8326] ? security_netlink_send+0x94/0xb0 [ 55.863951][ T8326] netlink_sendmsg+0xa70/0xd30 [ 55.868717][ T8326] ? netlink_getsockopt+0x9f0/0x9f0 [ 55.873895][ T8326] ? tomoyo_socket_sendmsg+0x25/0x30 [ 55.879159][ T8326] ? security_socket_sendmsg+0xa0/0xd0 [ 55.884599][ T8326] ? netlink_getsockopt+0x9f0/0x9f0 [ 55.889774][ T8326] ___sys_sendmsg+0x66b/0x9a0 [ 55.894458][ T8326] ? __sys_sendmsg_sock+0x100/0x100 [ 55.899651][ T8326] ? handle_mm_fault+0x10d0/0x6070 [ 55.904741][ T8326] ? __kasan_check_write+0x14/0x20 [ 55.909825][ T8326] ? __up_read+0x225/0x5b0 [ 55.914215][ T8326] ? __down_read+0x3d0/0x3d0 [ 55.918955][ T8326] ? __kasan_check_read+0x11/0x20 [ 55.930682][ T8326] ? __fdget+0x156/0x200 [ 55.934903][ T8326] __x64_sys_sendmsg+0x1cf/0x290 [ 55.939838][ T8326] ? __sys_sendmsg+0x250/0x250 [ 55.944583][ T8326] ? do_user_addr_fault+0x655/0xaf0 [ 55.949763][ T8326] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 55.955456][ T8326] ? do_syscall_64+0x1d/0x140 [ 55.960116][ T8326] do_syscall_64+0xfe/0x140 [ 55.964610][ T8326] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 55.970483][ T8326] RIP: 0033:0x4401d9 [ 55.974362][ T8326] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 55.993945][ T8326] RSP: 002b:00007ffc548b4bf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 56.002331][ T8326] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 56.010281][ T8326] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 56.018244][ T8326] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 56.026197][ T8326] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 56.034160][ T8326] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 56.042112][ T8326] Modules linked in: [ 56.046394][ T8326] ---[ end trace c9d9f9f118b023ca ]--- [ 56.051916][ T8326] RIP: 0010:tcf_ife_init+0xff/0x1630 [ 56.057206][ T8326] Code: 00 74 08 4c 89 ef e8 d0 17 8e fb 48 8d 9c 24 a0 00 00 00 48 c7 84 24 50 01 00 00 00 00 00 00 4d 8d 6e 04 4c 89 f0 48 c1 e8 03 <42> 8a 04 38 84 c0 0f 85 ca 12 00 00 41 0f b7 0e 83 c1 fc 48 89 df [ 56.076864][ T8326] RSP: 0018:ffff8880a9246c00 EFLAGS: 00010246 [ 56.082966][ T8326] RAX: 0000000000000000 RBX: ffff8880a9246ca0 RCX: 00000000a9246b03 [ 56.090965][ T8326] RDX: ffff888088ffacd8 RSI: ffffffff88cd6340 RDI: 0000000000000282 [ 56.098929][ T8326] RBP: ffff8880a9246dd8 R08: dffffc0000000000 R09: fffffbfff11fba3d [ 56.106922][ T8326] R10: fffffbfff11fba3d R11: 0000000000000000 R12: 1ffff11015248daa [ 56.114911][ T8326] R13: 0000000000000004 R14: 0000000000000000 R15: dffffc0000000000 [ 56.122901][ T8326] FS: 0000555556895880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 56.131861][ T8326] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.138436][ T8326] CR2: 0000000020000180 CR3: 0000000091464000 CR4: 00000000001406e0 [ 56.146430][ T8326] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.154437][ T8326] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.162427][ T8326] Kernel panic - not syncing: Fatal exception [ 56.169772][ T8326] Kernel Offset: disabled [ 56.174091][ T8326] Rebooting in 86400 seconds..