[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 64.719654][ T26] audit: type=1800 audit(1563572304.674:25): pid=9075 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 64.767325][ T26] audit: type=1800 audit(1563572304.674:26): pid=9075 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 64.826411][ T26] audit: type=1800 audit(1563572304.684:27): pid=9075 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 '10.128.0.102' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.534696][ T9229] netlink: 4 bytes leftover after parsing attributes in process `syz-executor960'. [ 72.544081][ T9229] kasan: CONFIG_KASAN_INLINE enabled [ 72.549462][ T9229] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 72.557650][ T9229] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 72.564576][ T9229] CPU: 0 PID: 9229 Comm: syz-executor960 Not tainted 5.2.0+ #69 [ 72.572196][ T9229] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.582240][ T9229] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 72.587589][ T9229] Code: 00 00 48 c7 c7 40 c2 da 88 e8 f0 8c a2 fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c7 85 e8 fe ff ff 00 00 00 00 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 e2 [ 72.607189][ T9229] RSP: 0018:ffff88809032eeb8 EFLAGS: 00010246 [ 72.613227][ T9229] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff110119c21b0 [ 72.621265][ T9229] RDX: 0000000000000000 RSI: 1ffff110119c21b7 RDI: 0000000000000282 [ 72.629212][ T9229] RBP: ffff88809032f060 R08: 0000000000000002 R09: ffff88808ce10d88 [ 72.637160][ T9229] R10: fffffbfff134a0cf R11: ffffffff89a5067f R12: 0000000000000001 [ 72.645105][ T9229] R13: ffff8882166dd240 R14: ffff88809032f8c0 R15: 0000000000000000 [ 72.653056][ T9229] FS: 0000555556e20880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 72.661961][ T9229] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.668518][ T9229] CR2: 0000000020000180 CR3: 0000000088374000 CR4: 00000000001406f0 [ 72.676467][ T9229] Call Trace: [ 72.679740][ T9229] ? tc_lookup_action_n+0xd2/0x100 [ 72.684824][ T9229] ? __add_metainfo+0x480/0x480 [ 72.689651][ T9229] ? tc_lookup_action_n+0xd2/0x100 [ 72.694746][ T9229] ? __kasan_check_read+0x11/0x20 [ 72.699751][ T9229] ? lock_downgrade+0x920/0x920 [ 72.704591][ T9229] ? __kasan_check_write+0x14/0x20 [ 72.709680][ T9229] ? do_raw_read_unlock+0x3f/0x70 [ 72.714682][ T9229] tcf_action_init_1+0x6f2/0xa80 [ 72.719603][ T9229] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.725815][ T9229] ? tcf_action_dump_old+0x80/0x80 [ 72.730917][ T9229] ? lock_downgrade+0x920/0x920 [ 72.735748][ T9229] ? __kasan_check_read+0x11/0x20 [ 72.740786][ T9229] ? mark_lock+0xc0/0x11e0 [ 72.745179][ T9229] tcf_action_init+0x241/0x360 [ 72.749922][ T9229] ? tcf_action_init_1+0xa80/0xa80 [ 72.755016][ T9229] ? mark_lock+0xc0/0x11e0 [ 72.759421][ T9229] ? mark_lock+0xc0/0x11e0 [ 72.763841][ T9229] ? __kasan_check_read+0x11/0x20 [ 72.768848][ T9229] tcf_action_add+0xe8/0x370 [ 72.773417][ T9229] ? tca_action_gd+0x1710/0x1710 [ 72.778349][ T9229] ? refcount_dec_not_one+0x1f0/0x1f0 [ 72.783718][ T9229] ? __nla_parse+0x43/0x60 [ 72.788122][ T9229] tc_ctl_action+0x3b5/0x4bc [ 72.792710][ T9229] ? tcf_action_add+0x370/0x370 [ 72.797547][ T9229] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.803783][ T9229] ? tcf_action_add+0x370/0x370 [ 72.808615][ T9229] rtnetlink_rcv_msg+0x463/0xb00 [ 72.813542][ T9229] ? rtnetlink_put_metrics+0x580/0x580 [ 72.818992][ T9229] ? lock_downgrade+0x920/0x920 [ 72.823820][ T9229] ? netlink_deliver_tap+0x22d/0xbf0 [ 72.829109][ T9229] ? find_held_lock+0x35/0x130 [ 72.833855][ T9229] netlink_rcv_skb+0x177/0x450 [ 72.838598][ T9229] ? rtnetlink_put_metrics+0x580/0x580 [ 72.844029][ T9229] ? netlink_ack+0xb30/0xb30 [ 72.848613][ T9229] ? __kasan_check_read+0x11/0x20 [ 72.853615][ T9229] ? netlink_deliver_tap+0x254/0xbf0 [ 72.859974][ T9229] rtnetlink_rcv+0x1d/0x30 [ 72.869659][ T9229] netlink_unicast+0x531/0x710 [ 72.874930][ T9229] ? netlink_attachskb+0x7c0/0x7c0 [ 72.880029][ T9229] ? _copy_from_iter_full+0x25d/0x8a0 [ 72.885379][ T9229] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 72.891079][ T9229] ? __check_object_size+0x3d/0x43c [ 72.896272][ T9229] netlink_sendmsg+0x8a5/0xd60 [ 72.901027][ T9229] ? netlink_unicast+0x710/0x710 [ 72.905940][ T9229] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 72.911469][ T9229] ? apparmor_socket_sendmsg+0x2a/0x30 [ 72.916908][ T9229] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.923128][ T9229] ? security_socket_sendmsg+0x8d/0xc0 [ 72.928564][ T9229] ? netlink_unicast+0x710/0x710 [ 72.933475][ T9229] sock_sendmsg+0xd7/0x130 [ 72.937888][ T9229] ___sys_sendmsg+0x803/0x920 [ 72.942547][ T9229] ? copy_msghdr_from_user+0x440/0x440 [ 72.948002][ T9229] ? prep_transhuge_page+0xa0/0xa0 [ 72.953093][ T9229] ? percpu_counter_add_batch+0x13c/0x190 [ 72.958792][ T9229] ? __do_page_fault+0x56a/0xdd0 [ 72.963705][ T9229] ? find_held_lock+0x35/0x130 [ 72.968482][ T9229] ? __do_page_fault+0x56a/0xdd0 [ 72.973414][ T9229] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.979633][ T9229] ? __fget_light+0x1a9/0x230 [ 72.984303][ T9229] ? __fdget+0x1b/0x20 [ 72.988350][ T9229] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 72.994581][ T9229] __sys_sendmsg+0x105/0x1d0 [ 72.999149][ T9229] ? __sys_sendmsg_sock+0xd0/0xd0 [ 73.004148][ T9229] ? down_read_non_owner+0x450/0x450 [ 73.009414][ T9229] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 73.014850][ T9229] ? do_syscall_64+0x26/0x6a0 [ 73.019509][ T9229] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.025551][ T9229] ? do_syscall_64+0x26/0x6a0 [ 73.030208][ T9229] __x64_sys_sendmsg+0x78/0xb0 [ 73.034949][ T9229] do_syscall_64+0xfd/0x6a0 [ 73.039457][ T9229] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.045342][ T9229] RIP: 0033:0x4401d9 [ 73.049215][ T9229] 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 [ 73.068794][ T9229] RSP: 002b:00007fff767975d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 73.077183][ T9229] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 73.085132][ T9229] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 73.093079][ T9229] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 73.101026][ T9229] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 73.108975][ T9229] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 73.116927][ T9229] Modules linked in: [ 73.121372][ T9229] ---[ end trace 6937a8efb11262f5 ]--- [ 73.126978][ T9229] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 73.132350][ T9229] Code: 00 00 48 c7 c7 40 c2 da 88 e8 f0 8c a2 fb 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c7 85 e8 fe ff ff 00 00 00 00 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 e2 [ 73.151986][ T9229] RSP: 0018:ffff88809032eeb8 EFLAGS: 00010246 [ 73.158064][ T9229] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff110119c21b0 [ 73.166014][ T9229] RDX: 0000000000000000 RSI: 1ffff110119c21b7 RDI: 0000000000000282 [ 73.173995][ T9229] RBP: ffff88809032f060 R08: 0000000000000002 R09: ffff88808ce10d88 [ 73.181980][ T9229] R10: fffffbfff134a0cf R11: ffffffff89a5067f R12: 0000000000000001 [ 73.189963][ T9229] R13: ffff8882166dd240 R14: ffff88809032f8c0 R15: 0000000000000000 [ 73.197956][ T9229] FS: 0000555556e20880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 73.206918][ T9229] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.213509][ T9229] CR2: 0000000020000180 CR3: 0000000088374000 CR4: 00000000001406f0 [ 73.221535][ T9229] Kernel panic - not syncing: Fatal exception [ 73.228673][ T9229] Kernel Offset: disabled [ 73.232992][ T9229] Rebooting in 86400 seconds..