[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 60.137154][ T27] audit: type=1800 audit(1563579531.373:25): pid=9005 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 60.176079][ T27] audit: type=1800 audit(1563579531.373:26): pid=9005 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 60.212114][ T27] audit: type=1800 audit(1563579531.383:27): pid=9005 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 '10.128.10.34' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.873562][ T9159] netlink: 4 bytes leftover after parsing attributes in process `syz-executor186'. [ 71.883002][ T9159] kasan: CONFIG_KASAN_INLINE enabled [ 71.888389][ T9159] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 71.896673][ T9159] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 71.903602][ T9159] CPU: 1 PID: 9159 Comm: syz-executor186 Not tainted 5.2.0+ #67 [ 71.911582][ T9159] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.921631][ T9159] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 71.926983][ T9159] Code: 00 00 48 c7 c7 80 bf da 88 e8 c0 6d 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 [ 71.946569][ T9159] RSP: 0018:ffff8880a638eeb8 EFLAGS: 00010246 [ 71.952614][ T9159] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11014f6fd28 [ 71.960565][ T9159] RDX: 0000000000000000 RSI: 1ffff11014f6fd2f RDI: 0000000000000286 [ 71.968519][ T9159] RBP: ffff8880a638f060 R08: 0000000000000002 R09: ffff8880a7b7e948 [ 71.976498][ T9159] R10: fffffbfff1349ef7 R11: ffffffff89a4f7bf R12: 0000000000000001 [ 71.984452][ T9159] R13: ffff88809b41cd80 R14: ffff8880a638f8c0 R15: 0000000000000000 [ 71.992418][ T9159] FS: 000055555591d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 72.001341][ T9159] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.007922][ T9159] CR2: 0000000020000180 CR3: 000000008f4b2000 CR4: 00000000001406e0 [ 72.015875][ T9159] Call Trace: [ 72.019149][ T9159] ? tc_lookup_action_n+0xd2/0x100 [ 72.024262][ T9159] ? __add_metainfo+0x480/0x480 [ 72.029109][ T9159] ? tc_lookup_action_n+0xd2/0x100 [ 72.034201][ T9159] ? __kasan_check_read+0x11/0x20 [ 72.039220][ T9159] ? lock_downgrade+0x920/0x920 [ 72.044066][ T9159] ? __kasan_check_write+0x14/0x20 [ 72.049243][ T9159] ? do_raw_read_unlock+0x3f/0x70 [ 72.054247][ T9159] tcf_action_init_1+0x6f2/0xa80 [ 72.059191][ T9159] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.065425][ T9159] ? tcf_action_dump_old+0x80/0x80 [ 72.070521][ T9159] ? lock_downgrade+0x920/0x920 [ 72.075364][ T9159] ? __kasan_check_read+0x11/0x20 [ 72.080369][ T9159] ? mark_lock+0xc0/0x11e0 [ 72.084764][ T9159] tcf_action_init+0x241/0x360 [ 72.089539][ T9159] ? tcf_action_init_1+0xa80/0xa80 [ 72.094644][ T9159] ? mark_lock+0xc0/0x11e0 [ 72.099044][ T9159] ? mark_lock+0xc0/0x11e0 [ 72.103437][ T9159] ? __kasan_check_read+0x11/0x20 [ 72.108438][ T9159] tcf_action_add+0xe8/0x370 [ 72.113019][ T9159] ? tca_action_gd+0x1710/0x1710 [ 72.117933][ T9159] ? refcount_dec_not_one+0x1f0/0x1f0 [ 72.123286][ T9159] ? __nla_parse+0x43/0x60 [ 72.127696][ T9159] tc_ctl_action+0x3b5/0x4bc [ 72.132281][ T9159] ? tcf_action_add+0x370/0x370 [ 72.137123][ T9159] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.143367][ T9159] ? tcf_action_add+0x370/0x370 [ 72.148234][ T9159] rtnetlink_rcv_msg+0x463/0xb00 [ 72.153153][ T9159] ? rtnetlink_put_metrics+0x580/0x580 [ 72.158675][ T9159] ? lock_downgrade+0x920/0x920 [ 72.163505][ T9159] ? netlink_deliver_tap+0x22d/0xbf0 [ 72.168764][ T9159] ? find_held_lock+0x35/0x130 [ 72.173518][ T9159] netlink_rcv_skb+0x177/0x450 [ 72.178259][ T9159] ? rtnetlink_put_metrics+0x580/0x580 [ 72.183690][ T9159] ? netlink_ack+0xb30/0xb30 [ 72.188452][ T9159] ? __kasan_check_read+0x11/0x20 [ 72.193452][ T9159] ? netlink_deliver_tap+0x254/0xbf0 [ 72.198738][ T9159] rtnetlink_rcv+0x1d/0x30 [ 72.203148][ T9159] netlink_unicast+0x531/0x710 [ 72.207893][ T9159] ? netlink_attachskb+0x7c0/0x7c0 [ 72.212998][ T9159] ? _copy_from_iter_full+0x25d/0x8a0 [ 72.218362][ T9159] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 72.224059][ T9159] ? __check_object_size+0x3d/0x43c [ 72.229242][ T9159] netlink_sendmsg+0x8a5/0xd60 [ 72.233996][ T9159] ? netlink_unicast+0x710/0x710 [ 72.238915][ T9159] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 72.244530][ T9159] ? apparmor_socket_sendmsg+0x2a/0x30 [ 72.249973][ T9159] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.256232][ T9159] ? security_socket_sendmsg+0x8d/0xc0 [ 72.261693][ T9159] ? netlink_unicast+0x710/0x710 [ 72.266614][ T9159] sock_sendmsg+0xd7/0x130 [ 72.271023][ T9159] ___sys_sendmsg+0x803/0x920 [ 72.275762][ T9159] ? copy_msghdr_from_user+0x440/0x440 [ 72.281206][ T9159] ? prep_transhuge_page+0xa0/0xa0 [ 72.286319][ T9159] ? percpu_counter_add_batch+0x13c/0x190 [ 72.292487][ T9159] ? __do_page_fault+0x56a/0xdd0 [ 72.297418][ T9159] ? find_held_lock+0x35/0x130 [ 72.302162][ T9159] ? __do_page_fault+0x56a/0xdd0 [ 72.307082][ T9159] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.313295][ T9159] ? __fget_light+0x1a9/0x230 [ 72.317947][ T9159] ? __fdget+0x1b/0x20 [ 72.322014][ T9159] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 72.328237][ T9159] __sys_sendmsg+0x105/0x1d0 [ 72.332807][ T9159] ? __sys_sendmsg_sock+0xd0/0xd0 [ 72.337829][ T9159] ? down_read_non_owner+0x450/0x450 [ 72.343099][ T9159] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 72.348536][ T9159] ? do_syscall_64+0x26/0x6a0 [ 72.353193][ T9159] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.359246][ T9159] ? do_syscall_64+0x26/0x6a0 [ 72.363991][ T9159] __x64_sys_sendmsg+0x78/0xb0 [ 72.368737][ T9159] do_syscall_64+0xfd/0x6a0 [ 72.373223][ T9159] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.379091][ T9159] RIP: 0033:0x4401d9 [ 72.382962][ T9159] 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 [ 72.402622][ T9159] RSP: 002b:00007ffcca722068 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 72.411096][ T9159] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 72.419052][ T9159] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 72.427003][ T9159] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 72.434956][ T9159] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 72.442906][ T9159] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 72.450883][ T9159] Modules linked in: [ 72.456049][ T9159] ---[ end trace d53268106d38dd1c ]--- [ 72.461532][ T9159] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 72.467066][ T9159] Code: 00 00 48 c7 c7 80 bf da 88 e8 c0 6d 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 [ 72.486920][ T9159] RSP: 0018:ffff8880a638eeb8 EFLAGS: 00010246 [ 72.492990][ T9159] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff11014f6fd28 [ 72.501148][ T9159] RDX: 0000000000000000 RSI: 1ffff11014f6fd2f RDI: 0000000000000286 [ 72.510550][ T9159] RBP: ffff8880a638f060 R08: 0000000000000002 R09: ffff8880a7b7e948 [ 72.518567][ T9159] R10: fffffbfff1349ef7 R11: ffffffff89a4f7bf R12: 0000000000000001 [ 72.526983][ T9159] R13: ffff88809b41cd80 R14: ffff8880a638f8c0 R15: 0000000000000000 [ 72.534950][ T9159] FS: 000055555591d880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 72.543929][ T9159] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.550723][ T9159] CR2: 0000000020000180 CR3: 000000008f4b2000 CR4: 00000000001406e0 [ 72.558733][ T9159] Kernel panic - not syncing: Fatal exception [ 72.565744][ T9159] Kernel Offset: disabled [ 72.576346][ T9159] Rebooting in 86400 seconds..