[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 62.660593][ T26] audit: type=1800 audit(1563584885.613:25): pid=8943 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 62.707245][ T26] audit: type=1800 audit(1563584885.613:26): pid=8943 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 62.754750][ T26] audit: type=1800 audit(1563584885.623:27): pid=8943 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 '10.128.0.18' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 79.924896][ T9096] netlink: 4 bytes leftover after parsing attributes in process `syz-executor053'. [ 79.935126][ T9096] kasan: CONFIG_KASAN_INLINE enabled [ 79.940773][ T9096] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 79.949105][ T9096] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 79.956142][ T9096] CPU: 1 PID: 9096 Comm: syz-executor053 Not tainted 5.2.0+ #69 [ 79.963900][ T9096] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.974056][ T9096] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 79.979444][ T9096] 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 [ 79.999296][ T9096] RSP: 0018:ffff8880a1b0eeb8 EFLAGS: 00010246 [ 80.005510][ T9096] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101188d5e0 [ 80.013743][ T9096] RDX: 0000000000000000 RSI: 1ffff1101188d5e7 RDI: 0000000000000282 [ 80.021830][ T9096] RBP: ffff8880a1b0f060 R08: 0000000000000002 R09: ffff88808c46af08 [ 80.029800][ T9096] R10: fffffbfff134a0cf R11: ffffffff89a5067f R12: 0000000000000001 [ 80.037931][ T9096] R13: ffff8882158d4dc0 R14: ffff8880a1b0f8c0 R15: 0000000000000000 [ 80.045898][ T9096] FS: 00005555562dc880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 80.054981][ T9096] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.061664][ T9096] CR2: 0000000020000180 CR3: 000000009574e000 CR4: 00000000001406e0 [ 80.069725][ T9096] Call Trace: [ 80.073014][ T9096] ? tc_lookup_action_n+0xd2/0x100 [ 80.078238][ T9096] ? __add_metainfo+0x480/0x480 [ 80.083239][ T9096] ? tc_lookup_action_n+0xd2/0x100 [ 80.088567][ T9096] ? __kasan_check_read+0x11/0x20 [ 80.093594][ T9096] ? lock_downgrade+0x920/0x920 [ 80.098666][ T9096] ? __kasan_check_write+0x14/0x20 [ 80.104012][ T9096] ? do_raw_read_unlock+0x3f/0x70 [ 80.109123][ T9096] tcf_action_init_1+0x6f2/0xa80 [ 80.114057][ T9096] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.120290][ T9096] ? tcf_action_dump_old+0x80/0x80 [ 80.125389][ T9096] ? lock_downgrade+0x920/0x920 [ 80.130290][ T9096] ? __kasan_check_read+0x11/0x20 [ 80.135340][ T9096] ? mark_lock+0xc0/0x11e0 [ 80.139935][ T9096] tcf_action_init+0x241/0x360 [ 80.144702][ T9096] ? tcf_action_init_1+0xa80/0xa80 [ 80.149836][ T9096] ? mark_lock+0xc0/0x11e0 [ 80.154245][ T9096] ? mark_lock+0xc0/0x11e0 [ 80.159255][ T9096] ? __kasan_check_read+0x11/0x20 [ 80.164263][ T9096] tcf_action_add+0xe8/0x370 [ 80.168838][ T9096] ? tca_action_gd+0x1710/0x1710 [ 80.173763][ T9096] ? refcount_dec_not_one+0x1f0/0x1f0 [ 80.179129][ T9096] ? __nla_parse+0x43/0x60 [ 80.183796][ T9096] tc_ctl_action+0x3b5/0x4bc [ 80.188378][ T9096] ? tcf_action_add+0x370/0x370 [ 80.193225][ T9096] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.199634][ T9096] ? tcf_action_add+0x370/0x370 [ 80.204510][ T9096] rtnetlink_rcv_msg+0x463/0xb00 [ 80.209457][ T9096] ? rtnetlink_put_metrics+0x580/0x580 [ 80.215082][ T9096] ? lock_downgrade+0x920/0x920 [ 80.220119][ T9096] ? netlink_deliver_tap+0x22d/0xbf0 [ 80.225404][ T9096] ? find_held_lock+0x35/0x130 [ 80.230336][ T9096] netlink_rcv_skb+0x177/0x450 [ 80.235100][ T9096] ? rtnetlink_put_metrics+0x580/0x580 [ 80.240721][ T9096] ? netlink_ack+0xb30/0xb30 [ 80.245306][ T9096] ? __kasan_check_read+0x11/0x20 [ 80.250330][ T9096] ? netlink_deliver_tap+0x254/0xbf0 [ 80.255612][ T9096] rtnetlink_rcv+0x1d/0x30 [ 80.260017][ T9096] netlink_unicast+0x531/0x710 [ 80.264877][ T9096] ? netlink_attachskb+0x7c0/0x7c0 [ 80.270008][ T9096] ? _copy_from_iter_full+0x25d/0x8a0 [ 80.275932][ T9096] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 80.281728][ T9096] ? __check_object_size+0x3d/0x43c [ 80.286914][ T9096] netlink_sendmsg+0x8a5/0xd60 [ 80.291668][ T9096] ? netlink_unicast+0x710/0x710 [ 80.296598][ T9096] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 80.302353][ T9096] ? apparmor_socket_sendmsg+0x2a/0x30 [ 80.307801][ T9096] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.314123][ T9096] ? security_socket_sendmsg+0x8d/0xc0 [ 80.319740][ T9096] ? netlink_unicast+0x710/0x710 [ 80.324741][ T9096] sock_sendmsg+0xd7/0x130 [ 80.329151][ T9096] ___sys_sendmsg+0x803/0x920 [ 80.333931][ T9096] ? copy_msghdr_from_user+0x440/0x440 [ 80.339381][ T9096] ? prep_transhuge_page+0xa0/0xa0 [ 80.344483][ T9096] ? percpu_counter_add_batch+0x13c/0x190 [ 80.350190][ T9096] ? __do_page_fault+0x56a/0xdd0 [ 80.355108][ T9096] ? find_held_lock+0x35/0x130 [ 80.359848][ T9096] ? __do_page_fault+0x56a/0xdd0 [ 80.364776][ T9096] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.371004][ T9096] ? __fget_light+0x1a9/0x230 [ 80.375798][ T9096] ? __fdget+0x1b/0x20 [ 80.380011][ T9096] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 80.386534][ T9096] __sys_sendmsg+0x105/0x1d0 [ 80.391494][ T9096] ? __sys_sendmsg_sock+0xd0/0xd0 [ 80.396520][ T9096] ? down_read_non_owner+0x450/0x450 [ 80.401907][ T9096] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 80.407353][ T9096] ? do_syscall_64+0x26/0x6a0 [ 80.412020][ T9096] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.418074][ T9096] ? do_syscall_64+0x26/0x6a0 [ 80.422739][ T9096] __x64_sys_sendmsg+0x78/0xb0 [ 80.427620][ T9096] do_syscall_64+0xfd/0x6a0 [ 80.432206][ T9096] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.438188][ T9096] RIP: 0033:0x4401d9 [ 80.442069][ T9096] 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 [ 80.461779][ T9096] RSP: 002b:00007fff9ecedad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 80.470170][ T9096] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 80.478230][ T9096] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 80.486306][ T9096] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 80.494574][ T9096] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 80.502537][ T9096] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 80.510506][ T9096] Modules linked in: [ 80.515061][ T9096] ---[ end trace 437766f3f1a49277 ]--- [ 80.520809][ T9096] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 80.526164][ T9096] 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 [ 80.545859][ T9096] RSP: 0018:ffff8880a1b0eeb8 EFLAGS: 00010246 [ 80.552203][ T9096] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101188d5e0 [ 80.560874][ T9096] RDX: 0000000000000000 RSI: 1ffff1101188d5e7 RDI: 0000000000000282 [ 80.569430][ T9096] RBP: ffff8880a1b0f060 R08: 0000000000000002 R09: ffff88808c46af08 [ 80.577401][ T9096] R10: fffffbfff134a0cf R11: ffffffff89a5067f R12: 0000000000000001 [ 80.585532][ T9096] R13: ffff8882158d4dc0 R14: ffff8880a1b0f8c0 R15: 0000000000000000 [ 80.593845][ T9096] FS: 00005555562dc880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 80.602861][ T9096] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.610381][ T9096] CR2: 0000000020000180 CR3: 000000009574e000 CR4: 00000000001406e0 [ 80.618422][ T9096] Kernel panic - not syncing: Fatal exception [ 80.625785][ T9096] Kernel Offset: disabled [ 80.630233][ T9096] Rebooting in 86400 seconds..