[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 60.520175][ T24] audit: type=1800 audit(1563578356.023:25): pid=8856 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 60.564220][ T24] audit: type=1800 audit(1563578356.023:26): pid=8856 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 60.601732][ T24] audit: type=1800 audit(1563578356.023:27): pid=8856 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 '10.128.15.213' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 88.780023][ T9012] netlink: 4 bytes leftover after parsing attributes in process `syz-executor086'. [ 88.789637][ T9012] kasan: CONFIG_KASAN_INLINE enabled [ 88.796004][ T9012] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 88.804522][ T9012] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 88.811551][ T9012] CPU: 0 PID: 9012 Comm: syz-executor086 Not tainted 5.2.0+ #67 [ 88.819180][ T9012] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.829241][ T9012] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 88.834676][ T9012] 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 [ 88.854530][ T9012] RSP: 0018:ffff888087be6eb8 EFLAGS: 00010246 [ 88.860775][ T9012] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101199a968 [ 88.868739][ T9012] RDX: 0000000000000000 RSI: 1ffff1101199a96f RDI: 0000000000000286 [ 88.876696][ T9012] RBP: ffff888087be7060 R08: 0000000000000002 R09: ffff88808ccd4b48 [ 88.884758][ T9012] R10: fffffbfff1349ef7 R11: ffffffff89a4f7bf R12: 0000000000000001 [ 88.892723][ T9012] R13: ffff888216717b00 R14: ffff888087be78c0 R15: 0000000000000000 [ 88.901156][ T9012] FS: 0000555555728880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 88.910394][ T9012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 88.917016][ T9012] CR2: 0000000020000180 CR3: 00000000a505a000 CR4: 00000000001406f0 [ 88.924990][ T9012] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 88.933155][ T9012] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 88.941487][ T9012] Call Trace: [ 88.944779][ T9012] ? tc_lookup_action_n+0xd2/0x100 [ 88.950364][ T9012] ? __add_metainfo+0x480/0x480 [ 88.955211][ T9012] ? tc_lookup_action_n+0xd2/0x100 [ 88.960328][ T9012] ? __kasan_check_read+0x11/0x20 [ 88.965347][ T9012] ? lock_downgrade+0x920/0x920 [ 88.970194][ T9012] ? __kasan_check_write+0x14/0x20 [ 88.975303][ T9012] ? do_raw_read_unlock+0x3f/0x70 [ 88.980313][ T9012] tcf_action_init_1+0x6f2/0xa80 [ 88.985349][ T9012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 88.991588][ T9012] ? tcf_action_dump_old+0x80/0x80 [ 88.996694][ T9012] ? lock_downgrade+0x920/0x920 [ 89.001547][ T9012] ? __kasan_check_read+0x11/0x20 [ 89.006570][ T9012] ? mark_lock+0xc0/0x11e0 [ 89.011159][ T9012] tcf_action_init+0x241/0x360 [ 89.015921][ T9012] ? tcf_action_init_1+0xa80/0xa80 [ 89.021068][ T9012] ? mark_lock+0xc0/0x11e0 [ 89.025482][ T9012] ? mark_lock+0xc0/0x11e0 [ 89.029894][ T9012] ? __kasan_check_read+0x11/0x20 [ 89.034915][ T9012] tcf_action_add+0xe8/0x370 [ 89.039594][ T9012] ? tca_action_gd+0x1710/0x1710 [ 89.044524][ T9012] ? refcount_dec_not_one+0x1f0/0x1f0 [ 89.049901][ T9012] ? __nla_parse+0x43/0x60 [ 89.054469][ T9012] tc_ctl_action+0x3b5/0x4bc [ 89.059055][ T9012] ? tcf_action_add+0x370/0x370 [ 89.063899][ T9012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.070138][ T9012] ? tcf_action_add+0x370/0x370 [ 89.074976][ T9012] rtnetlink_rcv_msg+0x463/0xb00 [ 89.079904][ T9012] ? rtnetlink_put_metrics+0x580/0x580 [ 89.085356][ T9012] ? lock_downgrade+0x920/0x920 [ 89.090196][ T9012] ? netlink_deliver_tap+0x22d/0xbf0 [ 89.095472][ T9012] ? find_held_lock+0x35/0x130 [ 89.100265][ T9012] netlink_rcv_skb+0x177/0x450 [ 89.105022][ T9012] ? rtnetlink_put_metrics+0x580/0x580 [ 89.110586][ T9012] ? netlink_ack+0xb30/0xb30 [ 89.115160][ T9012] ? __kasan_check_read+0x11/0x20 [ 89.120164][ T9012] ? netlink_deliver_tap+0x254/0xbf0 [ 89.125509][ T9012] rtnetlink_rcv+0x1d/0x30 [ 89.129923][ T9012] netlink_unicast+0x531/0x710 [ 89.134810][ T9012] ? netlink_attachskb+0x7c0/0x7c0 [ 89.140117][ T9012] ? _copy_from_iter_full+0x25d/0x8a0 [ 89.145490][ T9012] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 89.151194][ T9012] ? __check_object_size+0x3d/0x43c [ 89.156383][ T9012] netlink_sendmsg+0x8a5/0xd60 [ 89.161130][ T9012] ? netlink_unicast+0x710/0x710 [ 89.166150][ T9012] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 89.171686][ T9012] ? apparmor_socket_sendmsg+0x2a/0x30 [ 89.177398][ T9012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.183646][ T9012] ? security_socket_sendmsg+0x8d/0xc0 [ 89.189434][ T9012] ? netlink_unicast+0x710/0x710 [ 89.194370][ T9012] sock_sendmsg+0xd7/0x130 [ 89.198772][ T9012] ___sys_sendmsg+0x803/0x920 [ 89.203478][ T9012] ? copy_msghdr_from_user+0x440/0x440 [ 89.209059][ T9012] ? prep_transhuge_page+0xa0/0xa0 [ 89.214287][ T9012] ? percpu_counter_add_batch+0x13c/0x190 [ 89.220189][ T9012] ? __do_page_fault+0x56a/0xdd0 [ 89.225122][ T9012] ? find_held_lock+0x35/0x130 [ 89.229982][ T9012] ? __do_page_fault+0x56a/0xdd0 [ 89.234950][ T9012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.241186][ T9012] ? __fget_light+0x1a9/0x230 [ 89.245850][ T9012] ? __fdget+0x1b/0x20 [ 89.249983][ T9012] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 89.256389][ T9012] __sys_sendmsg+0x105/0x1d0 [ 89.260975][ T9012] ? __sys_sendmsg_sock+0xd0/0xd0 [ 89.266106][ T9012] ? down_read_non_owner+0x450/0x450 [ 89.271567][ T9012] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 89.277131][ T9012] ? do_syscall_64+0x26/0x6a0 [ 89.281915][ T9012] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.287967][ T9012] ? do_syscall_64+0x26/0x6a0 [ 89.292737][ T9012] __x64_sys_sendmsg+0x78/0xb0 [ 89.297487][ T9012] do_syscall_64+0xfd/0x6a0 [ 89.301986][ T9012] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.307903][ T9012] RIP: 0033:0x4401d9 [ 89.311786][ T9012] 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 [ 89.331516][ T9012] RSP: 002b:00007ffc6ced44d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 89.339931][ T9012] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 89.348092][ T9012] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 89.356055][ T9012] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 89.364055][ T9012] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 89.372056][ T9012] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 89.380146][ T9012] Modules linked in: [ 89.385261][ T9012] ---[ end trace 0dbd40a8b5ebe405 ]--- [ 89.390813][ T9012] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 89.396490][ T9012] 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 [ 89.416454][ T9012] RSP: 0018:ffff888087be6eb8 EFLAGS: 00010246 [ 89.422527][ T9012] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101199a968 [ 89.430561][ T9012] RDX: 0000000000000000 RSI: 1ffff1101199a96f RDI: 0000000000000286 [ 89.438753][ T9012] RBP: ffff888087be7060 R08: 0000000000000002 R09: ffff88808ccd4b48 [ 89.447209][ T9012] R10: fffffbfff1349ef7 R11: ffffffff89a4f7bf R12: 0000000000000001 [ 89.455219][ T9012] R13: ffff888216717b00 R14: ffff888087be78c0 R15: 0000000000000000 [ 89.463191][ T9012] FS: 0000555555728880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 89.472192][ T9012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.478848][ T9012] CR2: 0000000020000180 CR3: 00000000a505a000 CR4: 00000000001406f0 [ 89.486913][ T9012] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.494954][ T9012] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.502927][ T9012] Kernel panic - not syncing: Fatal exception [ 89.510077][ T9012] Kernel Offset: disabled [ 89.514582][ T9012] Rebooting in 86400 seconds..