[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 65.887681][ T26] audit: type=1800 audit(1563580819.471:25): pid=8549 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 65.930980][ T26] audit: type=1800 audit(1563580819.481:26): pid=8549 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 65.981286][ T26] audit: type=1800 audit(1563580819.481:27): pid=8549 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 '10.128.10.3' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 91.565698][ T8705] netlink: 4 bytes leftover after parsing attributes in process `syz-executor541'. [ 91.575083][ T8705] kasan: CONFIG_KASAN_INLINE enabled [ 91.580381][ T8705] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 91.588495][ T8705] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 91.595425][ T8705] CPU: 0 PID: 8705 Comm: syz-executor541 Not tainted 5.2.0+ #69 [ 91.603026][ T8705] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.613107][ T8705] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 91.618459][ T8705] 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 [ 91.638037][ T8705] RSP: 0018:ffff8880995e6eb8 EFLAGS: 00010246 [ 91.644076][ T8705] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff110134db980 [ 91.652022][ T8705] RDX: 0000000000000000 RSI: 1ffff110134db987 RDI: 0000000000000282 [ 91.659967][ T8705] RBP: ffff8880995e7060 R08: 0000000000000002 R09: ffff88809a6dcc08 [ 91.667911][ T8705] R10: fffffbfff134a0cf R11: ffffffff89a5067f R12: 0000000000000001 [ 91.675856][ T8705] R13: ffff88809bfe8dc0 R14: ffff8880995e78c0 R15: 0000000000000000 [ 91.683804][ T8705] FS: 000055555626f880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 91.692704][ T8705] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.699312][ T8705] CR2: 0000000020000180 CR3: 000000009ffdc000 CR4: 00000000001406f0 [ 91.707274][ T8705] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 91.715225][ T8705] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 91.723175][ T8705] Call Trace: [ 91.726450][ T8705] ? tc_lookup_action_n+0xd2/0x100 [ 91.731536][ T8705] ? __add_metainfo+0x480/0x480 [ 91.736356][ T8705] ? tc_lookup_action_n+0xd2/0x100 [ 91.741447][ T8705] ? __kasan_check_read+0x11/0x20 [ 91.746448][ T8705] ? lock_downgrade+0x920/0x920 [ 91.751274][ T8705] ? __kasan_check_write+0x14/0x20 [ 91.756356][ T8705] ? do_raw_read_unlock+0x3f/0x70 [ 91.761361][ T8705] tcf_action_init_1+0x6f2/0xa80 [ 91.766280][ T8705] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.772495][ T8705] ? tcf_action_dump_old+0x80/0x80 [ 91.777579][ T8705] ? lock_downgrade+0x920/0x920 [ 91.782411][ T8705] ? __kasan_check_read+0x11/0x20 [ 91.787409][ T8705] ? mark_lock+0xc0/0x11e0 [ 91.791801][ T8705] tcf_action_init+0x241/0x360 [ 91.796540][ T8705] ? tcf_action_init_1+0xa80/0xa80 [ 91.801623][ T8705] ? mark_lock+0xc0/0x11e0 [ 91.806017][ T8705] ? mark_lock+0xc0/0x11e0 [ 91.810406][ T8705] ? __kasan_check_read+0x11/0x20 [ 91.815402][ T8705] tcf_action_add+0xe8/0x370 [ 91.819963][ T8705] ? tca_action_gd+0x1710/0x1710 [ 91.824876][ T8705] ? refcount_dec_not_one+0x1f0/0x1f0 [ 91.830228][ T8705] ? __nla_parse+0x43/0x60 [ 91.834617][ T8705] tc_ctl_action+0x3b5/0x4bc [ 91.839179][ T8705] ? tcf_action_add+0x370/0x370 [ 91.844008][ T8705] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.850231][ T8705] ? tcf_action_add+0x370/0x370 [ 91.855060][ T8705] rtnetlink_rcv_msg+0x463/0xb00 [ 91.860017][ T8705] ? rtnetlink_put_metrics+0x580/0x580 [ 91.865459][ T8705] ? lock_downgrade+0x920/0x920 [ 91.870282][ T8705] ? netlink_deliver_tap+0x22d/0xbf0 [ 91.875542][ T8705] ? find_held_lock+0x35/0x130 [ 91.880277][ T8705] netlink_rcv_skb+0x177/0x450 [ 91.885014][ T8705] ? rtnetlink_put_metrics+0x580/0x580 [ 91.890443][ T8705] ? netlink_ack+0xb30/0xb30 [ 91.895007][ T8705] ? __kasan_check_read+0x11/0x20 [ 91.900004][ T8705] ? netlink_deliver_tap+0x254/0xbf0 [ 91.905263][ T8705] rtnetlink_rcv+0x1d/0x30 [ 91.909666][ T8705] netlink_unicast+0x531/0x710 [ 91.914408][ T8705] ? netlink_attachskb+0x7c0/0x7c0 [ 91.919492][ T8705] ? _copy_from_iter_full+0x25d/0x8a0 [ 91.924838][ T8705] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 91.930545][ T8705] ? __check_object_size+0x3d/0x43c [ 91.935729][ T8705] netlink_sendmsg+0x8a5/0xd60 [ 91.940487][ T8705] ? netlink_unicast+0x710/0x710 [ 91.945413][ T8705] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 91.950939][ T8705] ? apparmor_socket_sendmsg+0x2a/0x30 [ 91.956416][ T8705] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.962638][ T8705] ? security_socket_sendmsg+0x8d/0xc0 [ 91.968068][ T8705] ? netlink_unicast+0x710/0x710 [ 91.972981][ T8705] sock_sendmsg+0xd7/0x130 [ 91.977369][ T8705] ___sys_sendmsg+0x803/0x920 [ 91.982029][ T8705] ? copy_msghdr_from_user+0x440/0x440 [ 91.987474][ T8705] ? prep_transhuge_page+0xa0/0xa0 [ 91.992569][ T8705] ? percpu_counter_add_batch+0x13c/0x190 [ 91.998272][ T8705] ? __do_page_fault+0x56a/0xdd0 [ 92.003198][ T8705] ? find_held_lock+0x35/0x130 [ 92.007949][ T8705] ? __do_page_fault+0x56a/0xdd0 [ 92.012984][ T8705] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 92.019200][ T8705] ? __fget_light+0x1a9/0x230 [ 92.023854][ T8705] ? __fdget+0x1b/0x20 [ 92.027899][ T8705] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 92.034123][ T8705] __sys_sendmsg+0x105/0x1d0 [ 92.038693][ T8705] ? __sys_sendmsg_sock+0xd0/0xd0 [ 92.043696][ T8705] ? down_read_non_owner+0x450/0x450 [ 92.052074][ T8705] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 92.060733][ T8705] ? do_syscall_64+0x26/0x6a0 [ 92.065386][ T8705] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.071470][ T8705] ? do_syscall_64+0x26/0x6a0 [ 92.076136][ T8705] __x64_sys_sendmsg+0x78/0xb0 [ 92.080890][ T8705] do_syscall_64+0xfd/0x6a0 [ 92.085413][ T8705] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.091285][ T8705] RIP: 0033:0x4401d9 [ 92.095202][ T8705] 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 [ 92.114789][ T8705] RSP: 002b:00007ffc28696df8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 92.123181][ T8705] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 92.131130][ T8705] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 92.139080][ T8705] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 92.147032][ T8705] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 92.154982][ T8705] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 92.162932][ T8705] Modules linked in: [ 92.167641][ T8705] ---[ end trace d13932e1c119c58d ]--- [ 92.173239][ T8705] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 92.178589][ T8705] 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 [ 92.198221][ T8705] RSP: 0018:ffff8880995e6eb8 EFLAGS: 00010246 [ 92.204302][ T8705] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff110134db980 [ 92.212401][ T8705] RDX: 0000000000000000 RSI: 1ffff110134db987 RDI: 0000000000000282 [ 92.220365][ T8705] RBP: ffff8880995e7060 R08: 0000000000000002 R09: ffff88809a6dcc08 [ 92.228350][ T8705] R10: fffffbfff134a0cf R11: ffffffff89a5067f R12: 0000000000000001 [ 92.236338][ T8705] R13: ffff88809bfe8dc0 R14: ffff8880995e78c0 R15: 0000000000000000 [ 92.244332][ T8705] FS: 000055555626f880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 92.253272][ T8705] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.259839][ T8705] CR2: 0000000020000180 CR3: 000000009ffdc000 CR4: 00000000001406f0 [ 92.267902][ T8705] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.276016][ T8705] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.284007][ T8705] Kernel panic - not syncing: Fatal exception [ 92.291033][ T8705] Kernel Offset: disabled [ 92.295347][ T8705] Rebooting in 86400 seconds..