[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 63.077352][ T27] audit: type=1800 audit(1563573605.301:25): pid=8918 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 63.121155][ T27] audit: type=1800 audit(1563573605.301:26): pid=8918 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 63.171157][ T27] audit: type=1800 audit(1563573605.301:27): pid=8918 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 '10.128.0.100' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 75.093510][ T9071] netlink: 4 bytes leftover after parsing attributes in process `syz-executor882'. [ 75.102919][ T9071] kasan: CONFIG_KASAN_INLINE enabled [ 75.108298][ T9071] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 75.117040][ T9071] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 75.123982][ T9071] CPU: 0 PID: 9071 Comm: syz-executor882 Not tainted 5.2.0+ #69 [ 75.131600][ T9071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.141657][ T9071] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 75.147022][ T9071] 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 [ 75.166622][ T9071] RSP: 0018:ffff88808f7feeb8 EFLAGS: 00010246 [ 75.172681][ T9071] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff110136f3da8 [ 75.180720][ T9071] RDX: 0000000000000000 RSI: 1ffff110136f3daf RDI: 0000000000000282 [ 75.188680][ T9071] RBP: ffff88808f7ff060 R08: 0000000000000002 R09: ffff88809b79ed48 [ 75.203913][ T9071] R10: fffffbfff134a0cf R11: ffffffff89a5067f R12: 0000000000000001 [ 75.211870][ T9071] R13: ffff888215d20040 R14: ffff88808f7ff8c0 R15: 0000000000000000 [ 75.219841][ T9071] FS: 0000555555752880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 75.228755][ T9071] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.235346][ T9071] CR2: 00007ffe6b5ff038 CR3: 00000000927cd000 CR4: 00000000001406f0 [ 75.243319][ T9071] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.251289][ T9071] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.259275][ T9071] Call Trace: [ 75.262549][ T9071] ? tc_lookup_action_n+0xd2/0x100 [ 75.267637][ T9071] ? __add_metainfo+0x480/0x480 [ 75.272491][ T9071] ? tc_lookup_action_n+0xd2/0x100 [ 75.277679][ T9071] ? __kasan_check_read+0x11/0x20 [ 75.282684][ T9071] ? lock_downgrade+0x920/0x920 [ 75.287538][ T9071] ? __kasan_check_write+0x14/0x20 [ 75.292633][ T9071] ? do_raw_read_unlock+0x3f/0x70 [ 75.297657][ T9071] tcf_action_init_1+0x6f2/0xa80 [ 75.302598][ T9071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.308820][ T9071] ? tcf_action_dump_old+0x80/0x80 [ 75.313913][ T9071] ? lock_downgrade+0x920/0x920 [ 75.318745][ T9071] ? __kasan_check_read+0x11/0x20 [ 75.323759][ T9071] ? mark_lock+0xc0/0x11e0 [ 75.328159][ T9071] tcf_action_init+0x241/0x360 [ 75.332918][ T9071] ? tcf_action_init_1+0xa80/0xa80 [ 75.338030][ T9071] ? mark_lock+0xc0/0x11e0 [ 75.342455][ T9071] ? mark_lock+0xc0/0x11e0 [ 75.346872][ T9071] ? __kasan_check_read+0x11/0x20 [ 75.351877][ T9071] tcf_action_add+0xe8/0x370 [ 75.356460][ T9071] ? tca_action_gd+0x1710/0x1710 [ 75.361394][ T9071] ? refcount_dec_not_one+0x1f0/0x1f0 [ 75.366779][ T9071] ? __nla_parse+0x43/0x60 [ 75.371177][ T9071] tc_ctl_action+0x3b5/0x4bc [ 75.375746][ T9071] ? tcf_action_add+0x370/0x370 [ 75.380578][ T9071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.386804][ T9071] ? tcf_action_add+0x370/0x370 [ 75.391657][ T9071] rtnetlink_rcv_msg+0x463/0xb00 [ 75.396588][ T9071] ? rtnetlink_put_metrics+0x580/0x580 [ 75.402026][ T9071] ? lock_downgrade+0x920/0x920 [ 75.406856][ T9071] ? netlink_deliver_tap+0x22d/0xbf0 [ 75.412115][ T9071] ? find_held_lock+0x35/0x130 [ 75.416856][ T9071] netlink_rcv_skb+0x177/0x450 [ 75.421598][ T9071] ? rtnetlink_put_metrics+0x580/0x580 [ 75.427035][ T9071] ? netlink_ack+0xb30/0xb30 [ 75.431614][ T9071] ? __kasan_check_read+0x11/0x20 [ 75.436614][ T9071] ? netlink_deliver_tap+0x254/0xbf0 [ 75.441909][ T9071] rtnetlink_rcv+0x1d/0x30 [ 75.446410][ T9071] netlink_unicast+0x531/0x710 [ 75.461444][ T9071] ? netlink_attachskb+0x7c0/0x7c0 [ 75.466556][ T9071] ? _copy_from_iter_full+0x25d/0x8a0 [ 75.471909][ T9071] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 75.477612][ T9071] ? __check_object_size+0x3d/0x43c [ 75.482800][ T9071] netlink_sendmsg+0x8a5/0xd60 [ 75.488712][ T9071] ? netlink_unicast+0x710/0x710 [ 75.493649][ T9071] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 75.499182][ T9071] ? apparmor_socket_sendmsg+0x2a/0x30 [ 75.504625][ T9071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.510844][ T9071] ? security_socket_sendmsg+0x8d/0xc0 [ 75.516289][ T9071] ? netlink_unicast+0x710/0x710 [ 75.521256][ T9071] sock_sendmsg+0xd7/0x130 [ 75.525651][ T9071] ___sys_sendmsg+0x803/0x920 [ 75.530308][ T9071] ? copy_msghdr_from_user+0x440/0x440 [ 75.535748][ T9071] ? prep_transhuge_page+0xa0/0xa0 [ 75.540838][ T9071] ? percpu_counter_add_batch+0x13c/0x190 [ 75.546537][ T9071] ? __do_page_fault+0x56a/0xdd0 [ 75.551459][ T9071] ? find_held_lock+0x35/0x130 [ 75.556209][ T9071] ? __do_page_fault+0x56a/0xdd0 [ 75.561161][ T9071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 75.567400][ T9071] ? __fget_light+0x1a9/0x230 [ 75.572078][ T9071] ? __fdget+0x1b/0x20 [ 75.576162][ T9071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 75.582412][ T9071] __sys_sendmsg+0x105/0x1d0 [ 75.586983][ T9071] ? __sys_sendmsg_sock+0xd0/0xd0 [ 75.591991][ T9071] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 75.597426][ T9071] ? do_syscall_64+0x26/0x6a0 [ 75.602078][ T9071] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.608146][ T9071] ? do_syscall_64+0x26/0x6a0 [ 75.612807][ T9071] __x64_sys_sendmsg+0x78/0xb0 [ 75.617548][ T9071] do_syscall_64+0xfd/0x6a0 [ 75.622134][ T9071] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.628008][ T9071] RIP: 0033:0x4401d9 [ 75.631909][ T9071] 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 [ 75.651495][ T9071] RSP: 002b:00007ffe6b4be638 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 75.659897][ T9071] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 75.667848][ T9071] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 75.675813][ T9071] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 75.683781][ T9071] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 75.691734][ T9071] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 75.699685][ T9071] Modules linked in: [ 75.704092][ T9071] ---[ end trace e465d7e6b38e2e57 ]--- [ 75.709575][ T9071] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 75.715010][ T9071] 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 [ 75.734665][ T9071] RSP: 0018:ffff88808f7feeb8 EFLAGS: 00010246 [ 75.740733][ T9071] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff110136f3da8 [ 75.749179][ T9071] RDX: 0000000000000000 RSI: 1ffff110136f3daf RDI: 0000000000000282 [ 75.757188][ T9071] RBP: ffff88808f7ff060 R08: 0000000000000002 R09: ffff88809b79ed48 [ 75.765293][ T9071] R10: fffffbfff134a0cf R11: ffffffff89a5067f R12: 0000000000000001 [ 75.773282][ T9071] R13: ffff888215d20040 R14: ffff88808f7ff8c0 R15: 0000000000000000 [ 75.781277][ T9071] FS: 0000555555752880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 75.790199][ T9071] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.796809][ T9071] CR2: 00007ffe6b5ff038 CR3: 00000000927cd000 CR4: 00000000001406f0 [ 75.804799][ T9071] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.812803][ T9071] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.820770][ T9071] Kernel panic - not syncing: Fatal exception [ 75.827945][ T9071] Kernel Offset: disabled [ 75.832269][ T9071] Rebooting in 86400 seconds..