[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 47.872893][ T26] audit: type=1800 audit(1563576659.106:25): pid=8218 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 47.914441][ T26] audit: type=1800 audit(1563576659.116:26): pid=8218 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 47.955392][ T26] audit: type=1800 audit(1563576659.116:27): pid=8218 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.0.174' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 60.005218][ T8370] netlink: 4 bytes leftover after parsing attributes in process `syz-executor429'. [ 60.014614][ T8370] kasan: CONFIG_KASAN_INLINE enabled [ 60.019913][ T8370] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 60.028132][ T8370] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 60.035062][ T8370] CPU: 0 PID: 8370 Comm: syz-executor429 Not tainted 5.2.0+ #35 [ 60.042667][ T8370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.052724][ T8370] RIP: 0010:tcf_ife_init+0xff/0x1630 [ 60.057982][ T8370] Code: 00 74 08 4c 89 ef e8 d0 17 8e fb 48 8d 9c 24 a0 00 00 00 48 c7 84 24 50 01 00 00 00 00 00 00 4d 8d 6e 04 4c 89 f0 48 c1 e8 03 <42> 8a 04 38 84 c0 0f 85 ca 12 00 00 41 0f b7 0e 83 c1 fc 48 89 df [ 60.077584][ T8370] RSP: 0018:ffff88808f926c00 EFLAGS: 00010246 [ 60.083621][ T8370] RAX: 0000000000000000 RBX: ffff88808f926ca0 RCX: 000000008f926b03 [ 60.091572][ T8370] RDX: ffff8880956e0f98 RSI: ffffffff88cd6340 RDI: 0000000000000282 [ 60.099518][ T8370] RBP: ffff88808f926dd8 R08: dffffc0000000000 R09: fffffbfff11fba3d [ 60.107466][ T8370] R10: fffffbfff11fba3d R11: 0000000000000000 R12: 1ffff11011f24daa [ 60.115413][ T8370] R13: 0000000000000004 R14: 0000000000000000 R15: dffffc0000000000 [ 60.123359][ T8370] FS: 000055555607c880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 60.132258][ T8370] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.138816][ T8370] CR2: 0000000020000180 CR3: 00000000a0109000 CR4: 00000000001406f0 [ 60.146767][ T8370] Call Trace: [ 60.150076][ T8370] ? unwind_get_return_address_ptr+0xa0/0xa0 [ 60.156034][ T8370] ? tcf_ife_search+0x40/0x40 [ 60.160706][ T8370] ? tcf_action_init_1+0x2e4/0xd40 [ 60.165796][ T8370] ? __kasan_check_write+0x14/0x20 [ 60.170880][ T8370] ? do_raw_read_unlock+0x42/0xf0 [ 60.175876][ T8370] ? tcf_ife_search+0x40/0x40 [ 60.180526][ T8370] tcf_action_init_1+0x786/0xd40 [ 60.185439][ T8370] ? tcf_action_dump+0x290/0x290 [ 60.190352][ T8370] ? __nla_validate+0x50/0x50 [ 60.195008][ T8370] ? mark_lock+0x152/0x1850 [ 60.199501][ T8370] ? __nla_parse+0x41/0x50 [ 60.203892][ T8370] tcf_action_init+0x183/0x490 [ 60.208634][ T8370] ? tcf_action_init_1+0xd40/0xd40 [ 60.213724][ T8370] ? __nla_validate_parse+0x18f4/0x2010 [ 60.219248][ T8370] ? security_capable+0xa2/0xd0 [ 60.224088][ T8370] tc_ctl_action+0x3ad/0x920 [ 60.228656][ T8370] ? rtnetlink_rcv_msg+0xad2/0xe50 [ 60.233756][ T8370] ? tcf_free_cookie_rcu+0x50/0x50 [ 60.238843][ T8370] ? __mutex_lock_common+0x56e/0x2850 [ 60.244192][ T8370] ? rcu_lock_release+0x9/0x30 [ 60.248935][ T8370] ? tcf_free_cookie_rcu+0x50/0x50 [ 60.254020][ T8370] rtnetlink_rcv_msg+0xb19/0xe50 [ 60.258932][ T8370] ? rtnetlink_bind+0x80/0x80 [ 60.263600][ T8370] ? trace_lock_acquire+0x1d0/0x1d0 [ 60.268811][ T8370] netlink_rcv_skb+0x1f0/0x460 [ 60.273559][ T8370] ? rtnetlink_bind+0x80/0x80 [ 60.278235][ T8370] ? netlink_ack+0xae0/0xae0 [ 60.282804][ T8370] ? check_preemption_disabled+0x47/0x2a0 [ 60.288528][ T8370] rtnetlink_rcv+0x1c/0x20 [ 60.292942][ T8370] netlink_unicast+0x809/0x9a0 [ 60.297684][ T8370] ? netlink_detachskb+0x50/0x50 [ 60.302599][ T8370] ? __check_object_size+0x313/0x400 [ 60.307864][ T8370] ? security_netlink_send+0x94/0xb0 [ 60.313133][ T8370] netlink_sendmsg+0xa70/0xd30 [ 60.317904][ T8370] ? netlink_getsockopt+0x9f0/0x9f0 [ 60.323085][ T8370] ? tomoyo_socket_sendmsg+0x25/0x30 [ 60.328362][ T8370] ? security_socket_sendmsg+0xa0/0xd0 [ 60.333803][ T8370] ? netlink_getsockopt+0x9f0/0x9f0 [ 60.338977][ T8370] ___sys_sendmsg+0x66b/0x9a0 [ 60.343629][ T8370] ? __sys_sendmsg_sock+0x100/0x100 [ 60.348805][ T8370] ? handle_mm_fault+0x10d0/0x6070 [ 60.353892][ T8370] ? __kasan_check_write+0x14/0x20 [ 60.358976][ T8370] ? __up_read+0x225/0x5b0 [ 60.363365][ T8370] ? __down_read+0x3d0/0x3d0 [ 60.367951][ T8370] ? __kasan_check_read+0x11/0x20 [ 60.372965][ T8370] ? __fdget+0x156/0x200 [ 60.377184][ T8370] __x64_sys_sendmsg+0x1cf/0x290 [ 60.382096][ T8370] ? __sys_sendmsg+0x250/0x250 [ 60.386853][ T8370] ? do_user_addr_fault+0x655/0xaf0 [ 60.392028][ T8370] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 60.397737][ T8370] ? do_syscall_64+0x1d/0x140 [ 60.402387][ T8370] do_syscall_64+0xfe/0x140 [ 60.406867][ T8370] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 60.412732][ T8370] RIP: 0033:0x4401d9 [ 60.416622][ T8370] 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 [ 60.436231][ T8370] RSP: 002b:00007ffec95e4f88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 60.444633][ T8370] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 60.452580][ T8370] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 60.460525][ T8370] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 60.468489][ T8370] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 60.476434][ T8370] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 60.484397][ T8370] Modules linked in: [ 60.490160][ T8370] ---[ end trace 7ab76c817ec0fda1 ]--- [ 60.495943][ T8370] RIP: 0010:tcf_ife_init+0xff/0x1630 [ 60.501208][ T8370] Code: 00 74 08 4c 89 ef e8 d0 17 8e fb 48 8d 9c 24 a0 00 00 00 48 c7 84 24 50 01 00 00 00 00 00 00 4d 8d 6e 04 4c 89 f0 48 c1 e8 03 <42> 8a 04 38 84 c0 0f 85 ca 12 00 00 41 0f b7 0e 83 c1 fc 48 89 df [ 60.521615][ T8370] RSP: 0018:ffff88808f926c00 EFLAGS: 00010246 [ 60.528188][ T8370] RAX: 0000000000000000 RBX: ffff88808f926ca0 RCX: 000000008f926b03 [ 60.536546][ T8370] RDX: ffff8880956e0f98 RSI: ffffffff88cd6340 RDI: 0000000000000282 [ 60.545356][ T8370] RBP: ffff88808f926dd8 R08: dffffc0000000000 R09: fffffbfff11fba3d [ 60.553778][ T8370] R10: fffffbfff11fba3d R11: 0000000000000000 R12: 1ffff11011f24daa [ 60.566320][ T8370] R13: 0000000000000004 R14: 0000000000000000 R15: dffffc0000000000 [ 60.575868][ T8370] FS: 000055555607c880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 [ 60.584906][ T8370] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.591648][ T8370] CR2: 000055ec284e2100 CR3: 00000000a0109000 CR4: 00000000001406e0 [ 60.600157][ T8370] Kernel panic - not syncing: Fatal exception [ 60.607123][ T8370] Kernel Offset: disabled [ 60.611441][ T8370] Rebooting in 86400 seconds..