[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 47.448740][ T26] audit: type=1800 audit(1563573377.223:25): pid=8173 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 47.491071][ T26] audit: type=1800 audit(1563573377.233:26): pid=8173 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 47.535778][ T26] audit: type=1800 audit(1563573377.233:27): pid=8173 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 '10.128.0.61' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 59.401518][ T8323] netlink: 4 bytes leftover after parsing attributes in process `syz-executor036'. [ 59.411381][ T8323] kasan: CONFIG_KASAN_INLINE enabled [ 59.416860][ T8323] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 59.425125][ T8323] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 59.432206][ T8323] CPU: 0 PID: 8323 Comm: syz-executor036 Not tainted 5.2.0+ #35 [ 59.439816][ T8323] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.449990][ T8323] RIP: 0010:tcf_ife_init+0xff/0x1630 [ 59.455655][ T8323] 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 [ 59.475882][ T8323] RSP: 0018:ffff888085eeec00 EFLAGS: 00010246 [ 59.481933][ T8323] RAX: 0000000000000000 RBX: ffff888085eeeca0 RCX: 0000000085eeeb03 [ 59.489982][ T8323] RDX: ffff88809285ce18 RSI: ffffffff88cd6340 RDI: 0000000000000282 [ 59.498111][ T8323] RBP: ffff888085eeedd8 R08: dffffc0000000000 R09: fffffbfff11fba3d [ 59.506133][ T8323] R10: fffffbfff11fba3d R11: 0000000000000000 R12: 1ffff11010bdddaa [ 59.514263][ T8323] R13: 0000000000000004 R14: 0000000000000000 R15: dffffc0000000000 [ 59.522314][ T8323] FS: 0000555556f68880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 59.531234][ T8323] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.537900][ T8323] CR2: 0000000020000180 CR3: 000000008c724000 CR4: 00000000001406f0 [ 59.545988][ T8323] Call Trace: [ 59.549277][ T8323] ? unwind_get_return_address_ptr+0xa0/0xa0 [ 59.555260][ T8323] ? tcf_ife_search+0x40/0x40 [ 59.559927][ T8323] ? tcf_action_init_1+0x2e4/0xd40 [ 59.565114][ T8323] ? __kasan_check_write+0x14/0x20 [ 59.570352][ T8323] ? do_raw_read_unlock+0x42/0xf0 [ 59.575471][ T8323] ? tcf_ife_search+0x40/0x40 [ 59.580194][ T8323] tcf_action_init_1+0x786/0xd40 [ 59.585184][ T8323] ? tcf_action_dump+0x290/0x290 [ 59.590165][ T8323] ? __nla_validate+0x50/0x50 [ 59.594885][ T8323] ? mark_lock+0x152/0x1850 [ 59.599461][ T8323] ? __nla_parse+0x41/0x50 [ 59.603869][ T8323] tcf_action_init+0x183/0x490 [ 59.608626][ T8323] ? tcf_action_init_1+0xd40/0xd40 [ 59.613880][ T8323] ? __nla_validate_parse+0x18f4/0x2010 [ 59.619516][ T8323] ? security_capable+0xa2/0xd0 [ 59.624476][ T8323] tc_ctl_action+0x3ad/0x920 [ 59.629107][ T8323] ? rtnetlink_rcv_msg+0xad2/0xe50 [ 59.634210][ T8323] ? tcf_free_cookie_rcu+0x50/0x50 [ 59.639305][ T8323] ? __mutex_lock_common+0x56e/0x2850 [ 59.644807][ T8323] ? rcu_lock_release+0x9/0x30 [ 59.649563][ T8323] ? tcf_free_cookie_rcu+0x50/0x50 [ 59.654714][ T8323] rtnetlink_rcv_msg+0xb19/0xe50 [ 59.659726][ T8323] ? rtnetlink_bind+0x80/0x80 [ 59.664392][ T8323] ? trace_lock_acquire+0x1d0/0x1d0 [ 59.669596][ T8323] netlink_rcv_skb+0x1f0/0x460 [ 59.674473][ T8323] ? rtnetlink_bind+0x80/0x80 [ 59.679346][ T8323] ? netlink_ack+0xae0/0xae0 [ 59.683926][ T8323] ? check_preemption_disabled+0x47/0x2a0 [ 59.690015][ T8323] rtnetlink_rcv+0x1c/0x20 [ 59.694429][ T8323] netlink_unicast+0x809/0x9a0 [ 59.699184][ T8323] ? netlink_detachskb+0x50/0x50 [ 59.704109][ T8323] ? __check_object_size+0x313/0x400 [ 59.709613][ T8323] ? security_netlink_send+0x94/0xb0 [ 59.714984][ T8323] netlink_sendmsg+0xa70/0xd30 [ 59.720136][ T8323] ? netlink_getsockopt+0x9f0/0x9f0 [ 59.725330][ T8323] ? tomoyo_socket_sendmsg+0x25/0x30 [ 59.730605][ T8323] ? security_socket_sendmsg+0xa0/0xd0 [ 59.736256][ T8323] ? netlink_getsockopt+0x9f0/0x9f0 [ 59.741600][ T8323] ___sys_sendmsg+0x66b/0x9a0 [ 59.746263][ T8323] ? __sys_sendmsg_sock+0x100/0x100 [ 59.751451][ T8323] ? handle_mm_fault+0x10d0/0x6070 [ 59.756685][ T8323] ? __kasan_check_write+0x14/0x20 [ 59.761850][ T8323] ? __up_read+0x225/0x5b0 [ 59.766256][ T8323] ? __down_read+0x3d0/0x3d0 [ 59.770831][ T8323] ? __kasan_check_read+0x11/0x20 [ 59.775846][ T8323] ? __fdget+0x156/0x200 [ 59.780100][ T8323] __x64_sys_sendmsg+0x1cf/0x290 [ 59.785195][ T8323] ? __sys_sendmsg+0x250/0x250 [ 59.790093][ T8323] ? do_user_addr_fault+0x655/0xaf0 [ 59.795527][ T8323] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 59.801332][ T8323] ? do_syscall_64+0x1d/0x140 [ 59.806193][ T8323] do_syscall_64+0xfe/0x140 [ 59.811054][ T8323] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.816948][ T8323] RIP: 0033:0x4401d9 [ 59.820829][ T8323] 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 [ 59.840670][ T8323] RSP: 002b:00007ffdee539618 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.849070][ T8323] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 59.857276][ T8323] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 59.865235][ T8323] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 59.873332][ T8323] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 59.881292][ T8323] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 59.889388][ T8323] Modules linked in: [ 59.893936][ T8323] ---[ end trace 998733f7068d6a2d ]--- [ 59.899675][ T8323] RIP: 0010:tcf_ife_init+0xff/0x1630 [ 59.905031][ T8323] 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 [ 59.925102][ T8323] RSP: 0018:ffff888085eeec00 EFLAGS: 00010246 [ 59.931464][ T8323] RAX: 0000000000000000 RBX: ffff888085eeeca0 RCX: 0000000085eeeb03 [ 59.939904][ T8323] RDX: ffff88809285ce18 RSI: ffffffff88cd6340 RDI: 0000000000000282 [ 59.948138][ T8323] RBP: ffff888085eeedd8 R08: dffffc0000000000 R09: fffffbfff11fba3d [ 59.956394][ T8323] R10: fffffbfff11fba3d R11: 0000000000000000 R12: 1ffff11010bdddaa [ 59.964391][ T8323] R13: 0000000000000004 R14: 0000000000000000 R15: dffffc0000000000 [ 59.972386][ T8323] FS: 0000555556f68880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 59.989449][ T8323] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.996135][ T8323] CR2: 0000000020000180 CR3: 000000008c724000 CR4: 00000000001406f0 [ 60.004136][ T8323] Kernel panic - not syncing: Fatal exception [ 60.011537][ T8323] Kernel Offset: disabled [ 60.015865][ T8323] Rebooting in 86400 seconds..