[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 46.833340][ T26] audit: type=1800 audit(1563579252.652:25): pid=8129 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 46.855157][ T26] audit: type=1800 audit(1563579252.662:26): pid=8129 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 46.899724][ T26] audit: type=1800 audit(1563579252.662:27): pid=8129 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 '10.128.0.104' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 57.822416][ T8282] netlink: 4 bytes leftover after parsing attributes in process `syz-executor126'. [ 57.831876][ T8282] kasan: CONFIG_KASAN_INLINE enabled [ 57.837230][ T8282] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 57.845456][ T8282] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 57.852371][ T8282] CPU: 0 PID: 8282 Comm: syz-executor126 Not tainted 5.2.0+ #35 [ 57.859974][ T8282] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.870043][ T8282] RIP: 0010:tcf_ife_init+0xff/0x1630 [ 57.875305][ T8282] 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 [ 57.894888][ T8282] RSP: 0018:ffff888091c1ec00 EFLAGS: 00010246 [ 57.900945][ T8282] RAX: 0000000000000000 RBX: ffff888091c1eca0 RCX: 0000000091c1eb03 [ 57.908894][ T8282] RDX: ffff888091c3ead8 RSI: ffffffff88cd6340 RDI: 0000000000000282 [ 57.916837][ T8282] RBP: ffff888091c1edd8 R08: dffffc0000000000 R09: fffffbfff11fba3d [ 57.924780][ T8282] R10: fffffbfff11fba3d R11: 0000000000000000 R12: 1ffff11012383daa [ 57.932748][ T8282] R13: 0000000000000004 R14: 0000000000000000 R15: dffffc0000000000 [ 57.940707][ T8282] FS: 0000555555745880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 57.949612][ T8282] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.956166][ T8282] CR2: 0000000020000180 CR3: 000000008e2f6000 CR4: 00000000001406f0 [ 57.964116][ T8282] Call Trace: [ 57.967392][ T8282] ? unwind_get_return_address_ptr+0xa0/0xa0 [ 57.973347][ T8282] ? tcf_ife_search+0x40/0x40 [ 57.978022][ T8282] ? tcf_action_init_1+0x2e4/0xd40 [ 57.983109][ T8282] ? __kasan_check_write+0x14/0x20 [ 57.988192][ T8282] ? do_raw_read_unlock+0x42/0xf0 [ 57.993186][ T8282] ? tcf_ife_search+0x40/0x40 [ 57.997838][ T8282] tcf_action_init_1+0x786/0xd40 [ 58.002784][ T8282] ? tcf_action_dump+0x290/0x290 [ 58.007706][ T8282] ? __nla_validate+0x50/0x50 [ 58.012368][ T8282] ? mark_lock+0x152/0x1850 [ 58.016846][ T8282] ? __nla_parse+0x41/0x50 [ 58.021234][ T8282] tcf_action_init+0x183/0x490 [ 58.025971][ T8282] ? tcf_action_init_1+0xd40/0xd40 [ 58.031053][ T8282] ? __nla_validate_parse+0x18f4/0x2010 [ 58.036604][ T8282] ? security_capable+0xa2/0xd0 [ 58.041430][ T8282] tc_ctl_action+0x3ad/0x920 [ 58.046002][ T8282] ? rtnetlink_rcv_msg+0xad2/0xe50 [ 58.051113][ T8282] ? tcf_free_cookie_rcu+0x50/0x50 [ 58.056196][ T8282] ? __mutex_lock_common+0x56e/0x2850 [ 58.061543][ T8282] ? rcu_lock_release+0x9/0x30 [ 58.066298][ T8282] ? tcf_free_cookie_rcu+0x50/0x50 [ 58.071384][ T8282] rtnetlink_rcv_msg+0xb19/0xe50 [ 58.076313][ T8282] ? rtnetlink_bind+0x80/0x80 [ 58.080965][ T8282] ? trace_lock_acquire+0x1d0/0x1d0 [ 58.086148][ T8282] netlink_rcv_skb+0x1f0/0x460 [ 58.090882][ T8282] ? rtnetlink_bind+0x80/0x80 [ 58.095529][ T8282] ? netlink_ack+0xae0/0xae0 [ 58.100118][ T8282] ? check_preemption_disabled+0x47/0x2a0 [ 58.105813][ T8282] rtnetlink_rcv+0x1c/0x20 [ 58.110217][ T8282] netlink_unicast+0x809/0x9a0 [ 58.114971][ T8282] ? netlink_detachskb+0x50/0x50 [ 58.119881][ T8282] ? __check_object_size+0x313/0x400 [ 58.125138][ T8282] ? security_netlink_send+0x94/0xb0 [ 58.130393][ T8282] netlink_sendmsg+0xa70/0xd30 [ 58.135134][ T8282] ? netlink_getsockopt+0x9f0/0x9f0 [ 58.140305][ T8282] ? tomoyo_socket_sendmsg+0x25/0x30 [ 58.145576][ T8282] ? security_socket_sendmsg+0xa0/0xd0 [ 58.151023][ T8282] ? netlink_getsockopt+0x9f0/0x9f0 [ 58.156211][ T8282] ___sys_sendmsg+0x66b/0x9a0 [ 58.160864][ T8282] ? __sys_sendmsg_sock+0x100/0x100 [ 58.166054][ T8282] ? handle_mm_fault+0x10d0/0x6070 [ 58.171141][ T8282] ? __kasan_check_write+0x14/0x20 [ 58.176241][ T8282] ? __up_read+0x225/0x5b0 [ 58.180648][ T8282] ? __down_read+0x3d0/0x3d0 [ 58.185244][ T8282] ? __kasan_check_read+0x11/0x20 [ 58.190238][ T8282] ? __fdget+0x156/0x200 [ 58.194455][ T8282] __x64_sys_sendmsg+0x1cf/0x290 [ 58.199364][ T8282] ? __sys_sendmsg+0x250/0x250 [ 58.204106][ T8282] ? do_user_addr_fault+0x655/0xaf0 [ 58.209311][ T8282] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 58.215031][ T8282] ? do_syscall_64+0x1d/0x140 [ 58.219686][ T8282] do_syscall_64+0xfe/0x140 [ 58.224167][ T8282] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.230027][ T8282] RIP: 0033:0x4401d9 [ 58.233888][ T8282] 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 [ 58.253486][ T8282] RSP: 002b:00007ffcc7f15d68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.261870][ T8282] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 58.269815][ T8282] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 58.277772][ T8282] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 58.285717][ T8282] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 58.293664][ T8282] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 58.301610][ T8282] Modules linked in: [ 58.306170][ T8282] ---[ end trace 75ba90e40ddf9ab7 ]--- [ 58.311643][ T8282] RIP: 0010:tcf_ife_init+0xff/0x1630 [ 58.317044][ T8282] 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 [ 58.336679][ T8282] RSP: 0018:ffff888091c1ec00 EFLAGS: 00010246 [ 58.342736][ T8282] RAX: 0000000000000000 RBX: ffff888091c1eca0 RCX: 0000000091c1eb03 [ 58.350715][ T8282] RDX: ffff888091c3ead8 RSI: ffffffff88cd6340 RDI: 0000000000000282 [ 58.358695][ T8282] RBP: ffff888091c1edd8 R08: dffffc0000000000 R09: fffffbfff11fba3d [ 58.366678][ T8282] R10: fffffbfff11fba3d R11: 0000000000000000 R12: 1ffff11012383daa [ 58.374659][ T8282] R13: 0000000000000004 R14: 0000000000000000 R15: dffffc0000000000 [ 58.382616][ T8282] FS: 0000555555745880(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 [ 58.391577][ T8282] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.398186][ T8282] CR2: ffffffffff600400 CR3: 000000008e2f6000 CR4: 00000000001406f0 [ 58.406191][ T8282] Kernel panic - not syncing: Fatal exception [ 58.413270][ T8282] Kernel Offset: disabled [ 58.417591][ T8282] Rebooting in 86400 seconds..