[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 62.496282][ T27] audit: type=1800 audit(1563577243.719:25): pid=9135 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 62.520157][ T27] audit: type=1800 audit(1563577243.729:26): pid=9135 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 62.590762][ T27] audit: type=1800 audit(1563577243.729:27): pid=9135 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 '10.128.0.252' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 71.954222][ T9287] netlink: 4 bytes leftover after parsing attributes in process `syz-executor901'. [ 71.963714][ T9287] kasan: CONFIG_KASAN_INLINE enabled [ 71.969054][ T9287] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 71.977179][ T9287] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 71.984126][ T9287] CPU: 1 PID: 9287 Comm: syz-executor901 Not tainted 5.2.0+ #67 [ 71.991734][ T9287] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.001786][ T9287] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 72.007151][ T9287] Code: 00 00 48 c7 c7 80 bf da 88 e8 c0 6d 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 [ 72.026856][ T9287] RSP: 0018:ffff88808f716eb8 EFLAGS: 00010246 [ 72.032912][ T9287] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101153a110 [ 72.040869][ T9287] RDX: 0000000000000000 RSI: 1ffff1101153a117 RDI: 0000000000000286 [ 72.048825][ T9287] RBP: ffff88808f717060 R08: 0000000000000002 R09: ffff88808a9d0888 [ 72.056811][ T9287] R10: fffffbfff1349ef7 R11: ffffffff89a4f7bf R12: 0000000000000001 [ 72.064770][ T9287] R13: ffff88809b70bb00 R14: ffff88808f7178c0 R15: 0000000000000000 [ 72.072724][ T9287] FS: 0000555556b65880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 72.081632][ T9287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.088198][ T9287] CR2: 0000000020000180 CR3: 00000000a055d000 CR4: 00000000001406e0 [ 72.096165][ T9287] Call Trace: [ 72.099624][ T9287] ? tc_lookup_action_n+0xd2/0x100 [ 72.104728][ T9287] ? __add_metainfo+0x480/0x480 [ 72.109557][ T9287] ? tc_lookup_action_n+0xd2/0x100 [ 72.114650][ T9287] ? __kasan_check_read+0x11/0x20 [ 72.119674][ T9287] ? lock_downgrade+0x920/0x920 [ 72.124520][ T9287] ? __kasan_check_write+0x14/0x20 [ 72.129628][ T9287] ? do_raw_read_unlock+0x3f/0x70 [ 72.134671][ T9287] tcf_action_init_1+0x6f2/0xa80 [ 72.139602][ T9287] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.145827][ T9287] ? tcf_action_dump_old+0x80/0x80 [ 72.150927][ T9287] ? lock_downgrade+0x920/0x920 [ 72.155779][ T9287] ? __kasan_check_read+0x11/0x20 [ 72.160813][ T9287] ? mark_lock+0xc0/0x11e0 [ 72.165226][ T9287] tcf_action_init+0x241/0x360 [ 72.170013][ T9287] ? tcf_action_init_1+0xa80/0xa80 [ 72.175109][ T9287] ? mark_lock+0xc0/0x11e0 [ 72.179511][ T9287] ? mark_lock+0xc0/0x11e0 [ 72.183923][ T9287] ? __kasan_check_read+0x11/0x20 [ 72.188943][ T9287] tcf_action_add+0xe8/0x370 [ 72.193549][ T9287] ? tca_action_gd+0x1710/0x1710 [ 72.198486][ T9287] ? refcount_dec_not_one+0x1f0/0x1f0 [ 72.203850][ T9287] ? __nla_parse+0x43/0x60 [ 72.208408][ T9287] tc_ctl_action+0x3b5/0x4bc [ 72.212988][ T9287] ? tcf_action_add+0x370/0x370 [ 72.217843][ T9287] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.224065][ T9287] ? tcf_action_add+0x370/0x370 [ 72.228892][ T9287] rtnetlink_rcv_msg+0x463/0xb00 [ 72.233819][ T9287] ? rtnetlink_put_metrics+0x580/0x580 [ 72.239265][ T9287] ? lock_downgrade+0x920/0x920 [ 72.244119][ T9287] ? netlink_deliver_tap+0x22d/0xbf0 [ 72.249392][ T9287] ? find_held_lock+0x35/0x130 [ 72.254160][ T9287] netlink_rcv_skb+0x177/0x450 [ 72.258909][ T9287] ? rtnetlink_put_metrics+0x580/0x580 [ 72.264354][ T9287] ? netlink_ack+0xb30/0xb30 [ 72.268950][ T9287] ? __kasan_check_read+0x11/0x20 [ 72.273984][ T9287] ? netlink_deliver_tap+0x254/0xbf0 [ 72.279259][ T9287] rtnetlink_rcv+0x1d/0x30 [ 72.283660][ T9287] netlink_unicast+0x531/0x710 [ 72.288412][ T9287] ? netlink_attachskb+0x7c0/0x7c0 [ 72.293510][ T9287] ? _copy_from_iter_full+0x25d/0x8a0 [ 72.298873][ T9287] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 72.304597][ T9287] ? __check_object_size+0x3d/0x43c [ 72.309786][ T9287] netlink_sendmsg+0x8a5/0xd60 [ 72.314537][ T9287] ? netlink_unicast+0x710/0x710 [ 72.319458][ T9287] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 72.325009][ T9287] ? apparmor_socket_sendmsg+0x2a/0x30 [ 72.330453][ T9287] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.336679][ T9287] ? security_socket_sendmsg+0x8d/0xc0 [ 72.342134][ T9287] ? netlink_unicast+0x710/0x710 [ 72.347069][ T9287] sock_sendmsg+0xd7/0x130 [ 72.351472][ T9287] ___sys_sendmsg+0x803/0x920 [ 72.356134][ T9287] ? copy_msghdr_from_user+0x440/0x440 [ 72.361578][ T9287] ? prep_transhuge_page+0xa0/0xa0 [ 72.366681][ T9287] ? percpu_counter_add_batch+0x13c/0x190 [ 72.372410][ T9287] ? __do_page_fault+0x56a/0xdd0 [ 72.377349][ T9287] ? find_held_lock+0x35/0x130 [ 72.382117][ T9287] ? __do_page_fault+0x56a/0xdd0 [ 72.387083][ T9287] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.393307][ T9287] ? __fget_light+0x1a9/0x230 [ 72.397973][ T9287] ? __fdget+0x1b/0x20 [ 72.402028][ T9287] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 72.408283][ T9287] __sys_sendmsg+0x105/0x1d0 [ 72.412885][ T9287] ? __sys_sendmsg_sock+0xd0/0xd0 [ 72.417897][ T9287] ? down_read_non_owner+0x450/0x450 [ 72.423185][ T9287] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 72.428640][ T9287] ? do_syscall_64+0x26/0x6a0 [ 72.433297][ T9287] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.439360][ T9287] ? do_syscall_64+0x26/0x6a0 [ 72.444026][ T9287] __x64_sys_sendmsg+0x78/0xb0 [ 72.448771][ T9287] do_syscall_64+0xfd/0x6a0 [ 72.453259][ T9287] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.459129][ T9287] RIP: 0033:0x4401d9 [ 72.463027][ T9287] 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 [ 72.482643][ T9287] RSP: 002b:00007fffd91162f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 72.491043][ T9287] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401d9 [ 72.499002][ T9287] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 72.506964][ T9287] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 72.514936][ T9287] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a60 [ 72.522953][ T9287] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 72.531020][ T9287] Modules linked in: [ 72.536312][ T9287] ---[ end trace e87c71de65d00f4c ]--- [ 72.541938][ T9287] RIP: 0010:tcf_ife_init+0x25c/0x1850 [ 72.547300][ T9287] Code: 00 00 48 c7 c7 80 bf da 88 e8 c0 6d 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 [ 72.566992][ T9287] RSP: 0018:ffff88808f716eb8 EFLAGS: 00010246 [ 72.573136][ T9287] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101153a110 [ 72.581354][ T9287] RDX: 0000000000000000 RSI: 1ffff1101153a117 RDI: 0000000000000286 [ 72.589336][ T9287] RBP: ffff88808f717060 R08: 0000000000000002 R09: ffff88808a9d0888 [ 72.597358][ T9287] R10: fffffbfff1349ef7 R11: ffffffff89a4f7bf R12: 0000000000000001 [ 72.605503][ T9287] R13: ffff88809b70bb00 R14: ffff88808f7178c0 R15: 0000000000000000 [ 72.613779][ T9287] FS: 0000555556b65880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 72.622848][ T9287] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.629427][ T9287] CR2: 0000000020000180 CR3: 00000000a055d000 CR4: 00000000001406e0 [ 72.637453][ T9287] Kernel panic - not syncing: Fatal exception [ 72.644661][ T9287] Kernel Offset: disabled [ 72.648990][ T9287] Rebooting in 86400 seconds..