[ 68.496432][ T27] audit: type=1800 audit(1584411369.816:24): pid=9640 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="sudo" dev="sda1" ino=2454 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 69.140745][ T27] audit: type=1800 audit(1584411370.556:25): pid=9640 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 69.161073][ T27] audit: type=1800 audit(1584411370.556:26): pid=9640 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 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 '10.128.0.125' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 81.125665][ T9793] IPVS: ftp: loaded support on port[0] = 21 [ 81.167492][ T9796] ------------[ cut here ]------------ [ 81.173021][ T9796] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 81.182035][ T9796] WARNING: CPU: 1 PID: 9796 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 81.191470][ T9796] Kernel panic - not syncing: panic_on_warn set ... [ 81.198035][ T9796] CPU: 1 PID: 9796 Comm: syz-executor666 Not tainted 5.6.0-rc6-syzkaller #0 [ 81.206678][ T9796] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.216719][ T9796] Call Trace: [ 81.220002][ T9796] dump_stack+0x188/0x20d [ 81.224314][ T9796] ? debug_print_object+0x120/0x250 [ 81.229499][ T9796] panic+0x2e3/0x75c [ 81.233380][ T9796] ? add_taint.cold+0x16/0x16 [ 81.238044][ T9796] ? __probe_kernel_read+0x188/0x1d0 [ 81.243312][ T9796] ? __warn.cold+0x14/0x35 [ 81.247706][ T9796] ? __warn+0xd5/0x1c8 [ 81.251774][ T9796] ? debug_print_object+0x160/0x250 [ 81.256990][ T9796] __warn.cold+0x2f/0x35 [ 81.261213][ T9796] ? debug_print_object+0x160/0x250 [ 81.266391][ T9796] report_bug+0x27b/0x2f0 [ 81.270715][ T9796] do_error_trap+0x12b/0x220 [ 81.275295][ T9796] ? debug_print_object+0x160/0x250 [ 81.280479][ T9796] do_invalid_op+0x32/0x40 [ 81.284876][ T9796] ? debug_print_object+0x160/0x250 [ 81.290061][ T9796] invalid_op+0x23/0x30 [ 81.294197][ T9796] RIP: 0010:debug_print_object+0x160/0x250 [ 81.299984][ T9796] Code: dd c0 f3 51 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd c0 f3 51 88 48 c7 c7 20 e9 51 88 e8 d8 cc b1 fd <0f> 0b 83 05 ab 9a d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 81.319565][ T9796] RSP: 0018:ffffc90002137178 EFLAGS: 00010282 [ 81.325608][ T9796] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 81.333556][ T9796] RDX: 0000000000000000 RSI: ffffffff815c06c1 RDI: fffff52000426e21 [ 81.341506][ T9796] RBP: 0000000000000001 R08: ffff88809e2362c0 R09: ffffed1015ce6659 [ 81.349462][ T9796] R10: ffffed1015ce6658 R11: ffff8880ae7332c7 R12: ffffffff897acba0 [ 81.357423][ T9796] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000426e3c [ 81.365391][ T9796] ? vprintk_func+0x81/0x17e [ 81.369967][ T9796] ? debug_print_object+0x160/0x250 [ 81.375147][ T9796] ? lockdep_hardirqs_on+0x417/0x5d0 [ 81.380419][ T9796] debug_object_activate+0x346/0x470 [ 81.385719][ T9796] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 81.391508][ T9796] ? debug_object_init_on_stack+0x20/0x20 [ 81.397240][ T9796] ? find_held_lock+0x2d/0x110 [ 81.401990][ T9796] ? free_object+0x70/0x70 [ 81.406393][ T9796] ? lock_downgrade+0x7f0/0x7f0 [ 81.411228][ T9796] ? delayed_work_timer_fn+0x90/0x90 [ 81.416511][ T9796] call_rcu+0x2c/0x690 [ 81.420571][ T9796] queue_rcu_work+0x82/0xa0 [ 81.425059][ T9796] route4_change+0x19e8/0x2250 [ 81.429833][ T9796] ? route4_destroy+0x800/0x800 [ 81.434681][ T9796] ? wait_for_completion+0x3c0/0x3c0 [ 81.439954][ T9796] tc_new_tfilter+0xa59/0x20b0 [ 81.444765][ T9796] ? route4_destroy+0x800/0x800 [ 81.449601][ T9796] ? tc_del_tfilter+0x1430/0x1430 [ 81.454636][ T9796] ? __lock_acquire+0x80b/0x3ca0 [ 81.459582][ T9796] ? apparmor_capable+0x454/0x8a0 [ 81.464598][ T9796] ? rcu_read_lock_held+0x9c/0xb0 [ 81.469608][ T9796] ? tc_del_tfilter+0x1430/0x1430 [ 81.474613][ T9796] rtnetlink_rcv_msg+0x810/0xad0 [ 81.479534][ T9796] ? rtnl_bridge_getlink+0x880/0x880 [ 81.484843][ T9796] ? mark_held_locks+0xe0/0xe0 [ 81.489605][ T9796] ? netlink_deliver_tap+0x146/0xb50 [ 81.494891][ T9796] netlink_rcv_skb+0x15a/0x410 [ 81.499636][ T9796] ? rtnl_bridge_getlink+0x880/0x880 [ 81.504901][ T9796] ? netlink_ack+0xa80/0xa80 [ 81.509511][ T9796] netlink_unicast+0x537/0x740 [ 81.514257][ T9796] ? netlink_attachskb+0x810/0x810 [ 81.519386][ T9796] ? _copy_from_iter_full+0x25c/0x870 [ 81.524740][ T9796] ? __phys_addr_symbol+0x2c/0x70 [ 81.529744][ T9796] ? __check_object_size+0x171/0x437 [ 81.535012][ T9796] netlink_sendmsg+0x882/0xe10 [ 81.539760][ T9796] ? aa_af_perm+0x260/0x260 [ 81.544242][ T9796] ? netlink_unicast+0x740/0x740 [ 81.549216][ T9796] ? netlink_unicast+0x740/0x740 [ 81.554153][ T9796] sock_sendmsg+0xcf/0x120 [ 81.558556][ T9796] ____sys_sendmsg+0x6b9/0x7d0 [ 81.563306][ T9796] ? kernel_sendmsg+0x50/0x50 [ 81.568028][ T9796] ___sys_sendmsg+0x100/0x170 [ 81.572697][ T9796] ? sendmsg_copy_msghdr+0x70/0x70 [ 81.577799][ T9796] ? __fget_files+0x329/0x4f0 [ 81.582473][ T9796] ? ksys_dup3+0x3c0/0x3c0 [ 81.586886][ T9796] ? __fget_light+0x208/0x270 [ 81.591550][ T9796] __sys_sendmsg+0xec/0x1b0 [ 81.596050][ T9796] ? __sys_sendmsg_sock+0xb0/0xb0 [ 81.601074][ T9796] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 81.607046][ T9796] ? __x64_sys_futex+0x380/0x4f0 [ 81.611974][ T9796] ? trace_hardirqs_off_caller+0x55/0x230 [ 81.617678][ T9796] ? do_syscall_64+0x21/0x7d0 [ 81.622343][ T9796] do_syscall_64+0xf6/0x7d0 [ 81.626833][ T9796] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.632730][ T9796] RIP: 0033:0x4478a9 [ 81.636615][ T9796] Code: e8 5c b5 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 ab 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 81.656204][ T9796] RSP: 002b:00007f6505e76d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 81.664609][ T9796] RAX: ffffffffffffffda RBX: 00000000006e2a18 RCX: 00000000004478a9 [ 81.672558][ T9796] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 [ 81.680508][ T9796] RBP: 00000000006e2a10 R08: 0000000000000000 R09: 0000000000000000 [ 81.688457][ T9796] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006e2a1c [ 81.696408][ T9796] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 81.705540][ T9796] Kernel Offset: disabled [ 81.709915][ T9796] Rebooting in 86400 seconds..