[ 67.781615][ T27] audit: type=1800 audit(1584347272.275:24): pid=9433 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. [ 68.507429][ T27] audit: type=1800 audit(1584347273.085:25): pid=9433 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 68.530871][ T27] audit: type=1800 audit(1584347273.085:26): pid=9433 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 '10.128.0.12' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 76.762367][ T9586] IPVS: ftp: loaded support on port[0] = 21 [ 76.806704][ T9593] ------------[ cut here ]------------ [ 76.812543][ T9593] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 76.821504][ T9593] WARNING: CPU: 1 PID: 9593 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 76.830986][ T9593] Kernel panic - not syncing: panic_on_warn set ... [ 76.837572][ T9593] CPU: 1 PID: 9593 Comm: syz-executor323 Not tainted 5.6.0-rc5-syzkaller #0 [ 76.846448][ T9593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.856508][ T9593] Call Trace: [ 76.859792][ T9593] dump_stack+0x188/0x20d [ 76.864118][ T9593] ? debug_print_object+0x80/0x250 [ 76.869228][ T9593] panic+0x2e3/0x75c [ 76.873111][ T9593] ? add_taint.cold+0x16/0x16 [ 76.877780][ T9593] ? __probe_kernel_read+0x188/0x1d0 [ 76.883045][ T9593] ? __warn.cold+0x14/0x35 [ 76.887444][ T9593] ? __warn+0xd5/0x1c8 [ 76.891506][ T9593] ? debug_print_object+0x160/0x250 [ 76.896696][ T9593] __warn.cold+0x2f/0x35 [ 76.900923][ T9593] ? debug_print_object+0x160/0x250 [ 76.906128][ T9593] report_bug+0x27b/0x2f0 [ 76.910445][ T9593] do_error_trap+0x12b/0x220 [ 76.915038][ T9593] ? debug_print_object+0x160/0x250 [ 76.920231][ T9593] do_invalid_op+0x32/0x40 [ 76.924630][ T9593] ? debug_print_object+0x160/0x250 [ 76.929824][ T9593] invalid_op+0x23/0x30 [ 76.933965][ T9593] RIP: 0010:debug_print_object+0x160/0x250 [ 76.939766][ T9593] Code: dd 40 f4 51 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bf 00 00 00 48 8b 14 dd 40 f4 51 88 48 c7 c7 a0 e9 51 88 e8 38 d4 b1 fd <0f> 0b 83 05 0b b3 d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 76.959359][ T9593] RSP: 0018:ffffc90001dc7178 EFLAGS: 00010282 [ 76.965564][ T9593] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 76.973536][ T9593] RDX: 0000000000000000 RSI: ffffffff815bf511 RDI: fffff520003b8e21 [ 76.981635][ T9593] RBP: 0000000000000001 R08: ffff888093376640 R09: fffffbfff180e578 [ 76.989906][ T9593] R10: fffffbfff180e577 R11: ffffffff8c072bbf R12: ffffffff897acba0 [ 76.997870][ T9593] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920003b8e3c [ 77.005845][ T9593] ? vprintk_func+0x81/0x17e [ 77.010514][ T9593] ? debug_print_object+0x160/0x250 [ 77.015700][ T9593] ? lockdep_hardirqs_on+0x417/0x5d0 [ 77.020984][ T9593] debug_object_activate+0x346/0x470 [ 77.026790][ T9593] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 77.032587][ T9593] ? debug_object_init_on_stack+0x20/0x20 [ 77.038631][ T9593] ? find_held_lock+0x2d/0x110 [ 77.044636][ T9593] ? free_object+0x70/0x70 [ 77.049233][ T9593] ? lock_downgrade+0x7f0/0x7f0 [ 77.054091][ T9593] ? delayed_work_timer_fn+0x90/0x90 [ 77.059514][ T9593] call_rcu+0x2c/0x690 [ 77.063598][ T9593] queue_rcu_work+0x82/0xa0 [ 77.068402][ T9593] route4_change+0x19e8/0x2250 [ 77.073553][ T9593] ? route4_destroy+0x800/0x800 [ 77.078406][ T9593] ? wait_for_completion+0x3c0/0x3c0 [ 77.083730][ T9593] tc_new_tfilter+0xa59/0x20b0 [ 77.088489][ T9593] ? route4_destroy+0x800/0x800 [ 77.093354][ T9593] ? tc_del_tfilter+0x1430/0x1430 [ 77.098376][ T9593] ? __lock_acquire+0x80b/0x3ca0 [ 77.103344][ T9593] ? apparmor_capable+0x454/0x8a0 [ 77.108535][ T9593] ? rcu_read_lock_held+0x9c/0xb0 [ 77.113593][ T9593] ? tc_del_tfilter+0x1430/0x1430 [ 77.118623][ T9593] rtnetlink_rcv_msg+0x810/0xad0 [ 77.123566][ T9593] ? rtnl_bridge_getlink+0x880/0x880 [ 77.128847][ T9593] ? mark_held_locks+0xe0/0xe0 [ 77.133610][ T9593] ? netlink_deliver_tap+0x146/0xb50 [ 77.138886][ T9593] netlink_rcv_skb+0x15a/0x410 [ 77.143639][ T9593] ? rtnl_bridge_getlink+0x880/0x880 [ 77.148927][ T9593] ? netlink_ack+0xa80/0xa80 [ 77.153518][ T9593] netlink_unicast+0x537/0x740 [ 77.158273][ T9593] ? netlink_attachskb+0x810/0x810 [ 77.163367][ T9593] ? _copy_from_iter_full+0x25c/0x870 [ 77.168720][ T9593] ? __phys_addr_symbol+0x2c/0x70 [ 77.173740][ T9593] ? __check_object_size+0x171/0x437 [ 77.179016][ T9593] netlink_sendmsg+0x882/0xe10 [ 77.183767][ T9593] ? aa_af_perm+0x260/0x260 [ 77.188268][ T9593] ? netlink_unicast+0x740/0x740 [ 77.193212][ T9593] ? netlink_unicast+0x740/0x740 [ 77.198150][ T9593] sock_sendmsg+0xcf/0x120 [ 77.202549][ T9593] ____sys_sendmsg+0x6b9/0x7d0 [ 77.207297][ T9593] ? kernel_sendmsg+0x50/0x50 [ 77.211969][ T9593] ___sys_sendmsg+0x100/0x170 [ 77.216631][ T9593] ? sendmsg_copy_msghdr+0x70/0x70 [ 77.221751][ T9593] ? __fget_files+0x329/0x4f0 [ 77.226415][ T9593] ? ksys_dup3+0x3c0/0x3c0 [ 77.230820][ T9593] ? __fget_light+0x208/0x270 [ 77.235492][ T9593] __sys_sendmsg+0xec/0x1b0 [ 77.239978][ T9593] ? __sys_sendmsg_sock+0xb0/0xb0 [ 77.244984][ T9593] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 77.250956][ T9593] ? __x64_sys_futex+0x380/0x4f0 [ 77.255908][ T9593] ? trace_hardirqs_off_caller+0x55/0x230 [ 77.261641][ T9593] ? do_syscall_64+0x21/0x7d0 [ 77.266302][ T9593] do_syscall_64+0xf6/0x7d0 [ 77.270920][ T9593] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.276811][ T9593] RIP: 0033:0x446e89 [ 77.280724][ T9593] Code: e8 bc b4 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 [ 77.300605][ T9593] RSP: 002b:00007f8e4aa6ad98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 77.309007][ T9593] RAX: ffffffffffffffda RBX: 00000000006dbc78 RCX: 0000000000446e89 [ 77.317026][ T9593] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000006 [ 77.325000][ T9593] RBP: 00000000006dbc70 R08: 0000000000000000 R09: 0000000000000000 [ 77.332962][ T9593] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc7c [ 77.340941][ T9593] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 77.350455][ T9593] Kernel Offset: disabled [ 77.354843][ T9593] Rebooting in 86400 seconds..