[ 84.167085][ T27] audit: type=1800 audit(1583802784.617:26): pid=9677 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. [ 85.145114][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 85.145125][ T27] audit: type=1800 audit(1583802785.617:29): pid=9677 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 85.172070][ T27] audit: type=1800 audit(1583802785.617:30): pid=9677 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.21' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 96.108456][ T9830] IPVS: ftp: loaded support on port[0] = 21 [ 96.147802][ T9831] ------------[ cut here ]------------ [ 96.153747][ T9831] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 96.163549][ T9831] WARNING: CPU: 1 PID: 9831 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 96.173013][ T9831] Kernel panic - not syncing: panic_on_warn set ... [ 96.179613][ T9831] CPU: 1 PID: 9831 Comm: syz-executor043 Not tainted 5.6.0-rc5-syzkaller #0 [ 96.192357][ T9831] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 96.202611][ T9831] Call Trace: [ 96.205960][ T9831] dump_stack+0x188/0x20d [ 96.210309][ T9831] ? debug_print_object+0xc0/0x250 [ 96.215423][ T9831] panic+0x2e3/0x75c [ 96.219324][ T9831] ? add_taint.cold+0x16/0x16 [ 96.224010][ T9831] ? __probe_kernel_read+0x188/0x1d0 [ 96.229293][ T9831] ? __warn.cold+0x14/0x35 [ 96.233712][ T9831] ? __warn+0xd5/0x1c8 [ 96.237770][ T9831] ? debug_print_object+0x160/0x250 [ 96.242980][ T9831] __warn.cold+0x2f/0x35 [ 96.247222][ T9831] ? debug_print_object+0x160/0x250 [ 96.252406][ T9831] report_bug+0x27b/0x2f0 [ 96.256733][ T9831] do_error_trap+0x12b/0x220 [ 96.261318][ T9831] ? debug_print_object+0x160/0x250 [ 96.266504][ T9831] do_invalid_op+0x32/0x40 [ 96.270922][ T9831] ? debug_print_object+0x160/0x250 [ 96.276113][ T9831] invalid_op+0x23/0x30 [ 96.280252][ T9831] RIP: 0010:debug_print_object+0x160/0x250 [ 96.286052][ T9831] 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 78 d9 b1 fd <0f> 0b 83 05 0b b7 d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 96.305973][ T9831] RSP: 0018:ffffc90002137178 EFLAGS: 00010282 [ 96.312305][ T9831] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 96.320279][ T9831] RDX: 0000000000000000 RSI: ffffffff815bf4f1 RDI: fffff52000426e21 [ 96.328409][ T9831] RBP: 0000000000000001 R08: ffff888098cbc100 R09: ffffed1015ce6659 [ 96.336373][ T9831] R10: ffffed1015ce6658 R11: ffff8880ae7332c7 R12: ffffffff897acba0 [ 96.344644][ T9831] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000426e3c [ 96.352679][ T9831] ? vprintk_func+0x81/0x17e [ 96.357293][ T9831] ? debug_print_object+0x160/0x250 [ 96.362492][ T9831] ? lockdep_hardirqs_on+0x417/0x5d0 [ 96.367784][ T9831] debug_object_activate+0x346/0x470 [ 96.373247][ T9831] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 96.379256][ T9831] ? debug_object_init_on_stack+0x20/0x20 [ 96.384990][ T9831] ? find_held_lock+0x2d/0x110 [ 96.389762][ T9831] ? free_object+0x70/0x70 [ 96.394266][ T9831] ? lock_downgrade+0x7f0/0x7f0 [ 96.399106][ T9831] ? delayed_work_timer_fn+0x90/0x90 [ 96.404405][ T9831] call_rcu+0x2c/0x690 [ 96.408481][ T9831] queue_rcu_work+0x82/0xa0 [ 96.412989][ T9831] route4_change+0x19e8/0x2250 [ 96.417753][ T9831] ? route4_destroy+0x800/0x800 [ 96.422600][ T9831] ? wait_for_completion+0x3c0/0x3c0 [ 96.427872][ T9831] tc_new_tfilter+0xa59/0x20b0 [ 96.432638][ T9831] ? route4_destroy+0x800/0x800 [ 96.437589][ T9831] ? tc_del_tfilter+0x1430/0x1430 [ 96.442629][ T9831] ? __lock_acquire+0x80b/0x3ca0 [ 96.448409][ T9831] ? apparmor_capable+0x454/0x8a0 [ 96.453449][ T9831] ? rcu_read_lock_held+0x9c/0xb0 [ 96.458596][ T9831] ? tc_del_tfilter+0x1430/0x1430 [ 96.463627][ T9831] rtnetlink_rcv_msg+0x810/0xad0 [ 96.468913][ T9831] ? rtnl_bridge_getlink+0x880/0x880 [ 96.474215][ T9831] ? mark_held_locks+0xe0/0xe0 [ 96.479028][ T9831] ? netlink_deliver_tap+0x146/0xb50 [ 96.484434][ T9831] netlink_rcv_skb+0x15a/0x410 [ 96.489309][ T9831] ? rtnl_bridge_getlink+0x880/0x880 [ 96.494590][ T9831] ? netlink_ack+0xa80/0xa80 [ 96.499209][ T9831] netlink_unicast+0x537/0x740 [ 96.503964][ T9831] ? netlink_attachskb+0x810/0x810 [ 96.509059][ T9831] ? _copy_from_iter_full+0x25c/0x870 [ 96.514519][ T9831] ? __phys_addr_symbol+0x2c/0x70 [ 96.519527][ T9831] ? __check_object_size+0x171/0x437 [ 96.524796][ T9831] netlink_sendmsg+0x882/0xe10 [ 96.529547][ T9831] ? aa_af_perm+0x260/0x260 [ 96.534051][ T9831] ? netlink_unicast+0x740/0x740 [ 96.538975][ T9831] ? netlink_unicast+0x740/0x740 [ 96.543892][ T9831] sock_sendmsg+0xcf/0x120 [ 96.548289][ T9831] ____sys_sendmsg+0x6b9/0x7d0 [ 96.553119][ T9831] ? kernel_sendmsg+0x50/0x50 [ 96.557786][ T9831] ___sys_sendmsg+0x100/0x170 [ 96.562445][ T9831] ? sendmsg_copy_msghdr+0x70/0x70 [ 96.567554][ T9831] ? __fget_files+0x329/0x4f0 [ 96.572217][ T9831] ? ksys_dup3+0x3c0/0x3c0 [ 96.576621][ T9831] ? __fget_light+0x208/0x270 [ 96.581298][ T9831] __sys_sendmsg+0xec/0x1b0 [ 96.585781][ T9831] ? __sys_sendmsg_sock+0xb0/0xb0 [ 96.590786][ T9831] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 96.597868][ T9831] ? __x64_sys_futex+0x380/0x4f0 [ 96.602820][ T9831] ? trace_hardirqs_off_caller+0x55/0x230 [ 96.609091][ T9831] ? do_syscall_64+0x21/0x7d0 [ 96.613759][ T9831] do_syscall_64+0xf6/0x7d0 [ 96.618273][ T9831] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 96.624150][ T9831] RIP: 0033:0x446709 [ 96.628155][ T9831] Code: e8 1c ba 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 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 96.647922][ T9831] RSP: 002b:00007ff3a3e0dd98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 96.656332][ T9831] RAX: ffffffffffffffda RBX: 00000000006dbc68 RCX: 0000000000446709 [ 96.664309][ T9831] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 96.672326][ T9831] RBP: 00000000006dbc60 R08: 0000000000000000 R09: 0000000000000000 [ 96.680291][ T9831] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc6c [ 96.688260][ T9831] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 96.698213][ T9831] Kernel Offset: disabled [ 96.702793][ T9831] Rebooting in 86400 seconds..