[ 90.697020][ T27] audit: type=1800 audit(1583840244.085:26): pid=9565 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. [ 91.560717][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 91.560728][ T27] audit: type=1800 audit(1583840244.955:29): pid=9565 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 [ 91.587162][ T27] audit: type=1800 audit(1583840244.955:30): pid=9565 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 '10.128.0.121' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 103.094609][ T9723] IPVS: ftp: loaded support on port[0] = 21 [ 103.131135][ T9724] ------------[ cut here ]------------ [ 103.137427][ T9724] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 103.147027][ T9724] WARNING: CPU: 0 PID: 9724 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 103.156491][ T9724] Kernel panic - not syncing: panic_on_warn set ... [ 103.163426][ T9724] CPU: 0 PID: 9724 Comm: syz-executor615 Not tainted 5.6.0-rc5-syzkaller #0 [ 103.172337][ T9724] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 103.182478][ T9724] Call Trace: [ 103.185790][ T9724] dump_stack+0x188/0x20d [ 103.190116][ T9724] ? debug_print_object+0xc0/0x250 [ 103.195303][ T9724] panic+0x2e3/0x75c [ 103.199199][ T9724] ? add_taint.cold+0x16/0x16 [ 103.203873][ T9724] ? __probe_kernel_read+0x188/0x1d0 [ 103.209141][ T9724] ? __warn.cold+0x14/0x35 [ 103.213544][ T9724] ? __warn+0xd5/0x1c8 [ 103.217710][ T9724] ? debug_print_object+0x160/0x250 [ 103.222996][ T9724] __warn.cold+0x2f/0x35 [ 103.227232][ T9724] ? debug_print_object+0x160/0x250 [ 103.232437][ T9724] report_bug+0x27b/0x2f0 [ 103.236884][ T9724] do_error_trap+0x12b/0x220 [ 103.241535][ T9724] ? debug_print_object+0x160/0x250 [ 103.246736][ T9724] do_invalid_op+0x32/0x40 [ 103.251288][ T9724] ? debug_print_object+0x160/0x250 [ 103.256500][ T9724] invalid_op+0x23/0x30 [ 103.260664][ T9724] RIP: 0010:debug_print_object+0x160/0x250 [ 103.266586][ T9724] 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 8b b7 d3 06 01 48 83 c4 20 5b 5d 41 5c 41 5d c3 48 89 [ 103.286285][ T9724] RSP: 0018:ffffc90002067178 EFLAGS: 00010282 [ 103.292448][ T9724] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 103.300413][ T9724] RDX: 0000000000000000 RSI: ffffffff815bf4f1 RDI: fffff5200040ce21 [ 103.308391][ T9724] RBP: 0000000000000001 R08: ffff8880a4eb6480 R09: ffffed1015cc6659 [ 103.316367][ T9724] R10: ffffed1015cc6658 R11: ffff8880ae6332c7 R12: ffffffff897acba0 [ 103.324334][ T9724] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200040ce3c [ 103.332431][ T9724] ? vprintk_func+0x81/0x17e [ 103.337149][ T9724] ? debug_print_object+0x160/0x250 [ 103.342505][ T9724] ? lockdep_hardirqs_on+0x417/0x5d0 [ 103.347788][ T9724] debug_object_activate+0x346/0x470 [ 103.353173][ T9724] ? _raw_spin_unlock_irqrestore+0x9b/0xe0 [ 103.359064][ T9724] ? debug_object_init_on_stack+0x20/0x20 [ 103.364794][ T9724] ? find_held_lock+0x2d/0x110 [ 103.369572][ T9724] ? free_object+0x70/0x70 [ 103.373978][ T9724] ? lock_downgrade+0x7f0/0x7f0 [ 103.379416][ T9724] ? delayed_work_timer_fn+0x90/0x90 [ 103.384786][ T9724] call_rcu+0x2c/0x690 [ 103.388867][ T9724] queue_rcu_work+0x82/0xa0 [ 103.393430][ T9724] route4_change+0x19e8/0x2250 [ 103.398399][ T9724] ? route4_destroy+0x800/0x800 [ 103.403251][ T9724] ? wait_for_completion+0x3c0/0x3c0 [ 103.408548][ T9724] tc_new_tfilter+0xa59/0x20b0 [ 103.413317][ T9724] ? route4_destroy+0x800/0x800 [ 103.418163][ T9724] ? tc_del_tfilter+0x1430/0x1430 [ 103.423419][ T9724] ? __lock_acquire+0x80b/0x3ca0 [ 103.428389][ T9724] ? apparmor_capable+0x454/0x8a0 [ 103.433423][ T9724] ? rcu_read_lock_held+0x9c/0xb0 [ 103.438575][ T9724] ? tc_del_tfilter+0x1430/0x1430 [ 103.443601][ T9724] rtnetlink_rcv_msg+0x810/0xad0 [ 103.448538][ T9724] ? rtnl_bridge_getlink+0x880/0x880 [ 103.453942][ T9724] ? mark_held_locks+0xe0/0xe0 [ 103.458700][ T9724] ? netlink_deliver_tap+0x146/0xb50 [ 103.463997][ T9724] netlink_rcv_skb+0x15a/0x410 [ 103.468845][ T9724] ? rtnl_bridge_getlink+0x880/0x880 [ 103.474114][ T9724] ? netlink_ack+0xa80/0xa80 [ 103.479130][ T9724] netlink_unicast+0x537/0x740 [ 103.483881][ T9724] ? netlink_attachskb+0x810/0x810 [ 103.488987][ T9724] ? _copy_from_iter_full+0x25c/0x870 [ 103.494351][ T9724] ? __phys_addr_symbol+0x2c/0x70 [ 103.499379][ T9724] ? __check_object_size+0x171/0x437 [ 103.504769][ T9724] netlink_sendmsg+0x882/0xe10 [ 103.509812][ T9724] ? aa_af_perm+0x260/0x260 [ 103.514314][ T9724] ? netlink_unicast+0x740/0x740 [ 103.519275][ T9724] ? netlink_unicast+0x740/0x740 [ 103.524218][ T9724] sock_sendmsg+0xcf/0x120 [ 103.528623][ T9724] ____sys_sendmsg+0x6b9/0x7d0 [ 103.533381][ T9724] ? kernel_sendmsg+0x50/0x50 [ 103.538352][ T9724] ___sys_sendmsg+0x100/0x170 [ 103.543046][ T9724] ? sendmsg_copy_msghdr+0x70/0x70 [ 103.548309][ T9724] ? __fget_files+0x329/0x4f0 [ 103.552984][ T9724] ? ksys_dup3+0x3c0/0x3c0 [ 103.557396][ T9724] ? __fget_light+0x208/0x270 [ 103.562073][ T9724] __sys_sendmsg+0xec/0x1b0 [ 103.566595][ T9724] ? __sys_sendmsg_sock+0xb0/0xb0 [ 103.571608][ T9724] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 103.577717][ T9724] ? __x64_sys_futex+0x380/0x4f0 [ 103.582668][ T9724] ? trace_hardirqs_off_caller+0x55/0x230 [ 103.588382][ T9724] ? do_syscall_64+0x21/0x7d0 [ 103.593150][ T9724] do_syscall_64+0xf6/0x7d0 [ 103.597815][ T9724] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.603727][ T9724] RIP: 0033:0x446709 [ 103.607609][ T9724] 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 [ 103.627297][ T9724] RSP: 002b:00007f4bf8063d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 103.635707][ T9724] RAX: ffffffffffffffda RBX: 00000000006dbc68 RCX: 0000000000446709 [ 103.643688][ T9724] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 103.651858][ T9724] RBP: 00000000006dbc60 R08: 0000000000000000 R09: 0000000000000000 [ 103.659826][ T9724] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc6c [ 103.667792][ T9724] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 103.677505][ T9724] Kernel Offset: disabled [ 103.681907][ T9724] Rebooting in 86400 seconds..