[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 85.428936][ T27] audit: type=1800 audit(1583409565.377:25): pid=9483 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 85.449120][ T27] audit: type=1800 audit(1583409565.377:26): pid=9483 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 85.524355][ T27] audit: type=1800 audit(1583409565.377:27): pid=9483 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 '10.128.1.14' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 95.265050][ T9636] IPVS: ftp: loaded support on port[0] = 21 [ 95.301981][ T9638] ------------[ cut here ]------------ [ 95.307681][ T9638] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 95.316894][ T9638] WARNING: CPU: 1 PID: 9638 at lib/debugobjects.c:485 debug_print_object+0x168/0x250 [ 95.326434][ T9638] Kernel panic - not syncing: panic_on_warn set ... [ 95.333345][ T9638] CPU: 1 PID: 9638 Comm: syz-executor717 Not tainted 5.6.0-rc2-syzkaller #0 [ 95.342552][ T9638] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.352886][ T9638] Call Trace: [ 95.356204][ T9638] dump_stack+0x197/0x210 [ 95.360634][ T9638] ? debug_print_object+0x160/0x250 [ 95.365836][ T9638] panic+0x2e3/0x75c [ 95.369737][ T9638] ? add_taint.cold+0x16/0x16 [ 95.374428][ T9638] ? __kasan_check_write+0x14/0x20 [ 95.379556][ T9638] ? __warn.cold+0x14/0x3e [ 95.384073][ T9638] ? __warn+0xd9/0x1cf [ 95.388151][ T9638] ? debug_print_object+0x168/0x250 [ 95.393771][ T9638] __warn.cold+0x2f/0x3e [ 95.398012][ T9638] ? debug_print_object+0x168/0x250 [ 95.403256][ T9638] report_bug+0x289/0x300 [ 95.407585][ T9638] do_error_trap+0x11b/0x200 [ 95.412166][ T9638] do_invalid_op+0x37/0x50 [ 95.416580][ T9638] ? debug_print_object+0x168/0x250 [ 95.421788][ T9638] invalid_op+0x23/0x30 [ 95.425942][ T9638] RIP: 0010:debug_print_object+0x168/0x250 [ 95.439298][ T9638] Code: dd c0 e2 91 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd c0 e2 91 88 48 c7 c7 20 d8 91 88 e8 e7 a9 9f fd <0f> 0b 83 05 e3 c4 ff 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 [ 95.459167][ T9638] RSP: 0018:ffffc9000628f0b0 EFLAGS: 00010286 [ 95.465325][ T9638] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 95.473310][ T9638] RDX: 0000000000000000 RSI: ffffffff815eae46 RDI: fffff52000c51e08 [ 95.481305][ T9638] RBP: ffffc9000628f0f0 R08: ffff8880a645e180 R09: ffffed1015d26659 [ 95.489623][ T9638] R10: ffffed1015d26658 R11: ffff8880ae9332c7 R12: 0000000000000001 [ 95.498646][ T9638] R13: ffffffff89bac120 R14: 0000000000000000 R15: 1ffff92000c51e24 [ 95.506706][ T9638] ? vprintk_func+0x86/0x189 [ 95.511318][ T9638] debug_object_activate+0x346/0x470 [ 95.516608][ T9638] ? _raw_spin_unlock_irqrestore+0x9f/0xe0 [ 95.522536][ T9638] ? debug_object_init_on_stack+0x20/0x20 [ 95.528461][ T9638] ? mark_lock+0xc2/0x1220 [ 95.533034][ T9638] ? find_held_lock+0x35/0x130 [ 95.537877][ T9638] ? delayed_work_timer_fn+0x90/0x90 [ 95.543154][ T9638] call_rcu+0x2f/0x700 [ 95.547396][ T9638] ? trace_hardirqs_on+0x67/0x240 [ 95.552413][ T9638] queue_rcu_work+0x8a/0xa0 [ 95.556920][ T9638] ? __route4_delete_filter+0xe0/0xe0 [ 95.562290][ T9638] tcf_queue_work+0xd3/0x110 [ 95.566873][ T9638] route4_change+0x19e8/0x2250 [ 95.571655][ T9638] ? route4_destroy+0x850/0x850 [ 95.576613][ T9638] ? __kasan_check_write+0x14/0x20 [ 95.581809][ T9638] ? wait_for_completion+0x440/0x440 [ 95.587626][ T9638] ? route4_destroy+0x850/0x850 [ 95.593177][ T9638] tc_new_tfilter+0xb82/0x2480 [ 95.597971][ T9638] ? tc_del_tfilter+0x1560/0x1560 [ 95.603650][ T9638] ? __kasan_check_read+0x11/0x20 [ 95.608682][ T9638] ? __lock_acquire+0x8a0/0x4a00 [ 95.613608][ T9638] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.620638][ T9638] ? rtnetlink_rcv_msg+0x7e3/0xaf0 [ 95.626267][ T9638] ? find_held_lock+0x35/0x130 [ 95.631037][ T9638] ? rcu_read_lock_held_common+0x130/0x130 [ 95.636833][ T9638] ? tc_del_tfilter+0x1560/0x1560 [ 95.641948][ T9638] ? __kasan_check_read+0x11/0x20 [ 95.646966][ T9638] ? tc_del_tfilter+0x1560/0x1560 [ 95.651976][ T9638] rtnetlink_rcv_msg+0x824/0xaf0 [ 95.657429][ T9638] ? rtnl_bridge_getlink+0x910/0x910 [ 95.662702][ T9638] ? lock_downgrade+0x920/0x920 [ 95.667631][ T9638] ? netlink_deliver_tap+0x226/0xbf0 [ 95.672906][ T9638] ? find_held_lock+0x35/0x130 [ 95.677766][ T9638] netlink_rcv_skb+0x177/0x450 [ 95.682895][ T9638] ? rtnl_bridge_getlink+0x910/0x910 [ 95.688523][ T9638] ? netlink_ack+0xb50/0xb50 [ 95.693367][ T9638] ? __kasan_check_read+0x11/0x20 [ 95.698420][ T9638] ? netlink_deliver_tap+0x248/0xbf0 [ 95.703734][ T9638] rtnetlink_rcv+0x1d/0x30 [ 95.708158][ T9638] netlink_unicast+0x59e/0x7e0 [ 95.713117][ T9638] ? netlink_attachskb+0x870/0x870 [ 95.718284][ T9638] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 95.723998][ T9638] ? __check_object_size+0x3d/0x437 [ 95.729205][ T9638] netlink_sendmsg+0x91c/0xea0 [ 95.733963][ T9638] ? netlink_unicast+0x7e0/0x7e0 [ 95.738887][ T9638] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 95.744446][ T9638] ? apparmor_socket_sendmsg+0x2a/0x30 [ 95.749908][ T9638] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.756142][ T9638] ? security_socket_sendmsg+0x8d/0xc0 [ 95.761596][ T9638] ? netlink_unicast+0x7e0/0x7e0 [ 95.766523][ T9638] sock_sendmsg+0xd7/0x130 [ 95.771024][ T9638] ____sys_sendmsg+0x753/0x880 [ 95.775791][ T9638] ? kernel_sendmsg+0x50/0x50 [ 95.780457][ T9638] ? __fget_files+0x337/0x520 [ 95.785123][ T9638] ? find_held_lock+0x35/0x130 [ 95.789970][ T9638] ___sys_sendmsg+0x100/0x170 [ 95.794634][ T9638] ? sendmsg_copy_msghdr+0x70/0x70 [ 95.799748][ T9638] ? __kasan_check_read+0x11/0x20 [ 95.804811][ T9638] ? __fget_files+0x359/0x520 [ 95.809494][ T9638] ? ksys_dup3+0x3e0/0x3e0 [ 95.813909][ T9638] ? __fget_light+0x1ad/0x270 [ 95.818748][ T9638] ? __fdget+0x1b/0x20 [ 95.822822][ T9638] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 95.829089][ T9638] __sys_sendmsg+0x105/0x1d0 [ 95.833682][ T9638] ? __sys_sendmsg_sock+0xc0/0xc0 [ 95.838695][ T9638] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 95.845115][ T9638] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 95.850571][ T9638] ? do_syscall_64+0x26/0x790 [ 95.855253][ T9638] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.861324][ T9638] ? do_syscall_64+0x26/0x790 [ 95.866114][ T9638] __x64_sys_sendmsg+0x78/0xb0 [ 95.870879][ T9638] do_syscall_64+0xfa/0x790 [ 95.875505][ T9638] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.881416][ T9638] RIP: 0033:0x446ed9 [ 95.885300][ T9638] 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 [ 95.905006][ T9638] RSP: 002b:00007f585ddf3d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 95.913504][ T9638] RAX: ffffffffffffffda RBX: 00000000006dbc68 RCX: 0000000000446ed9 [ 95.921482][ T9638] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 95.929622][ T9638] RBP: 00000000006dbc60 R08: 0000000000000000 R09: 0000000000000000 [ 95.937578][ T9638] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc6c [ 95.945532][ T9638] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 95.954405][ T9638] Kernel Offset: disabled [ 95.958839][ T9638] Rebooting in 86400 seconds..