[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 73.966885][ T27] audit: type=1800 audit(1583396748.256:25): pid=9380 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 73.986644][ T27] audit: type=1800 audit(1583396748.266:26): pid=9380 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 74.105255][ T27] audit: type=1800 audit(1583396748.396:27): pid=9380 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 '10.128.0.162' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 85.164861][ T9532] IPVS: ftp: loaded support on port[0] = 21 [ 85.196068][ T9533] ------------[ cut here ]------------ [ 85.201643][ T9533] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 85.210808][ T9533] WARNING: CPU: 1 PID: 9533 at lib/debugobjects.c:485 debug_print_object+0x168/0x250 [ 85.220265][ T9533] Kernel panic - not syncing: panic_on_warn set ... [ 85.226843][ T9533] CPU: 1 PID: 9533 Comm: syz-executor634 Not tainted 5.6.0-rc3-syzkaller #0 [ 85.235577][ T9533] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.245615][ T9533] Call Trace: [ 85.248919][ T9533] dump_stack+0x197/0x210 [ 85.253235][ T9533] ? debug_print_object+0x80/0x250 [ 85.258368][ T9533] panic+0x2e3/0x75c [ 85.262243][ T9533] ? add_taint.cold+0x16/0x16 [ 85.266906][ T9533] ? __kasan_check_write+0x14/0x20 [ 85.272121][ T9533] ? __warn.cold+0x14/0x3e [ 85.276516][ T9533] ? __warn+0xd9/0x1cf [ 85.280565][ T9533] ? debug_print_object+0x168/0x250 [ 85.285740][ T9533] __warn.cold+0x2f/0x3e [ 85.289970][ T9533] ? debug_print_object+0x168/0x250 [ 85.295150][ T9533] report_bug+0x289/0x300 [ 85.299460][ T9533] do_error_trap+0x11b/0x200 [ 85.304036][ T9533] do_invalid_op+0x37/0x50 [ 85.308435][ T9533] ? debug_print_object+0x168/0x250 [ 85.313612][ T9533] invalid_op+0x23/0x30 [ 85.317747][ T9533] RIP: 0010:debug_print_object+0x168/0x250 [ 85.323529][ T9533] Code: dd 00 e7 91 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 00 e7 91 88 48 c7 c7 60 dc 91 88 e8 07 6e 9f fd <0f> 0b 83 05 03 6c ff 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 [ 85.343112][ T9533] RSP: 0018:ffffc90005c570b0 EFLAGS: 00010286 [ 85.349159][ T9533] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 85.357110][ T9533] RDX: 0000000000000000 RSI: ffffffff815ebe46 RDI: fffff52000b8ae08 [ 85.365083][ T9533] RBP: ffffc90005c570f0 R08: ffff8880a850a5c0 R09: ffffed1015d26659 [ 85.373042][ T9533] R10: ffffed1015d26658 R11: ffff8880ae9332c7 R12: 0000000000000001 [ 85.380998][ T9533] R13: ffffffff89bac220 R14: 0000000000000000 R15: 1ffff92000b8ae24 [ 85.388976][ T9533] ? vprintk_func+0x86/0x189 [ 85.393555][ T9533] debug_object_activate+0x346/0x470 [ 85.398872][ T9533] ? _raw_spin_unlock_irqrestore+0x9f/0xe0 [ 85.404699][ T9533] ? debug_object_init_on_stack+0x20/0x20 [ 85.410395][ T9533] ? mark_lock+0xc2/0x1220 [ 85.414787][ T9533] ? find_held_lock+0x35/0x130 [ 85.419577][ T9533] ? delayed_work_timer_fn+0x90/0x90 [ 85.424878][ T9533] call_rcu+0x2f/0x700 [ 85.428940][ T9533] ? trace_hardirqs_on+0x67/0x240 [ 85.433942][ T9533] queue_rcu_work+0x8a/0xa0 [ 85.438435][ T9533] ? __route4_delete_filter+0xe0/0xe0 [ 85.443800][ T9533] tcf_queue_work+0xd3/0x110 [ 85.448384][ T9533] route4_change+0x19e8/0x2250 [ 85.453251][ T9533] ? route4_destroy+0x850/0x850 [ 85.458088][ T9533] ? __kasan_check_write+0x14/0x20 [ 85.463185][ T9533] ? wait_for_completion+0x440/0x440 [ 85.468456][ T9533] ? route4_destroy+0x850/0x850 [ 85.473290][ T9533] tc_new_tfilter+0xb82/0x2480 [ 85.478112][ T9533] ? tc_del_tfilter+0x1560/0x1560 [ 85.483117][ T9533] ? __kasan_check_read+0x11/0x20 [ 85.488153][ T9533] ? __lock_acquire+0x8a0/0x4a00 [ 85.493095][ T9533] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.499321][ T9533] ? rtnetlink_rcv_msg+0x7e3/0xaf0 [ 85.505300][ T9533] ? find_held_lock+0x35/0x130 [ 85.510056][ T9533] ? rcu_read_lock_held_common+0x130/0x130 [ 85.515871][ T9533] ? tc_del_tfilter+0x1560/0x1560 [ 85.520924][ T9533] ? __kasan_check_read+0x11/0x20 [ 85.525930][ T9533] ? tc_del_tfilter+0x1560/0x1560 [ 85.530935][ T9533] rtnetlink_rcv_msg+0x824/0xaf0 [ 85.535865][ T9533] ? rtnl_bridge_getlink+0x910/0x910 [ 85.541197][ T9533] ? lock_downgrade+0x920/0x920 [ 85.546028][ T9533] ? netlink_deliver_tap+0x226/0xbf0 [ 85.551289][ T9533] ? find_held_lock+0x35/0x130 [ 85.556055][ T9533] netlink_rcv_skb+0x177/0x450 [ 85.560842][ T9533] ? rtnl_bridge_getlink+0x910/0x910 [ 85.566106][ T9533] ? netlink_ack+0xb50/0xb50 [ 85.570677][ T9533] ? __kasan_check_read+0x11/0x20 [ 85.575686][ T9533] ? netlink_deliver_tap+0x248/0xbf0 [ 85.580991][ T9533] rtnetlink_rcv+0x1d/0x30 [ 85.585386][ T9533] netlink_unicast+0x59e/0x7e0 [ 85.590134][ T9533] ? netlink_attachskb+0x870/0x870 [ 85.595256][ T9533] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 85.600992][ T9533] ? __check_object_size+0x3d/0x437 [ 85.606169][ T9533] netlink_sendmsg+0x91c/0xea0 [ 85.610931][ T9533] ? netlink_unicast+0x7e0/0x7e0 [ 85.615856][ T9533] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 85.621769][ T9533] ? apparmor_socket_sendmsg+0x2a/0x30 [ 85.627210][ T9533] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.633429][ T9533] ? security_socket_sendmsg+0x8d/0xc0 [ 85.638879][ T9533] ? netlink_unicast+0x7e0/0x7e0 [ 85.643795][ T9533] sock_sendmsg+0xd7/0x130 [ 85.648205][ T9533] ____sys_sendmsg+0x753/0x880 [ 85.652951][ T9533] ? kernel_sendmsg+0x50/0x50 [ 85.657617][ T9533] ? __fget_files+0x337/0x520 [ 85.662274][ T9533] ? find_held_lock+0x35/0x130 [ 85.667025][ T9533] ___sys_sendmsg+0x100/0x170 [ 85.671692][ T9533] ? sendmsg_copy_msghdr+0x70/0x70 [ 85.676780][ T9533] ? __kasan_check_read+0x11/0x20 [ 85.681790][ T9533] ? __fget_files+0x359/0x520 [ 85.686451][ T9533] ? ksys_dup3+0x3e0/0x3e0 [ 85.690956][ T9533] ? __fget_light+0x1ad/0x270 [ 85.695611][ T9533] ? __fdget+0x1b/0x20 [ 85.699656][ T9533] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 85.705879][ T9533] __sys_sendmsg+0x105/0x1d0 [ 85.710451][ T9533] ? __sys_sendmsg_sock+0xc0/0xc0 [ 85.715473][ T9533] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 85.721451][ T9533] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 85.726908][ T9533] ? do_syscall_64+0x26/0x790 [ 85.731580][ T9533] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.737626][ T9533] ? do_syscall_64+0x26/0x790 [ 85.742295][ T9533] __x64_sys_sendmsg+0x78/0xb0 [ 85.747038][ T9533] do_syscall_64+0xfa/0x790 [ 85.751522][ T9533] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.757387][ T9533] RIP: 0033:0x446709 [ 85.761275][ T9533] 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 [ 85.780865][ T9533] RSP: 002b:00007efd2c8c6d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 85.789268][ T9533] RAX: ffffffffffffffda RBX: 00000000006dbc68 RCX: 0000000000446709 [ 85.797231][ T9533] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 85.805236][ T9533] RBP: 00000000006dbc60 R08: 0000000000000000 R09: 0000000000000000 [ 85.813232][ T9533] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc6c [ 85.821181][ T9533] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 85.830774][ T9533] Kernel Offset: disabled [ 85.835189][ T9533] Rebooting in 86400 seconds..