[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 73.037219][ T28] audit: type=1800 audit(1583391379.990:25): pid=9619 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 73.068651][ T28] audit: type=1800 audit(1583391379.990:26): pid=9619 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 73.112601][ T28] audit: type=1800 audit(1583391379.990:27): pid=9619 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 '10.128.0.249' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 83.326751][ T9773] IPVS: ftp: loaded support on port[0] = 21 [ 83.367173][ T9774] ------------[ cut here ]------------ [ 83.372805][ T9774] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 83.382300][ T9774] WARNING: CPU: 1 PID: 9774 at lib/debugobjects.c:485 debug_print_object+0x168/0x250 [ 83.391776][ T9774] Kernel panic - not syncing: panic_on_warn set ... [ 83.398356][ T9774] CPU: 1 PID: 9774 Comm: syz-executor634 Not tainted 5.6.0-rc2-syzkaller #0 [ 83.407020][ T9774] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.417061][ T9774] Call Trace: [ 83.420342][ T9774] dump_stack+0x197/0x210 [ 83.424704][ T9774] ? debug_print_object+0x160/0x250 [ 83.429887][ T9774] panic+0x2e3/0x75c [ 83.433805][ T9774] ? add_taint.cold+0x16/0x16 [ 83.438471][ T9774] ? __kasan_check_write+0x14/0x20 [ 83.443576][ T9774] ? __warn.cold+0x14/0x3e [ 83.447978][ T9774] ? __warn+0xd9/0x1cf [ 83.452031][ T9774] ? debug_print_object+0x168/0x250 [ 83.457311][ T9774] __warn.cold+0x2f/0x3e [ 83.461593][ T9774] ? debug_print_object+0x168/0x250 [ 83.466783][ T9774] report_bug+0x289/0x300 [ 83.471105][ T9774] do_error_trap+0x11b/0x200 [ 83.475680][ T9774] do_invalid_op+0x37/0x50 [ 83.480076][ T9774] ? debug_print_object+0x168/0x250 [ 83.485262][ T9774] invalid_op+0x23/0x30 [ 83.489416][ T9774] RIP: 0010:debug_print_object+0x168/0x250 [ 83.495201][ T9774] Code: dd 00 e2 91 88 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b5 00 00 00 48 8b 14 dd 00 e2 91 88 48 c7 c7 60 d7 91 88 e8 e7 ab 9f fd <0f> 0b 83 05 23 b5 ff 06 01 48 83 c4 20 5b 41 5c 41 5d 41 5e 5d c3 [ 83.514782][ T9774] RSP: 0018:ffffc900066170b0 EFLAGS: 00010286 [ 83.520836][ T9774] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 83.528784][ T9774] RDX: 0000000000000000 RSI: ffffffff815eae46 RDI: fffff52000cc2e08 [ 83.536787][ T9774] RBP: ffffc900066170f0 R08: ffff8880923de080 R09: ffffed1015d26659 [ 83.544747][ T9774] R10: ffffed1015d26658 R11: ffff8880ae9332c7 R12: 0000000000000001 [ 83.552709][ T9774] R13: ffffffff89bac120 R14: 0000000000000000 R15: 1ffff92000cc2e24 [ 83.560723][ T9774] ? vprintk_func+0x86/0x189 [ 83.565366][ T9774] debug_object_activate+0x346/0x470 [ 83.570680][ T9774] ? _raw_spin_unlock_irqrestore+0x9f/0xe0 [ 83.576469][ T9774] ? debug_object_init_on_stack+0x20/0x20 [ 83.582171][ T9774] ? mark_lock+0xc2/0x1220 [ 83.586566][ T9774] ? find_held_lock+0x35/0x130 [ 83.591323][ T9774] ? delayed_work_timer_fn+0x90/0x90 [ 83.596635][ T9774] call_rcu+0x2f/0x700 [ 83.600687][ T9774] ? trace_hardirqs_on+0x67/0x240 [ 83.605694][ T9774] queue_rcu_work+0x8a/0xa0 [ 83.610218][ T9774] ? __route4_delete_filter+0xe0/0xe0 [ 83.615569][ T9774] tcf_queue_work+0xd3/0x110 [ 83.620137][ T9774] route4_change+0x19e8/0x2250 [ 83.624887][ T9774] ? route4_destroy+0x850/0x850 [ 83.629726][ T9774] ? __kasan_check_write+0x14/0x20 [ 83.634821][ T9774] ? wait_for_completion+0x440/0x440 [ 83.640086][ T9774] ? route4_destroy+0x850/0x850 [ 83.644916][ T9774] tc_new_tfilter+0xb82/0x2480 [ 83.649686][ T9774] ? tc_del_tfilter+0x1560/0x1560 [ 83.654700][ T9774] ? __kasan_check_read+0x11/0x20 [ 83.659704][ T9774] ? __lock_acquire+0x8a0/0x4a00 [ 83.664630][ T9774] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.670865][ T9774] ? rtnetlink_rcv_msg+0x7e3/0xaf0 [ 83.675956][ T9774] ? find_held_lock+0x35/0x130 [ 83.680708][ T9774] ? rcu_read_lock_held_common+0x130/0x130 [ 83.686493][ T9774] ? tc_del_tfilter+0x1560/0x1560 [ 83.691508][ T9774] ? __kasan_check_read+0x11/0x20 [ 83.696533][ T9774] ? tc_del_tfilter+0x1560/0x1560 [ 83.701560][ T9774] rtnetlink_rcv_msg+0x824/0xaf0 [ 83.706497][ T9774] ? rtnl_bridge_getlink+0x910/0x910 [ 83.711763][ T9774] ? lock_downgrade+0x920/0x920 [ 83.716603][ T9774] ? netlink_deliver_tap+0x226/0xbf0 [ 83.721870][ T9774] ? find_held_lock+0x35/0x130 [ 83.726635][ T9774] netlink_rcv_skb+0x177/0x450 [ 83.731391][ T9774] ? rtnl_bridge_getlink+0x910/0x910 [ 83.736654][ T9774] ? netlink_ack+0xb50/0xb50 [ 83.741221][ T9774] ? __kasan_check_read+0x11/0x20 [ 83.746236][ T9774] ? netlink_deliver_tap+0x248/0xbf0 [ 83.751517][ T9774] rtnetlink_rcv+0x1d/0x30 [ 83.755931][ T9774] netlink_unicast+0x59e/0x7e0 [ 83.760689][ T9774] ? netlink_attachskb+0x870/0x870 [ 83.766215][ T9774] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 83.771924][ T9774] ? __check_object_size+0x3d/0x437 [ 83.777104][ T9774] netlink_sendmsg+0x91c/0xea0 [ 83.781865][ T9774] ? netlink_unicast+0x7e0/0x7e0 [ 83.786780][ T9774] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 83.792306][ T9774] ? apparmor_socket_sendmsg+0x2a/0x30 [ 83.797742][ T9774] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.803970][ T9774] ? security_socket_sendmsg+0x8d/0xc0 [ 83.809406][ T9774] ? netlink_unicast+0x7e0/0x7e0 [ 83.814322][ T9774] sock_sendmsg+0xd7/0x130 [ 83.818729][ T9774] ____sys_sendmsg+0x753/0x880 [ 83.823472][ T9774] ? kernel_sendmsg+0x50/0x50 [ 83.828139][ T9774] ? __fget_files+0x337/0x520 [ 83.832794][ T9774] ? find_held_lock+0x35/0x130 [ 83.837557][ T9774] ___sys_sendmsg+0x100/0x170 [ 83.842214][ T9774] ? sendmsg_copy_msghdr+0x70/0x70 [ 83.847302][ T9774] ? __kasan_check_read+0x11/0x20 [ 83.852324][ T9774] ? __fget_files+0x359/0x520 [ 83.857004][ T9774] ? ksys_dup3+0x3e0/0x3e0 [ 83.861466][ T9774] ? __fget_light+0x1ad/0x270 [ 83.866127][ T9774] ? __fdget+0x1b/0x20 [ 83.870179][ T9774] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 83.876406][ T9774] __sys_sendmsg+0x105/0x1d0 [ 83.880984][ T9774] ? __sys_sendmsg_sock+0xc0/0xc0 [ 83.885991][ T9774] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 83.892151][ T9774] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 83.897629][ T9774] ? do_syscall_64+0x26/0x790 [ 83.902287][ T9774] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.908348][ T9774] ? do_syscall_64+0x26/0x790 [ 83.913030][ T9774] __x64_sys_sendmsg+0x78/0xb0 [ 83.917790][ T9774] do_syscall_64+0xfa/0x790 [ 83.922290][ T9774] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.928161][ T9774] RIP: 0033:0x446fa9 [ 83.932075][ T9774] Code: e8 4c 14 03 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 9b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 83.951715][ T9774] RSP: 002b:00007f0fbfbb5d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 83.960123][ T9774] RAX: ffffffffffffffda RBX: 00000000006dcc68 RCX: 0000000000446fa9 [ 83.968079][ T9774] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 83.976046][ T9774] RBP: 00000000006dcc60 R08: 0000000000000000 R09: 0000000000000000 [ 83.984010][ T9774] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc6c [ 83.991975][ T9774] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 84.001482][ T9774] Kernel Offset: disabled [ 84.005871][ T9774] Rebooting in 86400 seconds..