[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 66.808338][ T25] audit: type=1800 audit(1583392521.701:25): pid=9570 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 66.828061][ T25] audit: type=1800 audit(1583392521.701:26): pid=9570 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 66.876774][ T25] audit: type=1800 audit(1583392521.701:27): pid=9570 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 '10.128.0.81' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 75.897811][ T9723] IPVS: ftp: loaded support on port[0] = 21 [ 75.930129][ T9724] ------------[ cut here ]------------ [ 75.935686][ T9724] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 75.944865][ T9724] WARNING: CPU: 0 PID: 9724 at lib/debugobjects.c:485 debug_print_object+0x168/0x250 [ 75.954319][ T9724] Kernel panic - not syncing: panic_on_warn set ... [ 75.960886][ T9724] CPU: 0 PID: 9724 Comm: syz-executor010 Not tainted 5.6.0-rc3-syzkaller #0 [ 75.969535][ T9724] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.979667][ T9724] Call Trace: [ 75.982944][ T9724] dump_stack+0x197/0x210 [ 75.987259][ T9724] ? debug_print_object+0x80/0x250 [ 75.992361][ T9724] panic+0x2e3/0x75c [ 75.996249][ T9724] ? add_taint.cold+0x16/0x16 [ 76.000926][ T9724] ? __kasan_check_write+0x14/0x20 [ 76.006031][ T9724] ? __warn.cold+0x14/0x3e [ 76.010435][ T9724] ? __warn+0xd9/0x1cf [ 76.014490][ T9724] ? debug_print_object+0x168/0x250 [ 76.019681][ T9724] __warn.cold+0x2f/0x3e [ 76.023908][ T9724] ? debug_print_object+0x168/0x250 [ 76.029092][ T9724] report_bug+0x289/0x300 [ 76.033451][ T9724] do_error_trap+0x11b/0x200 [ 76.038067][ T9724] do_invalid_op+0x37/0x50 [ 76.042521][ T9724] ? debug_print_object+0x168/0x250 [ 76.047702][ T9724] invalid_op+0x23/0x30 [ 76.051833][ T9724] RIP: 0010:debug_print_object+0x168/0x250 [ 76.057657][ T9724] 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 [ 76.077239][ T9724] RSP: 0018:ffffc900063df0a0 EFLAGS: 00010282 [ 76.083396][ T9724] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 76.091370][ T9724] RDX: 0000000000000000 RSI: ffffffff815ebe46 RDI: fffff52000c7be06 [ 76.099363][ T9724] RBP: ffffc900063df0e0 R08: ffff88809c4083c0 R09: ffffed1015d06659 [ 76.107330][ T9724] R10: ffffed1015d06658 R11: ffff8880ae8332c7 R12: 0000000000000001 [ 76.115280][ T9724] R13: ffffffff89bac220 R14: 0000000000000000 R15: 1ffff92000c7be22 [ 76.123244][ T9724] ? vprintk_func+0x86/0x189 [ 76.127821][ T9724] debug_object_activate+0x346/0x470 [ 76.133093][ T9724] ? _raw_spin_unlock_irqrestore+0x9f/0xe0 [ 76.138877][ T9724] ? debug_object_init_on_stack+0x20/0x20 [ 76.144594][ T9724] ? mark_lock+0xc2/0x1220 [ 76.149000][ T9724] ? find_held_lock+0x35/0x130 [ 76.153803][ T9724] ? delayed_work_timer_fn+0x90/0x90 [ 76.159092][ T9724] call_rcu+0x2f/0x700 [ 76.163150][ T9724] ? trace_hardirqs_on+0x67/0x240 [ 76.168159][ T9724] queue_rcu_work+0x8a/0xa0 [ 76.172647][ T9724] ? __route4_delete_filter+0xe0/0xe0 [ 76.177998][ T9724] tcf_queue_work+0xd3/0x110 [ 76.182567][ T9724] route4_change+0x19e8/0x2250 [ 76.187369][ T9724] ? route4_destroy+0x850/0x850 [ 76.192203][ T9724] ? __kasan_check_write+0x14/0x20 [ 76.197342][ T9724] ? wait_for_completion+0x440/0x440 [ 76.202609][ T9724] ? route4_destroy+0x850/0x850 [ 76.207483][ T9724] tc_new_tfilter+0xb82/0x2480 [ 76.212241][ T9724] ? tc_del_tfilter+0x1560/0x1560 [ 76.217286][ T9724] ? __kasan_check_read+0x11/0x20 [ 76.222288][ T9724] ? __lock_acquire+0x8a0/0x4a00 [ 76.227205][ T9724] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.233483][ T9724] ? rtnetlink_rcv_msg+0x7e3/0xaf0 [ 76.238571][ T9724] ? find_held_lock+0x35/0x130 [ 76.243326][ T9724] ? rcu_read_lock_held_common+0x130/0x130 [ 76.249127][ T9724] ? tc_del_tfilter+0x1560/0x1560 [ 76.254143][ T9724] ? __kasan_check_read+0x11/0x20 [ 76.259147][ T9724] ? tc_del_tfilter+0x1560/0x1560 [ 76.264152][ T9724] rtnetlink_rcv_msg+0x824/0xaf0 [ 76.269110][ T9724] ? rtnl_bridge_getlink+0x910/0x910 [ 76.274390][ T9724] ? lock_downgrade+0x920/0x920 [ 76.279233][ T9724] ? netlink_deliver_tap+0x226/0xbf0 [ 76.284523][ T9724] ? find_held_lock+0x35/0x130 [ 76.289344][ T9724] netlink_rcv_skb+0x177/0x450 [ 76.294145][ T9724] ? rtnl_bridge_getlink+0x910/0x910 [ 76.299433][ T9724] ? netlink_ack+0xb50/0xb50 [ 76.304055][ T9724] ? __kasan_check_read+0x11/0x20 [ 76.309100][ T9724] ? netlink_deliver_tap+0x248/0xbf0 [ 76.314368][ T9724] rtnetlink_rcv+0x1d/0x30 [ 76.318763][ T9724] netlink_unicast+0x59e/0x7e0 [ 76.323514][ T9724] ? netlink_attachskb+0x870/0x870 [ 76.328616][ T9724] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 76.334313][ T9724] ? __check_object_size+0x3d/0x437 [ 76.339492][ T9724] netlink_sendmsg+0x91c/0xea0 [ 76.344242][ T9724] ? netlink_unicast+0x7e0/0x7e0 [ 76.349156][ T9724] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 76.354681][ T9724] ? apparmor_socket_sendmsg+0x2a/0x30 [ 76.360157][ T9724] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 76.366376][ T9724] ? security_socket_sendmsg+0x8d/0xc0 [ 76.371825][ T9724] ? netlink_unicast+0x7e0/0x7e0 [ 76.376744][ T9724] sock_sendmsg+0xd7/0x130 [ 76.381140][ T9724] ____sys_sendmsg+0x753/0x880 [ 76.385887][ T9724] ? kernel_sendmsg+0x50/0x50 [ 76.390544][ T9724] ? find_held_lock+0x35/0x130 [ 76.395395][ T9724] ___sys_sendmsg+0x100/0x170 [ 76.400051][ T9724] ? sendmsg_copy_msghdr+0x70/0x70 [ 76.405137][ T9724] ? __kasan_check_read+0x11/0x20 [ 76.410153][ T9724] ? __fget_files+0x359/0x520 [ 76.414825][ T9724] ? ksys_dup3+0x3e0/0x3e0 [ 76.419228][ T9724] ? __fget_light+0x1ad/0x270 [ 76.424343][ T9724] ? __fdget+0x1b/0x20 [ 76.428389][ T9724] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 76.434630][ T9724] __sys_sendmsg+0x105/0x1d0 [ 76.439205][ T9724] ? __sys_sendmsg_sock+0xc0/0xc0 [ 76.444226][ T9724] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 76.450200][ T9724] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 76.455641][ T9724] ? do_fast_syscall_32+0xd1/0xe16 [ 76.460732][ T9724] ? entry_SYSENTER_compat+0x70/0x7f [ 76.466039][ T9724] ? do_fast_syscall_32+0xd1/0xe16 [ 76.471137][ T9724] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 76.476578][ T9724] do_fast_syscall_32+0x27b/0xe16 [ 76.481737][ T9724] entry_SYSENTER_compat+0x70/0x7f [ 76.486823][ T9724] RIP: 0023:0xf7fe8e39 [ 76.490870][ T9724] Code: 1d 00 00 00 89 d3 5b 5e 5d c3 8b 04 24 c3 8b 1c 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 76.510449][ T9724] RSP: 002b:00000000f7fe31ec EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 76.518984][ T9724] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000280 [ 76.526947][ T9724] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 76.534906][ T9724] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 76.542859][ T9724] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 76.550984][ T9724] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 76.560311][ T9724] Kernel Offset: disabled [ 76.564696][ T9724] Rebooting in 86400 seconds..