[ 81.603338][ T27] audit: type=1800 audit(1583405325.670:26): pid=9593 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. [ 82.477183][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 82.477194][ T27] audit: type=1800 audit(1583405326.570:29): pid=9593 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 [ 82.504023][ T27] audit: type=1800 audit(1583405326.570:30): pid=9593 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 '10.128.0.96' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 90.656244][ T9747] IPVS: ftp: loaded support on port[0] = 21 [ 90.687724][ T9748] ------------[ cut here ]------------ [ 90.693363][ T9748] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 90.702256][ T9748] WARNING: CPU: 0 PID: 9748 at lib/debugobjects.c:485 debug_print_object+0x168/0x250 [ 90.711717][ T9748] Kernel panic - not syncing: panic_on_warn set ... [ 90.718290][ T9748] CPU: 0 PID: 9748 Comm: syz-executor756 Not tainted 5.6.0-rc3-syzkaller #0 [ 90.726945][ T9748] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.736980][ T9748] Call Trace: [ 90.740271][ T9748] dump_stack+0x197/0x210 [ 90.744587][ T9748] ? debug_print_object+0x80/0x250 [ 90.749679][ T9748] panic+0x2e3/0x75c [ 90.753556][ T9748] ? add_taint.cold+0x16/0x16 [ 90.758222][ T9748] ? __kasan_check_write+0x14/0x20 [ 90.763325][ T9748] ? __warn.cold+0x14/0x3e [ 90.767734][ T9748] ? __warn+0xd9/0x1cf [ 90.771811][ T9748] ? debug_print_object+0x168/0x250 [ 90.777008][ T9748] __warn.cold+0x2f/0x3e [ 90.781267][ T9748] ? debug_print_object+0x168/0x250 [ 90.786465][ T9748] report_bug+0x289/0x300 [ 90.790782][ T9748] do_error_trap+0x11b/0x200 [ 90.795362][ T9748] do_invalid_op+0x37/0x50 [ 90.799772][ T9748] ? debug_print_object+0x168/0x250 [ 90.804970][ T9748] invalid_op+0x23/0x30 [ 90.809136][ T9748] RIP: 0010:debug_print_object+0x168/0x250 [ 90.814938][ T9748] 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 [ 90.834540][ T9748] RSP: 0018:ffffc900062bf0a0 EFLAGS: 00010282 [ 90.840590][ T9748] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 90.848547][ T9748] RDX: 0000000000000000 RSI: ffffffff815ebe46 RDI: fffff52000c57e06 [ 90.857461][ T9748] RBP: ffffc900062bf0e0 R08: ffff8880917b8380 R09: ffffed1015d045c9 [ 90.866199][ T9748] R10: ffffed1015d045c8 R11: ffff8880ae822e43 R12: 0000000000000001 [ 90.874154][ T9748] R13: ffffffff89bac220 R14: 0000000000000000 R15: 1ffff92000c57e22 [ 90.882149][ T9748] ? vprintk_func+0x86/0x189 [ 90.886739][ T9748] debug_object_activate+0x346/0x470 [ 90.892064][ T9748] ? _raw_spin_unlock_irqrestore+0x9f/0xe0 [ 90.897866][ T9748] ? debug_object_init_on_stack+0x20/0x20 [ 90.903586][ T9748] ? mark_lock+0xc2/0x1220 [ 90.907983][ T9748] ? find_held_lock+0x35/0x130 [ 90.913512][ T9748] ? delayed_work_timer_fn+0x90/0x90 [ 90.918788][ T9748] call_rcu+0x2f/0x700 [ 90.922908][ T9748] ? trace_hardirqs_on+0x67/0x240 [ 90.927979][ T9748] queue_rcu_work+0x8a/0xa0 [ 90.932472][ T9748] ? __route4_delete_filter+0xe0/0xe0 [ 90.937845][ T9748] tcf_queue_work+0xd3/0x110 [ 90.942422][ T9748] route4_change+0x19e8/0x2250 [ 90.947180][ T9748] ? route4_destroy+0x850/0x850 [ 90.953940][ T9748] ? __kasan_check_write+0x14/0x20 [ 90.959042][ T9748] ? wait_for_completion+0x440/0x440 [ 90.964315][ T9748] ? route4_destroy+0x850/0x850 [ 90.969160][ T9748] tc_new_tfilter+0xb82/0x2480 [ 90.973922][ T9748] ? tc_del_tfilter+0x1560/0x1560 [ 90.978942][ T9748] ? __kasan_check_read+0x11/0x20 [ 90.983967][ T9748] ? __lock_acquire+0x8a0/0x4a00 [ 90.988898][ T9748] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 90.995127][ T9748] ? rtnetlink_rcv_msg+0x7e3/0xaf0 [ 91.000218][ T9748] ? find_held_lock+0x35/0x130 [ 91.004989][ T9748] ? rcu_read_lock_held_common+0x130/0x130 [ 91.010795][ T9748] ? tc_del_tfilter+0x1560/0x1560 [ 91.015816][ T9748] ? __kasan_check_read+0x11/0x20 [ 91.020826][ T9748] ? tc_del_tfilter+0x1560/0x1560 [ 91.025844][ T9748] rtnetlink_rcv_msg+0x824/0xaf0 [ 91.030769][ T9748] ? rtnl_bridge_getlink+0x910/0x910 [ 91.036041][ T9748] ? lock_downgrade+0x920/0x920 [ 91.040930][ T9748] ? netlink_deliver_tap+0x226/0xbf0 [ 91.046195][ T9748] ? find_held_lock+0x35/0x130 [ 91.050958][ T9748] netlink_rcv_skb+0x177/0x450 [ 91.055786][ T9748] ? rtnl_bridge_getlink+0x910/0x910 [ 91.061070][ T9748] ? netlink_ack+0xb50/0xb50 [ 91.065656][ T9748] ? __kasan_check_read+0x11/0x20 [ 91.075085][ T9748] ? netlink_deliver_tap+0x248/0xbf0 [ 91.080377][ T9748] rtnetlink_rcv+0x1d/0x30 [ 91.084779][ T9748] netlink_unicast+0x59e/0x7e0 [ 91.089527][ T9748] ? netlink_attachskb+0x870/0x870 [ 91.094624][ T9748] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 91.100334][ T9748] ? __check_object_size+0x3d/0x437 [ 91.105518][ T9748] netlink_sendmsg+0x91c/0xea0 [ 91.110299][ T9748] ? netlink_unicast+0x7e0/0x7e0 [ 91.116334][ T9748] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 91.122012][ T9748] ? apparmor_socket_sendmsg+0x2a/0x30 [ 91.127482][ T9748] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.133709][ T9748] ? security_socket_sendmsg+0x8d/0xc0 [ 91.139183][ T9748] ? netlink_unicast+0x7e0/0x7e0 [ 91.144105][ T9748] sock_sendmsg+0xd7/0x130 [ 91.148514][ T9748] ____sys_sendmsg+0x753/0x880 [ 91.153298][ T9748] ? kernel_sendmsg+0x50/0x50 [ 91.157975][ T9748] ? find_held_lock+0x35/0x130 [ 91.162752][ T9748] ___sys_sendmsg+0x100/0x170 [ 91.167426][ T9748] ? sendmsg_copy_msghdr+0x70/0x70 [ 91.172520][ T9748] ? __kasan_check_read+0x11/0x20 [ 91.177567][ T9748] ? __fget_files+0x359/0x520 [ 91.182237][ T9748] ? ksys_dup3+0x3e0/0x3e0 [ 91.186654][ T9748] ? __fget_light+0x1ad/0x270 [ 91.191323][ T9748] ? __fdget+0x1b/0x20 [ 91.195376][ T9748] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 91.201604][ T9748] __sys_sendmsg+0x105/0x1d0 [ 91.206179][ T9748] ? __sys_sendmsg_sock+0xc0/0xc0 [ 91.211188][ T9748] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 91.217170][ T9748] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 91.223578][ T9748] ? do_fast_syscall_32+0xd1/0xe16 [ 91.228690][ T9748] ? entry_SYSENTER_compat+0x70/0x7f [ 91.234329][ T9748] ? do_fast_syscall_32+0xd1/0xe16 [ 91.239440][ T9748] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 91.245074][ T9748] do_fast_syscall_32+0x27b/0xe16 [ 91.250126][ T9748] entry_SYSENTER_compat+0x70/0x7f [ 91.255235][ T9748] RIP: 0023:0xf7f23e39 [ 91.259288][ T9748] 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 [ 91.278901][ T9748] RSP: 002b:00000000f7f1e1ec EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 91.288084][ T9748] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000280 [ 91.296053][ T9748] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 91.304053][ T9748] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 91.312032][ T9748] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 91.319994][ T9748] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 91.329122][ T9748] Kernel Offset: disabled [ 91.333519][ T9748] Rebooting in 86400 seconds..