[ 74.854860][ T27] audit: type=1800 audit(1583408295.172:24): pid=9728 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="sudo" dev="sda1" ino=2454 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 75.711757][ T27] audit: type=1800 audit(1583408296.092:25): pid=9728 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 75.751807][ T27] audit: type=1800 audit(1583408296.102:26): pid=9728 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.94' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 85.491447][ T9883] IPVS: ftp: loaded support on port[0] = 21 [ 85.525080][ T9884] ------------[ cut here ]------------ [ 85.530671][ T9884] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 85.539901][ T9884] WARNING: CPU: 0 PID: 9884 at lib/debugobjects.c:485 debug_print_object+0x168/0x250 [ 85.549450][ T9884] Kernel panic - not syncing: panic_on_warn set ... [ 85.556040][ T9884] CPU: 0 PID: 9884 Comm: syz-executor996 Not tainted 5.6.0-rc3-syzkaller #0 [ 85.564703][ T9884] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.574767][ T9884] Call Trace: [ 85.578066][ T9884] dump_stack+0x197/0x210 [ 85.582399][ T9884] ? debug_print_object+0x80/0x250 [ 85.587653][ T9884] panic+0x2e3/0x75c [ 85.591556][ T9884] ? add_taint.cold+0x16/0x16 [ 85.596340][ T9884] ? __kasan_check_write+0x14/0x20 [ 85.601438][ T9884] ? __warn.cold+0x14/0x3e [ 85.605857][ T9884] ? __warn+0xd9/0x1cf [ 85.609933][ T9884] ? debug_print_object+0x168/0x250 [ 85.615204][ T9884] __warn.cold+0x2f/0x3e [ 85.619451][ T9884] ? debug_print_object+0x168/0x250 [ 85.624657][ T9884] report_bug+0x289/0x300 [ 85.628998][ T9884] do_error_trap+0x11b/0x200 [ 85.633579][ T9884] do_invalid_op+0x37/0x50 [ 85.637997][ T9884] ? debug_print_object+0x168/0x250 [ 85.643207][ T9884] invalid_op+0x23/0x30 [ 85.647578][ T9884] RIP: 0010:debug_print_object+0x168/0x250 [ 85.653722][ T9884] 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 [ 85.673470][ T9884] RSP: 0018:ffffc9000627f0a0 EFLAGS: 00010282 [ 85.679638][ T9884] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 85.687608][ T9884] RDX: 0000000000000000 RSI: ffffffff815ebe46 RDI: fffff52000c4fe06 [ 85.695563][ T9884] RBP: ffffc9000627f0e0 R08: ffff88809565a180 R09: ffffed1015d06659 [ 85.703536][ T9884] R10: ffffed1015d06658 R11: ffff8880ae8332c7 R12: 0000000000000001 [ 85.711551][ T9884] R13: ffffffff89bac220 R14: 0000000000000000 R15: 1ffff92000c4fe22 [ 85.719567][ T9884] ? vprintk_func+0x86/0x189 [ 85.724163][ T9884] debug_object_activate+0x346/0x470 [ 85.729432][ T9884] ? _raw_spin_unlock_irqrestore+0x9f/0xe0 [ 85.735405][ T9884] ? debug_object_init_on_stack+0x20/0x20 [ 85.741138][ T9884] ? mark_lock+0xc2/0x1220 [ 85.745548][ T9884] ? find_held_lock+0x35/0x130 [ 85.750315][ T9884] ? delayed_work_timer_fn+0x90/0x90 [ 85.755776][ T9884] call_rcu+0x2f/0x700 [ 85.759835][ T9884] ? trace_hardirqs_on+0x67/0x240 [ 85.764857][ T9884] queue_rcu_work+0x8a/0xa0 [ 85.769345][ T9884] ? __route4_delete_filter+0xe0/0xe0 [ 85.774700][ T9884] tcf_queue_work+0xd3/0x110 [ 85.779271][ T9884] route4_change+0x19e8/0x2250 [ 85.784026][ T9884] ? route4_destroy+0x850/0x850 [ 85.788889][ T9884] ? __kasan_check_write+0x14/0x20 [ 85.794638][ T9884] ? wait_for_completion+0x440/0x440 [ 85.799922][ T9884] ? route4_destroy+0x850/0x850 [ 85.804767][ T9884] tc_new_tfilter+0xb82/0x2480 [ 85.809546][ T9884] ? tc_del_tfilter+0x1560/0x1560 [ 85.814555][ T9884] ? __kasan_check_read+0x11/0x20 [ 85.819649][ T9884] ? __lock_acquire+0x8a0/0x4a00 [ 85.824570][ T9884] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.830814][ T9884] ? rtnetlink_rcv_msg+0x7e3/0xaf0 [ 85.835920][ T9884] ? find_held_lock+0x35/0x130 [ 85.840690][ T9884] ? rcu_read_lock_held_common+0x130/0x130 [ 85.846489][ T9884] ? tc_del_tfilter+0x1560/0x1560 [ 85.851495][ T9884] ? __kasan_check_read+0x11/0x20 [ 85.856571][ T9884] ? tc_del_tfilter+0x1560/0x1560 [ 85.861605][ T9884] rtnetlink_rcv_msg+0x824/0xaf0 [ 85.866559][ T9884] ? rtnl_bridge_getlink+0x910/0x910 [ 85.871838][ T9884] ? lock_downgrade+0x920/0x920 [ 85.876685][ T9884] ? netlink_deliver_tap+0x226/0xbf0 [ 85.882095][ T9884] ? find_held_lock+0x35/0x130 [ 85.886878][ T9884] netlink_rcv_skb+0x177/0x450 [ 85.891671][ T9884] ? rtnl_bridge_getlink+0x910/0x910 [ 85.896979][ T9884] ? netlink_ack+0xb50/0xb50 [ 85.901559][ T9884] ? __kasan_check_read+0x11/0x20 [ 85.906585][ T9884] ? netlink_deliver_tap+0x248/0xbf0 [ 85.911886][ T9884] rtnetlink_rcv+0x1d/0x30 [ 85.916285][ T9884] netlink_unicast+0x59e/0x7e0 [ 85.921050][ T9884] ? netlink_attachskb+0x870/0x870 [ 85.927712][ T9884] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 85.933440][ T9884] ? __check_object_size+0x3d/0x437 [ 85.938630][ T9884] netlink_sendmsg+0x91c/0xea0 [ 85.943385][ T9884] ? netlink_unicast+0x7e0/0x7e0 [ 85.948328][ T9884] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 85.953863][ T9884] ? apparmor_socket_sendmsg+0x2a/0x30 [ 85.959333][ T9884] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.965555][ T9884] ? security_socket_sendmsg+0x8d/0xc0 [ 85.971018][ T9884] ? netlink_unicast+0x7e0/0x7e0 [ 85.975941][ T9884] sock_sendmsg+0xd7/0x130 [ 85.980340][ T9884] ____sys_sendmsg+0x753/0x880 [ 85.985105][ T9884] ? kernel_sendmsg+0x50/0x50 [ 85.989785][ T9884] ? find_held_lock+0x35/0x130 [ 85.994569][ T9884] ___sys_sendmsg+0x100/0x170 [ 85.999414][ T9884] ? sendmsg_copy_msghdr+0x70/0x70 [ 86.004521][ T9884] ? __kasan_check_read+0x11/0x20 [ 86.009541][ T9884] ? __fget_files+0x359/0x520 [ 86.014226][ T9884] ? ksys_dup3+0x3e0/0x3e0 [ 86.018658][ T9884] ? __fget_light+0x1ad/0x270 [ 86.023335][ T9884] ? __fdget+0x1b/0x20 [ 86.027469][ T9884] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 86.033731][ T9884] __sys_sendmsg+0x105/0x1d0 [ 86.038480][ T9884] ? __sys_sendmsg_sock+0xc0/0xc0 [ 86.043738][ T9884] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 86.049729][ T9884] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 86.055172][ T9884] ? do_fast_syscall_32+0xd1/0xe16 [ 86.060345][ T9884] ? entry_SYSENTER_compat+0x70/0x7f [ 86.065663][ T9884] ? do_fast_syscall_32+0xd1/0xe16 [ 86.070798][ T9884] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 86.076258][ T9884] do_fast_syscall_32+0x27b/0xe16 [ 86.081293][ T9884] entry_SYSENTER_compat+0x70/0x7f [ 86.087181][ T9884] RIP: 0023:0xf7f51e39 [ 86.091251][ T9884] 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 [ 86.111106][ T9884] RSP: 002b:00000000f7f4c1ec EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 86.119506][ T9884] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000280 [ 86.127462][ T9884] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 86.135416][ T9884] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 86.143367][ T9884] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 86.151332][ T9884] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 86.160817][ T9884] Kernel Offset: disabled [ 86.165226][ T9884] Rebooting in 86400 seconds..