[ 47.672755][ T27] audit: type=1800 audit(1583512516.082:25): pid=8391 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 47.704779][ T27] audit: type=1800 audit(1583512516.092:26): pid=8391 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 47.737878][ T27] audit: type=1800 audit(1583512516.092:27): pid=8391 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 47.759393][ T27] audit: type=1800 audit(1583512516.092:28): pid=8391 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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 '10.128.1.46' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 69.206506][ T8542] IPVS: ftp: loaded support on port[0] = 21 [ 69.233825][ T8543] ------------[ cut here ]------------ [ 69.239379][ T8543] ODEBUG: activate active (active state 1) object type: rcu_head hint: 0x0 [ 69.248374][ T8543] WARNING: CPU: 0 PID: 8543 at lib/debugobjects.c:488 debug_object_activate+0x5a8/0x6f0 [ 69.258075][ T8543] Kernel panic - not syncing: panic_on_warn set ... [ 69.264637][ T8543] CPU: 0 PID: 8543 Comm: syz-executor223 Not tainted 5.6.0-rc3-syzkaller #0 [ 69.273279][ T8543] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.283310][ T8543] Call Trace: [ 69.286579][ T8543] dump_stack+0x1fb/0x318 [ 69.290897][ T8543] panic+0x264/0x7a9 [ 69.294769][ T8543] ? __warn+0x105/0x210 [ 69.298919][ T8543] ? debug_object_activate+0x5a8/0x6f0 [ 69.304368][ T8543] __warn+0x209/0x210 [ 69.308326][ T8543] ? debug_object_activate+0x5a8/0x6f0 [ 69.313764][ T8543] report_bug+0x1b6/0x2f0 [ 69.318069][ T8543] ? debug_object_activate+0x5a8/0x6f0 [ 69.323503][ T8543] do_error_trap+0xcf/0x1c0 [ 69.328023][ T8543] do_invalid_op+0x36/0x40 [ 69.332412][ T8543] ? debug_object_activate+0x5a8/0x6f0 [ 69.337847][ T8543] invalid_op+0x23/0x30 [ 69.341978][ T8543] RIP: 0010:debug_object_activate+0x5a8/0x6f0 [ 69.348020][ T8543] Code: 74 08 4c 89 f7 e8 d8 43 0f fe 4d 8b 06 48 c7 c7 13 ec f0 88 48 c7 c6 04 4f 06 89 4c 89 ea 89 d9 4d 89 e1 31 c0 e8 08 e0 a3 fd <0f> 0b 48 ba 00 00 00 00 00 fc ff df ff 05 da eb c4 05 48 8b 5d b8 [ 69.367597][ T8543] RSP: 0018:ffffc900022973a8 EFLAGS: 00010246 [ 69.373632][ T8543] RAX: 7b8aa96f8874b600 RBX: 0000000000000001 RCX: ffff8880a9278600 [ 69.381575][ T8543] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 69.389519][ T8543] RBP: ffffc900022973f0 R08: ffffffff81601324 R09: fffffbfff1406518 [ 69.397513][ T8543] R10: fffffbfff1406518 R11: 0000000000000000 R12: 0000000000000000 [ 69.405460][ T8543] R13: ffffffff88f4c97a R14: ffffffff892d99a8 R15: ffff88809772bc98 [ 69.413422][ T8543] ? vprintk_emit+0x2d4/0x3a0 [ 69.418119][ T8543] ? debug_object_activate+0x5a8/0x6f0 [ 69.423551][ T8543] ? queue_rcu_work+0x90/0x90 [ 69.428205][ T8543] call_rcu+0x3a/0x660 [ 69.432255][ T8543] queue_rcu_work+0x79/0x90 [ 69.436735][ T8543] ? route4_dump+0x6d0/0x6d0 [ 69.441296][ T8543] tcf_queue_work+0xc9/0xe0 [ 69.445773][ T8543] route4_change+0x18e8/0x1d90 [ 69.450523][ T8543] tc_new_tfilter+0x1490/0x2f50 [ 69.455352][ T8543] ? route4_get+0x390/0x390 [ 69.459897][ T8543] ? tcf_tunnel_encap_put_tunnel+0x20/0x20 [ 69.465678][ T8543] rtnetlink_rcv_msg+0x8fb/0xd40 [ 69.470620][ T8543] ? rcu_lock_release+0x9/0x30 [ 69.475366][ T8543] netlink_rcv_skb+0x19e/0x3e0 [ 69.481059][ T8543] ? rtnetlink_bind+0x80/0x80 [ 69.485720][ T8543] rtnetlink_rcv+0x1c/0x20 [ 69.490105][ T8543] netlink_unicast+0x766/0x920 [ 69.494849][ T8543] netlink_sendmsg+0xa2b/0xd40 [ 69.499597][ T8543] ? netlink_getsockopt+0x9f0/0x9f0 [ 69.504775][ T8543] ____sys_sendmsg+0x4f7/0x7f0 [ 69.509527][ T8543] __sys_sendmsg+0x1ed/0x290 [ 69.514098][ T8543] ? rcu_read_lock_sched_held+0x10b/0x170 [ 69.519793][ T8543] ? __kasan_check_write+0x14/0x20 [ 69.524875][ T8543] ? __fpregs_load_activate+0x194/0x220 [ 69.530394][ T8543] ? switch_fpu_return+0xe/0x10 [ 69.535230][ T8543] ? prepare_exit_to_usermode+0x221/0x5b0 [ 69.540940][ T8543] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 69.546671][ T8543] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 69.552106][ T8543] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 69.557811][ T8543] ? do_syscall_64+0x1d/0x1c0 [ 69.562467][ T8543] __x64_sys_sendmsg+0x7f/0x90 [ 69.567232][ T8543] do_syscall_64+0xf7/0x1c0 [ 69.571732][ T8543] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.577694][ T8543] RIP: 0033:0x446709 [ 69.581568][ T8543] 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 [ 69.601157][ T8543] RSP: 002b:00007fc661f7fd98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 69.609544][ T8543] RAX: ffffffffffffffda RBX: 00000000006dbc68 RCX: 0000000000446709 [ 69.617496][ T8543] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 69.625444][ T8543] RBP: 00000000006dbc60 R08: 0000000000000000 R09: 0000000000000000 [ 69.633387][ T8543] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc6c [ 69.641343][ T8543] R13: 0000000000000005 R14: 00a3a20740000000 R15: 0507002400000038 [ 69.650612][ T8543] Kernel Offset: disabled [ 69.654978][ T8543] Rebooting in 86400 seconds..