[ 34.154102][ T27] audit: type=1800 audit(1550309264.037:27): pid=7350 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 34.154125][ T27] audit: type=1800 audit(1550309264.037:28): pid=7350 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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. [ 35.200915][ T27] audit: type=1800 audit(1550309265.117:29): pid=7350 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 [ 35.220937][ T27] audit: type=1800 audit(1550309265.117:30): pid=7350 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 '10.128.0.170' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 849.846821][ T1012] INFO: task syz-executor691:8135 blocked for more than 140 seconds. [ 849.855191][ T1012] Not tainted 5.0.0-rc6-next-20190215 #36 [ 849.862047][ T1012] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 849.870837][ T1012] syz-executor691 D27984 8135 7508 0x00000004 [ 849.877232][ T1012] Call Trace: [ 849.880523][ T1012] __schedule+0x817/0x1cc0 [ 849.884918][ T1012] ? __mutex_lock+0x721/0x1310 [ 849.889777][ T1012] ? __sched_text_start+0x8/0x8 [ 849.894616][ T1012] schedule+0x92/0x180 [ 849.898795][ T1012] schedule_preempt_disabled+0x13/0x20 [ 849.904241][ T1012] __mutex_lock+0x726/0x1310 [ 849.908981][ T1012] ? rtnetlink_rcv_msg+0x40a/0xb00 [ 849.914084][ T1012] ? mutex_trylock+0x1e0/0x1e0 [ 849.918939][ T1012] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 849.924106][ T1012] ? lock_downgrade+0x880/0x880 [ 849.929095][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 849.935335][ T1012] mutex_lock_nested+0x16/0x20 [ 849.940212][ T1012] ? mutex_lock_nested+0x16/0x20 [ 849.945132][ T1012] rtnetlink_rcv_msg+0x40a/0xb00 [ 849.950161][ T1012] ? rtnetlink_put_metrics+0x560/0x560 [ 849.955610][ T1012] ? netlink_deliver_tap+0x22d/0xbf0 [ 849.960999][ T1012] ? find_held_lock+0x35/0x130 [ 849.965752][ T1012] netlink_rcv_skb+0x17a/0x460 [ 849.970604][ T1012] ? rtnetlink_put_metrics+0x560/0x560 [ 849.976044][ T1012] ? netlink_ack+0xb50/0xb50 [ 849.980723][ T1012] ? kasan_check_read+0x11/0x20 [ 849.985554][ T1012] ? netlink_deliver_tap+0x254/0xbf0 [ 849.991322][ T1012] rtnetlink_rcv+0x1d/0x30 [ 849.995797][ T1012] netlink_unicast+0x536/0x720 [ 850.000711][ T1012] ? netlink_attachskb+0x770/0x770 [ 850.005827][ T1012] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 850.011658][ T1012] ? __check_object_size+0x3d/0x42f [ 850.017113][ T1012] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 850.022836][ T1012] netlink_sendmsg+0x8ae/0xd70 [ 850.027721][ T1012] ? netlink_unicast+0x720/0x720 [ 850.032642][ T1012] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 850.038322][ T1012] ? apparmor_socket_sendmsg+0x2a/0x30 [ 850.043843][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.050233][ T1012] ? security_socket_sendmsg+0x93/0xc0 [ 850.055679][ T1012] ? netlink_unicast+0x720/0x720 [ 850.060696][ T1012] sock_sendmsg+0xdd/0x130 [ 850.065107][ T1012] ___sys_sendmsg+0x806/0x930 [ 850.069870][ T1012] ? copy_msghdr_from_user+0x430/0x430 [ 850.075433][ T1012] ? __local_bh_enable_ip+0x15a/0x270 [ 850.080950][ T1012] ? lockdep_hardirqs_on+0x418/0x5d0 [ 850.086288][ T1012] ? release_sock+0x158/0x1c0 [ 850.091098][ T1012] ? trace_hardirqs_on+0x67/0x230 [ 850.096106][ T1012] ? release_sock+0x158/0x1c0 [ 850.100859][ T1012] ? __local_bh_enable_ip+0x15a/0x270 [ 850.106216][ T1012] ? _raw_spin_unlock_bh+0x31/0x40 [ 850.111415][ T1012] ? release_sock+0x158/0x1c0 [ 850.116080][ T1012] ? sock_setsockopt+0x197/0x1f70 [ 850.121618][ T1012] ? sock_enable_timestamp+0xe0/0xe0 [ 850.127173][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.133404][ T1012] ? __fget_light+0x1a9/0x230 [ 850.138199][ T1012] ? __fdget+0x1b/0x20 [ 850.142261][ T1012] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 850.148632][ T1012] __sys_sendmsg+0x105/0x1d0 [ 850.153364][ T1012] ? __ia32_sys_shutdown+0x80/0x80 [ 850.158684][ T1012] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 850.164136][ T1012] ? do_syscall_64+0x26/0x610 [ 850.168936][ T1012] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 850.174992][ T1012] ? do_syscall_64+0x26/0x610 [ 850.179845][ T1012] __x64_sys_sendmsg+0x78/0xb0 [ 850.184597][ T1012] do_syscall_64+0x103/0x610 [ 850.189433][ T1012] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 850.195327][ T1012] RIP: 0033:0x4459f9 [ 850.199332][ T1012] Code: ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 <7a> fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd [ 850.219121][ T1012] RSP: 002b:00007fffa59f16e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 850.227620][ T1012] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004459f9 [ 850.235572][ T1012] RDX: 00000000000000c4 RSI: 0000000020000300 RDI: 0000000000000003 [ 850.243646][ T1012] RBP: 00000000000a8d51 R08: 00000000004002c8 R09: 00000000004002c8 [ 850.252110][ T1012] R10: 00000000200015a6 R11: 0000000000000246 R12: 0000000000406890 [ 850.260162][ T1012] R13: 0000000000406920 R14: 0000000000000000 R15: 0000000000000000 [ 850.268226][ T1012] INFO: task syz-executor691:8136 blocked for more than 140 seconds. [ 850.276273][ T1012] Not tainted 5.0.0-rc6-next-20190215 #36 [ 850.282648][ T1012] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 850.291510][ T1012] syz-executor691 D28832 8136 7511 0x00000004 [ 850.297949][ T1012] Call Trace: [ 850.301229][ T1012] __schedule+0x817/0x1cc0 [ 850.305627][ T1012] ? __mutex_lock+0x721/0x1310 [ 850.310491][ T1012] ? __sched_text_start+0x8/0x8 [ 850.315327][ T1012] schedule+0x92/0x180 [ 850.319538][ T1012] schedule_preempt_disabled+0x13/0x20 [ 850.325064][ T1012] __mutex_lock+0x726/0x1310 [ 850.329812][ T1012] ? rtnetlink_rcv_msg+0x40a/0xb00 [ 850.334908][ T1012] ? mutex_trylock+0x1e0/0x1e0 [ 850.339767][ T1012] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 850.344873][ T1012] ? lock_downgrade+0x880/0x880 [ 850.349832][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.356233][ T1012] mutex_lock_nested+0x16/0x20 [ 850.361147][ T1012] ? mutex_lock_nested+0x16/0x20 [ 850.366085][ T1012] rtnetlink_rcv_msg+0x40a/0xb00 [ 850.371150][ T1012] ? rtnetlink_put_metrics+0x560/0x560 [ 850.377147][ T1012] ? netlink_deliver_tap+0x22d/0xbf0 [ 850.382419][ T1012] ? find_held_lock+0x35/0x130 [ 850.387282][ T1012] netlink_rcv_skb+0x17a/0x460 [ 850.392029][ T1012] ? rtnetlink_put_metrics+0x560/0x560 [ 850.397614][ T1012] ? netlink_ack+0xb50/0xb50 [ 850.402191][ T1012] ? kasan_check_read+0x11/0x20 [ 850.407116][ T1012] ? netlink_deliver_tap+0x254/0xbf0 [ 850.412383][ T1012] rtnetlink_rcv+0x1d/0x30 [ 850.416930][ T1012] netlink_unicast+0x536/0x720 [ 850.421737][ T1012] ? netlink_attachskb+0x770/0x770 [ 850.426962][ T1012] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 850.432672][ T1012] ? __check_object_size+0x3d/0x42f [ 850.437991][ T1012] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 850.443700][ T1012] netlink_sendmsg+0x8ae/0xd70 [ 850.448554][ T1012] ? netlink_unicast+0x720/0x720 [ 850.453492][ T1012] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 850.459264][ T1012] ? apparmor_socket_sendmsg+0x2a/0x30 [ 850.464738][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.471107][ T1012] ? security_socket_sendmsg+0x93/0xc0 [ 850.476557][ T1012] ? netlink_unicast+0x720/0x720 [ 850.481589][ T1012] sock_sendmsg+0xdd/0x130 [ 850.486059][ T1012] ___sys_sendmsg+0x806/0x930 [ 850.491262][ T1012] ? copy_msghdr_from_user+0x430/0x430 [ 850.496837][ T1012] ? __local_bh_enable_ip+0x15a/0x270 [ 850.502208][ T1012] ? lockdep_hardirqs_on+0x418/0x5d0 [ 850.508022][ T1012] ? release_sock+0x158/0x1c0 [ 850.512691][ T1012] ? trace_hardirqs_on+0x67/0x230 [ 850.517806][ T1012] ? release_sock+0x158/0x1c0 [ 850.522472][ T1012] ? __local_bh_enable_ip+0x15a/0x270 [ 850.527946][ T1012] ? _raw_spin_unlock_bh+0x31/0x40 [ 850.533040][ T1012] ? release_sock+0x158/0x1c0 [ 850.537813][ T1012] ? sock_setsockopt+0x197/0x1f70 [ 850.542819][ T1012] ? sock_enable_timestamp+0xe0/0xe0 [ 850.548401][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.554638][ T1012] ? __fget_light+0x1a9/0x230 [ 850.559459][ T1012] ? __fdget+0x1b/0x20 [ 850.563518][ T1012] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 850.570015][ T1012] __sys_sendmsg+0x105/0x1d0 [ 850.574600][ T1012] ? __ia32_sys_shutdown+0x80/0x80 [ 850.579846][ T1012] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 850.585291][ T1012] ? do_syscall_64+0x26/0x610 [ 850.590077][ T1012] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 850.596128][ T1012] ? do_syscall_64+0x26/0x610 [ 850.600924][ T1012] __x64_sys_sendmsg+0x78/0xb0 [ 850.605677][ T1012] do_syscall_64+0x103/0x610 [ 850.610347][ T1012] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 850.616227][ T1012] RIP: 0033:0x4459f9 [ 850.620203][ T1012] Code: ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 <7a> fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd [ 850.640358][ T1012] RSP: 002b:00007fffa59f16e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 850.648937][ T1012] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004459f9 [ 850.657042][ T1012] RDX: 00000000000000c4 RSI: 0000000020000300 RDI: 0000000000000003 [ 850.665336][ T1012] RBP: 00000000000a8d4a R08: 00000000004002c8 R09: 00000000004002c8 [ 850.673452][ T1012] R10: 00000000200015a6 R11: 0000000000000246 R12: 0000000000406890 [ 850.681492][ T1012] R13: 0000000000406920 R14: 0000000000000000 R15: 0000000000000000 [ 850.689560][ T1012] INFO: task syz-executor691:8137 blocked for more than 140 seconds. [ 850.697771][ T1012] Not tainted 5.0.0-rc6-next-20190215 #36 [ 850.703990][ T1012] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 850.712776][ T1012] syz-executor691 D28832 8137 7512 0x00000004 [ 850.719187][ T1012] Call Trace: [ 850.722463][ T1012] __schedule+0x817/0x1cc0 [ 850.726960][ T1012] ? __mutex_lock+0x721/0x1310 [ 850.731706][ T1012] ? __sched_text_start+0x8/0x8 [ 850.736536][ T1012] schedule+0x92/0x180 [ 850.740914][ T1012] schedule_preempt_disabled+0x13/0x20 [ 850.746389][ T1012] __mutex_lock+0x726/0x1310 [ 850.751125][ T1012] ? rtnetlink_rcv_msg+0x40a/0xb00 [ 850.756230][ T1012] ? mutex_trylock+0x1e0/0x1e0 [ 850.761098][ T1012] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 850.766202][ T1012] ? lock_downgrade+0x880/0x880 [ 850.771709][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.778104][ T1012] mutex_lock_nested+0x16/0x20 [ 850.782859][ T1012] ? mutex_lock_nested+0x16/0x20 [ 850.787911][ T1012] rtnetlink_rcv_msg+0x40a/0xb00 [ 850.792988][ T1012] ? rtnetlink_put_metrics+0x560/0x560 [ 850.798587][ T1012] ? netlink_deliver_tap+0x22d/0xbf0 [ 850.803858][ T1012] ? find_held_lock+0x35/0x130 [ 850.808727][ T1012] netlink_rcv_skb+0x17a/0x460 [ 850.813494][ T1012] ? rtnetlink_put_metrics+0x560/0x560 [ 850.819128][ T1012] ? netlink_ack+0xb50/0xb50 [ 850.823717][ T1012] ? kasan_check_read+0x11/0x20 [ 850.828684][ T1012] ? netlink_deliver_tap+0x254/0xbf0 [ 850.834116][ T1012] rtnetlink_rcv+0x1d/0x30 [ 850.838685][ T1012] netlink_unicast+0x536/0x720 [ 850.843445][ T1012] ? netlink_attachskb+0x770/0x770 [ 850.848680][ T1012] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 850.854411][ T1012] ? __check_object_size+0x3d/0x42f [ 850.859872][ T1012] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 850.865584][ T1012] netlink_sendmsg+0x8ae/0xd70 [ 850.870453][ T1012] ? netlink_unicast+0x720/0x720 [ 850.875375][ T1012] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 850.881014][ T1012] ? apparmor_socket_sendmsg+0x2a/0x30 [ 850.886455][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.892926][ T1012] ? security_socket_sendmsg+0x93/0xc0 [ 850.898876][ T1012] ? netlink_unicast+0x720/0x720 [ 850.903797][ T1012] sock_sendmsg+0xdd/0x130 [ 850.908563][ T1012] ___sys_sendmsg+0x806/0x930 [ 850.913249][ T1012] ? copy_msghdr_from_user+0x430/0x430 [ 850.918861][ T1012] ? __local_bh_enable_ip+0x15a/0x270 [ 850.924238][ T1012] ? lockdep_hardirqs_on+0x418/0x5d0 [ 850.929666][ T1012] ? release_sock+0x158/0x1c0 [ 850.934346][ T1012] ? trace_hardirqs_on+0x67/0x230 [ 850.939519][ T1012] ? release_sock+0x158/0x1c0 [ 850.944206][ T1012] ? __local_bh_enable_ip+0x15a/0x270 [ 850.949722][ T1012] ? _raw_spin_unlock_bh+0x31/0x40 [ 850.954838][ T1012] ? release_sock+0x158/0x1c0 [ 850.959662][ T1012] ? sock_setsockopt+0x197/0x1f70 [ 850.964693][ T1012] ? sock_enable_timestamp+0xe0/0xe0 [ 850.970110][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 850.976354][ T1012] ? __fget_light+0x1a9/0x230 [ 850.981169][ T1012] ? __fdget+0x1b/0x20 [ 850.985241][ T1012] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 850.991620][ T1012] __sys_sendmsg+0x105/0x1d0 [ 850.996225][ T1012] ? __ia32_sys_shutdown+0x80/0x80 [ 851.001485][ T1012] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 851.007065][ T1012] ? do_syscall_64+0x26/0x610 [ 851.011745][ T1012] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 851.017957][ T1012] ? do_syscall_64+0x26/0x610 [ 851.022649][ T1012] __x64_sys_sendmsg+0x78/0xb0 [ 851.028294][ T1012] do_syscall_64+0x103/0x610 [ 851.032910][ T1012] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 851.038945][ T1012] RIP: 0033:0x4459f9 [ 851.042840][ T1012] Code: ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 <7a> fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd [ 851.062610][ T1012] RSP: 002b:00007fffa59f16e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 851.071154][ T1012] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004459f9 [ 851.079244][ T1012] RDX: 00000000000000c4 RSI: 0000000020000300 RDI: 0000000000000003 [ 851.087337][ T1012] RBP: 00000000000a8d55 R08: 00000000004002c8 R09: 00000000004002c8 [ 851.095307][ T1012] R10: 00000000200015a6 R11: 0000000000000246 R12: 0000000000406890 [ 851.103432][ T1012] R13: 0000000000406920 R14: 0000000000000000 R15: 0000000000000000 [ 851.111742][ T1012] INFO: task syz-executor691:8138 blocked for more than 140 seconds. [ 851.119974][ T1012] Not tainted 5.0.0-rc6-next-20190215 #36 [ 851.126211][ T1012] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 851.135088][ T1012] syz-executor691 D28008 8138 7513 0x00000004 [ 851.141580][ T1012] Call Trace: [ 851.144891][ T1012] __schedule+0x817/0x1cc0 [ 851.149473][ T1012] ? __mutex_lock+0x721/0x1310 [ 851.154251][ T1012] ? __sched_text_start+0x8/0x8 [ 851.160010][ T1012] schedule+0x92/0x180 [ 851.164085][ T1012] schedule_preempt_disabled+0x13/0x20 [ 851.169731][ T1012] __mutex_lock+0x726/0x1310 [ 851.174325][ T1012] ? rtnetlink_rcv_msg+0x40a/0xb00 [ 851.179603][ T1012] ? mutex_trylock+0x1e0/0x1e0 [ 851.184388][ T1012] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 851.189673][ T1012] ? lock_downgrade+0x880/0x880 [ 851.194526][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 851.200929][ T1012] mutex_lock_nested+0x16/0x20 [ 851.205695][ T1012] ? mutex_lock_nested+0x16/0x20 [ 851.210791][ T1012] rtnetlink_rcv_msg+0x40a/0xb00 [ 851.215734][ T1012] ? rtnetlink_put_metrics+0x560/0x560 [ 851.221353][ T1012] ? netlink_deliver_tap+0x22d/0xbf0 [ 851.226775][ T1012] ? find_held_lock+0x35/0x130 [ 851.231551][ T1012] netlink_rcv_skb+0x17a/0x460 [ 851.236316][ T1012] ? rtnetlink_put_metrics+0x560/0x560 [ 851.241959][ T1012] ? netlink_ack+0xb50/0xb50 [ 851.246561][ T1012] ? kasan_check_read+0x11/0x20 [ 851.251585][ T1012] ? netlink_deliver_tap+0x254/0xbf0 [ 851.257044][ T1012] rtnetlink_rcv+0x1d/0x30 [ 851.261473][ T1012] netlink_unicast+0x536/0x720 [ 851.266243][ T1012] ? netlink_attachskb+0x770/0x770 [ 851.271558][ T1012] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 851.277431][ T1012] ? __check_object_size+0x3d/0x42f [ 851.282650][ T1012] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 851.289283][ T1012] netlink_sendmsg+0x8ae/0xd70 [ 851.294065][ T1012] ? netlink_unicast+0x720/0x720 [ 851.299184][ T1012] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 851.304736][ T1012] ? apparmor_socket_sendmsg+0x2a/0x30 [ 851.310365][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 851.316758][ T1012] ? security_socket_sendmsg+0x93/0xc0 [ 851.322224][ T1012] ? netlink_unicast+0x720/0x720 [ 851.327328][ T1012] sock_sendmsg+0xdd/0x130 [ 851.331750][ T1012] ___sys_sendmsg+0x806/0x930 [ 851.336431][ T1012] ? copy_msghdr_from_user+0x430/0x430 [ 851.342089][ T1012] ? __local_bh_enable_ip+0x15a/0x270 [ 851.347614][ T1012] ? lockdep_hardirqs_on+0x418/0x5d0 [ 851.352906][ T1012] ? release_sock+0x158/0x1c0 [ 851.357751][ T1012] ? trace_hardirqs_on+0x67/0x230 [ 851.362789][ T1012] ? release_sock+0x158/0x1c0 [ 851.367639][ T1012] ? __local_bh_enable_ip+0x15a/0x270 [ 851.373016][ T1012] ? _raw_spin_unlock_bh+0x31/0x40 [ 851.378288][ T1012] ? release_sock+0x158/0x1c0 [ 851.382974][ T1012] ? sock_setsockopt+0x197/0x1f70 [ 851.388156][ T1012] ? sock_enable_timestamp+0xe0/0xe0 [ 851.393453][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 851.399858][ T1012] ? __fget_light+0x1a9/0x230 [ 851.404539][ T1012] ? __fdget+0x1b/0x20 [ 851.408769][ T1012] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 851.415017][ T1012] __sys_sendmsg+0x105/0x1d0 [ 851.420504][ T1012] ? __ia32_sys_shutdown+0x80/0x80 [ 851.425644][ T1012] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 851.431276][ T1012] ? do_syscall_64+0x26/0x610 [ 851.435956][ T1012] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 851.442163][ T1012] ? do_syscall_64+0x26/0x610 [ 851.446997][ T1012] __x64_sys_sendmsg+0x78/0xb0 [ 851.451761][ T1012] do_syscall_64+0x103/0x610 [ 851.456355][ T1012] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 851.462409][ T1012] RIP: 0033:0x4459f9 [ 851.466306][ T1012] Code: ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 <7a> fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd [ 851.486212][ T1012] RSP: 002b:00007fffa59f16e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 851.494785][ T1012] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004459f9 [ 851.502893][ T1012] RDX: 00000000000000c4 RSI: 0000000020000300 RDI: 0000000000000003 [ 851.510993][ T1012] RBP: 00000000000a8d56 R08: 00000000004002c8 R09: 00000000004002c8 [ 851.519087][ T1012] R10: 00000000200015a6 R11: 0000000000000246 R12: 0000000000406890 [ 851.527232][ T1012] R13: 0000000000406920 R14: 0000000000000000 R15: 0000000000000000 [ 851.535229][ T1012] INFO: task syz-executor691:8139 blocked for more than 140 seconds. [ 851.543449][ T1012] Not tainted 5.0.0-rc6-next-20190215 #36 [ 851.550582][ T1012] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 851.559400][ T1012] syz-executor691 D27984 8139 7510 0x00000004 [ 851.565741][ T1012] Call Trace: [ 851.569194][ T1012] __schedule+0x817/0x1cc0 [ 851.573620][ T1012] ? __mutex_lock+0x721/0x1310 [ 851.578538][ T1012] ? __sched_text_start+0x8/0x8 [ 851.583415][ T1012] schedule+0x92/0x180 [ 851.587641][ T1012] schedule_preempt_disabled+0x13/0x20 [ 851.593104][ T1012] __mutex_lock+0x726/0x1310 [ 851.597955][ T1012] ? rtnetlink_rcv_msg+0x40a/0xb00 [ 851.603076][ T1012] ? mutex_trylock+0x1e0/0x1e0 [ 851.607988][ T1012] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 851.613109][ T1012] ? lock_downgrade+0x880/0x880 [ 851.618117][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 851.624366][ T1012] mutex_lock_nested+0x16/0x20 [ 851.629282][ T1012] ? mutex_lock_nested+0x16/0x20 [ 851.634526][ T1012] rtnetlink_rcv_msg+0x40a/0xb00 [ 851.639647][ T1012] ? rtnetlink_put_metrics+0x560/0x560 [ 851.645126][ T1012] ? netlink_deliver_tap+0x22d/0xbf0 [ 851.650590][ T1012] ? find_held_lock+0x35/0x130 [ 851.655368][ T1012] netlink_rcv_skb+0x17a/0x460 [ 851.660286][ T1012] ? rtnetlink_put_metrics+0x560/0x560 [ 851.665754][ T1012] ? netlink_ack+0xb50/0xb50 [ 851.670511][ T1012] ? kasan_check_read+0x11/0x20 [ 851.675366][ T1012] ? netlink_deliver_tap+0x254/0xbf0 [ 851.681538][ T1012] rtnetlink_rcv+0x1d/0x30 [ 851.685971][ T1012] netlink_unicast+0x536/0x720 [ 851.690897][ T1012] ? netlink_attachskb+0x770/0x770 [ 851.696014][ T1012] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 851.701882][ T1012] ? __check_object_size+0x3d/0x42f [ 851.707202][ T1012] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 851.712932][ T1012] netlink_sendmsg+0x8ae/0xd70 [ 851.717842][ T1012] ? netlink_unicast+0x720/0x720 [ 851.722787][ T1012] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 851.728462][ T1012] ? apparmor_socket_sendmsg+0x2a/0x30 [ 851.733922][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 851.740300][ T1012] ? security_socket_sendmsg+0x93/0xc0 [ 851.745764][ T1012] ? netlink_unicast+0x720/0x720 [ 851.750843][ T1012] sock_sendmsg+0xdd/0x130 [ 851.755261][ T1012] ___sys_sendmsg+0x806/0x930 [ 851.760094][ T1012] ? copy_msghdr_from_user+0x430/0x430 [ 851.765565][ T1012] ? __local_bh_enable_ip+0x15a/0x270 [ 851.771076][ T1012] ? lockdep_hardirqs_on+0x418/0x5d0 [ 851.776362][ T1012] ? release_sock+0x158/0x1c0 [ 851.781188][ T1012] ? trace_hardirqs_on+0x67/0x230 [ 851.786843][ T1012] ? release_sock+0x158/0x1c0 [ 851.791534][ T1012] ? __local_bh_enable_ip+0x15a/0x270 [ 851.797051][ T1012] ? _raw_spin_unlock_bh+0x31/0x40 [ 851.802334][ T1012] ? release_sock+0x158/0x1c0 [ 851.807880][ T1012] ? sock_setsockopt+0x197/0x1f70 [ 851.812935][ T1012] ? sock_enable_timestamp+0xe0/0xe0 [ 851.818430][ T1012] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 851.824676][ T1012] ? __fget_light+0x1a9/0x230 [ 851.829509][ T1012] ? __fdget+0x1b/0x20 [ 851.833591][ T1012] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 851.839973][ T1012] __sys_sendmsg+0x105/0x1d0 [ 851.844583][ T1012] ? __ia32_sys_shutdown+0x80/0x80 [ 851.849832][ T1012] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 851.855287][ T1012] ? do_syscall_64+0x26/0x610 [ 851.860092][ T1012] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 851.866156][ T1012] ? do_syscall_64+0x26/0x610 [ 851.870961][ T1012] __x64_sys_sendmsg+0x78/0xb0 [ 851.875725][ T1012] do_syscall_64+0x103/0x610 [ 851.880459][ T1012] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 851.886345][ T1012] RIP: 0033:0x4459f9 [ 851.890356][ T1012] Code: ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 <7a> fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd ff 11 7a fd [ 851.910175][ T1012] RSP: 002b:00007fffa59f16e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 851.918793][ T1012] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004459f9 [ 851.926886][ T1012] RDX: 00000000000000c4 RSI: 0000000020000300 RDI: 0000000000000003 [ 851.934855][ T1012] RBP: 00000000000a8d52 R08: 00000000004002c8 R09: 00000000004002c8 [ 851.943700][ T1012] R10: 00000000200015a6 R11: 0000000000000246 R12: 0000000000406890 [ 851.951783][ T1012] R13: 0000000000406920 R14: 0000000000000000 R15: 0000000000000000 [ 851.959882][ T1012] [ 851.959882][ T1012] Showing all locks held in the system: [ 851.967702][ T1012] 3 locks held by kworker/1:1/22: [ 851.972710][ T1012] #0: 00000000ea053c56 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x87e/0x1790 [ 851.983954][ T1012] #1: 00000000bdc7f557 ((addr_chk_work).work){+.+.}, at: process_one_work+0x8b4/0x1790 [ 851.993797][ T1012] #2: 000000000b3e60d2 (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 [ 852.001909][ T1012] 1 lock held by khungtaskd/1012: [ 852.007030][ T1012] #0: 00000000c30a1af1 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 852.016374][ T1012] 1 lock held by rsyslogd/7388: [ 852.021340][ T1012] #0: 000000003c86614c (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 852.030055][ T1012] 2 locks held by getty/7478: [ 852.034718][ T1012] #0: 000000003ec4330f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 852.043789][ T1012] #1: 000000003fb6e31c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 852.053461][ T1012] 2 locks held by getty/7479: [ 852.058236][ T1012] #0: 0000000064e8767c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 852.068031][ T1012] #1: 00000000eeddbcf9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 852.077720][ T1012] 2 locks held by getty/7480: [ 852.082385][ T1012] #0: 00000000eb3b869f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 852.091510][ T1012] #1: 0000000078e656c0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 852.101233][ T1012] 2 locks held by getty/7481: [ 852.105904][ T1012] #0: 000000002b8ebf98 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 852.115012][ T1012] #1: 0000000048d30d63 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 852.124715][ T1012] 2 locks held by getty/7482: [ 852.129505][ T1012] #0: 000000002a7127aa (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 852.138613][ T1012] #1: 00000000b94e37cb (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 852.148298][ T1012] 2 locks held by getty/7483: [ 852.152991][ T1012] #0: 00000000baa2a321 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 852.162102][ T1012] #1: 00000000de5afd93 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 852.171811][ T1012] 2 locks held by getty/7484: [ 852.176721][ T1012] #0: 00000000ad711a30 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 852.185674][ T1012] #1: 000000005c036ce5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 852.195391][ T1012] 1 lock held by syz-executor691/8129: [ 852.201696][ T1012] 1 lock held by syz-executor691/8135: [ 852.207273][ T1012] #0: 000000000b3e60d2 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 [ 852.216147][ T1012] 1 lock held by syz-executor691/8136: [ 852.221720][ T1012] #0: 000000000b3e60d2 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 [ 852.230698][ T1012] 1 lock held by syz-executor691/8137: [ 852.236147][ T1012] #0: 000000000b3e60d2 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 [ 852.245141][ T1012] 1 lock held by syz-executor691/8138: [ 852.250716][ T1012] #0: 000000000b3e60d2 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 [ 852.259703][ T1012] 1 lock held by syz-executor691/8139: [ 852.265152][ T1012] #0: 000000000b3e60d2 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 [ 852.274145][ T1012] [ 852.276469][ T1012] ============================================= [ 852.276469][ T1012] [ 852.284961][ T1012] NMI backtrace for cpu 0 [ 852.289320][ T1012] CPU: 0 PID: 1012 Comm: khungtaskd Not tainted 5.0.0-rc6-next-20190215 #36 [ 852.297981][ T1012] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 852.308027][ T1012] Call Trace: [ 852.311314][ T1012] dump_stack+0x172/0x1f0 [ 852.315646][ T1012] nmi_cpu_backtrace.cold+0x63/0xa4 [ 852.320859][ T1012] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 852.326524][ T1012] nmi_trigger_cpumask_backtrace+0x1be/0x236 [ 852.332540][ T1012] arch_trigger_cpumask_backtrace+0x14/0x20 [ 852.338444][ T1012] watchdog+0x9b2/0xeb0 [ 852.342621][ T1012] kthread+0x357/0x430 [ 852.346709][ T1012] ? reset_hung_task_detector+0x30/0x30 [ 852.352307][ T1012] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 852.358561][ T1012] ret_from_fork+0x3a/0x50 [ 852.363098][ T1012] Sending NMI from CPU 0 to CPUs 1: [ 852.369095][ C1] NMI backtrace for cpu 1 [ 852.369101][ C1] CPU: 1 PID: 8129 Comm: syz-executor691 Not tainted 5.0.0-rc6-next-20190215 #36 [ 852.369106][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 852.369110][ C1] RIP: 0010:__might_sleep+0x9a/0x190 [ 852.369120][ C1] Code: d0 00 00 00 48 83 bb 38 13 00 00 00 74 09 80 3d d8 ce 0b 08 00 74 1b 44 89 f2 44 89 ee 4c 89 e7 e8 eb fc ff ff 48 83 c4 10 5b <41> 5c 41 5d 41 5e 5d c3 65 48 8b 1c 25 00 ee 01 00 48 8d bb 38 13 [ 852.369124][ C1] RSP: 0018:ffff888012cef290 EFLAGS: 00000286 [ 852.369131][ C1] RAX: 0000000000000007 RBX: 0000000000082cc0 RCX: ffff8880698b8ac0 [ 852.369135][ C1] RDX: 0000000000000000 RSI: ffffffff889a50c0 RDI: ffff8880698b8264 [ 852.369140][ C1] RBP: ffff888012cef2a8 R08: ffff8880698b8240 R09: 0000000000000002 [ 852.369145][ C1] R10: ffff8880698b8ae8 R11: ffffffff8a05f980 R12: ffffffff885d7302 [ 852.369149][ C1] R13: 00000000000001a1 R14: 0000000000000000 R15: 0000000000082cc0 [ 852.369155][ C1] FS: 0000000002015880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 852.369159][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 852.369163][ C1] CR2: ffffffffff600400 CR3: 000000001e7d8000 CR4: 00000000001406e0 [ 852.369168][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 852.369172][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 852.369175][ C1] Call Trace: [ 852.369179][ C1] kmem_cache_alloc_node_trace+0x266/0x720 [ 852.369182][ C1] __kmalloc_node_track_caller+0x3d/0x70 [ 852.369186][ C1] __kmalloc_reserve.isra.0+0x40/0xf0 [ 852.369189][ C1] __alloc_skb+0x10b/0x5e0 [ 852.369192][ C1] ? skb_trim+0x190/0x190 [ 852.369195][ C1] ? netlink_broadcast+0x3a/0x50 [ 852.369198][ C1] tcf_action_add+0x12f/0x370 [ 852.369201][ C1] ? tca_action_gd+0x17a0/0x17a0 [ 852.369204][ C1] ? mark_held_locks+0xa4/0xf0 [ 852.369208][ C1] ? tc_ctl_action+0x3c5/0x4bd [ 852.369211][ C1] tc_ctl_action+0x3b6/0x4bd [ 852.369214][ C1] ? tcf_action_add+0x370/0x370 [ 852.369218][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 852.369221][ C1] ? tcf_action_add+0x370/0x370 [ 852.369224][ C1] rtnetlink_rcv_msg+0x465/0xb00 [ 852.369228][ C1] ? rtnetlink_put_metrics+0x560/0x560 [ 852.369232][ C1] ? netlink_deliver_tap+0x22d/0xbf0 [ 852.369235][ C1] ? find_held_lock+0x35/0x130 [ 852.369238][ C1] netlink_rcv_skb+0x17a/0x460 [ 852.369242][ C1] ? rtnetlink_put_metrics+0x560/0x560 [ 852.369245][ C1] ? netlink_ack+0xb50/0xb50 [ 852.369248][ C1] ? kasan_check_read+0x11/0x20 [ 852.369252][ C1] ? netlink_deliver_tap+0x254/0xbf0 [ 852.369255][ C1] rtnetlink_rcv+0x1d/0x30 [ 852.369258][ C1] netlink_unicast+0x536/0x720 [ 852.369262][ C1] ? netlink_attachskb+0x770/0x770 [ 852.369265][ C1] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 852.369269][ C1] ? __check_object_size+0x3d/0x42f [ 852.369273][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 852.369276][ C1] netlink_sendmsg+0x8ae/0xd70 [ 852.369279][ C1] ? netlink_unicast+0x720/0x720 [ 852.369283][ C1] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 852.369287][ C1] ? apparmor_socket_sendmsg+0x2a/0x30 [ 852.369291][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 852.369294][ C1] ? security_socket_sendmsg+0x93/0xc0 [ 852.369298][ C1] ? netlink_unicast+0x720/0x720 [ 852.369301][ C1] sock_sendmsg+0xdd/0x130 [ 852.369304][ C1] ___sys_sendmsg+0x806/0x930 [ 852.369307][ C1] ? copy_msghdr_from_user+0x430/0x430 [ 852.369311][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 852.369314][ C1] ? lockdep_hardirqs_on+0x418/0x5d0 [ 852.369317][ C1] ? release_sock+0x158/0x1c0 [ 852.369320][ C1] ? trace_hardirqs_on+0x67/0x230 [ 852.369323][ C1] ? release_sock+0x158/0x1c0 [ 852.369326][ C1] ? __local_bh_enable_ip+0x15a/0x270 [ 852.369329][ C1] ? _raw_spin_unlock_bh+0x31/0x40 [ 852.369332][ C1] ? release_sock+0x158/0x1c0 [ 852.369335][ C1] ? sock_setsockopt+0x197/0x1f70 [ 852.369338][ C1] ? sock_enable_timestamp+0xe0/0xe0 [ 852.369341][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 852.369344][ C1] ? __fget_light+0x1a9/0x230 [ 852.369347][ C1] ? __fdget+0x1b/0x20 [ 852.369350][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 852.369353][ C1] __sys_sendmsg+0x105/0x1d0 [ 852.369356][ C1] ? __ia32_sys_shutdown+0x80/0x80 [ 852.369359][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 852.369362][ C1] ? do_syscall_64+0x26/0x610 [ 852.369365][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 852.369368][ C1] ? do_syscall_64+0x26/0x610 [ 852.369371][ C1] __x64_sys_sendmsg+0x78/0xb0 [ 852.369374][ C1] do_syscall_64+0x103/0x610 [ 852.369377][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 852.369380][ C1] RIP: 0033:0x4459f9 [ 852.369388][ C1] Code: e8 ac e8 ff ff 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 0b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 852.369392][ C1] RSP: 002b:00007fffa59f16e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 852.369399][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004459f9 [ 852.369403][ C1] RDX: 00000000000000c4 RSI: 0000000020000300 RDI: 0000000000000003 [ 852.369407][ C1] RBP: 00000000000a8d47 R08: 00000000004002c8 R09: 00000000004002c8 [ 852.369411][ C1] R10: 00000000200015a6 R11: 0000000000000246 R12: 0000000000406890 [ 852.369416][ C1] R13: 0000000000406920 R14: 0000000000000000 R15: 0000000000000000 [ 852.371544][ T1012] Kernel panic - not syncing: hung_task: blocked tasks [ 852.899834][ T1012] CPU: 0 PID: 1012 Comm: khungtaskd Not tainted 5.0.0-rc6-next-20190215 #36 [ 852.908492][ T1012] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 852.918909][ T1012] Call Trace: [ 852.922200][ T1012] dump_stack+0x172/0x1f0 [ 852.926532][ T1012] panic+0x2cb/0x65c [ 852.930425][ T1012] ? __warn_printk+0xf3/0xf3 [ 852.935023][ T1012] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 852.940654][ T1012] ? ___preempt_schedule+0x16/0x18 [ 852.945770][ T1012] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 852.951922][ T1012] ? nmi_trigger_cpumask_backtrace+0x1fa/0x236 [ 852.958070][ T1012] ? nmi_trigger_cpumask_backtrace+0x204/0x236 [ 852.964217][ T1012] ? nmi_trigger_cpumask_backtrace+0x19e/0x236 [ 852.970370][ T1012] watchdog+0x9c3/0xeb0 [ 852.974527][ T1012] kthread+0x357/0x430 [ 852.978594][ T1012] ? reset_hung_task_detector+0x30/0x30 [ 852.984136][ T1012] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 852.990374][ T1012] ret_from_fork+0x3a/0x50 [ 852.996437][ T1012] Kernel Offset: disabled [ 853.000780][ T1012] Rebooting in 86400 seconds..