INFO: task syz-executor.2:19461 blocked for more than 143 seconds.
Not tainted 5.1.0-rc5-next-20190418 #28
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D28128 19461 7772 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2817 [inline]
__schedule+0x7d1/0x15c0 kernel/sched/core.c:3444
schedule+0xa8/0x260 kernel/sched/core.c:3508
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3567
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
sock_do_ioctl+0x254/0x300 net/socket.c:1050
sock_ioctl+0x32b/0x610 net/socket.c:1168
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: Bad RIP value.
RSP: 002b:00007f774e1a0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 0000000020000000 RSI: 0000001000008912 RDI: 0000000000000004
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f774e1a16d4
R13: 00000000004bfe5a R14: 00000000004d21b0 R15: 00000000ffffffff
INFO: task syz-executor.2:19467 blocked for more than 143 seconds.
Not tainted 5.1.0-rc5-next-20190418 #28
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D28128 19467 7772 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2817 [inline]
__schedule+0x7d1/0x15c0 kernel/sched/core.c:3444
schedule+0xa8/0x260 kernel/sched/core.c:3508
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3567
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
sock_do_ioctl+0x254/0x300 net/socket.c:1050
sock_ioctl+0x32b/0x610 net/socket.c:1168
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: Bad RIP value.
RSP: 002b:00007f774e17fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 0000000020000000 RSI: 0000001000008912 RDI: 0000000000000004
RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f774e1806d4
R13: 00000000004bfe5a R14: 00000000004d21b0 R15: 00000000ffffffff
INFO: task syz-executor.5:19459 blocked for more than 144 seconds.
Not tainted 5.1.0-rc5-next-20190418 #28
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D26768 19459 7790 0x00004004
Call Trace:
context_switch kernel/sched/core.c:2817 [inline]
__schedule+0x7d1/0x15c0 kernel/sched/core.c:3444
schedule+0xa8/0x260 kernel/sched/core.c:3508
schedule_timeout+0x717/0xc50 kernel/time/timer.c:1783
do_wait_for_common kernel/sched/completion.c:83 [inline]
__wait_for_common kernel/sched/completion.c:104 [inline]
wait_for_common kernel/sched/completion.c:115 [inline]
wait_for_completion+0x29c/0x440 kernel/sched/completion.c:136
__flush_work+0x50f/0xa70 kernel/workqueue.c:3039
flush_work+0x18/0x20 kernel/workqueue.c:3060
flush_all_backlogs net/core/dev.c:5356 [inline]
rollback_registered_many+0x61b/0xfd0 net/core/dev.c:8199
unregister_netdevice_many.part.0+0x1b/0x1f0 net/core/dev.c:9322
unregister_netdevice_many+0x3b/0x50 net/core/dev.c:9321
rtnl_delete_link+0xdc/0x130 net/core/rtnetlink.c:2798
rtnl_dellink+0x35a/0x980 net/core/rtnetlink.c:2852
rtnetlink_rcv_msg+0x465/0xb00 net/core/rtnetlink.c:5195
netlink_rcv_skb+0x17a/0x460 net/netlink/af_netlink.c:2486
rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5213
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x536/0x720 net/netlink/af_netlink.c:1337
netlink_sendmsg+0x8a5/0xd60 net/netlink/af_netlink.c:1926
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xdd/0x130 net/socket.c:661
___sys_sendmsg+0x806/0x930 net/socket.c:2260
__sys_sendmsg+0x105/0x1d0 net/socket.c:2298
__do_sys_sendmsg net/socket.c:2307 [inline]
__se_sys_sendmsg net/socket.c:2305 [inline]
__x64_sys_sendmsg+0x78/0xb0 net/socket.c:2305
do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: Bad RIP value.
RSP: 002b:00007fd7d53fdc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd7d53fe6d4
R13: 00000000004c5e62 R14: 00000000004da658 R15: 00000000ffffffff
INFO: task syz-executor.5:19486 blocked for more than 144 seconds.
Not tainted 5.1.0-rc5-next-20190418 #28
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D29968 19486 7790 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2817 [inline]
__schedule+0x7d1/0x15c0 kernel/sched/core.c:3444
schedule+0xa8/0x260 kernel/sched/core.c:3508
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3567
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
sock_do_ioctl+0x254/0x300 net/socket.c:1050
sock_ioctl+0x32b/0x610 net/socket.c:1168
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: Bad RIP value.
RSP: 002b:00007fd7d53bbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 0000000020000000 RSI: 0000001000008912 RDI: 0000000000000004
RBP: 000000000073c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd7d53bc6d4
R13: 00000000004bfe5a R14: 00000000004d21b0 R15: 00000000ffffffff
INFO: task syz-executor.1:19458 blocked for more than 145 seconds.
Not tainted 5.1.0-rc5-next-20190418 #28
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D28384 19458 11508 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2817 [inline]
__schedule+0x7d1/0x15c0 kernel/sched/core.c:3444
schedule+0xa8/0x260 kernel/sched/core.c:3508
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3567
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
tun_detach drivers/net/tun.c:740 [inline]
tun_chr_close+0x3f/0x180 drivers/net/tun.c:3449
__fput+0x2e5/0x8d0 fs/file_table.c:278
____fput+0x16/0x20 fs/file_table.c:309
task_work_run+0x14a/0x1c0 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167
prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
syscall_return_slowpath arch/x86/entry/common.c:276 [inline]
do_syscall_64+0x57e/0x670 arch/x86/entry/common.c:301
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4129e1
Code: bb c8 00 00 00 ff 15 1e 6e 24 00 85 c0 89 c5 0f 85 7e fc ff ff e9 32 ff ff ff 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 48 <89> 5c 24 d0 4c 89 6c 24 e8 48 89 d3 48 89 6c 24 d8 4c 89 64 24 e0
RSP: 002b:00007ffea781eb30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000009 RCX: 00000000004129e1
RDX: 0000000000000000 RSI: 00000000000010a6 RDI: 0000000000000008
RBP: 000000000073c900 R08: 0000000057ddb0a5 R09: 0000000057ddb0a9
R10: 00007ffea781ec00 R11: 0000000000000293 R12: 0000000000000001
R13: 000000000073c900 R14: 00000000000b1144 R15: 000000000073bfac
INFO: task syz-executor.4:19479 blocked for more than 145 seconds.
Not tainted 5.1.0-rc5-next-20190418 #28
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D29936 19479 7780 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2817 [inline]
__schedule+0x7d1/0x15c0 kernel/sched/core.c:3444
schedule+0xa8/0x260 kernel/sched/core.c:3508
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3567
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
sock_do_ioctl+0x254/0x300 net/socket.c:1050
sock_ioctl+0x32b/0x610 net/socket.c:1168
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: Bad RIP value.
RSP: 002b:00007f9d3ffa4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 00000000200000c0 RSI: 0000001000008912 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9d3ffa56d4
R13: 00000000004bfe5a R14: 00000000004d21b0 R15: 00000000ffffffff
INFO: task syz-executor.4:19480 blocked for more than 146 seconds.
Not tainted 5.1.0-rc5-next-20190418 #28
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D28128 19480 7780 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2817 [inline]
__schedule+0x7d1/0x15c0 kernel/sched/core.c:3444
schedule+0xa8/0x260 kernel/sched/core.c:3508
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3567
__mutex_lock_common kernel/locking/mutex.c:1002 [inline]
__mutex_lock+0x726/0x1310 kernel/locking/mutex.c:1072
mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
sock_do_ioctl+0x254/0x300 net/socket.c:1050
sock_ioctl+0x32b/0x610 net/socket.c:1168
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: Bad RIP value.
RSP: 002b:00007f9d3ff83c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 00000000200000c0 RSI: 0000001000008912 RDI: 0000000000000003
RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9d3ff846d4
R13: 00000000004bfe5a R14: 00000000004d21b0 R15: 00000000ffffffff
Showing all locks held in the system:
1 lock held by khungtaskd/1043:
#0: 000000007132fc6f (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:5046
1 lock held by rsyslogd/7637:
#0: 000000005e1e0efd (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:801
2 locks held by getty/7727:
#0: 00000000439d8d37 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 0000000090647ca9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7728:
#0: 000000008d64d504 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000006aecc557 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7729:
#0: 00000000ef0206b1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000002fca4cf6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7730:
#0: 000000000e4c7ff0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 000000001c1b5a1a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7731:
#0: 0000000073ebc092 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 0000000035e5d6a1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7732:
#0: 00000000cdea5695 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 0000000098be1214 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by getty/7733:
#0: 000000000c7937fb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 00000000e0818937 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 drivers/tty/n_tty.c:2156
2 locks held by syz-executor.0/19431:
1 lock held by syz-executor.2/19461:
#0: 000000002971a70d (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
1 lock held by syz-executor.2/19467:
#0: 000000002971a70d (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
2 locks held by syz-executor.5/19459:
#0: 000000002971a70d (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:76 [inline]
#0: 000000002971a70d (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 net/core/rtnetlink.c:5192
#1: 000000007c05aeb5 (cpu_hotplug_lock.rw_sem){++++}, at: get_online_cpus include/linux/cpu.h:130 [inline]
#1: 000000007c05aeb5 (cpu_hotplug_lock.rw_sem){++++}, at: flush_all_backlogs net/core/dev.c:5349 [inline]
#1: 000000007c05aeb5 (cpu_hotplug_lock.rw_sem){++++}, at: rollback_registered_many+0x4f0/0xfd0 net/core/dev.c:8199
1 lock held by syz-executor.5/19486:
#0: 000000002971a70d (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
1 lock held by syz-executor.1/19458:
#0: 000000002971a70d (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
1 lock held by syz-executor.4/19479:
#0: 000000002971a70d (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
1 lock held by syz-executor.4/19480:
#0: 000000002971a70d (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
3 locks held by kworker/1:1/19493:
#0: 0000000052b1a2fa ((wq_completion)ipv6_addrconf){+.+.}, at: __write_once_size include/linux/compiler.h:224 [inline]
#0: 0000000052b1a2fa ((wq_completion)ipv6_addrconf){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: 0000000052b1a2fa ((wq_completion)ipv6_addrconf){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: 0000000052b1a2fa ((wq_completion)ipv6_addrconf){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: 0000000052b1a2fa ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_data kernel/workqueue.c:619 [inline]
#0: 0000000052b1a2fa ((wq_completion)ipv6_addrconf){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline]
#0: 0000000052b1a2fa ((wq_completion)ipv6_addrconf){+.+.}, at: process_one_work+0x87e/0x1790 kernel/workqueue.c:2239
#1: 0000000061a0c7b0 ((addr_chk_work).work){+.+.}, at: process_one_work+0x8b4/0x1790 kernel/workqueue.c:2243
#2: 000000002971a70d (rtnl_mutex){+.+.}, at: rtnl_lock+0x17/0x20 net/core/rtnetlink.c:76
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1043 Comm: khungtaskd Not tainted 5.1.0-rc5-next-20190418 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline]
watchdog+0x9b7/0xec0 kernel/hung_task.c:288
kthread+0x357/0x430 kernel/kthread.c:254
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 19431 Comm: syz-executor.0 Not tainted 5.1.0-rc5-next-20190418 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data+0x0/0x70 kernel/kcov.c:122
Code: 83 fa 02 75 20 48 8b 88 e8 12 00 00 8b 80 e4 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d c3 0f 1f 00 <65> 4c 8b 04 25 c0 fd 01 00 65 8b 05 98 36 91 7e a9 00 01 1f 00 75
RSP: 0018:ffff8880ae8099b0 EFLAGS: 00000046
RAX: ffff88804e9025c0 RBX: 0000000000010002 RCX: ffffffff8334f0ae
RDX: 0000000000010002 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffff8880ae8099b8 R08: ffff88804e9025c0 R09: 0000000000000003
R10: ffff8880ae809a30 R11: ffff8880ae82ee7b R12: 0000000000000000
R13: ffff88809338c040 R14: ffff8880ae809a58 R15: 00000000ffffffe4
FS: 00007fbb0fea8700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000960a92 CR3: 00000000969a8000 CR4: 00000000001426f0
Call Trace:
check_preemption_disabled lib/smp_processor_id.c:16 [inline]
debug_smp_processor_id+0x2e/0x280 lib/smp_processor_id.c:57
rcu_dynticks_curr_cpu_in_eqs+0x17/0xb0 kernel/rcu/tree.c:290
rcu_is_watching+0x10/0x30 kernel/rcu/tree.c:872
rcu_read_unlock include/linux/rcupdate.h:645 [inline]
__perf_event_output kernel/events/core.c:6576 [inline]
perf_event_output_forward+0x1fe/0x290 kernel/events/core.c:6585
__perf_event_overflow+0x144/0x370 kernel/events/core.c:8052
perf_swevent_hrtimer+0x272/0x3d0 kernel/events/core.c:9438
__run_hrtimer kernel/time/hrtimer.c:1389 [inline]
__hrtimer_run_queues+0x33e/0xde0 kernel/time/hrtimer.c:1451
hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline]
smp_apic_timer_interrupt+0x120/0x570 arch/x86/kernel/apic/apic.c:1060
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806
RIP: 0010:vcpu_enter_guest+0xf44/0x5f30 arch/x86/kvm/x86.c:7950
Code: ff df 48 c1 e8 03 80 3c 10 00 0f 85 f6 45 00 00 48 83 3d ce 79 85 07 00 0f 84 52 37 00 00 e8 93 d4 63 00 fb 66 0f 1f 44 00 00 01 00 00 00 e8 92 e6 40 00 65 8b 1d 73 0b f5 7e 31 ff 89 de e8
RSP: 0018:ffff888000057a00 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: ffff88804e9025c0 RCX: ffffc90005ddb000
RDX: 0000000000040000 RSI: ffffffff810cf1fd RDI: ffff88804e902e3c
RBP: ffff888000057b10 R08: ffff88804e9025c0 R09: ffff88804e902e60
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880580a84ec
R13: fffffe79187c25c0 R14: 0000000000000000 R15: ffff8880580a84c0
vcpu_run arch/x86/kvm/x86.c:8033 [inline]
kvm_arch_vcpu_ioctl_run+0x425/0x1750 arch/x86/kvm/x86.c:8241
kvm_vcpu_ioctl+0x4dc/0xf90 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2684
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:509 [inline]
do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
__do_sys_ioctl fs/ioctl.c:720 [inline]
__se_sys_ioctl fs/ioctl.c:718 [inline]
__x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fbb0fea7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458c29
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fbb0fea86d4
R13: 00000000004c1baf R14: 00000000004d43d0 R15: 00000000ffffffff