Hi Marian,

I have a lvm failure below when creating a lot of thin snapshot LVs for containers as rootfs.

```

*** buffer overflow detected ***: lvcreate terminated\n======= Backtrace: =========\n/lib64/libc.so.6(__fortify_fail+0x37)[0x7f192c2389e7]\n/lib64/libc.so.6(+0x115b62)[0x7f192c236b62]\n/lib64/libc.so.6(+0x117947)[0x7f192c238947]\n/lib64/libdevmapper-event.so.1.02(+0x21db)[0x7f192cfd21db]\n/lib64/libdevmapper-event.so.1.02(daemon_talk+0xb5)[0x7f192cfd2a55]\n/lib64/libdevmapper-event.so.1.02(+0x331b)[0x7f192cfd331b]\n/lib64/libdevmapper-event.so.1.02(dm_event_get_registered_device+0x77)[0x7f192cfd3a47]\nlvcreate(monitor_dev_for_events+0x3cc)[0x556ec3b5d75c]\nlvcreate(monitor_dev_for_events+0x2ee)[0x556ec3b5d67e]\nlvcreate(lv_suspend_if_active+0x6cc)[0x556ec3b5f25c]\nlvcreate(+0x14196d)

```

My LVM version:

```

```

I see you recently pushed this patch, looks like a fix for such problem:

```

```

May I ask your help for some confirmation?

- how can we reproduce this problem?

- do you think this patch can fix my problem?

Thanks in advance!

Eric