Added bug about qemu not being cleaned up after segfault.

diff --git a/BUGS b/BUGS
index cfafa14..e632377 100644 (file)
--- a/BUGS
+++ b/BUGS
@@ -3,6 +3,10 @@
 [libguestfs] /tmp/libguestfs temporary directory is not cleaned up
 (sometimes).
 
+[libguestfs] qemu process not cleaned up occasionally.  This appears
+to happen only if the main program or library segfaults, in which case
+the atexit handler which would normally perform cleanup is not run.
+
 [kernel?] Kernel boot times are significantly slower for Fedora 11/12
 than for Fedora 10, like 2-3 times slower.  This greatly affects the
 time it takes to launch the subprocess (although it does still work).