libio: Limit buffer size to 8192 bytes [BZ #4099]

This avoids overly large buffers with network file systems which report
very large block sizes.

1 files changed, 6 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 40f460f..c2cb608 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2016-11-30  Florian Weimer  <fweimer@redhat.com>
+
+	[BZ #4099]
+	* libio/filedoalloc.c (_IO_file_doallocate): Limit buffer size to
+	_IO_BUFSIZ (8192).
+
 2016-11-30  Carlos O'Donell  <carlos@redhat.com>
 
 	* PROJECTS: Remove file.