From: Eric Biggers <ebiggers3@gmail.com>
Date: Tue, 1 Jan 2013 06:42:01 +0000 (-0600)
Subject: rebuild_wim(): Fix use of freed memory
X-Git-Tag: v1.2.3~1
X-Git-Url: https://wimlib.net/git/?p=wimlib;a=commitdiff_plain;h=7581bc32cef9ad931183ce582454fffbd7401ca1;ds=sidebyside

rebuild_wim(): Fix use of freed memory

update_lte_of_staging_file() can result in the freeing of the lookup table
entry, so the staging list should be traversed with list_for_each_entry_safe()
rather than list_for_each_entry().
---

diff --git a/src/mount_image.c b/src/mount_image.c
index d2ce94b2..28a807d7 100644
--- a/src/mount_image.c
+++ b/src/mount_image.c
@@ -802,7 +802,7 @@ static int rebuild_wim(struct wimfs_context *ctx, int write_flags,
 	}
 
 	DEBUG("Calculating SHA1 checksums for all new staging files.");
-	list_for_each_entry(lte, &ctx->staging_list, staging_list) {
+	list_for_each_entry_safe(lte, tmp, &ctx->staging_list, staging_list) {
 		ret = update_lte_of_staging_file(lte, w->lookup_table);
 		if (ret != 0)
 			return ret;