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authorAdam Thomas <adamthomas1111@gmail.com>2013-02-03 02:35:08 +0400
committerArtem Bityutskiy <artem.bityutskiy@linux.intel.com>2013-02-04 14:31:48 +0400
commit8afd500cb52a5d00bab4525dd5a560d199f979b9 (patch)
tree91ee2f6917c1f84300308dc6e659865cae89a3cc /fs/ubifs/ubifs.h
parent2928f0d0c5ebd6c9605c0d98207a44376387c298 (diff)
downloadlinux-8afd500cb52a5d00bab4525dd5a560d199f979b9.tar.xz
UBIFS: fix double free of ubifs_orphan objects
The last orphan in the dnext list has its dnext set to NULL. Because of that, ubifs_delete_orphan assumes that it is not on the dnext list and frees it immediately instead ignoring it as a second delete. The orphan is later freed again by erase_deleted. This change adds an explicit flag to ubifs_orphan indicating whether it is pending delete. Signed-off-by: Adam Thomas <adamthomas1111@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/ubifs/ubifs.h')
-rw-r--r--fs/ubifs/ubifs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index c16fff7271d3..b2babce4d70f 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -905,6 +905,7 @@ struct ubifs_budget_req {
* @inum: inode number
* @new: %1 => added since the last commit, otherwise %0
* @cmt: %1 => commit pending, otherwise %0
+ * @del: %1 => delete pending, otherwise %0
*/
struct ubifs_orphan {
struct rb_node rb;
@@ -915,6 +916,7 @@ struct ubifs_orphan {
ino_t inum;
unsigned new:1;
unsigned cmt:1;
+ unsigned del:1;
};
/**