UBIFS: fix memory leak on error path

commit 812eb258311f89bcd664a34a620f249d54a2cd83 upstream.

UBIFS leaks memory on error path in 'ubifs_jnl_update()' in case of write
failure because it forgets to free the 'struct ubifs_dent_node *dent' object.
Although the object is small, the alignment can make it large - e.g., 2KiB
if the min. I/O unit is 2KiB.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index aed25e864227d83b1e200021014765a913d16518..e5cb2ce7bf089274aa53f6528639b4de7440267a 100644 (file)
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -666,6 +666,7 @@ out_free:
 
 out_release:
        release_head(c, BASEHD);
+       kfree(dent);
 out_ro:
        ubifs_ro_mode(c, err);
        if (last_reference)