From: Douglas Anderson <dianders@chromium.org>
Date: Tue, 30 May 2017 15:50:38 -0700
Subject: [PATCH] pstore: Fix leaked pstore_record in
pstore_get_backend_records()
References: bnc#1060662
Patch-mainline: v4.12.3
Git-commit: f6525b96dd9f68efe374e5aef864975e628de991
commit f6525b96dd9f68efe374e5aef864975e628de991 upstream.
When the "if (record->size <= 0)" test is true in
pstore_get_backend_records() it's pretty clear that nobody holds a
reference to the allocated pstore_record, yet we don't free it.
Let's free it.
Fixes: 2a2b0acf768c ("pstore: Allocate records on heap instead of stack")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
fs/pstore/platform.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index d468eec9b8a6..9defe98ff8b1 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -846,8 +846,10 @@ void pstore_get_backend_records(struct pstore_info *psi,
record->size = psi->read(record);
/* No more records left in backend? */
- if (record->size <= 0)
+ if (record->size <= 0) {
+ kfree(record);
break;
+ }
decompress_record(record);
rc = pstore_mkfile(root, record);
--
2.14.2