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authorDan Carpenter <dan.carpenter@oracle.com>2014-02-18 05:33:01 +0400
committerTheodore Ts'o <tytso@mit.edu>2014-02-18 05:33:01 +0400
commit92e3b40537707001d17bbad800d150ab04e53bf4 (patch)
tree8005d10187a240409c0ce365f23f074a468a2a4d /fs/jbd2/transaction.c
parent19ea80603715d473600cd993b9987bc97d042e02 (diff)
downloadlinux-92e3b40537707001d17bbad800d150ab04e53bf4.tar.xz
jbd2: fix use after free in jbd2_journal_start_reserved()
If start_this_handle() fails then it leads to a use after free of "handle". Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/jbd2/transaction.c')
-rw-r--r--fs/jbd2/transaction.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 8360674c85bc..60bb365f54a5 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -514,11 +514,13 @@ int jbd2_journal_start_reserved(handle_t *handle, unsigned int type,
* similarly constrained call sites
*/
ret = start_this_handle(journal, handle, GFP_NOFS);
- if (ret < 0)
+ if (ret < 0) {
jbd2_journal_free_reserved(handle);
+ return ret;
+ }
handle->h_type = type;
handle->h_line_no = line_no;
- return ret;
+ return 0;
}
EXPORT_SYMBOL(jbd2_journal_start_reserved);