diff options
| author |   Chengguang Xu <cgxu519@gmail.com> | 2019-05-10 21:15:47 -0400 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2019-05-10 21:15:47 -0400 |
| commit | 0d52154bb0a700abb459a2cbce0a30fc2549b67e (patch) | |
| tree | 77f16584704ea8a684a8f0bd70bc76bfd557e9a9 /fs/jbd2/transaction.c | |
| parent | ext4: zero out the unused memory region in the extent tree block (diff) | |
| download | wireguard-linux-0d52154bb0a700abb459a2cbce0a30fc2549b67e.tar.xz wireguard-linux-0d52154bb0a700abb459a2cbce0a30fc2549b67e.zip | |
jbd2: fix potential double free
When failing from creating cache jbd2_inode_cache, we will destroy the
previously created cache jbd2_handle_cache twice. This patch fixes
this by moving each cache initialization/destruction to its own
separate, individual function.
Signed-off-by: Chengguang Xu <cgxu519@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Diffstat (limited to 'fs/jbd2/transaction.c')
| -rw-r--r-- | fs/jbd2/transaction.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index f940d31c2adc..8ca4fddc705f 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -42,9 +42,11 @@ int __init jbd2_journal_init_transaction_cache(void) 0, SLAB_HWCACHE_ALIGN|SLAB_TEMPORARY, NULL); - if (transaction_cache) - return 0; - return -ENOMEM; + if (!transaction_cache) { + pr_emerg("JBD2: failed to create transaction cache\n"); + return -ENOMEM; + } + return 0; } void jbd2_journal_destroy_transaction_cache(void) |