From: Filipe Manana Date: Tue, 20 Dec 2022 11:13:33 +0000 (+0000) Subject: btrfs: fix fscrypt name leak after failure to join log transaction X-Git-Url: https://git.baikalelectronics.ru/?a=commitdiff_plain;h=6cd57f5c779578c2c41f6ab3dedd71aaddca4d9f;p=kernel.git btrfs: fix fscrypt name leak after failure to join log transaction commit fee4c19937439693f2420a916169d08e88576e8e upstream. When logging a new name, we don't expect to fail joining a log transaction since we know at least one of the inodes was logged before in the current transaction. However if we fail for some unexpected reason, we end up not freeing the fscrypt name we previously allocated. So fix that by freeing the name in case we failed to join a log transaction. Fixes: ab3c5c18e8fa ("btrfs: setup qstr from dentrys using fscrypt helper") Reviewed-by: Sweet Tea Dorminy Signed-off-by: Filipe Manana Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Greg Kroah-Hartman --- diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index ab7893debf07a..c03ff6a5a7f6b 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -7491,8 +7491,11 @@ void btrfs_log_new_name(struct btrfs_trans_handle *trans, * not fail, but if it does, it's not serious, just bail out and * mark the log for a full commit. */ - if (WARN_ON_ONCE(ret < 0)) + if (WARN_ON_ONCE(ret < 0)) { + fscrypt_free_filename(&fname); goto out; + } + log_pinned = true; path = btrfs_alloc_path();