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| author | Chung-Chiang Cheng <shepjeng@gmail.com> | 2021-06-18 15:59:25 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-14 16:53:46 +0200 |
| commit | f0acb12b986658e1064bdd46d6d0b9807aba7b33 (patch) | |
| tree | 4f8e7a90bae8421dfa5b663d73e37e39289e3bc3 | |
| parent | 2993c1f9d7b9fc74c1d4c40c4e16122c44ebbe52 (diff) | |
| download | linux-f0acb12b986658e1064bdd46d6d0b9807aba7b33.tar.gz linux-f0acb12b986658e1064bdd46d6d0b9807aba7b33.tar.bz2 linux-f0acb12b986658e1064bdd46d6d0b9807aba7b33.zip | |
configfs: fix memleak in configfs_release_bin_file
[ Upstream commit 3c252b087de08d3cb32468b54a158bd7ad0ae2f7 ]
When reading binary attributes in progress, buffer->bin_buffer is setup in
configfs_read_bin_file() but never freed.
Fixes: 03607ace807b4 ("configfs: implement binary attributes")
Signed-off-by: Chung-Chiang Cheng <cccheng@synology.com>
[hch: move the vfree rather than duplicating it]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | fs/configfs/file.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/configfs/file.c b/fs/configfs/file.c index 84b4d58fc65f..66fae1853d99 100644 --- a/fs/configfs/file.c +++ b/fs/configfs/file.c @@ -482,13 +482,13 @@ static int configfs_release_bin_file(struct inode *inode, struct file *file) buffer->bin_buffer_size); } up_read(&frag->frag_sem); - /* vfree on NULL is safe */ - vfree(buffer->bin_buffer); - buffer->bin_buffer = NULL; - buffer->bin_buffer_size = 0; - buffer->needs_read_fill = 1; } + vfree(buffer->bin_buffer); + buffer->bin_buffer = NULL; + buffer->bin_buffer_size = 0; + buffer->needs_read_fill = 1; + configfs_release(inode, file); return 0; } |