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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> | 2021-07-20 16:21:05 +0200 |
| commit | c575c5434f2bdcff2d0574cb4b60d537216da099 (patch) | |
| tree | fad4a864f700e9d0c9871083301646e4883d560b /fs/configfs | |
| parent | a9bd58aae17ee7ba1f36b2651b246776d444ba44 (diff) | |
| download | linux-rt-c575c5434f2bdcff2d0574cb4b60d537216da099.tar.gz | |
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>
Diffstat (limited to 'fs/configfs')
| -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 896e90dc9193..71f665eb0316 100644 --- a/fs/configfs/file.c +++ b/fs/configfs/file.c @@ -496,13 +496,13 @@ 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; } |