From: Chung-Chiang Cheng shepjeng@gmail.com
[ 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 --- fs/configfs/file.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/configfs/file.c b/fs/configfs/file.c index e26060dae70a..b4b0fbabd62e 100644 --- a/fs/configfs/file.c +++ b/fs/configfs/file.c @@ -480,13 +480,13 @@ 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; }