linux/fs/f2fs/segment.c
Jan Kara 8744de7f08 f2fs: avoid returning uninitialized value to userspace from f2fs_trim_fs()
commit 9bd27ae4aa upstream.

If user specifies too low end sector for trimming, f2fs_trim_fs() will
use uninitialized value as a number of trimmed blocks and returns it to
userspace. Initialize number of trimmed blocks early to avoid the
problem.

Coverity-id: 1248809
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-08 10:30:17 -08:00

2226 lines
57 KiB