From 17a05cca99d952f5b4766fa48a2703548966636a Mon Sep 17 00:00:00 2001 From: Christian Engelmayer Date: Sun, 19 Jan 2014 02:08:49 +0100 Subject: [PATCH] block: Fix memory leak in rw_copy_check_uvector() handling Fix a memory leak in the error handling path of function sg_io() that is used during the processing of scsi ioctl. Memory already allocated by rw_copy_check_uvector() needs to be freed correctly. Detected by Coverity: CID 1128953. Signed-off-by: Christian Engelmayer Signed-off-by: Jens Axboe --- block/scsi_ioctl.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c index 625e3e471d65..26487972ac54 100644 --- a/block/scsi_ioctl.c +++ b/block/scsi_ioctl.c @@ -323,12 +323,14 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk, if (hdr->iovec_count) { size_t iov_data_len; - struct iovec *iov; + struct iovec *iov = NULL; ret = rw_copy_check_uvector(-1, hdr->dxferp, hdr->iovec_count, 0, NULL, &iov); - if (ret < 0) + if (ret < 0) { + kfree(iov); goto out; + } iov_data_len = ret; ret = 0; -- 2.39.2