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 <cengelma@gmx.at> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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1 changed files with 4 additions and 2 deletions
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@ -323,12 +323,14 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
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if (hdr->iovec_count) {
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size_t iov_data_len;
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struct iovec *iov;
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struct iovec *iov = NULL;
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ret = rw_copy_check_uvector(-1, hdr->dxferp, hdr->iovec_count,
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0, NULL, &iov);
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if (ret < 0)
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if (ret < 0) {
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kfree(iov);
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goto out;
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}
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iov_data_len = ret;
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ret = 0;
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