[PATCH] cxl: Fix error path on bad ioctl
Frederic Barrat
fbarrat at linux.vnet.ibm.com
Sat Jun 3 02:15:23 AEST 2017
Fix error path if we can't copy user structure on
CXL_IOCTL_START_WORK ioctl.
Signed-off-by: Frederic Barrat <fbarrat at linux.vnet.ibm.com>
Cc: stable at vger.kernel.org
---
drivers/misc/cxl/file.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/misc/cxl/file.c b/drivers/misc/cxl/file.c
index 17b433f1ce23..caa44adfa60e 100644
--- a/drivers/misc/cxl/file.c
+++ b/drivers/misc/cxl/file.c
@@ -160,10 +160,8 @@ static long afu_ioctl_start_work(struct cxl_context *ctx,
/* Do this outside the status_mutex to avoid a circular dependency with
* the locking in cxl_mmap_fault() */
if (copy_from_user(&work, uwork,
- sizeof(struct cxl_ioctl_start_work))) {
- rc = -EFAULT;
- goto out;
- }
+ sizeof(struct cxl_ioctl_start_work)))
+ return -EFAULT;
mutex_lock(&ctx->status_mutex);
if (ctx->status != OPENED) {
--
2.11.0
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