From: Hangyu Hua <hbh25y@xxxxxxxxx>
[ Upstream commit c3b69ba5114c860d730870c03ab4ee45276e5e35 ]
eventfd_ctx_put need to be called to put the refcount that gotten by
eventfd_ctx_fdget when ocxl_irq_set_handler fails.
Fixes: 060146614643 ("ocxl: move event_fd handling to frontend")
Acked-by: Frederic Barrat <fbarrat@xxxxxxxxxxxxx>
Signed-off-by: Hangyu Hua <hbh25y@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220824082600.36159-1-hbh25y@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/misc/ocxl/file.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/misc/ocxl/file.c b/drivers/misc/ocxl/file.c
index c742ab02ae18..e094809b54ff 100644
--- a/drivers/misc/ocxl/file.c
+++ b/drivers/misc/ocxl/file.c
@@ -259,6 +259,8 @@ static long afu_ioctl(struct file *file, unsigned int cmd,
if (IS_ERR(ev_ctx))
return PTR_ERR(ev_ctx);
rc = ocxl_irq_set_handler(ctx, irq_id, irq_handler, irq_free, ev_ctx);
+ if (rc)
+ eventfd_ctx_put(ev_ctx);
break;
case OCXL_IOCTL_GET_METADATA:
--
2.35.1
