From: Hangyu Hua <hbh25y@gmail.com>
To: fbarrat@linux.ibm.com, ajd@linux.ibm.com, arnd@arndb.de,
gregkh@linuxfoundation.org, alastair@d-silva.org,
mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
Hangyu Hua <hbh25y@gmail.com>
Subject: [PATCH] misc: ocxl: fix possible refcount leak in afu_ioctl()
Date: Wed, 24 Aug 2022 16:26:00 +0800 [thread overview]
Message-ID: <20220824082600.36159-1-hbh25y@gmail.com> (raw)
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")
Signed-off-by: Hangyu Hua <hbh25y@gmail.com>
---
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 6777c419a8da..d46dba2df5a1 100644
--- a/drivers/misc/ocxl/file.c
+++ b/drivers/misc/ocxl/file.c
@@ -257,6 +257,8 @@ 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:
--
2.25.1
next reply other threads:[~2022-08-24 8:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-24 8:26 Hangyu Hua [this message]
2022-08-24 9:42 ` [PATCH] misc: ocxl: fix possible refcount leak in afu_ioctl() Frederic Barrat
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