diff mbox series

[5.4,84/98] usb: gadget: Fix memleak in gadgetfs_fill_super

Message ID 20201201084659.164581499@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH Dec. 1, 2020, 8:54 a.m. UTC 
From: Zhang Qilong <zhangqilong3@huawei.com>

commit 87bed3d7d26c974948a3d6e7176f304b2d41272b upstream.

usb_get_gadget_udc_name will alloc memory for CHIP
in "Enomem" branch. we should free it before error
returns to prevent memleak.

Fixes: 175f712119c57 ("usb: gadget: provide interface for legacy gadgets to get UDC name")
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201117021629.1470544-3-zhangqilong3@huawei.com
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/gadget/legacy/inode.c |    3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -2040,6 +2040,9 @@  gadgetfs_fill_super (struct super_block
 	return 0;
 
 Enomem:
+	kfree(CHIP);
+	CHIP = NULL;
+
 	return -ENOMEM;
 }