linux-kernel - [PATCH v2 7/7] usb: gadget: gr_udc: Use GFP_ATOMIC when allocating under held spinlock

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1396347317-3861-1-git-send-email-andreas@gaisler.com>
Date:	Tue,  1 Apr 2014 12:15:17 +0200
From:	Andreas Larsson <andreas@...sler.com>
To:	Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Mark Rutland <mark.rutland@....com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, software@...sler.com
Subject: [PATCH v2 7/7] usb: gadget: gr_udc: Use GFP_ATOMIC when allocating under held spinlock

As gr_ep_init must be called with dev->lock held, GFP_KERNEL must not be used.

Reported-by: Dan Carpenter <dan.carpenter@...cle.com>

Signed-off-by: Andreas Larsson <andreas@...sler.com>
---
Differences since v1: Fixed typo in commit message
 drivers/usb/gadget/gr_udc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/gr_udc.c b/drivers/usb/gadget/gr_udc.c
index 72458be..4966971 100644
--- a/drivers/usb/gadget/gr_udc.c
+++ b/drivers/usb/gadget/gr_udc.c
@@ -1990,8 +1990,8 @@ static int gr_ep_init(struct gr_udc *dev, int num, int is_in, u32 maxplimit)
 	INIT_LIST_HEAD(&ep->queue);
 
 	if (num == 0) {
-		_req = gr_alloc_request(&ep->ep, GFP_KERNEL);
-		buf = devm_kzalloc(dev->dev, PAGE_SIZE, GFP_DMA | GFP_KERNEL);
+		_req = gr_alloc_request(&ep->ep, GFP_ATOMIC);
+		buf = devm_kzalloc(dev->dev, PAGE_SIZE, GFP_DMA | GFP_ATOMIC);
 		if (!_req || !buf) {
 			/* possible _req freed by gr_probe via gr_remove */
 			return -ENOMEM;
-- 
1.7.10.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/