linux-kernel - [PATCH 4/7] usb: lh7a40x_udc: check return value of create_proc_read

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>] [day] [month] [year] [list]

Date:	Sat, 31 Jul 2010 21:39:03 +0400
From:	Kulikov Vasiliy <segooon@...il.com>
To:	kernel-janitors@...r.kernel.org
Cc:	Marc Singer <elf@...ci.com>,
	David Brownell <dbrownell@...rs.sourceforge.net>,
	Greg Kroah-Hartman <gregkh@...e.de>, Tejun Heo <tj@...nel.org>,
	linux-arm-kernel@...ts.infradead.org, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 4/7] usb: lh7a40x_udc: check return value of create_proc_read_entry()

create_proc_read_entry() may fail, if so return -ENOMEM.

Signed-off-by: Kulikov Vasiliy <segooon@...il.com>
---
 drivers/usb/gadget/lh7a40x_udc.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/lh7a40x_udc.c b/drivers/usb/gadget/lh7a40x_udc.c
index fded3fc..b04a62f 100644
--- a/drivers/usb/gadget/lh7a40x_udc.c
+++ b/drivers/usb/gadget/lh7a40x_udc.c
@@ -244,7 +244,7 @@ udc_proc_read(char *page, char **start, off_t off, int count,
 
 #else	/* !CONFIG_USB_GADGET_DEBUG_FILES */
 
-#define create_proc_files() do {} while (0)
+#define create_proc_files() ({ (void *)1; })
 #define remove_proc_files() do {} while (0)
 
 #endif	/* CONFIG_USB_GADGET_DEBUG_FILES */
@@ -2092,7 +2092,12 @@ static int lh7a40x_udc_probe(struct platform_device *pdev)
 		return -EBUSY;
 	}
 
-	create_proc_files();
+	if (create_proc_files() == NULL) {
+		DEBUG(KERN_ERR "%s: can't get irq %i, err %d\n", driver_name,
+		      IRQ_USBINTR, retval);
+		free_irq(IRQ_USBINTR, dev);
+		return -ENOMEM;
+	}
 
 	return retval;
 }
-- 
1.7.0.4

--
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/