From: Jean Delvare Date: Wed, 26 Apr 2006 21:00:16 +0000 (+0200) Subject: [PATCH] scx200_acb: Fix resource name use after free X-Git-Tag: v2.6.17-rc5~164^2~1 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b33d0798e6cfae1fcee75afc808fe5690a48a814;p=linux-2.6 [PATCH] scx200_acb: Fix resource name use after free We can't pass a string on the stack to request_region. As soon as we leave the function that stack is gone and the string is lost. Let's use the same string we identify the i2c_adapter with instead, it's more simple, more consistent, and just works. This is the second half of fix to bug #6445. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c index f2dae68311..42e4e00d6c 100644 --- a/drivers/i2c/busses/scx200_acb.c +++ b/drivers/i2c/busses/scx200_acb.c @@ -415,7 +415,6 @@ static int __init scx200_acb_create(const char *text, int base, int index) struct scx200_acb_iface *iface; struct i2c_adapter *adapter; int rc; - char description[64]; iface = kzalloc(sizeof(*iface), GFP_KERNEL); if (!iface) { @@ -434,10 +433,7 @@ static int __init scx200_acb_create(const char *text, int base, int index) mutex_init(&iface->mutex); - snprintf(description, sizeof(description), "%s ACCESS.bus [%s]", - text, adapter->name); - - if (request_region(base, 8, description) == 0) { + if (!request_region(base, 8, adapter->name)) { printk(KERN_ERR NAME ": can't allocate io 0x%x-0x%x\n", base, base + 8-1); rc = -EBUSY;