Re: [PATCH] PATCH: ibm hot plug driver fix

Arjan van de Ven (arjanv@redhat.com)
30 Apr 2003 14:07:08 +0200


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On Tue, 2003-04-01 at 21:30, Linux Kernel Mailing List wrote:
> # This patch includes the following deltas:
> # ChangeSet 1.1044 -> 1.1045=20
> # drivers/hotplug/ibmphp_ebda.c 1.6 -> 1.7 =20
> #
>=20
> ibmphp_ebda.c | 25 ++++++++++++++++++++++---
> 1 files changed, 22 insertions(+), 3 deletions(-)
>=20
>=20
> diff -Nru a/drivers/hotplug/ibmphp_ebda.c b/drivers/hotplug/ibmphp_ebda.c
> --- a/drivers/hotplug/ibmphp_ebda.c Tue Apr 1 13:05:41 2003
> +++ b/drivers/hotplug/ibmphp_ebda.c Tue Apr 1 13:05:41 2003

> @@ -608,13 +608,20 @@
> return str;
> default: =09
> //2 digits number
> + str1 =3D (char *) kmalloc (2, GFP_KERNEL);
> + if (!str1) {
> + break;
> + }
> + memset (str, 0, 3);
> *str1 =3D (char)(bit + 48);
> strncpy (str, str1, 1);
> memset (str1, 0, 3);
> *str1 =3D (char)((var % 10) + 48);
> strcat (str, str1);
> + kfree(str1);
> return str;
> - }=09
> + }
> + kfree(str);
> return NULL;=09
> }

ehm I'd suggest backing out this change. Not only do we have snprintf
nowadays, it also corrupts memory by memsetting stuff bigger than it
allocated....

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