Messages in this thread |  | | Date | Fri, 1 Nov 2013 12:10:20 +0100 | From | Jean-Christophe PLAGNIOL-VILLARD <> | Subject | Re: [PATCH v2] efifb: prevent null-deref when iterating dmi_list |
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On 17:17 Thu 31 Oct , David Herrmann wrote: > Hi > > On Thu, Oct 31, 2013 at 11:45 AM, Jean-Christophe PLAGNIOL-VILLARD > <plagnioj@jcrosoft.com> wrote: > > On 18:40 Wed 02 Oct , David Herrmann wrote: > >> The dmi_list array is initialized using gnu designated initializers, and > >> therefore may contain fewer explicitly defined entries as there are > >> elements in it. This is because the enum above with M_xyz constants > >> contains more items than the designated initializer. Those elements not > >> explicitly initialized are implicitly set to 0. > >> > >> Now efifb_setup() loops through all these array elements, and performs > >> a strcmp on each item. For non explicitly initialized elements this will > >> be a null pointer: > >> > >> This patch swaps the check order in the if statement, thus checks first > >> whether dmi_list[i].base is null. > >> > >> Signed-off-by: James Bates <james.h.bates@yahoo.com> > >> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> > > > > with the simpleDRM arriving next merge I'm wondering if we need to keep it? > > SimpleDRM is not coming next merge-window. It's basically finished, > but I'm still working on the user-space side as its KMS api is highly > reduced compared to fully-featured DRM/KMS drivers. Maybe 3.13 will > work out.
do you have a git tree for the simpleDRM that I can pull? > > Anyhow, this patch is still needed as it fixes a serious bug for simplefb.
ok > > Thanks > David
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