Messages in this thread | | | Date | Thu, 20 Nov 2008 08:58:44 -0800 | From | Arjan van de Ven <> | Subject | Re: vm86 segfaults with NX bit |
| |
On Thu, 20 Nov 2008 16:39:06 +0100 Takashi Iwai <tiwai@suse.de> wrote:
> Hi, > > X guys reported that VESA driver segfaults in vm86 mode with a kernel > with CONFIG_X86_PAE, and it turned to be the NX bit. See Novell > bugzilla #443440: > https://bugzilla.novell.com/show_bug.cgi?id=443440 > > I can confirm that the latest 2.6.28-rc still causes the same problem, > and it disappears when booted with noexec=off option. > > Also, when NX bit is reset for the first 1MB (or smaller) in > do_sys_vm86(), it also works as expected. But I have little clue > where to restore the bit again. > > Any good suggestions / solutions? >
did the code that mapped this memory setup use PROT_EXEC ?
-- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org
| |