Re: 32-bit segfaults on x86_64 in recent mm kernels

[Andy Lutomirski]

Andy Lutomirski wrote:
> I've had segfaults in 32-bit emulation in recent (and not-so-recent) -mm
> kernels on x86_64.
>
> 2.6.7-gentoo-r11 and 2.6.10-rc1 both work fine (even wine works for the 
> most part).
>
> 2.6.9-rc3-mm3 can't run wine -- it always segfaults.  Other apps seem OK.
>
> 2.6.10-rc1-mm1 can't run anything -- even this segfaults (compiled with 
> both
> 'gcc -o foo -m32 foo.c' and 'gcc -o foo -m32 -Wl,-zexecstack foo.c'):
>
> #include <stdio.h>
>
> int main()
> {
>        printf("Hello %d\n", (int)(sizeof(int*)));
>        return 0;
> }
>
> Sorry, no debug info, since debugging tools segfault too.
>
> This is my syslog for 2.6.10-rc1-mm1, with some userspace stuff stripped:

s/2.6.10-rc1-mm1/2.6.10-rc1-mm3/g, obviously.

> Nov  7 08:37:41 luto Linux version 2.6.10-rc1-mm3 

etc.

--Andy
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