Re: [patch] i386, vdso=[0|1] boot option and /proc/sys/vm/vdso_enabled

[Ingo Molnar]

* Rusty Russell <rusty@xxxxxxxxxxxxxxx> wrote:

> But it turns out that this is a known problem with FC1's glibc and the 
> exec-shield patches (google for FC1 glibc vdso). [..]

no, i think that conclusion is wrong. The FC1 glibc and vdso problems 
*when mixing a FC2 kernel with a FC1 glibc* were due to exec-shield 
enforcing non-exec for the vdso.

> [...] When Ingo and Arjan convinced me to push their code from 
> exec-shield, they conveniently didn't mention this.

this bug has nothing to do with nonexec restrictions. [ Also, this all 
was _years_ and hundreds of bugs ago, when upstream's position was still 
a cocky "who the hell needs protection against overflows" and "go away 
with this non-exec crap" so we were pretty much alone trying to 
introduce those features. So any suggestion of intention on our part 
would be quite unfair. ]

	Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/