Re: [gentoo-user] libv8 segfault

[Michael Mol <mikemol@gmail.com>]

On Wed, Jan 23, 2013 at 10:52 AM, Nilesh Govindrajan <me@nileshgr.com> wrote:
> I tried compiling all versions of chromium (-O3, but it always worked
> previously) & v8 (tried -O3 & -O2 too)
> but it always segfaults when I try to open the settings page.
>
> CrRendererMain[6059]: segfault at 500000000 ip 00007f0d0834970c sp
> 00007fff71d91a60 error 4 in libv8.so.3.15.11[7f0d08181000+45d000]
>
> Quite interestingly, the binary version of chrome works without hitches,
> which I don't want to run because I'm a little paranoid about it ;-)
> And that also means that there is no hardware fault.
>
> dev-lang/v8-3.15.11.5
> www-client/chromium-24.0.1312.56 (I'm at present using the google chrome
> beta, but chromium 25 doesn't work either).
>
> Flags:
> CFLAGS="-O3 -march=core2 -mtune=core2 -msse -msse2 -mssse3 -mmmx -pipe"
> CXXFLAGS="${CFLAGS}"
> LDFLAGS="-Wl,-O1 -Wl,--as-needed"
>
> Just replace that O3 with O2 for v8.
>
> Anybody knows what's going on here?

What USE flags are enabled for chromium? You haven't specified that
you're using the custom-cflags USE flag, so whatever's in your global
CFLAGS setting is largely irrelevant.

Also, you don't need to specify --as-needed; that's default, now. I
don't know what those other flags are doing.

Start with revdep-rebuild, see if that fixes it. If not, you probably
ought to re-emerge chromium and its direct dependencies. Given your
recent experience with overclocking and the rather correct warnings
about silent data corruption, you may need to re-emerge a lot more
than that.

--
:wq