[tor-qa] Introducing hardened builds for 64bit Linux

[Georg Koppen]

anonym:
> Georg Koppen:
>> Hi,
>>
>> we are about to start a hardened Tor Browser series and the first
>> nightly for it is ready to get tested (on 64bit Linux systems):
>>
>> https://people.torproject.org/~gk/testbuilds/tor-browser-linux64-tbb-nightly-hardened_ALL.tar.xz
>> https://people.torproject.org/~gk/testbuilds/tor-browser-linux64-tbb-nightly-hardened_ALL.tar.xz.asc
> 
> Very nice!
> 
> Are there any plans on a 32-bit Linux build soon? Nightly? We're quite
> interested trying this out in Tails which, sadly, only has a 32-bit user
> land (although it ships a 64-bit kernel, too).

Not at the moment.

> Any way I tried it briefly on Debian Jessie with much success:

Thanks!

> * Watching cats videos on YouTube in 720p without stuttering: Check! :)
> * Done!
> 
> Seriously, though, I subjectively did notice some slowdowns on bloaty,
> ad-heavy sites (think: news papers). I guess that is to be expected.
> Also, when I exited I got:
> 
>     ASAN:SIGSEGV
>     =================================================================
>     ==8134==ERROR: AddressSanitizer: SEGV on unknown address
> 0x000000000000 (pc 0x000000000000 bp 0x7ff4e4eeeffa sp 0x7ffdad284918 T0)
>     ==8134==Hint: pc points to the zero page.
> 
>     AddressSanitizer can not provide additional info.
> 
> and then ~a minute of nothing with the process still running, and then:
> 
>     ASAN:SIGSEGV
>     ==8294==AddressSanitizer: while reporting a bug found another one.
> Ignoring.
> 
> and then ~another minute of nothing, and then the process exited (code =
> 1). I can reproduce this every time.

Did you start the bundle via the start-tor-browser.desktop thing/the
start-tor-browser script shipped with it or by other means? If the
former any ideas on how to reproduce your crashes?

Georg



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