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Re: Sparc ASAN

From: Alexander Potapenko <glider at google dot com>
To: Konstantin Serebryany <konstantin dot s dot serebryany at gmail dot com>
Cc: ramrad01 at arm dot com, Andrew Pinski <pinskia at gmail dot com>, Peter Bergner <bergner at vnet dot ibm dot com>, David Miller <davem at davemloft dot net>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, "ebotcazou at adacore dot com" <ebotcazou at adacore dot com>, "dje dot gcc at gmail dot com" <dje dot gcc at gmail dot com>, "wmi at google dot com" <wmi at google dot com>, "dvyukov at google dot com" <dvyukov at google dot com>
Date: Thu, 22 Nov 2012 17:14:15 +0400
Subject: Re: Sparc ASAN
References: <20121120.145910.1967136900981966993.davem@davemloft.net> <20121120.212040.1628331571692592011.davem@davemloft.net> <CAGQ9bdxbCeG_NM61ZR5ezrU3Sv=hiQ49+drYP6J_4ndDX9bbZQ@mail.gmail.com> <20121121.102930.2253902210993990058.davem@davemloft.net> <CAGQ9bdyNQcfs3qrpgeWqPnxizq1wZTnM6E05YSX83nK1E819dw@mail.gmail.com> <1353513910.17833.153.camel@otta> <CAGQ9bdwFf6-OxPg1urFm_b4RuunvR-_1B2ehtZTaCFrudBdS9w@mail.gmail.com> <CA+=Sn1=d4SBQSKD_80mVxhaMUkOXO+Pzzze25tfbz1J3snaxhQ@mail.gmail.com> <50AD0BB6.6000009@arm.com> <CAGQ9bdxJtN0Q=Dg27EOKM+u_AekWpw+mnC2HtMtJqfXx+jPAXg@mail.gmail.com>

>> While trying to add support for ARM (AArch32 GNU / Linux) implementation for
>> GCC after-hours but still keep seeing failures on my chromebook running an
>> ubuntu fs on a ChrOS kernel, because the shadow memory apparently overlaps
>> with normal memory. Has anyone else hit this while porting ?
>
> I've heard someone complain about this recently.
> glider?
>
> Running asan on *huge* binaries in 32-bit address space is a challenge indeed.
> My suggestion was to link with -pie.
>
> --kcc
Yes, there were complaints about that recently: http://crbug.com/159816
-pie MAY help, but not if the program occupies too much address space.

References:
- Re: sparc bootstrap still broken
  - From: David Miller
- Sparc ASAN (was Re: sparc bootstrap still broken)
  - From: David Miller
- Re: Sparc ASAN (was Re: sparc bootstrap still broken)
  - From: Konstantin Serebryany
- Re: Sparc ASAN
  - From: David Miller
- Re: Sparc ASAN
  - From: Konstantin Serebryany
- Re: Sparc ASAN
  - From: Peter Bergner
- Re: Sparc ASAN
  - From: Konstantin Serebryany
- Re: Sparc ASAN
  - From: Andrew Pinski
- Re: Sparc ASAN
  - From: Ramana Radhakrishnan
- Re: Sparc ASAN
  - From: Konstantin Serebryany

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