From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
To: Topi Miettinen <toiwoton@gmail.com>, libc-alpha@sourceware.org
Subject: Re: [PATCH 1/3] csu: randomize location of TCB
Date: Wed, 25 Nov 2020 10:18:54 -0300 [thread overview]
Message-ID: <06c7e1b1-d1d0-8908-1b71-423df90137e7@linaro.org> (raw)
In-Reply-To: <20201125113632.6486-2-toiwoton@gmail.com>
On 25/11/2020 08:36, Topi Miettinen via Libc-alpha wrote:
> Use mmap() for allocating TCB except if instructed by tunable
> glibc.malloc.use_sbrk. This makes the location of TCB random instead
> of always staying predictably next to data segment. When using mmap(),
> improve the logic so that allocation of TCB can be assumed to fail
> insted of segfaulting.
>
> --
> v2: introduce a tunable to use sbrk()
>
> Signed-off-by: Topi Miettinen <toiwoton@gmail.com>
Could you address the points I raised on your first version [1]
first?
[1] https://sourceware.org/pipermail/libc-alpha/2020-November/119988.html
next prev parent reply other threads:[~2020-11-25 13:18 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-25 11:36 [PATCH 0/3] Improved ASLR Topi Miettinen
2020-11-25 11:36 ` [PATCH 1/3] csu: randomize location of TCB Topi Miettinen
2020-11-25 13:18 ` Adhemerval Zanella [this message]
2020-11-25 13:43 ` Topi Miettinen
2020-11-25 17:49 ` Topi Miettinen
2020-11-25 11:36 ` [PATCH 2/3] malloc: use mmap() to improve ASLR Topi Miettinen
2020-11-25 11:36 ` [PATCH 3/3] dl-sysdep: disable remaining calls to sbrk() Topi Miettinen
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