From: Rich Felker <dalias@libc.org>
To: Alexander Monakov <amonakov@ispras.ru>
Cc: musl@lists.openwall.com, Andrew Rogers <andrew.rogerstech@gmail.com>
Subject: Re: [musl] Potential DL_NOMMU_SUPPORT bug.
Date: Sun, 24 Jan 2021 13:10:36 -0500 [thread overview]
Message-ID: <20210124181036.GS23432@brightrain.aerifal.cx> (raw)
In-Reply-To: <alpine.LNX.2.20.13.2101241856430.31613@monopod.intra.ispras.ru>
On Sun, Jan 24, 2021 at 06:58:10PM +0300, Alexander Monakov wrote:
> On Sun, 24 Jan 2021, Rich Felker wrote:
>
> > Could you clarify what you're trying to do? Android devices are not
> > nommu and loading the binary from SD card vs elsewhere should not be
> > relevant to mmap failure here.
>
> sdcard [pseudo-]partition is usually mounted noexec, so mmap with PROT_EXEC
> should fail.
Uhg, that makes no sense. Does it enforce that even for MAP_PRIVATE,
which should semantically be equivalent to just making anon memory
with the requested permissions and copying the file contents into it??
Rich
next prev parent reply other threads:[~2021-01-24 18:10 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-23 6:47 Andrew Rogers
2021-01-24 15:40 ` Rich Felker
2021-01-24 15:58 ` Alexander Monakov
2021-01-24 18:10 ` Rich Felker [this message]
2021-01-24 18:48 ` Alexander Monakov
2021-01-24 18:55 ` Rich Felker
2021-01-30 17:44 ` Andrew Rogers
2021-01-30 19:01 ` Rich Felker
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