Date: Sun, 24 Jan 2021 13:10:36 -0500 From: Rich Felker <dalias@...c.org> To: Alexander Monakov <amonakov@...ras.ru> Cc: musl@...ts.openwall.com, Andrew Rogers <andrew.rogerstech@...il.com> Subject: Re: Potential DL_NOMMU_SUPPORT bug. 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
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