Date: Fri, 2 Nov 2018 17:51:25 -0700 From: Mark Millard <marklmi26-fbsd@yahoo.com> To: Konstantin Belousov <kostikbel@gmail.com> Cc: svn-src-head@freebsd.org, Alexander Richardson <arichardson@freebsd.org> Subject: Re: svn commit: r339876 - head/libexec/rtld-elf Message-ID: <34554290-D26E-4FED-A598-4FB3E313EA92@yahoo.com> In-Reply-To: <20181102185014.GP5335@kib.kiev.ua> References: <8E5A5F3A-F1A7-4702-A2F7-65D74CC5B2E5@yahoo.com> <20181102004101.GI5335@kib.kiev.ua> <E44F5772-1F8A-40B8-9C4E-B8362B768F37@yahoo.com> <003A49D7-6E8B-4775-A70B-E0EB44505D4B@yahoo.com> <20181102113827.GM5335@kib.kiev.ua> <7B29A4C8-228D-41CB-B594-98DFA456E9C8@yahoo.com> <20181102155234.GN5335@kib.kiev.ua> <E93B3880-281E-482C-9DA7-851398543B97@yahoo.com> <20181102185014.GP5335@kib.kiev.ua>
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On 2018-Nov-2, at 11:50 AM, Konstantin Belousov <kostikbel at gmail.com> = wrote: > On Fri, Nov 02, 2018 at 10:38:08AM -0700, Mark Millard wrote: >> . . . >=20 > There seems to be an issue with the direct execution mode on ppc. > Even otherwise working ld-elf.so.1 segfaults if I try to use it as > standalone binary. >=20 > But if I specify patched ld-elf.so.1 as the interpreter for some = program, > using 'cc -Wl,-I,<path>/ld-elf.so.1' it works. So I see there two = bugs, > one is regression due to textsize calculation, which should be fixed = by > my patch. Another is the direct exec problem. My head -r339076 based powerpc64 and armv7 contexts also fail for: # /libexec/ld-elf.so.1 /bin/ls The armv7 (a Cortext-A7 context) is interestingly different in how it fails: # /libexec/ld-elf.so.1 /bin/ls ld-elf.so.1: /bin/ls: mmap of entire address space failed: Cannot = allocate memory My aarch64 context (a Cortext-A53 context) had no problem. (All 3 examples are without any of the the recent updates or patches to ld-elf.so.1 source code.) =3D=3D=3D Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)
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