From: Florian Weimer <fweimer@redhat.com>
To: Szabolcs Nagy <szabolcs.nagy@arm.com>
Cc: Adhemerval Zanella <adhemerval.zanella@linaro.org>,
libc-alpha@sourceware.org
Subject: Re: [PATCH v2 5/5] Linux: Consolidate auxiliary vector parsing
Date: Fri, 11 Feb 2022 14:49:54 +0100 [thread overview]
Message-ID: <87a6exv7gd.fsf@oldenburg.str.redhat.com> (raw)
In-Reply-To: <20220211132419.GC2692478@arm.com> (Szabolcs Nagy's message of "Fri, 11 Feb 2022 13:24:19 +0000")
* Szabolcs Nagy:
> The 02/11/2022 09:47, Adhemerval Zanella wrote:
>> On 11/02/2022 09:31, Szabolcs Nagy via Libc-alpha wrote:
>> > The 02/03/2022 12:08, Florian Weimer via Libc-alpha wrote
>> >> + dl_parse_auxv_t auxv_values = { 0, };
>> >> + _dl_parse_auxv (av, auxv_values);
>> >
>> > this seems to use memset now on aarch64 before irelative
>> > relocs are resolved in static binaries.
>> >
>> > which causes infinite loops in the iplt (i've also seen
>> > segfaults in the build log).
>> >
>> > i wonder what is a clean fix...
>> >
>>
>> Maybe add inhibit_loop_to_libcall to avoid the memset call.
>
> does not work for me..
> happens at -O0 too
> https://godbolt.org/z/W9r3nffYd
Seems to happen with -fno-builtin or -ffreestanding as well. It's a GCC
bug, but I'll investigating working around it.
Thanks,
Florian
next prev parent reply other threads:[~2022-02-11 13:50 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-03 11:08 [PATCH v2 0/5] Linux: Auxiliary vector parsing cleanups Florian Weimer
2022-02-03 11:08 ` [PATCH v2 1/5] elf: Merge dl-sysdep.c into the Linux version Florian Weimer
2022-02-08 20:09 ` Adhemerval Zanella
2022-02-03 11:08 ` [PATCH v2 2/5] Linux: Remove HAVE_AUX_SECURE, HAVE_AUX_XID, HAVE_AUX_PAGESIZE Florian Weimer
2022-02-08 20:11 ` Adhemerval Zanella
2022-02-03 11:08 ` [PATCH v2 3/5] Linux: Remove DL_FIND_ARG_COMPONENTS Florian Weimer
2022-02-08 20:12 ` Adhemerval Zanella
2022-02-03 11:08 ` [PATCH v2 4/5] Linux: Assume that NEED_DL_SYSINFO_DSO is always defined Florian Weimer
2022-02-08 20:13 ` Adhemerval Zanella
2022-02-03 11:08 ` [PATCH v2 5/5] Linux: Consolidate auxiliary vector parsing Florian Weimer
2022-02-08 20:19 ` Adhemerval Zanella
2022-02-08 20:34 ` Florian Weimer
2022-02-08 22:57 ` Adhemerval Zanella
2022-02-10 10:54 ` Florian Weimer
2022-02-10 11:29 ` Adhemerval Zanella
2022-02-10 11:31 ` Florian Weimer
2022-02-10 11:40 ` Adhemerval Zanella
2022-02-10 11:46 ` Adhemerval Zanella
2022-02-11 12:31 ` Szabolcs Nagy
2022-02-11 12:47 ` Adhemerval Zanella
2022-02-11 13:24 ` Szabolcs Nagy
2022-02-11 13:48 ` Adhemerval Zanella
2022-02-11 14:42 ` H.J. Lu
2022-02-11 14:56 ` Florian Weimer
2022-02-11 13:49 ` Florian Weimer [this message]
2022-02-11 14:17 ` Adhemerval Zanella
2022-02-11 14:29 ` Szabolcs Nagy
2022-02-11 18:15 ` Adhemerval Zanella
2022-02-11 17:32 ` Florian Weimer
2022-02-11 17:49 ` Szabolcs Nagy
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