linux-kernel - Re: regression: Bug 215601 - gcc segv at startup on ia64

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Date:   Sun, 20 Feb 2022 18:19:46 +0100
From:   Thorsten Leemhuis <regressions@...mhuis.info>
To:     Kees Cook <keescook@...omium.org>,
        Anthony Yznaga <anthony.yznaga@...cle.com>
Cc:     matoro_bugzilla_kernel@...oro.tk,
        Andrew Morton <akpm@...ux-foundation.org>,
        "regressions@...ts.linux.dev" <regressions@...ts.linux.dev>,
        linux-ia64@...r.kernel.org,
        Linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Alexander Viro <viro@...iv.linux.org.uk>
Subject: Re: regression: Bug 215601 - gcc segv at startup on ia64

[reply to get Anthony on board, I screwed up when copy and pasting his
email address when sending below mail; sorry for the noise!]

On 20.02.22 18:12, Thorsten Leemhuis wrote:
> Hi, this is your Linux kernel regression tracker.
> 
> I noticed a regression report in bugzilla.kernel.org that afaics nobody
> acted upon since it was reported about a week ago, that's why I'm hereby
> forwarding it to the lists and the relevant people. To quote
> https://bugzilla.kernel.org/show_bug.cgi?id=215601 :
> 
>> On ia64, after 5f501d555653f8968011a1e65ebb121c8b43c144, the gcc
>> binary crashes with SIGSEGV at startup (i.e., during ELF loading).
>> Only gcc exhibits the crash (including g++, etc), other toolchain
>> components (such as ld, ldd, etc) do not, and neither does any other
>> binary from what I can tell.  I also haven't observed the issue on
>> any other architecture.
>>
>> Reverting this commit resolves the issue up to and including git tip,
>> with no (visible) issues.
>>
>> Hardware:  HP Integrity rx2800 i2 Kernel config attached.
> 
> Could somebody take a look into this? Or was this discussed somewhere
> else already? Or even fixed?
> 
> Anyway, to get this tracked:
> 
> #regzbot introduced: 5f501d555653f8968011a1e65ebb121c8b43c144
> #regzbot from: matoro <matoro_bugzilla_kernel@...oro.tk>
> #regzbot title: gcc segv at startup on ia64
> #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=215601
> 
> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
> 
> P.S.: As the Linux kernel's regression tracker I'm getting a lot of
> reports on my table. I can only look briefly into most of them and lack
> knowledge about most of the areas they concern. I thus unfortunately
> will sometimes get things wrong or miss something important. I hope
> that's not the case here; if you think it is, don't hesitate to tell me
> in a public reply, it's in everyone's interest to set the public record
> straight.
>