linux-kernel - Re: 5.11 regression: "ia64: add support for TIF_NOTIFY

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Date:   Wed, 17 Mar 2021 18:42:06 +0100
From:   John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To:     Sergei Trofimovich <slyich@...il.com>
Cc:     Jens Axboe <axboe@...nel.dk>, linux-ia64@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: 5.11 regression: "ia64: add support for TIF_NOTIFY_SIGNAL" breaks
 ia64 boot

Hi!

On 2/23/21 8:27 PM, Sergei Trofimovich wrote:
>>> Just gave it a try and it still doesn't work.  
>>
>> Maybe your other two patches to fix the strace issues are required as well?
> 
> I'd say it's very unlikely they have any effect here. AFAIU they only amend
> ptrace() behaviour called from userspace. Failure to boot so early is probably
> way before any userspace.
> 
>> Or do you happen to have more patches in the Gentoo kernel?
> 
> Nope. It was a vanilla 5.11 release with 3 patches: 1 signal fix and
> 2 ptrace() patches.
> 
> Here are dmesg and config from my machine with successfull boot:
>     https://dev.gentoo.org/~slyfox/configs/guppy-dmesg-5.11
>     https://dev.gentoo.org/~slyfox/configs/guppy-config-5.11

Just gave it a try using this kernel configuration. It's never loading the hpsa
module for me which I find really strange. The module isn't even showing up in
the kernel message buffer.

>> [    0.036000] ERROR: Invalid distance value range                                                            
>> [    0.036000]                                                                                                
>> [    0.036000]   00 00 00 00 00 00
> 
> I don't see this string in the 5.11 kernel source. But
>    https://lore.kernel.org/lkml/161356785681.20312.13022545187499987936.tip-bot2@tip-bot2/T/
> hints it's might be something very new and you are in the
> middle of 5.12-rc1?

I'm seeing this using your exact kernel configuration.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@...ian.org
`. `'   Freie Universitaet Berlin - glaubitz@...sik.fu-berlin.de
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