linux-kernel - Re: [PATCH 1/2] x86/stacktrace: do not fail when regs on stack for ORC

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Message-ID: <0dc9045b-c516-4c6e-23ab-de65c37f7a74@suse.cz>
Date:   Mon, 18 Dec 2017 07:59:15 +0100
From:   Jiri Slaby <jslaby@...e.cz>
To:     Josh Poimboeuf <jpoimboe@...hat.com>
Cc:     mingo@...hat.com, linux-kernel@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Miroslav Benes <mbenes@...e.cz>
Subject: Re: [PATCH 1/2] x86/stacktrace: do not fail when regs on stack for
 ORC

On 12/18/2017, 04:37 AM, Josh Poimboeuf wrote:
> On Thu, Dec 14, 2017 at 10:58:35PM +0100, Jiri Slaby wrote:
>>> 	return -EINVAL;
>>
>> Kthreads and idle tasks hit this error as they have no user regs on the
>> stack obviously :).
> 
> Doh, sorry, I forgot about that.

FWIW and to be complete, as Mira Benes pointed out in some other thread,
also zombies/dead tasks belong here which have emptied stack.

thanks,
-- 
js
suse labs