linux-kernel - Re: [PATCH] x86/retpoline,kprobes: Fix "Fix position of thunk sections with CONFIG_LTO

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Message-ID: <20230804082853.GM212435@hirez.programming.kicks-ass.net>
Date:   Fri, 4 Aug 2023 10:28:53 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Andrew Cooper <andrew.cooper3@...rix.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Petr Pavlu <petr.pavlu@...e.com>,
        Josh Poimboeuf <jpoimboe@...nel.org>
Subject: Re: [PATCH] x86/retpoline,kprobes: Fix "Fix position of thunk
 sections with CONFIG_LTO_CLANG"

On Fri, Aug 04, 2023 at 12:03:23AM +0100, Andrew Cooper wrote:
> Lets hope there are no .text..__x86womble sections around.
> 
> Fixes: 973ab2d61f33 ("x86/retpoline,kprobes: Fix position of thunk sections with CONFIG_LTO_CLANG")
> Signed-off-by: Andrew Cooper <andrew.cooper3@...rix.com>
> ---
> CC: Petr Pavlu <petr.pavlu@...e.com>
> CC: Peter Zijlstra (Intel) <peterz@...radead.org>
> CC: Josh Poimboeuf <jpoimboe@...nel.org>
> CC: linux-kernel@...r.kernel.org
> 
> Alternatively,
> 
> int strstarts(const char *s1, const char *s2)
> {
>         return strncmp(s1, s2, strlen(s2));
> }

Durr, I hate C ;-/ And yes, we have a ton of it, lemme try that
strstarts thing.