linux-kernel - Re: [PATCH] arm64: kasan: fix include error in MTE functions

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Date:   Wed, 9 Mar 2022 11:39:35 +0000
From:   Will Deacon <will@...nel.org>
To:     Paul Semel <semelpaul@...il.com>
Cc:     linux-kernel@...r.kernel.org, andreyknvl@...gle.com,
        vincenzo.frascino@....com, catalin.marinas@....com,
        linux-arm-kernel@...ts.infradead.org, paul.semel@...adoghq.com
Subject: Re: [PATCH] arm64: kasan: fix include error in MTE functions

On Tue, Mar 08, 2022 at 10:30:58AM +0100, Paul Semel wrote:
> Fix `error: expected string literal in 'asm'`.
> This happens when compiling an ebpf object file that includes
> `net/net_namespace.h` from linux kernel headers.
> 
> Include trace:
>     include/net/net_namespace.h:10
>     include/linux/workqueue.h:9
>     include/linux/timer.h:8
>     include/linux/debugobjects.h:6
>     include/linux/spinlock.h:90
>     include/linux/workqueue.h:9
>     arch/arm64/include/asm/spinlock.h:9
>     arch/arm64/include/generated/asm/qrwlock.h:1
>     include/asm-generic/qrwlock.h:14
>     arch/arm64/include/asm/processor.h:33
>     arch/arm64/include/asm/kasan.h:9
>     arch/arm64/include/asm/mte-kasan.h:45
>     arch/arm64/include/asm/mte-def.h:14

Do you know where this issue was introduced? I can't tell whether this patch
is a fix for 5.17, or something needed only for 5.18 (and if so, which tree
introduced the problem).

Thanks,

Will