linux-kernel - Re: [PATCH v2 4/4] mm/kmemleak: fix print format of pointer in pr

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Message-ID: <ZSP/ZR5P/xRiiq7D@arm.com>
Date:   Mon, 9 Oct 2023 14:25:57 +0100
From:   Catalin Marinas <catalin.marinas@....com>
To:     Liu Shixin <liushixin2@...wei.com>
Cc:     Patrick Wang <patrick.wang.shcn@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 4/4] mm/kmemleak: fix print format of pointer in
 pr_debug()

On Sun, Oct 08, 2023 at 10:33:17AM +0800, Liu Shixin wrote:
> With 0x%p, the pointer will be hashed and print (____ptrval____) instead.
> And with 0x%pa, the pointer can be successfully printed but with duplicate
> prefixes, which looks like:
> 
>  kmemleak: kmemleak_free(0x(____ptrval____))
>  kmemleak: kmemleak_free_percpu(0x(____ptrval____))
>  kmemleak: kmemleak_free_part_phys(0x0x0000000a1af86000)
> 
> Use 0x%px instead of 0x%p or 0x%pa to print the pointer. Then the print
> will be like:
> 
>  kmemleak: kmemleak_free(0xffff9111c145b020)
>  kmemleak: kmemleak_free_percpu(0x00000000000333b0)
>  kmemleak: kmemleak_free_part_phys(0x0000000a1af80000)
> 
> Signed-off-by: Liu Shixin <liushixin2@...wei.com>

Acked-by: Catalin Marinas <catalin.marinas@....com>