linux-kernel - Re: [PATCH v3 3/6] mm: Ratelimited mirrored memory related warning messages

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <YqBvjDavqUdLgmuo@kernel.org>
Date:   Wed, 8 Jun 2022 12:44:44 +0300
From:   Mike Rapoport <rppt@...nel.org>
To:     Wupeng Ma <mawupeng1@...wei.com>
Cc:     corbet@....net, will@...nel.org, ardb@...nel.org,
        catalin.marinas@....com, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, dave.hansen@...ux.intel.com, x86@...nel.org,
        hpa@...or.com, dvhart@...radead.org, andy@...radead.org,
        akpm@...ux-foundation.org, paul.walmsley@...ive.com,
        palmer@...belt.com, aou@...s.berkeley.edu, paulmck@...nel.org,
        keescook@...omium.org, songmuchun@...edance.com,
        rdunlap@...radead.org, damien.lemoal@...nsource.wdc.com,
        swboyd@...omium.org, wei.liu@...nel.org, robin.murphy@....com,
        david@...hat.com, anshuman.khandual@....com,
        thunder.leizhen@...wei.com, wangkefeng.wang@...wei.com,
        gpiccoli@...lia.com, chenhuacai@...nel.org, geert@...ux-m68k.org,
        chenzhou10@...wei.com, vijayb@...ux.microsoft.com,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-efi@...r.kernel.org,
        platform-driver-x86@...r.kernel.org, linux-mm@...ck.org,
        linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v3 3/6] mm: Ratelimited mirrored memory related warning
 messages

On Tue, Jun 07, 2022 at 05:38:02PM +0800, Wupeng Ma wrote:
> From: Ma Wupeng <mawupeng1@...wei.com>
> 
> If system has mirrored memory, memblock will try to allocate mirrored
> memory firstly and fallback to non-mirrored memory when fails, but if with
> limited mirrored memory or some numa node without mirrored memory, lots of
> warning message about memblock allocation will occur.
> 
> This patch ratelimit the warning message to avoid a very long print during
> bootup.
> 
> Signed-off-by: Ma Wupeng <mawupeng1@...wei.com>

Acked-by: Mike Rapoport <rppt@...ux.ibm.com>

> ---
>  mm/memblock.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/mm/memblock.c b/mm/memblock.c
> index e4f03a6e8e56..b1d2a0009733 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -327,7 +327,7 @@ static phys_addr_t __init_memblock memblock_find_in_range(phys_addr_t start,
>  					    NUMA_NO_NODE, flags);
>  
>  	if (!ret && (flags & MEMBLOCK_MIRROR)) {
> -		pr_warn("Could not allocate %pap bytes of mirrored memory\n",
> +		pr_warn_ratelimited("Could not allocate %pap bytes of mirrored memory\n",
>  			&size);
>  		flags &= ~MEMBLOCK_MIRROR;
>  		goto again;
> @@ -1384,7 +1384,7 @@ phys_addr_t __init memblock_alloc_range_nid(phys_addr_t size,
>  
>  	if (flags & MEMBLOCK_MIRROR) {
>  		flags &= ~MEMBLOCK_MIRROR;
> -		pr_warn("Could not allocate %pap bytes of mirrored memory\n",
> +		pr_warn_ratelimited("Could not allocate %pap bytes of mirrored memory\n",
>  			&size);
>  		goto again;
>  	}
> -- 
> 2.25.1
> 

-- 
Sincerely yours,
Mike.