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[2003:cb:c708:f100:8096:9368:ba52:a341]) by smtp.gmail.com with ESMTPSA id n9-20020a5d4009000000b0021022ecd0a7sm9479833wrp.74.2022.05.31.05.48.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 31 May 2022 05:48:20 -0700 (PDT) Message-ID: <0e2005c7-8ccb-7d07-57ed-a04cfd7af369@redhat.com> Date: Tue, 31 May 2022 14:48:20 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 Subject: Re: [PATCH] mm/memremap: fix missing call to untrack_pfn() in pagemap_range() Content-Language: en-US To: Miaohe Lin , akpm@linux-foundation.org Cc: anshuman.khandual@arm.com, osalvador@suse.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20220531122643.25249-1-linmiaohe@huawei.com> From: David Hildenbrand Organization: Red Hat In-Reply-To: <20220531122643.25249-1-linmiaohe@huawei.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 31.05.22 14:26, Miaohe Lin wrote: > We forget to call untrack_pfn() to pair with track_pfn_remap() when range > is not allowed to hotplug. Fix it by jump err_kasan. > > Fixes: bca3feaa0764 ("mm/memory_hotplug: prevalidate the address range being added with platform") > Signed-off-by: Miaohe Lin > --- > mm/memremap.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/mm/memremap.c b/mm/memremap.c > index 2b92e97cb25b..b870a659eee6 100644 > --- a/mm/memremap.c > +++ b/mm/memremap.c > @@ -214,7 +214,7 @@ static int pagemap_range(struct dev_pagemap *pgmap, struct mhp_params *params, > > if (!mhp_range_allowed(range->start, range_len(range), !is_private)) { > error = -EINVAL; > - goto err_pfn_remap; > + goto err_kasan; > } > > mem_hotplug_begin(); Thanks! Reviewed-by: David Hildenbrand -- Thanks, David / dhildenb