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Wed, 3 Apr 2024 11:19:33 +0800 Message-ID: <59860bb4-0dff-4575-b4cb-b88e6e1ccb77@huawei.com> Date: Wed, 3 Apr 2024 11:19:32 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 0/3] page_owner: Fix refcount imbalance Content-Language: en-US To: Oscar Salvador CC: Andrew Morton , , , Michal Hocko , Vlastimil Babka , Marco Elver , Andrey Konovalov , Alexander Potapenko References: <20240326063036.6242-1-osalvador@suse.de> <74b147b0-718d-4d50-be75-d6afc801cd24@huawei.com> From: Kefeng Wang In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.177.243] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm100001.china.huawei.com (7.185.36.93) X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 497B1100002 X-Stat-Signature: 958axz1x8scziqmj3tj63amq173tk9tr X-HE-Tag: 1712114377-716877 X-HE-Meta: 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 Q3N0eN1e uFihyZjCqhSmFqcqtrZprA3cYysKtSBmjV3PKzSvR+z82t8p6f7staO8u2/z3AqSvTazCfTlCsfL22tPTVL6iwv/H0PiZq4yPmupNdvCvryreaH+ahmJkk/SxtHEfB3o8PQTLR5+Nzh1BfwxNgAiWRtt+A4akggEvV3XBFF+iYymGI7QkQ5Hz+5N5vtOx8BnZRwYqnp+uJhkCykXbbjz4soDklRUHfhH/lzkmE7s3pNDOEAte8Y93Di5E37hwfyCnWMvZFPQQpf7PCZdGZ+qhvEkhmoz5mEe9rGzeQGPaK55s9vJQ4hgyUPFjbQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 2024/4/2 22:20, Oscar Salvador wrote: > On Fri, Mar 29, 2024 at 12:54:30PM +0800, Kefeng Wang wrote: >> I still see the following memory leak, could you check it? >> >> /mnt/arm64 # cat /sys//kernel/debug/kmemleak >> unreferenced object 0xffff000200d91000 (size 16): >> comm "kworker/4:0", pid 42, jiffies 4294892753 >> hex dump (first 16 bytes): >> 60 37 57 c1 00 00 ff ff 00 00 00 00 00 00 00 00 `7W............. >> backtrace (crc 4458f477): >> [<(____ptrval____)>] kmemleak_alloc+0x3c/0x50 >> [<(____ptrval____)>] kmalloc_trace+0x20c/0x2e0 >> [<(____ptrval____)>] __set_page_owner+0x1d0/0x2a0 >> [<(____ptrval____)>] prep_new_page+0x108/0x138 >> [<(____ptrval____)>] get_page_from_freelist+0x79c/0x16b8 >> [<(____ptrval____)>] __alloc_pages+0x1bc/0x440 >> [<(____ptrval____)>] new_slab+0x104/0x3c8 >> [<(____ptrval____)>] ___slab_alloc+0x368/0xb20 >> [<(____ptrval____)>] __slab_alloc.isra.0+0x3c/0x88 >> [<(____ptrval____)>] kmalloc_trace+0x280/0x2e0 >> [<(____ptrval____)>] __set_page_owner+0x1d0/0x2a0 >> [<(____ptrval____)>] prep_new_page+0x108/0x138 >> [<(____ptrval____)>] get_page_from_freelist+0x79c/0x16b8 >> [<(____ptrval____)>] __alloc_pages+0x1bc/0x440 >> [<(____ptrval____)>] new_slab+0x104/0x3c8 >> [<(____ptrval____)>] ___slab_alloc+0x368/0xb20 > > Hi Kefeng Wang > > You seem to be missing [1] > > Could you try with that patch applied? > > [1] https://lore.kernel.org/linux-mm/20240315222610.6870-1-osalvador@suse.de/ Hi, re-run with clean v6.9-rc2 (already include 7844c0147211 mm,page_owner: fix recursion), after booting and wait some time, the kmemleak is still occurred. > > Thanks >