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Tue, 2 Apr 2024 14:19:22 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap2.dmz-prg2.suse.org with ESMTPSA id gG7HNOoTDGakZQAAn2gu4w (envelope-from ); Tue, 02 Apr 2024 14:19:22 +0000 Date: Tue, 2 Apr 2024 16:20:47 +0200 From: Oscar Salvador To: Kefeng Wang Cc: Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Michal Hocko , Vlastimil Babka , Marco Elver , Andrey Konovalov , Alexander Potapenko Subject: Re: [PATCH v3 0/3] page_owner: Fix refcount imbalance Message-ID: References: <20240326063036.6242-1-osalvador@suse.de> <74b147b0-718d-4d50-be75-d6afc801cd24@huawei.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <74b147b0-718d-4d50-be75-d6afc801cd24@huawei.com> X-Spamd-Result: default: False [-0.30 / 50.00]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; BAYES_HAM(-0.00)[33.96%]; RCVD_TLS_ALL(0.00)[]; RCPT_COUNT_SEVEN(0.00)[9]; RCVD_VIA_SMTP_AUTH(0.00)[]; MISSING_XM_UA(0.00)[]; ARC_NA(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_BLOCKED(0.00)[rspamd.com]; FROM_HAS_DN(0.00)[]; FREEMAIL_CC(0.00)[linux-foundation.org,vger.kernel.org,kvack.org,suse.com,suse.cz,google.com,gmail.com]; MIME_TRACE(0.00)[0:+]; FROM_EQ_ENVFROM(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_DN_SOME(0.00)[] X-Spam-Score: -0.30 X-Spam-Level: X-Spam-Flag: NO 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/ Thanks -- Oscar Salvador SUSE Labs