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b=Z+aaWMUisv/Pt7vSG6AD9aO3JpyxjF78WRzeRnLPMpqAaRQ/ywIHt6jKVn4ToO4QK mNpjzdy0FLkie5BQLYK1KTu2GxCMyTuIMl2O14IrtucchDQ4Q5Cwrm16EPB5FtpPiC u+uZ9KIWeZf+hr4j4jAVYy+8J8BwKpU+RxydhKbqWr3dN6jQjz00QQWdcnRv+TjwlQ WElm16ftzTAEPhWh7UHpJNAexzV1UXXQcMufhfNICdolB4mt+LEQX2w8I+k1OII6m3 LBUk12P2gyXEgru+UnXgBG2XGrWhBOqLWxNlTAIAQVGT2JlbIyy3PwztEQZqjk9t9T 6uh3jc3Sgfu6A== Message-ID: <9a17f507-b8bf-4fc9-b1c6-e1f80001cedf@kernel.org> Date: Wed, 4 Nov 2026 11:49:58 +0100 X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm: page_owner: use %u to print the stack depot handle Content-Language: en-US To: zhangchujun , akpm@linux-foundation.org Cc: linux-mm@kvack.org References: <20261104073328.1737-1-zhangchujun@cmss.chinamobile.com> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSNWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBrZXJuZWwub3JnPsLBsAQTAQoAWhYhBKlA1DSZLC6OmRA9UCJPp+fM gqZkBQJqFFy6GxSAAAAAAAQADm1hbnUyLDIuNSsxLjEyLDIsMgIbAwUJGtCBUAULCQgHAwUV CgkICwUWAgMBAAIeBQIXgAAKCRAiT6fnzIKmZJIUEADFx/tREzUImHrEwVHeSvDFmA7tJysI UVrlvrM09E7GIuzphzv7jYmo8n3ANpCczLEVr4G0syYQdTigaZgv3+FQDIIzhKih1IHhu1Ei XHlywNWKnQxxQEUNi5Mwx43wQz5XVw9F1A7gtKBKNtfogO511hAbrzagrYajyQacEJ/+sfhZ 9Da8ltHIXD8pcYaHUfQgEusCgmEd9+KrUwrTbckFKmYq5chuE6yJ4J0EmWknL096jIE6CnzF FRslQ3B1UKDjxVsm1ZHfir5NeWszLkTvGFsddFaWTgh8UycESG6VQzKXjjewXu2pG7YQYRpj QKm1W5X2TkwWkXRBZTmfmbhxIUMh3+zf5wQ463rSmDN/8v81tdqBtAW6rH/kzg1GvkaTHXn0 507yEHFzBksk2viAuIxxr7km8+/KARYLIdGtx30EG8cKzAUZOK6WqxtNCsXUJNrVE8CWrCaD icoNu7Fs1c5hmPHdSTnU48ce67449DdnO4neLSNhRiGlMHJgfJUmgrxu/hcYeOZ3haWmEQ2w uW1Mh01OHi8QZHCEyAbABrPs9GUgccc/4eYXX9hIgxfSkYzn8f+8NuIFPWl/0uTvjgqU29FQ SbzOLxHq9439Ox40G5mS5eZXRGxITYR+6TXvRGI6P/264jvflnr/pDGUttaikU+0W+1uxgKH cmYbEc7ATQRbGTU1AQgAn0H6UrFiWcovkh6EXVcl+SeqyO6JHOPm+e9Wu0Vw+VIUvXZVUVVQ La1PQDUi6j00ChlcR66g9/V0sPIcSutacPKfdKYOBvzd4rlhL8rfrdEsQw5ApZxrA8kYZVMh FmBRKAa6wos25moTlMKpCWzTH84+WO5+ziCTsTUZASAToz3RdunTD+vQcHj0GqNTPAHK63sf bAB2I0BslZkXkY1RLb/YhuA6E7JyEd2pilZOrIuBGl/5q2qSakgnAVFWFBR/DO27JuAksYnq +aH8vI0xGvwn75KqSk4UzAkDzWSmO4ZHuahKtQgZNsMYV+PGayRBX9b9zbldzopoLBdqHc4n jQARAQABwsF8BBgBCgAmAhsMFiEEqUDUNJksLo6ZED1QIk+n58yCpmQFAmfIHFQFCRYU6J8A CgkQIk+n58yCpmS2PA//bqN1LfcotmArgElsa+0EGZSQlYgK48pm8WAeTXTngudP9IJ4SuKY HR5RNjHcBeqN+Me0zxRqYzRb8nGanHEkDyf4Im8DQM8d6vbyU+FcPmG4skud4kgS1zMHnlVd SXfSIwKC/hKgdHG8aBV7545Lz9X6Iohea+94wneD0aw/hqF+QWewGZhWJriWAZtvEkzNjQOi 4U9F/trLten/x7bpphDSnDMKJtITbtzATT1Dq7o7VpIUK1nCTQALMuMjKCdi8OdU/+V+R3O4 0PXWvX8qrvqYapVbZ+9KqT74FsuB0Ya9uXwgBF2Q6cRuETZk5vqaqKxzqoQZCO8AOz/58j6O 2RHNy/mZEN+7tJ5Tsq42zVJ4jxsT8b9YplavCMsnBgDeRWhcbYhCyttoL7nYISyWg4kQYZ/P wIV3OuNv2f8iKYsxNsRuClOAF82+gvqOy1/1pprFjy8uo2pkoOrb63aOP3vO5VHnRKgra6dq NcaZ+c6J4H+nEJGi2SkHAUJz5oBzuThvPudLvPA/SK8sKoM01IRxSihev/S/5WLazXB1PGem OCbvzC1IjWJJraxiDJ5IygokapUa2RP7+WBR22skQ3SSl6G107QgWKSyTOGWEaRmV53vxQLV jXuCmzSSasTL60zq5yGrT4/DYQVSNEUiUbG4pYekxJujNeEDkUlky0Y= In-Reply-To: <20261104073328.1737-1-zhangchujun@cmss.chinamobile.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: A646D1C0006 X-Spam-Status: No, score=-17.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=4.0.1 X-Stat-Signature: 1748nhwrs5wkxp8iz3bztx7uy57rprck X-Rspam-User: X-HE-Tag: 1793789401-534994 X-HE-Meta: U2FsdGVkX1/RILPCTawaB7jZUDvBbsuhhsHWZWKMjQZzYZ2BYIMoS1UeOMchcYt1VBvY3mgZyXMB0RNxjwRLlhkkxu2kWyd31NORNPBLrIlTCZb4xodUC9GzngNsNRh6KHJYZWszykuyqqm25DvVFPxo1wCeR4fB6aBclU7nuCHvnb21lFjQq9oN34oz6AaENLAJIgsR2ADGDvI56MAtRy4Z7DLGa/oCJMJ1y8HBHo75GaCegJegXYDDAVvBKAarKp0zjLSc9vkmu2C70tdGtsYQtXbIi4ufynjR7QnR6Z2Cq40aR9BilkAqOEB6pHMXfQWMgObhFxFHxFYESQwK1eLdMIchUrHCcOBMOLl6cAnNlED4nZD4vsm3GhFyxFFabSNuz6BHodvgB44AHfJOm/X74lzITOf4Z4+1+w54vSIGb97t1oqgG++y6YkeP0anePE1R4jDWHgxfiswQ0Ln40QEv8vETqQoCvdc+25BhoCBbWkgmeYI6P8X+g7/fAWs02q2L5+si7UZzmkl63XpN7V8ob02er+HbhxxjvXZdhzVWB1Lz/19TzzQFc9awHMwmqdQ3vrSU13vMgqMCggm1ANtwxA+Lda2XRGUB+yVJksUMKe+CxQcEHXC2HFHddWT1QdDK5zwaWZbjT3z0zHTlITWhLn9z40sAc+75rx538YCDXJynbzPjYBF5kpYIMamfa9I0Dw71HEFj7WiJmsw8KcVjWwbXfjx94CmicdqZ6cAFP65k3MC2zcB7xFlWSwq/UVvoSFZYJAcou+7Ycpx1SV7UIMV4TJi4qixwTwNijsoh63/fKL/xBe7fk4oBwcLHhOSq6qmiKfy1C2EcHTKa244Zuz+9mG/5UK+yeme0pCyhwhHDSYVJFRO/KkHl26SX2pB1JniDTF6tZ6YUKhCFegDIVWDkiu/bIFdz89fkkwsPhc89/D2n8kGDDXE+s9NHBkKXWpzrI7pqSq2ojk hkiMqyAm WT/P7XAk1OE3rdJWeREhqwl2E1jEdboC3C7OGXWEYHW74UiGl/RwbVkrGGF1LZhhy4anTOVdTQMQzVEAUIktHjW7a61DwVbg71G6/Rzw5be5X2kXT11BsiFeQbGScy44GijU9SYkm5VsSH1Mk747NbAOOTeAoBj/vsJpFq0Gx32aKWM/CpfXg8oPTk6B5L458Ku/hGZZmSdK1R+7nMJK5dbLjM7j91IIRGvN2U9x61RgYbVgoRRBksP48ZpfT/DrLEwhqwGQ8wTCMLT4MfAlr5NwacSrI2ZugVr4jRF7t2vouDv0k1zcHrknzBIkok0W/wgdzZOZ+yzGryoqMO1kd0yx9nvbH+X3oanIO Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 11/4/26 08:33, zhangchujun wrote: > stack_record->handle.handle is a depot_stack_handle_t, i.e. an > unsigned 32-bit type. Printing it with %d may display a negative > handle when the extra bits stored in the upper part of the > handle are set, which confuses the users of the page_owner_stacks > debugfs interface. > > Use %u instead. > > Signed-off-by: zhangchujun Acked-by: Vlastimil Babka (SUSE) > diff --git a/mm/page_owner.c b/mm/page_owner.c > index cfc31c92d765..02bb304b53cf 100644 > --- a/mm/page_owner.c > +++ b/mm/page_owner.c > @@ -1089,7 +1089,7 @@ static int stack_print(struct seq_file *m, void *v) > seq_printf(m, " %pS\n", (void *)entries[i]); > } > if (ctx->flags & STACK_PRINT_FLAG_HANDLE) > - seq_printf(m, "handle: %d\n", stack_record->handle.handle); > + seq_printf(m, "handle: %u\n", stack_record->handle.handle); > if (ctx->flags & STACK_PRINT_FLAG_PAGES) > seq_printf(m, "nr_base_pages: %d\n", nr_base_pages); > seq_putc(m, '\n');