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GET /api/patches/2226045/?format=api
{ "id": 2226045, "url": "http://patchwork.ozlabs.org/api/patches/2226045/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/CANiDSCsOy0P1if-gJZqOM5pTJ0RDcwVfru1B7KFbTOEMqjPKJw@mail.gmail.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<CANiDSCsOy0P1if-gJZqOM5pTJ0RDcwVfru1B7KFbTOEMqjPKJw@mail.gmail.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/CANiDSCsOy0P1if-gJZqOM5pTJ0RDcwVfru1B7KFbTOEMqjPKJw@mail.gmail.com/", "date": "2026-04-22T03:51:45", "name": "New warning in linus/master", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": false, "hash": "d20505784e92c4063bccda0e918c83514caa0167", "submitter": { "id": 80459, "url": "http://patchwork.ozlabs.org/api/people/80459/?format=api", "name": "Ricardo Ribalda", "email": "ribalda@chromium.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/CANiDSCsOy0P1if-gJZqOM5pTJ0RDcwVfru1B7KFbTOEMqjPKJw@mail.gmail.com/mbox/", "series": [ { "id": 500917, "url": "http://patchwork.ozlabs.org/api/series/500917/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=500917", "date": "2026-04-22T03:51:45", "name": "New warning in linus/master", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500917/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2226045/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2226045/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-19923-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=chromium.org header.i=@chromium.org header.a=rsa-sha256\n header.s=google header.b=hGtoO2cJ;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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Tue, 21 Apr 2026\n 20:51:57 -0700 (PDT)" ], "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "From": "Ricardo Ribalda <ribalda@chromium.org>", "Date": "Wed, 22 Apr 2026 11:51:45 +0800", "X-Gmail-Original-Message-ID": "\n <CANiDSCsOy0P1if-gJZqOM5pTJ0RDcwVfru1B7KFbTOEMqjPKJw@mail.gmail.com>", "X-Gm-Features": "AQROBzAUxpvtmmUfT9SytqZ_vnzE8JQsTm61nRrGtQURGtsgH0JZ_vzze_Uz4hk", "Message-ID": "\n <CANiDSCsOy0P1if-gJZqOM5pTJ0RDcwVfru1B7KFbTOEMqjPKJw@mail.gmail.com>", "Subject": "New warning in linus/master", "To": "=?utf-8?q?Thomas_Wei=C3=9Fschuh?= <thomas.weissschuh@linutronix.de>,\n linux-arm-kernel@lists.infradead.org,\n Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,\n linuxppc-dev@lists.ozlabs.org", "Content-Type": "text/plain; charset=\"UTF-8\"", "Content-Transfer-Encoding": "quoted-printable", "X-Spam-Status": "No, score=-0.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,\n\tSPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "Hi Thomas\n\nMedia-CI has found a couple of new warnings in the latest kernel\nversion for aarch64 and powerpc. They get fixed with this patch and\nbefore moving I wanted to know if this was under your radar.\n\n\n\n+ CFLAGS_vgettimeofday-64.o += -include $(c-gettimeofday-y) $(call\ncc-option, -ffixed-r30) -Wno-maybe-uninitialized\n endif\n\n ifneq ($(c-getrandom-y),)\n\n\nhttps://gitlab.freedesktop.org/linux-media/users/ribalda/-/pipelines/1649144/test_report?job_name=cross-gcc\n\n\nCONFIG_CC_VERSION_TEXT=\"aarch64-linux-gnu-gcc (Debian 15.2.0-16) 15.2.0\"\n SYNC include/config/auto.conf\n CC arch/arm64/kernel/vdso/vgettimeofday.o\nIn file included from <command-line>:\nIn function ‘vdso_set_timespec’,\n inlined from ‘do_aux’ at /workdir/lib/vdso/gettimeofday.c:266:2,\n inlined from ‘__cvdso_clock_gettime_common’ at\n/workdir/lib/vdso/gettimeofday.c:293:10,\n inlined from ‘__cvdso_clock_gettime_data.constprop’ at\n/workdir/lib/vdso/gettimeofday.c:306:7:\n/workdir/lib/vdso/gettimeofday.c:104:26: warning: ‘sec’ may be used\nuninitialized [-Wmaybe-uninitialized]\n 104 | ts->tv_sec = sec + __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);\n | ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n/workdir/lib/vdso/gettimeofday.c: In function\n‘__cvdso_clock_gettime_data.constprop’:\n/workdir/lib/vdso/gettimeofday.c:242:13: note: ‘sec’ was declared here\n 242 | u64 sec, ns;\n | ^~~\nIn file included from /workdir/lib/vdso/gettimeofday.c:11:\nIn function ‘__iter_div_u64_rem’,\n inlined from ‘vdso_set_timespec’ at /workdir/lib/vdso/gettimeofday.c:104:21,\n inlined from ‘do_aux’ at /workdir/lib/vdso/gettimeofday.c:266:2,\n inlined from ‘__cvdso_clock_gettime_common’ at\n/workdir/lib/vdso/gettimeofday.c:293:10,\n inlined from ‘__cvdso_clock_gettime_data.constprop’ at\n/workdir/lib/vdso/gettimeofday.c:306:7:\n./include/vdso/math64.h:10:25: warning: ‘ns’ may be used uninitialized\n[-Wmaybe-uninitialized]\n 10 | while (dividend >= divisor) {\n | ~~~~~~~~~^~~~~~~~~~\n/workdir/lib/vdso/gettimeofday.c: In function\n‘__cvdso_clock_gettime_data.constprop’:\n/workdir/lib/vdso/gettimeofday.c:242:18: note: ‘ns’ was declared here\n 242 | u64 sec, ns;\n | ^~\n LD arch/arm64/kernel/vdso/vdso.so.dbg\n VDSOSYM include/generated/vdso-offsets.h\n OBJCOPY arch/arm64/kernel/vdso/vdso.so\n/workdir/lib/vdso/gettimeofday.c:104:26: warning: ‘sec’ may be used\nuninitialized [-Wmaybe-uninitialized]\n./include/vdso/math64.h:10:25: warning: ‘ns’ may be used uninitialized\n[-Wmaybe-uninitialized]\n\nCONFIG_CC_VERSION_TEXT=\"powerpc64-linux-gnu-gcc (Debian 15.2.0-15) 15.2.0\"\n SYNC include/config/auto.conf\n VDSO32C arch/powerpc/kernel/vdso/vgettimeofday-32.o\nIn file included from <command-line>:\nIn function ‘vdso_set_timespec’,\n inlined from ‘do_aux’ at /workdir/lib/vdso/gettimeofday.c:266:2,\n inlined from ‘__cvdso_clock_gettime_common’ at\n/workdir/lib/vdso/gettimeofday.c:293:10,\n inlined from ‘__cvdso_clock_gettime32_data’ at\n/workdir/lib/vdso/gettimeofday.c:327:7:\n/workdir/lib/vdso/gettimeofday.c:104:26: warning: ‘sec’ may be used\nuninitialized [-Wmaybe-uninitialized]\n 104 | ts->tv_sec = sec + __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);\n | ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n/workdir/lib/vdso/gettimeofday.c: In function ‘__cvdso_clock_gettime32_data’:\n/workdir/lib/vdso/gettimeofday.c:242:13: note: ‘sec’ was declared here\n 242 | u64 sec, ns;\n | ^~~\nIn file included from /workdir/lib/vdso/gettimeofday.c:11:\nIn function ‘__iter_div_u64_rem’,\n inlined from ‘vdso_set_timespec’ at /workdir/lib/vdso/gettimeofday.c:104:21,\n inlined from ‘do_aux’ at /workdir/lib/vdso/gettimeofday.c:266:2,\n inlined from ‘__cvdso_clock_gettime_common’ at\n/workdir/lib/vdso/gettimeofday.c:293:10,\n inlined from ‘__cvdso_clock_gettime32_data’ at\n/workdir/lib/vdso/gettimeofday.c:327:7:\n./include/vdso/math64.h:10:25: warning: ‘ns’ may be used uninitialized\n[-Wmaybe-uninitialized]\n 10 | while (dividend >= divisor) {\n | ~~~~~~~~~^~~~~~~~~~\n/workdir/lib/vdso/gettimeofday.c: In function ‘__cvdso_clock_gettime32_data’:\n/workdir/lib/vdso/gettimeofday.c:242:18: note: ‘ns’ was declared here\n 242 | u64 sec, ns;\n | ^~\nIn function ‘vdso_set_timespec’,\n inlined from ‘do_aux’ at /workdir/lib/vdso/gettimeofday.c:266:2,\n inlined from ‘__cvdso_clock_gettime_common’ at\n/workdir/lib/vdso/gettimeofday.c:293:10,\n inlined from ‘__cvdso_clock_gettime_data’ at\n/workdir/lib/vdso/gettimeofday.c:306:7:\n/workdir/lib/vdso/gettimeofday.c:104:26: warning: ‘sec’ may be used\nuninitialized [-Wmaybe-uninitialized]\n 104 | ts->tv_sec = sec + __iter_div_u64_rem(ns, NSEC_PER_SEC, &ns);\n | ~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n/workdir/lib/vdso/gettimeofday.c: In function ‘__cvdso_clock_gettime_data’:\n/workdir/lib/vdso/gettimeofday.c:242:13: note: ‘sec’ was declared here\n 242 | u64 sec, ns;\n | ^~~\nIn function ‘__iter_div_u64_rem’,\n inlined from ‘vdso_set_timespec’ at /workdir/lib/vdso/gettimeofday.c:104:21,\n inlined from ‘do_aux’ at /workdir/lib/vdso/gettimeofday.c:266:2,\n inlined from ‘__cvdso_clock_gettime_common’ at\n/workdir/lib/vdso/gettimeofday.c:293:10,\n inlined from ‘__cvdso_clock_gettime_data’ at\n/workdir/lib/vdso/gettimeofday.c:306:7:\n./include/vdso/math64.h:10:25: warning: ‘ns’ may be used uninitialized\n[-Wmaybe-uninitialized]\n 10 | while (dividend >= divisor) {\n | ~~~~~~~~~^~~~~~~~~~\n/workdir/lib/vdso/gettimeofday.c: In function ‘__cvdso_clock_gettime_data’:\n/workdir/lib/vdso/gettimeofday.c:242:18: note: ‘ns’ was declared here\n 242 | u64 sec, ns;\n | ^~\n VDSO32L arch/powerpc/kernel/vdso/vdso32.so.dbg\n VDSO32SYM include/generated/vdso32-offsets.h\n CC arch/powerpc/kernel/vdso/vgettimeofday-64.o\n VDSO64L arch/powerpc/kernel/vdso/vdso64.so.dbg\n VDSO64SYM include/generated/vdso64-offsets.h\n/workdir/lib/vdso/gettimeofday.c:104:26: warning: ‘sec’ may be used\nuninitialized [-Wmaybe-uninitialized]\n./include/vdso/math64.h:10:25: warning: ‘ns’ may be used uninitialized\n[-Wmaybe-uninitialized]\n/workdir/lib/vdso/gettimeofday.c:104:26: warning: ‘sec’ may be used\nuninitialized [-Wmaybe-uninitialized]\n./include/vdso/math64.h:10:25: warning: ‘ns’ may be used uninitialized\n[-Wmaybe-uninitialized]\n\nThanks", "diff": "diff --git a/arch/arm64/kernel/vdso/Makefile b/arch/arm64/kernel/vdso/Makefile\nindex 7dec05dd33b7..65914842fae0 100644\n--- a/arch/arm64/kernel/vdso/Makefile\n+++ b/arch/arm64/kernel/vdso/Makefile\n@@ -50,7 +50,7 @@ CFLAGS_vgettimeofday.o = $(CC_FLAGS_ADD_VDSO)\n CFLAGS_vgetrandom.o = $(CC_FLAGS_ADD_VDSO)\n\n ifneq ($(c-gettimeofday-y),)\n- CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y)\n+ CFLAGS_vgettimeofday.o += -include $(c-gettimeofday-y)\n-Wno-maybe-uninitialized\n endif\n\n ifneq ($(c-getrandom-y),)\ndiff --git a/arch/powerpc/kernel/vdso/Makefile\nb/arch/powerpc/kernel/vdso/Makefile\nindex 8834dfe9d727..4b8d40b1dfeb 100644\n--- a/arch/powerpc/kernel/vdso/Makefile\n+++ b/arch/powerpc/kernel/vdso/Makefile\n@@ -12,12 +12,12 @@ obj-vdso32 += getrandom-32.o vgetrandom-chacha-32.o\n obj-vdso64 += getrandom-64.o vgetrandom-chacha-64.o\n\n ifneq ($(c-gettimeofday-y),)\n- CFLAGS_vgettimeofday-32.o += -include $(c-gettimeofday-y)\n+ CFLAGS_vgettimeofday-32.o += -include $(c-gettimeofday-y)\n-Wno-maybe-uninitialized\n # Go prior to 1.16.x assumes r30 is not clobbered by any VDSO code.\nThat used to be true\n # by accident when the VDSO was hand-written asm code, but may not be\nnow that the VDSO is\n # compiler generated. To avoid breaking Go tell GCC not to use r30.\nImpact on code\n # generation is minimal, it will just use r29 instead.\n- CFLAGS_vgettimeofday-64.o += -include $(c-gettimeofday-y) $(call\ncc-option, -ffixed-r30)\n", "prefixes": [] }