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Tue, 22 Jul 2025 10:36:38 -0700 (PDT) Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250722134345.761035548@linuxfoundation.org> In-Reply-To: <20250722134345.761035548@linuxfoundation.org> From: Naresh Kamboju Date: Tue, 22 Jul 2025 23:06:26 +0530 X-Gm-Features: Ac12FXyiK9qISUvF_HIZvmbjmo4biYOCInngZ1yVyGInVK5qVkduAH0VIdLJwh8 Message-ID: Subject: Re: [PATCH 6.15 000/187] 6.15.8-rc1 review To: Greg Kroah-Hartman , clang-built-linux Cc: stable@vger.kernel.org, patches@lists.linux.dev, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, linux@roeck-us.net, shuah@kernel.org, patches@kernelci.org, lkft-triage@lists.linaro.org, pavel@denx.de, jonathanh@nvidia.com, f.fainelli@gmail.com, sudipm.mukherjee@gmail.com, srw@sladewatkins.net, rwarsow@gmx.de, conor@kernel.org, hargar@microsoft.com, broonie@kernel.org, Nathan Chancellor , Arnd Bergmann , Dan Carpenter , Anders Roxell , Ben Copeland Content-Type: text/plain; charset="UTF-8" On Tue, 22 Jul 2025 at 19:37, Greg Kroah-Hartman wrote: > > This is the start of the stable review cycle for the 6.15.8 release. > There are 187 patches in this series, all will be posted as a response > to this one. If anyone has any issues with these being applied, please > let me know. > > Responses should be made by Thu, 24 Jul 2025 13:43:10 +0000. > Anything received after that time might be too late. > > The whole patch series can be found in one patch at: > https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.15.8-rc1.gz > or in the git tree and branch at: > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.15.y > and the diffstat can be found below. > > thanks, > > greg k-h Regressions while building allyesconfig build for arm64 and x86 with the toolchain clang-nightly version 22.0.0. Regression Analysis: - New regression? Yes - Reproducibility? Yes Build regression: arm64 x86 mm ksm.c error variable 'output' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] Build regression: arm64 x86 samsung s5p_mfc_cmd_v6.c error variable 'h2r_args' is uninitialized when passed as a const pointer argument here Build regression: arm64 x86 mediatek mcu.c error variable 'hdr' is uninitialized when passed as a const pointer argument here Build regression: arm64 x86 broadcom phy_lcn.c error variable 'diq_start' is uninitialized when passed as a const pointer argument here Build regression: arm64 x86 usb cxacru.c error variable 'bp' is used uninitialized whenever 'if' condition is false Build regression: arm64 x86 drm dpu_plane.c error variable 'crtc_state' is used uninitialized whenever 'if' condition is false Build regression: arm64 x86 drm amdgpu imu_v12_0.c error variable 'data' is uninitialized when used here Reported-by: Linux Kernel Functional Testing ## Build log mm/ksm.c:3674:11: error: variable 'output' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] 3674 | else if (ksm_advisor == KSM_ADVISOR_SCAN_TIME) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/platform/samsung/s5p-mfc/s5p_mfc_cmd_v6.c:45:7: error: variable 'h2r_args' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer] 45 | &h2r_args); | ^~~~~~~~ drivers/media/platform/samsung/s5p-mfc/s5p_mfc_cmd_v6.c:133:7: error: variable 'h2r_args' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer] 133 | &h2r_args); | ^~~~~~~~ drivers/media/platform/samsung/s5p-mfc/s5p_mfc_cmd_v6.c:148:7: error: variable 'h2r_args' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer] 148 | &h2r_args); | ^~~~~~~~ drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:3365:21: error: variable 'hdr' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer] 3365 | skb_put_data(skb, &hdr, sizeof(hdr)); | ^~~ drivers/net/wireless/mediatek/mt76/mt7996/mcu.c:1875:21: error: variable 'hdr' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer] 1875 | skb_put_data(skb, &hdr, sizeof(hdr)); | ^~~ drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c:2728:13: error: variable 'diq_start' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer] 2728 | &diq_start, 1, 16, 69); | ^~~~~~~~~ drivers/usb/atm/cxacru.c:1104:6: error: variable 'bp' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] 1104 | if (instance->modem_type->boot_rom_patch) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c:1066:6: error: variable 'crtc_state' is used uninitialized whenever 'if' condition is false [-Werror,-Wsometimes-uninitialized] 1066 | if (plane_state->crtc) | ^~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/imu_v12_0.c:374:30: error: variable 'data' is uninitialized when used here [-Werror,-Wuninitialized] 374 | program_imu_rlc_ram(adev, data, (const u32)size); | ^~~~ ## Source * Git tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git * Git sha: 81bcc8b99854ba689a8c85fb1d39d5acdce0385a * Git describe: v6.15.7-188-g81bcc8b99854 * Architectures: arm64 x86 * Toolchains: Debian clang version 22.0.0 (++20250721112855+43a829a7e894-1~exp1~20250721112913.1588) * Kconfigs: allyesconfig ## Build * Build log: https://regressions.linaro.org/lkft/linux-stable-rc-linux-6.15.y/v6.15.7-188-g81bcc8b99854/build/clang-nightly-allyesconfig/ * Build run: https://regressions.linaro.org/lkft/linux-stable-rc-linux-6.15.y/v6.15.7-188-g81bcc8b99854/testruns/1699830/ * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/30EaSfe4S6Pi4zE2kv1TGQcGByr/ * Kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/30EaSfe4S6Pi4zE2kv1TGQcGByr/config ## Steps to reproduce * tuxmake --runtime podman --target-arch arm64 --toolchain clang-nightly --kconfig allyesconfig LLVM=1 LLVM_IAS=1 -- Linaro LKFT https://lkft.linaro.org