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Fri, 12 Sep 2025 04:32:48 -0700 (PDT) MIME-Version: 1.0 From: Naresh Kamboju Date: Fri, 12 Sep 2025 17:02:36 +0530 X-Gm-Features: AS18NWCRkwK2BEtW0uxWjqehT8uEFjWUmULflZWeqoftij31KvQE0_RmSXQs-jg Message-ID: Subject: next-20250912: riscv: s390: mm/kasan/shadow.c 'kasan_populate_vmalloc_pte' pgtable.h:247:41: error: statement with no effect [-Werror=unused-value] To: kasan-dev , linux-mm , open list , linux-riscv , linux-s390@vger.kernel.org, lkft-triage@lists.linaro.org, Linux Regressions Cc: Kevin Brodsky , Andrey Ryabinin , Andrew Morton , David Hildenbrand , Dan Carpenter , Arnd Bergmann , Anders Roxell , Ben Copeland Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: B801C1C0017 X-Rspamd-Server: rspam05 X-Stat-Signature: x19g6hyaknd7rgygd7zys1mc6xu71qnu X-Rspam-User: X-HE-Tag: 1757676769-900601 X-HE-Meta: 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 zj5zkZjc Agk8Yv8akps2IPeZ9bazN/5ZmyJT3EdP+4AnQ7qspwY29JFq9t3IKyM4q2Q== 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: The following build warnings / errors noticed on the riscv and s390 with allyesconfig build on the Linux next-20250912 tag. Regression Analysis: - New regression? yes - Reproducibility? yes Build regression: next-20250912 mm/kasan/shadow.c 'kasan_populate_vmalloc_pte' pgtable.h error statement with no effect [-Werror=unused-value] Reported-by: Linux Kernel Functional Testing $ git log --oneline next-20250911..next-20250912 -- mm/kasan/shadow.c aed53ec0b797a mm: introduce local state for lazy_mmu sections 307f2dc9b308e kasan: introduce ARCH_DEFER_KASAN and unify static key across modes ## Test log In file included from include/linux/kasan.h:37, from mm/kasan/shadow.c:14: mm/kasan/shadow.c: In function 'kasan_populate_vmalloc_pte': include/linux/pgtable.h:247:41: error: statement with no effect [-Werror=unused-value] 247 | #define arch_enter_lazy_mmu_mode() (LAZY_MMU_DEFAULT) | ^ mm/kasan/shadow.c:322:9: note: in expansion of macro 'arch_enter_lazy_mmu_mode' 322 | arch_enter_lazy_mmu_mode(); | ^~~~~~~~~~~~~~~~~~~~~~~~ mm/kasan/shadow.c: In function 'kasan_depopulate_vmalloc_pte': include/linux/pgtable.h:247:41: error: statement with no effect [-Werror=unused-value] 247 | #define arch_enter_lazy_mmu_mode() (LAZY_MMU_DEFAULT) | ^ mm/kasan/shadow.c:497:9: note: in expansion of macro 'arch_enter_lazy_mmu_mode' 497 | arch_enter_lazy_mmu_mode(); | ^~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors ## Source * Kernel version: 6.17.0-rc5 * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git * Git describe: 6.17.0-rc5-next-20250912 * Git commit: 590b221ed4256fd6c34d3dea77aa5bd6e741bbc1 * Architectures: riscv, s390 * Toolchains: gcc (Debian 13.3.0-16) 13.3.0 * Kconfigs: allyesconfig ## Build * Build log: https://qa-reports.linaro.org/api/testruns/29863344/log_file/ * Build details: https://regressions.linaro.org/lkft/linux-next-master/next-20250912/log-parser-build-gcc/gcc-compiler-include_linux_pgtable_h-error-statement-with-no-effect/ * Build plan: https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/builds/32aTGVWBLzkF7PsIq9FBtLK3T4W * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/32aTGVWBLzkF7PsIq9FBtLK3T4W/ * Kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/32aTGVWBLzkF7PsIq9FBtLK3T4W/config ## Steps to reproduce $ tuxmake --runtime podman --target-arch riscv --toolchain gcc-13 --kconfig allyesconfig -- Linaro LKFT