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Wed, 16 Apr 2025 16:06:01 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:da43:aeff:fecc:bfd5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-73bd2199d57sm11048561b3a.32.2025.04.16.16.06.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Apr 2025 16:06:00 -0700 (PDT) Sender: Guenter Roeck From: Guenter Roeck To: Andrey Ryabinin Cc: Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino , Andrew Morton , kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, Guenter Roeck , Linus Torvalds Subject: [PATCH v2] x86/Kconfig: Fix allyesconfig Date: Wed, 16 Apr 2025 16:05:59 -0700 Message-ID: <20250416230559.2017012-1-linux@roeck-us.net> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 64-bit allyesconfig builds fail with x86_64-linux-ld: kernel image bigger than KERNEL_IMAGE_SIZE Bisect points to commit 6f110a5e4f99 ("Disable SLUB_TINY for build testing") as the responsible commit. Reverting that patch does indeed fix the problem. Further analysis shows that disabling SLUB_TINY enables KASAN, and that KASAN is responsible for the image size increase. Solve the build problem by disabling KASAN for test builds. Fixes: 6f110a5e4f99 ("Disable SLUB_TINY for build testing") Cc: Linus Torvalds Signed-off-by: Guenter Roeck --- v2: Disable KASAN unconditionally for test builds lib/Kconfig.kasan | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index f82889a830fa..190297f2ff83 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -37,7 +37,7 @@ menuconfig KASAN (HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS)) && \ CC_HAS_WORKING_NOSANITIZE_ADDRESS) || \ HAVE_ARCH_KASAN_HW_TAGS - depends on SYSFS && !SLUB_TINY + depends on SYSFS && !SLUB_TINY && !COMPILE_TEST select STACKDEPOT_ALWAYS_INIT help Enables KASAN (Kernel Address Sanitizer) - a dynamic memory safety --=20 2.45.2