diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2025-04-16 18:09:50 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-09-19 16:32:08 +0200 |
| commit | f075a33ef204ac99ad025720ad23e7897a48ab9b (patch) | |
| tree | 571eb81894490e67049857ba3d5b0cc4f357b7e4 | |
| parent | 23f24d0a538e536fe40ba57ff656e74c231263c7 (diff) | |
x86: disable image size check for test builds
commit 00a241f528427b63c415a410293b86e66098888e upstream.
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 the image size check for test
builds.
[akpm@linux-foundation.org: add comment, fix nearby typo (sink->sync)]
[akpm@linux-foundation.org: fix comment snafu
Link: https://lore.kernel.org/oe-kbuild-all/202504191813.4r9H6Glt-lkp@intel.com/
Link: https://lkml.kernel.org/r/20250417010950.2203847-1-linux@roeck-us.net
Fixes: 6f110a5e4f99 ("Disable SLUB_TINY for build testing")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: <x86@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/kernel/vmlinux.lds.S | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index c57d5df1abc6..0929d7fe7e27 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -500,10 +500,18 @@ SECTIONS PROVIDE(__ref_stack_chk_guard = __stack_chk_guard); /* - * The ASSERT() sink to . is intentional, for binutils 2.14 compatibility: + * COMPILE_TEST kernels can be large - CONFIG_KASAN, for example, can cause + * this. Let's assume that nobody will be running a COMPILE_TEST kernel and + * let's assert that fuller build coverage is more valuable than being able to + * run a COMPILE_TEST kernel. + */ +#ifndef CONFIG_COMPILE_TEST +/* + * The ASSERT() sync to . is intentional, for binutils 2.14 compatibility: */ . = ASSERT((_end - LOAD_OFFSET <= KERNEL_IMAGE_SIZE), "kernel image bigger than KERNEL_IMAGE_SIZE"); +#endif #ifdef CONFIG_X86_64 /* |