From a00a568345f67b095fdf999e9093d68baa39b9e2 Mon Sep 17 00:00:00 2001 From: Petr Pavlu Date: Fri, 12 Jun 2026 15:38:28 +0200 Subject: [PATCH] module: Remove unused DISCARD_EH_FRAME definition from module.lds.S The linker script scripts/module.lds.S contains an unused DISCARD_EH_FRAME definition introduced by commit 68c76ad4a957 ("arm64: unwind: add asynchronous unwind tables to kernel and modules"). As shown in an earlier version of that patch [1], DISCARD_EH_FRAME was meant to be used by SANITIZER_DISCARDS in the same file, as follows: -# define SANITIZER_DISCARDS *(.eh_frame) +# define SANITIZER_DISCARDS DISCARD_EH_FRAME However, in the meantime, SANITIZER_DISCARDS was removed entirely from module.lds.S by commit 89245600941e ("cfi: Switch to -fsanitize=kcfi"). Eventually, the mentioned commit 68c76ad4a957 only added the new DISCARD_EH_FRAME definition to this file without actually using it. The file include/asm-generic/vmlinux.lds.h contains a similar DISCARD_EH_FRAME definition for vmlinux to discard .eh_frame sections that may be present when CONFIG_GCOV_KERNEL, CONFIG_KASAN_GENERIC or CONFIG_KCSAN is enabled. Testing these options on arm64 with LLVM 19.1 did not show any unexpected .eh_frame sections in modules. Remove the unused DISCARD_EH_FRAME definition from scripts/module.lds.S. Link: https://lore.kernel.org/linux-arm-kernel/20220701152724.3343599-2-ardb@kernel.org/ [1] Reviewed-by: Sami Tolvanen Signed-off-by: Petr Pavlu --- scripts/module.lds.S | 5 ----- 1 file changed, 5 deletions(-) diff --git a/scripts/module.lds.S b/scripts/module.lds.S index b62683061d79..d0f200428957 100644 --- a/scripts/module.lds.S +++ b/scripts/module.lds.S @@ -3,11 +3,6 @@ * Archs are free to supply their own linker scripts. ld will * combine them automatically. */ -#ifdef CONFIG_UNWIND_TABLES -#define DISCARD_EH_FRAME -#else -#define DISCARD_EH_FRAME *(.eh_frame) -#endif #include