Re: [PATCH v3 04/17] module: ensure __cfi_check alignment
From: Kees Cook <hidden>
Date: 2021-03-26 04:35:11
Also in:
bpf, linux-arch, linux-hardening, linux-kbuild, linux-pci, lkml
On Tue, Mar 23, 2021 at 01:39:33PM -0700, Sami Tolvanen wrote:
CONFIG_CFI_CLANG_SHADOW assumes the __cfi_check() function is page aligned and at the beginning of the .text section. While Clang would normally align the function correctly, it fails to do so for modules with no executable code. This change ensures the correct __cfi_check() location and alignment. It also discards the .eh_frame section, which Clang can generate with certain sanitizers, such as CFI. Link: https://bugs.llvm.org/show_bug.cgi?id=46293 Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Yay macros! :) Reviewed-by: Kees Cook <redacted> -- Kees Cook _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel