Re: [for-stable-4.19 PATCH v2 0/2] Backport patches to fix KASAN+LKDTM with recent clang on ARM64
On Sat, Mar 20, 2021 at 12:16:24PM +0800, Nicolas Boichat wrote: > Backport 2 patches that are required to make KASAN+LKDTM work > with recent clang (patch 2/2 has a complete description). > Tested on our chromeos-4.19 branch. > Also compile tested on x86-64 and arm64 with gcc this time > around. > > Patch 1/2 adds a guard around noinstr that matches upstream, > to prevent a build issue, and has some minor context conflicts. > Patch 2/2 is a clean backport. > > These patches have been merged to 5.4 stable already. We might > need to backport to older stable branches, but this is what I > could test for now. Ok, trying this again, let's see what breaks :) thanks, greg k-h
[for-stable-4.19 PATCH v2 0/2] Backport patches to fix KASAN+LKDTM with recent clang on ARM64
Backport 2 patches that are required to make KASAN+LKDTM work with recent clang (patch 2/2 has a complete description). Tested on our chromeos-4.19 branch. Also compile tested on x86-64 and arm64 with gcc this time around. Patch 1/2 adds a guard around noinstr that matches upstream, to prevent a build issue, and has some minor context conflicts. Patch 2/2 is a clean backport. These patches have been merged to 5.4 stable already. We might need to backport to older stable branches, but this is what I could test for now. Changes in v2: - Guard noinstr macro by __KERNEL__ && !__ASSEMBLY__ to prevent expansion in linker script and match upstream. Mark Rutland (1): lkdtm: don't move ctors to .rodata Thomas Gleixner (1): vmlinux.lds.h: Create section for protection against instrumentation arch/powerpc/kernel/vmlinux.lds.S | 1 + drivers/misc/lkdtm/Makefile | 2 +- drivers/misc/lkdtm/rodata.c | 2 +- include/asm-generic/sections.h| 3 ++ include/asm-generic/vmlinux.lds.h | 10 ++ include/linux/compiler.h | 54 +++ include/linux/compiler_types.h| 6 scripts/mod/modpost.c | 2 +- 8 files changed, 77 insertions(+), 3 deletions(-) -- 2.31.0.rc2.261.g7f71774620-goog