This is a note to let you know that I've just added the patch titled ARM: 9133/1: mm: proc-macros: ensure *_tlb_fns are 4B aligned to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm-9133-1-mm-proc-macros-ensure-_tlb_fns-are-4b-aligned.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From e6a0c958bdf9b2e1b57501fc9433a461f0a6aadd Mon Sep 17 00:00:00 2001 From: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Date: Mon, 4 Oct 2021 18:03:28 +0100 Subject: ARM: 9133/1: mm: proc-macros: ensure *_tlb_fns are 4B aligned From: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> commit e6a0c958bdf9b2e1b57501fc9433a461f0a6aadd upstream. A kernel built with CONFIG_THUMB2_KERNEL=y and using clang as the assembler could generate non-naturally-aligned v7wbi_tlb_fns which results in a boot failure. The original commit adding the macro missed the .align directive on this data. Link: https://github.com/ClangBuiltLinux/linux/issues/1447 Link: https://lore.kernel.org/all/0699da7b-354f-aecc-a62f-e25693209af4@xxxxxxxxxx/ Debugged-by: Ard Biesheuvel <ardb@xxxxxxxxxx> Debugged-by: Nathan Chancellor <nathan@xxxxxxxxxx> Debugged-by: Richard Henderson <richard.henderson@xxxxxxxxxx> Fixes: 66a625a88174 ("ARM: mm: proc-macros: Add generic proc/cache/tlb struct definition macros") Suggested-by: Ard Biesheuvel <ardb@xxxxxxxxxx> Acked-by: Ard Biesheuvel <ardb@xxxxxxxxxx> Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx> Tested-by: Nathan Chancellor <nathan@xxxxxxxxxx> Signed-off-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/arm/mm/proc-macros.S | 1 + 1 file changed, 1 insertion(+) --- a/arch/arm/mm/proc-macros.S +++ b/arch/arm/mm/proc-macros.S @@ -342,6 +342,7 @@ ENTRY(\name\()_cache_fns) .macro define_tlb_functions name:req, flags_up:req, flags_smp .type \name\()_tlb_fns, #object + .align 2 ENTRY(\name\()_tlb_fns) .long \name\()_flush_user_tlb_range .long \name\()_flush_kern_tlb_range Patches currently in stable-queue which might be from ndesaulniers@xxxxxxxxxx are queue-4.19/arm-9133-1-mm-proc-macros-ensure-_tlb_fns-are-4b-aligned.patch