05f2d2f83b5a ("arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable") added a new TLB invalidation helper which is used when freeing intermediate levels of page table used for kernel mappings, but is missing the required ISB instruction after completion of the TLBI instruction.

Add the missing barrier.

Cc: stable@vger.kernel.org Fixes: 05f2d2f83b5a ("arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable") Signed-off-by: Will Deacon will@kernel.org --- arch/arm64/include/asm/tlbflush.h | 1 + 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h index 8af7a85f76bd..bc3949064725 100644 --- a/arch/arm64/include/asm/tlbflush.h +++ b/arch/arm64/include/asm/tlbflush.h @@ -251,6 +251,7 @@ static inline void __flush_tlb_kernel_pgtable(unsigned long kaddr) dsb(ishst); __tlbi(vaae1is, addr); dsb(ish); + isb(); } #endif