Since normal execution of any non-branch instruction resets the PSTATE BTYPE field to 0, so do the same thing when emulating a trapped instruction.
Branches don't trap directly, so we should never need to assign a non-zero value to BTYPE here. Signed-off-by: Dave Martin <[email protected]> --- arch/arm64/kernel/traps.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 3af2768..4d8ce50 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -331,6 +331,8 @@ void arm64_skip_faulting_instruction(struct pt_regs *regs, unsigned long size) if (regs->pstate & PSR_MODE32_BIT) advance_itstate(regs); + else + regs->pstate &= ~(u64)PSR_BTYPE_MASK; } static LIST_HEAD(undef_hook); -- 2.1.4
