On Wed, Apr 03, 2019 at 11:34:08AM +0100, Will Deacon wrote: > Commit b9a4b9d084d978f80eb9210727c81804588b42ff upstream. > > FAR_EL1 is UNKNOWN for all debug exceptions other than those caused by > taking a hardware watchpoint. Unfortunately, if a debug handler returns > a non-zero value, then we will propagate the UNKNOWN FAR value to > userspace via the si_addr field of the SIGTRAP siginfo_t. > > Instead, let's set si_addr to take on the PC of the faulting instruction, > which we have available in the current pt_regs. > > Cc: <stable@xxxxxxxxxxxxxxx> # 4.19.y > Reviewed-by: Mark Rutland <mark.rutland@xxxxxxx> > Signed-off-by: Will Deacon <will.deacon@xxxxxxx> > Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx> > --- > arch/arm64/mm/fault.c | 9 +++++---- > 1 file changed, 5 insertions(+), 4 deletions(-) Thanks for all 5 of these patches, now queued up. greg k-h
