From: Borislav Petkov <[email protected]> intel_pmu_pebs_fixup_ip() needs only the insn length so use the appropriate helper instead of a full decode. A full decode differs only in running insn_complete() on the decoded insn but that is not needed here.
Signed-off-by: Borislav Petkov <[email protected]> --- arch/x86/events/intel/ds.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index fb327d11a04d..56cbcfee0ab1 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -1263,14 +1263,14 @@ static int intel_pmu_pebs_fixup_ip(struct pt_regs *regs) is_64bit = kernel_ip(to) || any_64bit_mode(regs); #endif insn_init(&insn, kaddr, size, is_64bit); - insn_get_length(&insn); + /* * Make sure there was not a problem decoding the * instruction and getting the length. This is * doubly important because we have an infinite * loop if insn.length=0. */ - if (!insn.length) + if (insn_get_length(&insn) || !insn.length) break; to += insn.length; -- 2.21.0
