From: Gabriele Paoloni <gabriele.paoloni@xxxxxxxxx> [ Upstream commit 3a866b16fd2360a9c4ebf71cfbf7ebfe968c1409 ] Right now for LMCE, if no_way_out is set, mce_panic() is called regardless of mca_cfg.tolerant. This is not correct as, if mca_cfg.tolerant = 3, the code should never panic. Add that check. [ bp: use local ptr 'cfg'. ] Signed-off-by: Gabriele Paoloni <gabriele.paoloni@xxxxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Reviewed-by: Tony Luck <tony.luck@xxxxxxxxx> Link: https://lkml.kernel.org/r/20201127161819.3106432-4-gabriele.paoloni@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- arch/x86/kernel/cpu/mcheck/mce.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 07188a0124922..c0e85ad111de8 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -1182,7 +1182,7 @@ void do_machine_check(struct pt_regs *regs, long error_code) * to see it will clear it. */ if (lmce) { - if (no_way_out) + if (no_way_out && cfg->tolerant < 3) mce_panic("Fatal local machine check", &m, msg); } else { order = mce_start(&no_way_out); -- 2.27.0
