1 files changed, 7 insertions, 5 deletions

diff --git a/arch/x86/kernel/cpu/perf_event_amd_ibs.c b/arch/x86/kernel/cpu/perf_event_amd_ibs.c
index b14e71127c82..5a9f95b5cc26 100644
--- a/arch/x86/kernel/cpu/perf_event_amd_ibs.c
+++ b/arch/x86/kernel/cpu/perf_event_amd_ibs.c
@@ -473,11 +473,13 @@ static int perf_ibs_handle_irq(struct perf_ibs *perf_ibs, struct pt_regs *iregs)
         u64 *buf, *config, period;
 
         if (!test_bit(IBS_STARTED, pcpu->state)) {
-                /* Catch spurious interrupts after stopping IBS: */
-                if (!test_and_clear_bit(IBS_STOPPING, pcpu->state))
-                        return 0;
-                rdmsrl(perf_ibs->msr, *ibs_data.regs);
-                return (*ibs_data.regs & perf_ibs->valid_mask) ? 1 : 0;
+                /*
+                 * Catch spurious interrupts after stopping IBS: After
+                 * disabling IBS there could be still incomming NMIs
+                 * with samples that even have the valid bit cleared.
+                 * Mark all this NMIs as handled.
+                 */
+                return test_and_clear_bit(IBS_STOPPING, pcpu->state) ? 1 : 0;
         }
 
         msr = hwc->config_base;