1 files changed, 5 insertions, 1 deletions

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index fd4db0db3708..c77586061bcb 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1717,7 +1717,11 @@ void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int ski
          */
         regs->bp = rewind_frame_pointer(skip + 1);
         regs->cs = __KERNEL_CS;
-        local_save_flags(regs->flags);
+        /*
+         * We abuse bit 3 to pass exact information, see perf_misc_flags
+         * and the comment with PERF_EFLAGS_EXACT.
+         */
+        regs->flags = 0;
 }
 
 unsigned long perf_instruction_pointer(struct pt_regs *regs)