x86/entry/64: Trace irqflags unconditionally as ON when returning to user space

User space cannot disable interrupts any longer so trace return to user space
unconditionally as IRQS_ON.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Link: https://lkml.kernel.org/r/20200308222609.314596327@linutronix.de

diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index 80df781d4afbc820669198f97e1ec8b3930658a8..b67bae7091d7ecf9d5319b976c10be5e6045caa2 100644 (file)
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -1088,7 +1088,7 @@ SYM_FUNC_START(entry_INT80_32)
        STACKLEAK_ERASE
 
 restore_all:
-       TRACE_IRQS_IRET
+       TRACE_IRQS_ON
        SWITCH_TO_ENTRY_STACK
        CHECK_AND_APPLY_ESPFIX
 

diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index f2bb91e87877c35eab1001abecaca071f5f37ffe..0e9504fabe52609917c4aa3462f4faff1b1e32b5 100644 (file)
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -174,7 +174,7 @@ SYM_INNER_LABEL(entry_SYSCALL_64_after_hwframe, SYM_L_GLOBAL)
        movq    %rsp, %rsi
        call    do_syscall_64           /* returns with IRQs disabled */
 
-       TRACE_IRQS_IRETQ                /* we're about to change IF */
+       TRACE_IRQS_ON                   /* return enables interrupts */
 
        /*
         * Try to use SYSRET instead of IRET if we're returning to
@@ -619,7 +619,7 @@ ret_from_intr:
 .Lretint_user:
        mov     %rsp,%rdi
        call    prepare_exit_to_usermode
-       TRACE_IRQS_IRETQ
+       TRACE_IRQS_ON
 
 SYM_INNER_LABEL(swapgs_restore_regs_and_return_to_usermode, SYM_L_GLOBAL)
 #ifdef CONFIG_DEBUG_ENTRY