diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S index 290b7bc82da3c91d25c00aee470183f53a99c63c..8099fea0a72f1a959362f9a17763ee534d6316c2 100644 --- a/arch/x86/kernel/entry_32.S +++ b/arch/x86/kernel/entry_32.S @@ -251,6 +251,7 @@ check_userspace: jb resume_kernel # not returning to v8086 or userspace ENTRY(resume_userspace) + LOCKDEP_SYS_EXIT DISABLE_INTERRUPTS(CLBR_ANY) # make sure we don't miss an interrupt # setting need_resched or sigpending # between sampling and the iret @@ -338,6 +339,7 @@ sysenter_past_esp: jae syscall_badsys call *sys_call_table(,%eax,4) movl %eax,PT_EAX(%esp) + LOCKDEP_SYS_EXIT DISABLE_INTERRUPTS(CLBR_ANY) TRACE_IRQS_OFF movl TI_flags(%ebp), %ecx @@ -377,6 +379,7 @@ syscall_call: call *sys_call_table(,%eax,4) movl %eax,PT_EAX(%esp) # store the return value syscall_exit: + LOCKDEP_SYS_EXIT DISABLE_INTERRUPTS(CLBR_ANY) # make sure we don't miss an interrupt # setting need_resched or sigpending # between sampling and the iret @@ -467,6 +470,7 @@ work_pending: jz work_notifysig work_resched: call schedule + LOCKDEP_SYS_EXIT DISABLE_INTERRUPTS(CLBR_ANY) # make sure we don't miss an interrupt # setting need_resched or sigpending # between sampling and the iret diff --git a/include/asm-x86/irqflags_32.h b/include/asm-x86/irqflags_32.h index eff8585cb741f777b91c518c63666d59d3a6d4a2..d058b04e0083a2e1aa02f59b6ea6c42987188f8a 100644 --- a/include/asm-x86/irqflags_32.h +++ b/include/asm-x86/irqflags_32.h @@ -160,4 +160,17 @@ static inline int raw_irqs_disabled(void) # define TRACE_IRQS_OFF #endif +#ifdef CONFIG_DEBUG_LOCK_ALLOC +# define LOCKDEP_SYS_EXIT \ + pushl %eax; \ + pushl %ecx; \ + pushl %edx; \ + call lockdep_sys_exit; \ + popl %edx; \ + popl %ecx; \ + popl %eax; +#else +# define LOCKDEP_SYS_EXIT +#endif + #endif