Hi, I notice that trace_kprobe.c does local_save_flags() within __kprobe_trace_func(), which is called (at least on x86) with interrupts always disabled. This is then used as interrupt on/off state within the recorded event, which is misleading.
I also don't understand why arch/x86/kernel/kprobes/ftrace.c pre handler disables interrupts, considering the following comment above arch/x86/kernel/kprobes/core.c: kprobe_int3_handler() * Interrupts are disabled on entry as trap3 is an interrupt gate and they * remain disabled throughout this function. A struct pt_regs is received by this function, but I don't see any way to get the state of irq enable/disable from struct pt_regs across architectures. Any thoughts on how to fix this ? Thanks, Mathieu -- Mathieu Desnoyers EfficiOS Inc. http://www.efficios.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
