mips,kgdb: fix recursive page fault with CONFIG_KPROBES

[pandora-kernel.git] / arch / mips / kernel / kgdb.c

diff --git a/arch/mips/kernel/kgdb.c b/arch/mips/kernel/kgdb.c
index f4546e9..23817a6 100644 (file)
--- a/arch/mips/kernel/kgdb.c
+++ b/arch/mips/kernel/kgdb.c
@@ -283,6 +283,15 @@ static int kgdb_mips_notify(struct notifier_block *self, unsigned long cmd,
        struct pt_regs *regs = args->regs;
        int trap = (regs->cp0_cause & 0x7c) >> 2;
 
+#ifdef CONFIG_KPROBES
+       /*
+        * Return immediately if the kprobes fault notifier has set
+        * DIE_PAGE_FAULT.
+        */
+       if (cmd == DIE_PAGE_FAULT)
+               return NOTIFY_DONE;
+#endif /* CONFIG_KPROBES */
+
        /* Userspace events, ignore. */
        if (user_mode(regs))
                return NOTIFY_DONE;