[PATCH] Xmon bug fix for soft-reset

[linux-2.6] / arch / ppc64 / xmon / xmon.c

diff --git a/arch/ppc64/xmon/xmon.c b/arch/ppc64/xmon/xmon.c
index 3c0ccb2623aeba4e89e9b43c439bf0c4ceafe1cd..05539439e6bc0eef1b020f402a7b218b4f2841cf 100644 (file)
--- a/arch/ppc64/xmon/xmon.c
+++ b/arch/ppc64/xmon/xmon.c
@@ -329,13 +329,16 @@ int xmon_core(struct pt_regs *regs, int fromipi)
                printf("cpu 0x%x: Exception %lx %s in xmon, "
                       "returning to main loop\n",
                       cpu, regs->trap, getvecname(TRAP(regs)));
+               release_output_lock();
                longjmp(xmon_fault_jmp[cpu], 1);
        }
 
        if (setjmp(recurse_jmp) != 0) {
                if (!in_xmon || !xmon_gate) {
+                       get_output_lock();
                        printf("xmon: WARNING: bad recursive fault "
                               "on cpu 0x%x\n", cpu);
+                       release_output_lock();
                        goto waiting;
                }
                secondary = !(xmon_taken && cpu == xmon_owner);
@@ -2247,7 +2250,14 @@ scanhex(unsigned long *vp)
                        tmpstr[i] = c;
                }
                tmpstr[i++] = 0;
-               *vp = kallsyms_lookup_name(tmpstr);
+               *vp = 0;
+               if (setjmp(bus_error_jmp) == 0) {
+                       catch_memory_errors = 1;
+                       sync();
+                       *vp = kallsyms_lookup_name(tmpstr);
+                       sync();
+               }
+               catch_memory_errors = 0;
                if (!(*vp)) {
                        printf("unknown symbol '%s'\n", tmpstr);
                        return 0;