With the latest PPC64 NMI IPI changes, crash_ipi_callback is found

multiple times on the stack of active non-panic tasks. Ensure that the symbol reference relates to an actual backtrace stack frame. ([email protected])
d3dave · Dec 13, 2017 · ed2abb4 · ed2abb4
1 parent 264f22d
commit ed2abb4
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/ppc64.c b/ppc64.c
@@ -2337,6 +2337,14 @@ ppc64_get_dumpfile_stack_frame(struct bt_info *bt_in, ulong *nip, ulong *ksp)
                         *nip = *up;
                         *ksp = bt->stackbase + 
 				((char *)(up) - 16 - bt->stackbuf);
+			/*
+			 * Check whether this symbol relates to a
+			 * backtrace or not
+			 */
+			ur_ksp =  *(ulong *)&bt->stackbuf[(*ksp) - bt->stackbase];
+			if (!INSTACK(ur_ksp, bt))
+				continue;
+
                         return TRUE;
                 }
 	}