Add a backtrace to the "fpudna in kernel mode!" case, to help track down

where this comes from. Reviewed by: bde
svn path=/head/; revision=197455
2009-09-24 14:26:42 +00:00 · 2009-09-24 14:26:42 +00:00 · 43721b6e84 · 2020-12-20 02:59:44 +00:00
commit 43721b6e84
parent 249e7759ac
1 changed files with 4 additions and 1 deletions
--- a/sys/amd64/amd64/trap.c
+++ b/sys/amd64/amd64/trap.c
@ -505,8 +505,11 @@ trap(struct trapframe *frame)
 			 * XXX this should be fatal unless the kernel has
 			 * registered such use.
 			 */
-			fpudna();
 			printf("fpudna in kernel mode!\n");
+#ifdef KDB
+			kdb_backtrace();
+#endif
+			fpudna();
 			goto out;

 		case T_STKFLT:		/* stack fault */