Module Name: src Committed By: bouyer Date: Wed Aug 26 23:17:03 UTC 2009
Modified Files: src/sys/arch/i386/i386: db_trace.c Log Message: Do not try to get the faulting instruction if eip is 0. This makes 'trace' work when the kernel paniced because it jumped to a NULL function pointer. To generate a diff of this commit: cvs rdiff -u -r1.61 -r1.62 src/sys/arch/i386/i386/db_trace.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/arch/i386/i386/db_trace.c diff -u src/sys/arch/i386/i386/db_trace.c:1.61 src/sys/arch/i386/i386/db_trace.c:1.62 --- src/sys/arch/i386/i386/db_trace.c:1.61 Sat Mar 7 22:02:16 2009 +++ src/sys/arch/i386/i386/db_trace.c Wed Aug 26 23:17:03 2009 @@ -1,4 +1,4 @@ -/* $NetBSD: db_trace.c,v 1.61 2009/03/07 22:02:16 ad Exp $ */ +/* $NetBSD: db_trace.c,v 1.62 2009/08/26 23:17:03 bouyer Exp $ */ /* * Mach Operating System @@ -27,7 +27,7 @@ */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: db_trace.c,v 1.61 2009/03/07 22:02:16 ad Exp $"); +__KERNEL_RCSID(0, "$NetBSD: db_trace.c,v 1.62 2009/08/26 23:17:03 bouyer Exp $"); #include <sys/param.h> #include <sys/systm.h> @@ -501,7 +501,7 @@ sym = db_frame_info(frame, callpc, &name, &offset, &is_trap, &narg); - if (lastframe == 0 && sym == (db_sym_t)0) { + if (lastframe == 0 && sym == (db_sym_t)0 && callpc != 0) { /* Symbol not found, peek at code */ int instr = db_get_value(callpc, 4, false);