From 7d21635ac5c78abe162fb3f56b37c30bcbfa019f Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Wed, 30 Mar 2011 18:25:41 +0900 Subject: [PATCH] perf probe: Fix to ensure function declared file Fix to ensure function declared file matches given file name. This fixes a potential bug. As I've commented on Lin Ming's fastpath enhancement, decl_file should be checked on each probe point if user gives a probe point as func@file. Cc: 2nddept-manager@sdl.hitachi.co.jp Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Lin Ming Cc: Peter Zijlstra LKML-Reference: <20110330092541.2132.3584.stgit@ltc236.sdl.hitachi.co.jp> Signed-off-by: Masami Hiramatsu Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-finder.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 194f9e2a328..3bcd140b454 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -1395,6 +1395,10 @@ static int probe_point_search_cb(Dwarf_Die *sp_die, void *data) !die_compare_name(sp_die, pp->function)) return DWARF_CB_OK; + /* Check declared file */ + if (pp->file && strtailcmp(pp->file, dwarf_decl_file(sp_die))) + return DWARF_CB_OK; + pf->fname = dwarf_decl_file(sp_die); if (pp->line) { /* Function relative line */ dwarf_decl_line(sp_die, &pf->lno); @@ -1840,6 +1844,10 @@ static int line_range_search_cb(Dwarf_Die *sp_die, void *data) struct line_finder *lf = param->data; struct line_range *lr = lf->lr; + /* Check declared file */ + if (lr->file && strtailcmp(lr->file, dwarf_decl_file(sp_die))) + return DWARF_CB_OK; + if (dwarf_tag(sp_die) == DW_TAG_subprogram && die_compare_name(sp_die, lr->function)) { lf->fname = dwarf_decl_file(sp_die); -- 2.20.1