From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5724DC73C46 for ; Tue, 9 Jul 2019 18:32:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1679521743 for ; Tue, 9 Jul 2019 18:32:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562697173; bh=gD9eUw8XVMmKZY43CNmn9trwoPcjnPPi8crsIN5/Hrk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nYTeVdfVxnNyLy54sm72KeWcPf+tw5JqugGBScA62DQKzyjX7riTnVIwQ7kDqNXBs QdXWdKNaMNgCxdzcw6S/ClXMFSuZPrqCbBd6Rs2oDdY4mDaSP0q0G7q5Fzs0r4WBok Gbq8TKh2ACyw5uz4sWQqmHSBkPQ1svacmZdGCzGo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729229AbfGIScv (ORCPT ); Tue, 9 Jul 2019 14:32:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:54398 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729166AbfGISct (ORCPT ); Tue, 9 Jul 2019 14:32:49 -0400 Received: from quaco.ghostprotocols.net (unknown [179.97.35.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E03C62087F; Tue, 9 Jul 2019 18:32:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562697168; bh=gD9eUw8XVMmKZY43CNmn9trwoPcjnPPi8crsIN5/Hrk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yVFqPFfW0V+zpw+3ZM2H5Lee68vZZIQpVf5MNTyl2zAZ7wwUxB8bKMQYreV9WWVBM XYsvtJ1RElCgU5EdKL4xNw1KU24r9NR0TuAPZf2jLuAq4UQjn8pzgGvMnwiLPtYs3W h1v7E/sQy8gaZXFF7QaVEI/T+64S4tO9Jpx7RK9Q= From: Arnaldo Carvalho de Melo To: Ingo Molnar , Thomas Gleixner Cc: Jiri Olsa , Namhyung Kim , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter Subject: [PATCH 15/25] perf tools: Use list_del_init() more thorougly Date: Tue, 9 Jul 2019 15:31:16 -0300 Message-Id: <20190709183126.30257-16-acme@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190709183126.30257-1-acme@kernel.org> References: <20190709183126.30257-1-acme@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Arnaldo Carvalho de Melo To allow for destructors to check if they're operating on a object still in a list, and to avoid going from use after free list entries into still valid, or even also other already removed from list entries. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-deh17ub44atyox3j90e6rksu@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-ftrace.c | 2 +- tools/perf/builtin-lock.c | 8 ++++---- tools/perf/pmu-events/jevents.c | 2 +- tools/perf/tests/switch-tracking.c | 2 +- tools/perf/ui/gtk/annotate.c | 2 +- tools/perf/util/annotate.c | 4 ++-- tools/perf/util/auxtrace.c | 4 ++-- tools/perf/util/bpf-loader.c | 2 +- tools/perf/util/call-path.c | 2 +- tools/perf/util/callchain.c | 10 +++++----- tools/perf/util/db-export.c | 4 ++-- tools/perf/util/dso.c | 2 +- tools/perf/util/evsel.c | 2 +- tools/perf/util/hist.c | 4 ++-- tools/perf/util/ordered-events.c | 6 +++--- tools/perf/util/parse-events.c | 2 +- tools/perf/util/pmu.c | 2 +- tools/perf/util/probe-event.c | 2 +- tools/perf/util/s390-cpumsf.c | 2 +- tools/perf/util/srccode.c | 2 +- tools/perf/util/symbol-elf.c | 6 +++--- tools/perf/util/thread.c | 4 ++-- 22 files changed, 38 insertions(+), 38 deletions(-) diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c index 9c228c55e1fb..66d5a6658daf 100644 --- a/tools/perf/builtin-ftrace.c +++ b/tools/perf/builtin-ftrace.c @@ -431,7 +431,7 @@ static void delete_filter_func(struct list_head *head) struct filter_entry *pos, *tmp; list_for_each_entry_safe(pos, tmp, head, list) { - list_del(&pos->list); + list_del_init(&pos->list); free(pos); } } diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index c0be44e65e9d..574e30ec6d7c 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -454,7 +454,7 @@ static int report_lock_acquire_event(struct perf_evsel *evsel, /* broken lock sequence, discard it */ ls->discard = 1; bad_hist[BROKEN_ACQUIRE]++; - list_del(&seq->list); + list_del_init(&seq->list); free(seq); goto end; default: @@ -515,7 +515,7 @@ static int report_lock_acquired_event(struct perf_evsel *evsel, /* broken lock sequence, discard it */ ls->discard = 1; bad_hist[BROKEN_ACQUIRED]++; - list_del(&seq->list); + list_del_init(&seq->list); free(seq); goto end; default: @@ -570,7 +570,7 @@ static int report_lock_contended_event(struct perf_evsel *evsel, /* broken lock sequence, discard it */ ls->discard = 1; bad_hist[BROKEN_CONTENDED]++; - list_del(&seq->list); + list_del_init(&seq->list); free(seq); goto end; default: @@ -639,7 +639,7 @@ static int report_lock_release_event(struct perf_evsel *evsel, ls->nr_release++; free_seq: - list_del(&seq->list); + list_del_init(&seq->list); free(seq); end: return 0; diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c index 287a6f10ca48..1a91a197cafb 100644 --- a/tools/perf/pmu-events/jevents.c +++ b/tools/perf/pmu-events/jevents.c @@ -407,7 +407,7 @@ static void free_arch_std_events(void) list_for_each_entry_safe(es, next, &arch_std_events, list) { FOR_ALL_EVENT_STRUCT_FIELDS(FREE_EVENT_FIELD); - list_del(&es->list); + list_del_init(&es->list); free(es); } } diff --git a/tools/perf/tests/switch-tracking.c b/tools/perf/tests/switch-tracking.c index 744409dce65f..6cdab5f4812a 100644 --- a/tools/perf/tests/switch-tracking.c +++ b/tools/perf/tests/switch-tracking.c @@ -238,7 +238,7 @@ static void free_event_nodes(struct list_head *events) while (!list_empty(events)) { node = list_entry(events->next, struct event_node, list); - list_del(&node->list); + list_del_init(&node->list); free(node); } } diff --git a/tools/perf/ui/gtk/annotate.c b/tools/perf/ui/gtk/annotate.c index df49c9ba1785..3af87c18a914 100644 --- a/tools/perf/ui/gtk/annotate.c +++ b/tools/perf/ui/gtk/annotate.c @@ -152,7 +152,7 @@ static int perf_gtk__annotate_symbol(GtkWidget *window, struct symbol *sym, gtk_container_add(GTK_CONTAINER(window), view); list_for_each_entry_safe(pos, n, ¬es->src->source, al.node) { - list_del(&pos->al.node); + list_del_init(&pos->al.node); disasm_line__free(pos); } diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index ef0e6028684c..ac9ad2330f93 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -1586,7 +1586,7 @@ static void delete_last_nop(struct symbol *sym) return; } - list_del(&dl->al.node); + list_del_init(&dl->al.node); disasm_line__free(dl); } } @@ -2463,7 +2463,7 @@ void annotated_source__purge(struct annotated_source *as) struct annotation_line *al, *n; list_for_each_entry_safe(al, n, &as->source, node) { - list_del(&al->node); + list_del_init(&al->node); disasm_line__free(disasm_line(al)); } } diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index b033a43dfe3b..ec0af36697c4 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -408,7 +408,7 @@ void auxtrace_queues__free(struct auxtrace_queues *queues) buffer = list_entry(queues->queue_array[i].head.next, struct auxtrace_buffer, list); - list_del(&buffer->list); + list_del_init(&buffer->list); auxtrace_buffer__free(buffer); } } @@ -612,7 +612,7 @@ void auxtrace_index__free(struct list_head *head) struct auxtrace_index *auxtrace_index, *n; list_for_each_entry_safe(auxtrace_index, n, head, list) { - list_del(&auxtrace_index->list); + list_del_init(&auxtrace_index->list); free(auxtrace_index); } } diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c index 93d0f239ad4f..c61974a50aa5 100644 --- a/tools/perf/util/bpf-loader.c +++ b/tools/perf/util/bpf-loader.c @@ -829,7 +829,7 @@ static void bpf_map_op__delete(struct bpf_map_op *op) { if (!list_empty(&op->list)) - list_del(&op->list); + list_del_init(&op->list); if (op->key_type == BPF_MAP_KEY_RANGES) parse_events__clear_array(&op->k.array); free(op); diff --git a/tools/perf/util/call-path.c b/tools/perf/util/call-path.c index e8a80c41cba3..5c60b8be1cf6 100644 --- a/tools/perf/util/call-path.c +++ b/tools/perf/util/call-path.c @@ -40,7 +40,7 @@ void call_path_root__free(struct call_path_root *cpr) struct call_path_block *pos, *n; list_for_each_entry_safe(pos, n, &cpr->blocks, node) { - list_del(&pos->node); + list_del_init(&pos->node); free(pos); } free(cpr); diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index b4af25dca5eb..8d7d8f62fcca 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -636,7 +636,7 @@ add_child(struct callchain_node *parent, struct callchain_list *call, *tmp; list_for_each_entry_safe(call, tmp, &new->val, list) { - list_del(&call->list); + list_del_init(&call->list); map__zput(call->ms.map); free(call); } @@ -1002,7 +1002,7 @@ merge_chain_branch(struct callchain_cursor *cursor, callchain_cursor_append(cursor, list->ip, list->ms.map, list->ms.sym, false, NULL, 0, 0, 0, list->srcline); - list_del(&list->list); + list_del_init(&list->list); map__zput(list->ms.map); free(list); } @@ -1453,13 +1453,13 @@ static void free_callchain_node(struct callchain_node *node) struct rb_node *n; list_for_each_entry_safe(list, tmp, &node->parent_val, list) { - list_del(&list->list); + list_del_init(&list->list); map__zput(list->ms.map); free(list); } list_for_each_entry_safe(list, tmp, &node->val, list) { - list_del(&list->list); + list_del_init(&list->list); map__zput(list->ms.map); free(list); } @@ -1544,7 +1544,7 @@ int callchain_node__make_parent_list(struct callchain_node *node) out: list_for_each_entry_safe(chain, new, &head, list) { - list_del(&chain->list); + list_del_init(&chain->list); map__zput(chain->ms.map); free(chain); } diff --git a/tools/perf/util/db-export.c b/tools/perf/util/db-export.c index 3f2694ccfac7..2394c7506abe 100644 --- a/tools/perf/util/db-export.c +++ b/tools/perf/util/db-export.c @@ -34,7 +34,7 @@ static int db_export__deferred(struct db_export *dbe) de = list_entry(dbe->deferred.next, struct deferred_export, node); err = dbe->export_comm(dbe, de->comm); - list_del(&de->node); + list_del_init(&de->node); free(de); if (err) return err; @@ -50,7 +50,7 @@ static void db_export__free_deferred(struct db_export *dbe) while (!list_empty(&dbe->deferred)) { de = list_entry(dbe->deferred.next, struct deferred_export, node); - list_del(&de->node); + list_del_init(&de->node); free(de); } } diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index ebacf07fc9ee..ebc9d46c15a7 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -434,7 +434,7 @@ static void dso__list_add(struct dso *dso) static void dso__list_del(struct dso *dso) { - list_del(&dso->data.open_entry); + list_del_init(&dso->data.open_entry); WARN_ONCE(dso__data_open_cnt <= 0, "DSO data fd counter out of bounds."); dso__data_open_cnt--; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 7ede674edf07..ebb46da4dfe5 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1298,7 +1298,7 @@ static void perf_evsel__free_config_terms(struct perf_evsel *evsel) struct perf_evsel_config_term *term, *h; list_for_each_entry_safe(term, h, &evsel->config_terms, list) { - list_del(&term->list); + list_del_init(&term->list); free(term); } } diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 9b0ee0ef0f44..f24fd1954f6c 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -2741,10 +2741,10 @@ static void hists_evsel__exit(struct perf_evsel *evsel) list_for_each_entry_safe(node, tmp, &hists->hpp_formats, list) { perf_hpp_list__for_each_format_safe(&node->hpp, fmt, pos) { - list_del(&fmt->list); + list_del_init(&fmt->list); free(fmt); } - list_del(&node->list); + list_del_init(&node->list); free(node); } } diff --git a/tools/perf/util/ordered-events.c b/tools/perf/util/ordered-events.c index 989fed6f43b5..bb5f34b7ab44 100644 --- a/tools/perf/util/ordered-events.c +++ b/tools/perf/util/ordered-events.c @@ -138,7 +138,7 @@ static struct ordered_event *alloc_event(struct ordered_events *oe, if (!list_empty(cache)) { new = list_entry(cache->next, struct ordered_event, list); - list_del(&new->list); + list_del_init(&new->list); } else if (oe->buffer) { new = &oe->buffer->event[oe->buffer_idx]; if (++oe->buffer_idx == MAX_SAMPLE_BUFFER) @@ -394,13 +394,13 @@ void ordered_events__free(struct ordered_events *oe) * yet, we need to free only allocated ones ... */ if (oe->buffer) { - list_del(&oe->buffer->list); + list_del_init(&oe->buffer->list); ordered_events_buffer__free(oe->buffer, oe->buffer_idx, oe); } /* ... and continue with the rest */ list_for_each_entry_safe(buffer, tmp, &oe->to_free, list) { - list_del(&buffer->list); + list_del_init(&buffer->list); ordered_events_buffer__free(buffer, MAX_SAMPLE_BUFFER, oe); } } diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index aa439853f20a..371ff3aee769 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -652,7 +652,7 @@ static int add_bpf_event(const char *group, const char *event, int fd, pr_debug("Failed to add BPF event %s:%s\n", group, event); list_for_each_entry_safe(evsel, tmp, &new_evsels, node) { - list_del(&evsel->node); + list_del_init(&evsel->node); perf_evsel__delete(evsel); } return err; diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 12b677902fbc..f32b710347db 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1245,7 +1245,7 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, info->metric_expr = alias->metric_expr; info->metric_name = alias->metric_name; - list_del(&term->list); + list_del_init(&term->list); free(term); } diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 0a57b316c4dd..0c3b55d0617d 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2333,7 +2333,7 @@ static void kprobe_blacklist__delete(struct list_head *blacklist) while (!list_empty(blacklist)) { node = list_first_entry(blacklist, struct kprobe_blacklist_node, list); - list_del(&node->list); + list_del_init(&node->list); zfree(&node->symbol); free(node); } diff --git a/tools/perf/util/s390-cpumsf.c b/tools/perf/util/s390-cpumsf.c index cca9cb851d02..83d2e149ef19 100644 --- a/tools/perf/util/s390-cpumsf.c +++ b/tools/perf/util/s390-cpumsf.c @@ -756,7 +756,7 @@ static int s390_cpumsf_run_decoder(struct s390_cpumsf_queue *sfq, */ if (err) { sfq->buffer = NULL; - list_del(&buffer->list); + list_del_init(&buffer->list); auxtrace_buffer__free(buffer); if (err > 0) /* Buffer done, no error */ err = 0; diff --git a/tools/perf/util/srccode.c b/tools/perf/util/srccode.c index 688a85a3d454..adfcf1ff464c 100644 --- a/tools/perf/util/srccode.c +++ b/tools/perf/util/srccode.c @@ -83,7 +83,7 @@ static void fill_lines(char **lines, int maxline, char *map, int maplen) static void free_srcfile(struct srcfile *sf) { - list_del(&sf->nd); + list_del_init(&sf->nd); hlist_del(&sf->hash_nd); map_total_sz -= sf->maplen; munmap(sf->map, sf->maplen); diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index 1d5447594f5d..7d504dc22108 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -1478,7 +1478,7 @@ static void kcore_copy__free_phdrs(struct kcore_copy_info *kci) struct phdr_data *p, *tmp; list_for_each_entry_safe(p, tmp, &kci->phdrs, node) { - list_del(&p->node); + list_del_init(&p->node); free(p); } } @@ -1501,7 +1501,7 @@ static void kcore_copy__free_syms(struct kcore_copy_info *kci) struct sym_data *s, *tmp; list_for_each_entry_safe(s, tmp, &kci->syms, node) { - list_del(&s->node); + list_del_init(&s->node); free(s); } } @@ -2252,7 +2252,7 @@ int cleanup_sdt_note_list(struct list_head *sdt_notes) int nr_free = 0; list_for_each_entry_safe(pos, tmp, sdt_notes, note_list) { - list_del(&pos->note_list); + list_del_init(&pos->note_list); zfree(&pos->name); zfree(&pos->provider); free(pos); diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index bbfb9c767f5f..873ab505ca80 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -93,14 +93,14 @@ void thread__delete(struct thread *thread) down_write(&thread->namespaces_lock); list_for_each_entry_safe(namespaces, tmp_namespaces, &thread->namespaces_list, list) { - list_del(&namespaces->list); + list_del_init(&namespaces->list); namespaces__free(namespaces); } up_write(&thread->namespaces_lock); down_write(&thread->comm_lock); list_for_each_entry_safe(comm, tmp_comm, &thread->comm_list, list) { - list_del(&comm->list); + list_del_init(&comm->list); comm__free(comm); } up_write(&thread->comm_lock); -- 2.21.0