From nobody Mon Feb 9 21:18:52 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82AF0C77B73 for ; Fri, 26 May 2023 19:45:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237257AbjEZTpH (ORCPT ); Fri, 26 May 2023 15:45:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243271AbjEZTow (ORCPT ); Fri, 26 May 2023 15:44:52 -0400 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4D65FB6 for ; Fri, 26 May 2023 12:44:51 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id 3f1490d57ef6-bacfa4eefebso2442171276.0 for ; Fri, 26 May 2023 12:44:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1685130290; x=1687722290; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :from:to:cc:subject:date:message-id:reply-to; bh=xjbMXf/jBCxB/sH0FkQPUm1SvrJy5PH1+LA+XDb0Zps=; b=CSctNJp4S2q0DHrryM39VvBZdpM8b8CWJpmP/Q8o9UqglncEroGPepL0FsNvI60yMt B6Q4rqPzGsNOOGFkhy7F/HIDdyTq37p6I+BanaCyLBpXsrEpSal/BBzV35RTPVOpKgyh cFfFLGntgqWb/3V6Q/+Y0ktWmj/SzpUY2a32i1ViTx5PWJrC62fi76ZeO94yGOgVDx24 ULDEk4zzHWt+wEgQC6s514iQ3blhMm4ao4OhHOQDcBGYgcMSpDSu43sMHA/kXnpCVbEM 7Kfxd+HNnuObRfdIWMi3VDfD6izgY79eMmOeBiVCCB0NqIpMMQHAlOGQZXqmNqJkZEfj UCtw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685130290; x=1687722290; h=to:from:subject:references:mime-version:message-id:in-reply-to:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=xjbMXf/jBCxB/sH0FkQPUm1SvrJy5PH1+LA+XDb0Zps=; b=D+rWVXMx2NrU7QE1ZBGNrrQB5XR9Sj2xKtapq+JLmSIG7ziagJwhKvgpCiflcrfw5V ZSPB2wnKh7G1yTt/vMyh/Q9V3u4i8NuHSX6MBmXpfqaCoiRkC7PzbgAlehh0rjRitIq0 O8gpGt1d1cxR6zITcT5Z+ZzwH8SsR1HHtyytLsZD0yguHYClVbHWm2uV4vNNqCnlTiom obOg4sU+zUbztHo9P3PoXZd8BY83LxCyfd+Py3cXPu1p79YOt0qvQsoeGfL0M3TjPrIR KGk0o2WoLm70YduKYSi0gbLddjEkLghRSRA81O0eMCMolK0lcpjsx4r/4EcCNcKm4YZ+ liUg== X-Gm-Message-State: AC+VfDydkv4lwclJojtJqfTaolxlmkQ4uEI/R2WXDOSSeeBxvZPTzcyj b2Uj+WwZ8uEbF4escwMIzStdzLeZYdMw X-Google-Smtp-Source: ACHHUZ4pHyEoD9K2o0Xh8qppwGD7sUhniJqD+UOaHDb0zLqYmdzSraJe1E6XyX8y6Y9/+6eIJkuIvsZV7OGM X-Received: from irogers.svl.corp.google.com ([2620:15c:2d4:203:3b4e:312c:644:a642]) (user=irogers job=sendgmr) by 2002:a25:4296:0:b0:ba8:3e1a:3fd6 with SMTP id p144-20020a254296000000b00ba83e1a3fd6mr1107185yba.3.1685130290583; Fri, 26 May 2023 12:44:50 -0700 (PDT) Date: Fri, 26 May 2023 12:44:42 -0700 In-Reply-To: <20230526194442.2355872-1-irogers@google.com> Message-Id: <20230526194442.2355872-3-irogers@google.com> Mime-Version: 1.0 References: <20230526194442.2355872-1-irogers@google.com> X-Mailer: git-send-email 2.41.0.rc0.172.g3f132b7071-goog Subject: [PATCH v3 2/2] perf evsel: for_each_group fixes From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Ian Rogers , Adrian Hunter , Kan Liang , Sandipan Das , James Clark , Dmitrii Dolgov <9erthalion6@gmail.com>, Changbin Du , Rob Herring , Xing Zhengjun , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Address/memory sanitizer was reporting issues in evsel__group_pmu_name because the for_each_group_evsel loop didn't terminate when the head was reached, the head would then be cast and accessed as an evsel leading to invalid memory accesses. Fix for_each_group_member and for_each_group_evsel to terminate at the list head. Note, evsel__group_pmu_name no longer iterates the group, but the problem is present regardless. Fixes: 717e263fc354 ("perf report: Show group description when event group = is enabled") Signed-off-by: Ian Rogers --- tools/perf/util/evsel.h | 24 ++++++++++++++++-------- tools/perf/util/evsel_fprintf.c | 1 + 2 files changed, 17 insertions(+), 8 deletions(-) diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 6d9536ecbc7b..5e8371613565 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -459,16 +459,24 @@ static inline int evsel__group_idx(struct evsel *evse= l) } =20 /* Iterates group WITHOUT the leader. */ -#define for_each_group_member(_evsel, _leader) \ -for ((_evsel) =3D list_entry((_leader)->core.node.next, struct evsel, core= .node); \ - (_evsel) && (_evsel)->core.leader =3D=3D (&_leader->core); \ - (_evsel) =3D list_entry((_evsel)->core.node.next, struct evsel, core.= node)) +#define for_each_group_member_head(_evsel, _leader, _head) \ +for ((_evsel) =3D list_entry((_leader)->core.node.next, struct evsel, core= .node); \ + (_evsel) && &(_evsel)->core.node !=3D (_head) && \ + (_evsel)->core.leader =3D=3D &(_leader)->core; \ + (_evsel) =3D list_entry((_evsel)->core.node.next, struct evsel, core.node= )) + +#define for_each_group_member(_evsel, _leader) \ + for_each_group_member_head(_evsel, _leader, &(_leader)->evlist->core.entr= ies) =20 /* Iterates group WITH the leader. */ -#define for_each_group_evsel(_evsel, _leader) \ -for ((_evsel) =3D _leader; \ - (_evsel) && (_evsel)->core.leader =3D=3D (&_leader->core); \ - (_evsel) =3D list_entry((_evsel)->core.node.next, struct evsel, core.= node)) +#define for_each_group_evsel_head(_evsel, _leader, _head) \ +for ((_evsel) =3D _leader; \ + (_evsel) && &(_evsel)->core.node !=3D (_head) && \ + (_evsel)->core.leader =3D=3D &(_leader)->core; \ + (_evsel) =3D list_entry((_evsel)->core.node.next, struct evsel, core.node= )) + +#define for_each_group_evsel(_evsel, _leader) \ + for_each_group_evsel_head(_evsel, _leader, &(_leader)->evlist->core.entri= es) =20 static inline bool evsel__has_branch_callstack(const struct evsel *evsel) { diff --git a/tools/perf/util/evsel_fprintf.c b/tools/perf/util/evsel_fprint= f.c index 79e42d66f55b..a1655fd7ed9b 100644 --- a/tools/perf/util/evsel_fprintf.c +++ b/tools/perf/util/evsel_fprintf.c @@ -2,6 +2,7 @@ #include #include #include +#include "util/evlist.h" #include "evsel.h" #include "util/evsel_fprintf.h" #include "util/event.h" --=20 2.41.0.rc0.172.g3f132b7071-goog