From patchwork Thu Dec 23 19:50:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Augusto von Dentz X-Patchwork-Id: 12698619 X-Patchwork-Delegate: luiz.dentz@gmail.com 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 F35EDC433EF for ; Thu, 23 Dec 2021 19:50:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350168AbhLWTuG (ORCPT ); Thu, 23 Dec 2021 14:50:06 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33552 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244778AbhLWTuF (ORCPT ); Thu, 23 Dec 2021 14:50:05 -0500 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C2E1CC061401 for ; Thu, 23 Dec 2021 11:50:05 -0800 (PST) Received: by mail-pj1-x1031.google.com with SMTP id z9-20020a17090a7b8900b001b13558eadaso9623476pjc.4 for ; Thu, 23 Dec 2021 11:50:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=rF5TA28ck5w3dk8M5Y58w8qVzCZxMdP79icwEG2FO2w=; b=JSP+HE05UA37RkCZjfxk3zf+9G6K1M7xmfNLsvi54txAcWGEzkqPk8W+1WWob33Jpt V+yfieJ0Nz6Neg/V9AhgQuhJvAGJPYsSLqb9MWSDaiRSD62NoaiEZMDF3UHZGF7Mq3ll xQuhI4/t6BwCtGOhSPt0lGYy8OLrTQynGYwK7Za0/B5MTCMRIV1i4MDalW1LOZLE/ycl jVvE3W9TV04O6vcGz0wTsABe8wERSzZNMQYk2O7uj/1qDe8CC0zMMpw+Vl2GUwHOrcIw 3aDIqtFai57tKxka+k56rLkBQJs0Zhywpgwuv28X4h9d+h9vL/3kaea+75+Lj2Zc16yE ymkg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=rF5TA28ck5w3dk8M5Y58w8qVzCZxMdP79icwEG2FO2w=; b=fgHcBd0x0iesy682qqJ+0lsWvogcNjbGf2aKAFHk9F1Aj+F+q96tx5dttn6bQidJXP Qi4F2AhRuJZMMpFe7nruLn3VPlS7xCUpPtMVD+VeKWhd092TMJzS0hd5EgswxK0os3dq vlQ7b4tx4lobHpQpIMkXHPgj1Rj1pSdM2rnbzHX7UyddRkSwjmI3PXV5Mn5JGfNHQkGu Eha+Wjz4LmWREdz/ZNtOFgumas+9/+CpRLDkTGYmBd8+rxKUVdj4w/ry7M/BKaI7aOFW VXnLUQZXdHZxNuNFj+phTredp2y89MIf4OvI7RMsnMJw2OfFIGBggT7rJq7CuEnCbrkZ b1cw== X-Gm-Message-State: AOAM530hOst1RIlAQuCl67IhWF2Z/w20J88m66LJNThX2tsupKVsNXsM 3jkCfeXxjeNPOd7tGWAegRpZIw6ITFM= X-Google-Smtp-Source: ABdhPJzslqNI975n9R8UuxQZ3rzZWApmeCmkd4s+X65aayFU7F1MQtDiNZhb9w1s+q03AB5xpATj3Q== X-Received: by 2002:a17:90a:d155:: with SMTP id t21mr4274232pjw.29.1640289004979; Thu, 23 Dec 2021 11:50:04 -0800 (PST) Received: from lvondent-mobl4.intel.com (c-71-56-157-77.hsd1.or.comcast.net. [71.56.157.77]) by smtp.gmail.com with ESMTPSA id mu2sm6631894pjb.43.2021.12.23.11.50.04 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Dec 2021 11:50:04 -0800 (PST) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [PATCH v4 1/4] build: Add sanitizer options Date: Thu, 23 Dec 2021 11:50:00 -0800 Message-Id: <20211223195003.1647434-1-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.33.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Luiz Augusto von Dentz Build using Address Sanitizer (asan), Leak Sanitizer (lsan), or Undefined Behavior Sanitizer (ubsan) by using one of these options for the configure script: --enable-asan --enable-lsan --enable-ubsan For each of these to work, the compiler must support the requested sanitizer and the requisite libraries must be installed (libasan, liblsan, libubsan). --- v2: Attempt to fix CI findings v3: Yet again attempt to fix CI findings, disable running tests with valgrind if either asan or lsan are enabled are they are likely going to conflict. v4: Yet another attempt to fix CI findings. Makefile.am | 8 +++++- acinclude.m4 | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++ configure.ac | 7 ++++- 3 files changed, 90 insertions(+), 2 deletions(-) diff --git a/Makefile.am b/Makefile.am index 993168f00..308f13c50 100644 --- a/Makefile.am +++ b/Makefile.am @@ -24,7 +24,7 @@ pkgincludedir = $(includedir)/bluetooth pkginclude_HEADERS = -AM_CFLAGS = $(WARNING_CFLAGS) $(MISC_CFLAGS) $(UDEV_CFLAGS) $(LIBEBOOK_CFLAGS) \ +AM_CFLAGS = $(MISC_CFLAGS) $(WARNING_CFLAGS) $(UDEV_CFLAGS) $(LIBEBOOK_CFLAGS) \ $(LIBEDATASERVER_CFLAGS) $(ell_cflags) AM_LDFLAGS = $(MISC_LDFLAGS) @@ -243,6 +243,8 @@ src_libshared_glib_la_SOURCES = $(shared_sources) \ src/shared/mainloop-notify.h \ src/shared/mainloop-notify.c \ src/shared/tester.c +src_libshared_glib_la_LDFLAGS = $(AM_LDFLAGS) +src_libshared_glib_la_CFLAGS = $(AM_CFLAGS) src_libshared_mainloop_la_SOURCES = $(shared_sources) \ src/shared/io-mainloop.c \ @@ -250,6 +252,8 @@ src_libshared_mainloop_la_SOURCES = $(shared_sources) \ src/shared/mainloop.h src/shared/mainloop.c \ src/shared/mainloop-notify.h \ src/shared/mainloop-notify.c +src_libshared_mainloop_la_LDFLAGS = $(AM_LDFLAGS) +src_libshared_mainloop_la_CFLAGS = $(AM_CFLAGS) if LIBSHARED_ELL src_libshared_ell_la_SOURCES = $(shared_sources) \ @@ -257,6 +261,8 @@ src_libshared_ell_la_SOURCES = $(shared_sources) \ src/shared/timeout-ell.c \ src/shared/mainloop.h \ src/shared/mainloop-ell.c +src_libshared_ell_la_LDFLAGS = $(AM_LDFLAGS) +src_libshared_ell_la_CFLAGS = $(AM_CFLAGS) endif attrib_sources = attrib/att.h attrib/att-database.h attrib/att.c \ diff --git a/acinclude.m4 b/acinclude.m4 index 529848357..b388dfc11 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -10,6 +10,45 @@ AC_DEFUN([AC_PROG_CC_PIE], [ ]) ]) +AC_DEFUN([AC_PROG_CC_ASAN], [ + AC_CACHE_CHECK([whether ${CC-cc} accepts -fsanitize=address], + ac_cv_prog_cc_asan, [ + echo 'void f(){}' > asan.c + if test -z "`${CC-cc} -fsanitize=address -c asan.c 2>&1`"; then + ac_cv_prog_cc_asan=yes + else + ac_cv_prog_cc_asan=no + fi + rm -rf asan* + ]) +]) + +AC_DEFUN([AC_PROG_CC_LSAN], [ + AC_CACHE_CHECK([whether ${CC-cc} accepts -fsanitize=leak], + ac_cv_prog_cc_lsan, [ + echo 'void f(){}' > lsan.c + if test -z "`${CC-cc} -fsanitize=leak -c lsan.c 2>&1`"; then + ac_cv_prog_cc_lsan=yes + else + ac_cv_prog_cc_lsan=no + fi + rm -rf lsan* + ]) +]) + +AC_DEFUN([AC_PROG_CC_UBSAN], [ + AC_CACHE_CHECK([whether ${CC-cc} accepts -fsanitize=undefined], + ac_cv_prog_cc_ubsan, [ + echo 'void f(){}' > ubsan.c + if test -z "`${CC-cc} -fsanitize=undefined -c ubsan.c 2>&1`"; then + ac_cv_prog_cc_ubsan=yes + else + ac_cv_prog_cc_ubsan=no + fi + rm -rf ubsan* + ]) +]) + AC_DEFUN([COMPILER_FLAGS], [ with_cflags="" if (test "$USE_MAINTAINER_MODE" = "yes"); then @@ -38,6 +77,44 @@ AC_DEFUN([MISC_FLAGS], [ misc_cflags="$misc_cflags -O0" fi ]) + AC_ARG_ENABLE(asan, AC_HELP_STRING([--enable-asan], + [enable linking with address sanitizer]), [ + save_LIBS=$LIBS + AC_CHECK_LIB(asan, _init) + LIBS=$save_LIBS + if (test "${enableval}" = "yes" && + test "${ac_cv_lib_asan__init}" = "yes" && + test "${ac_cv_prog_cc_asan}" = "yes"); then + misc_cflags="$misc_cflags -fsanitize=address"; + misc_ldflags="$misc_ldflags -fsanitize=address" + AC_SUBST([ASAN_LIB], ${ac_cv_lib_asan__init}) + fi + ]) + AC_ARG_ENABLE(lsan, AC_HELP_STRING([--enable-lsan], + [enable linking with address sanitizer]), [ + save_LIBS=$LIBS + AC_CHECK_LIB(lsan, _init) + LIBS=$save_LIBS + if (test "${enableval}" = "yes" && + test "${ac_cv_lib_lsan__init}" = "yes" && + test "${ac_cv_prog_cc_lsan}" = "yes"); then + misc_cflags="$misc_cflags -fsanitize=leak"; + misc_ldflags="$misc_ldflags -fsanitize=leak" + AC_SUBST([ASAN_LIB], ${ac_cv_lib_lsan__init}) + fi + ]) + AC_ARG_ENABLE(ubsan, AC_HELP_STRING([--enable-ubsan], + [enable linking with address sanitizer]), [ + save_LIBS=$LIBS + AC_CHECK_LIB(ubsan, _init) + LIBS=$save_LIBS + if (test "${enableval}" = "yes" && + test "${ac_cv_lib_ubsan__init}" = "yes" && + test "${ac_cv_prog_cc_ubsan}" = "yes"); then + misc_cflags="$misc_cflags -fsanitize=undefined"; + misc_ldflags="$misc_ldflags -fsanitize=undefined"; + fi + ]) AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug], [enable compiling with debugging information]), [ if (test "${enableval}" = "yes" && diff --git a/configure.ac b/configure.ac index 2674e30d3..849e1db46 100644 --- a/configure.ac +++ b/configure.ac @@ -23,6 +23,9 @@ AC_C_RESTRICT AC_PROG_CC AM_PROG_CC_C_O AC_PROG_CC_PIE +AC_PROG_CC_ASAN +AC_PROG_CC_LSAN +AC_PROG_CC_UBSAN AC_PROG_INSTALL AC_PROG_MKDIR_P @@ -40,10 +43,12 @@ if (test "$USE_MAINTAINER_MODE" = "yes"); then fi AM_CONDITIONAL(COVERAGE, test "${enable_coverage}" = "yes") AM_CONDITIONAL(DBUS_RUN_SESSION, test "${enable_dbus_run_session}" = "yes") -AM_CONDITIONAL(VALGRIND, test "${enable_valgrind}" = "yes") MISC_FLAGS +AM_CONDITIONAL(VALGRIND, test "${enable_valgrind}" = "yes" && + test "$ASAN_LIB" != "yes" && test "LSAN_LIB" != "yes") + AC_ARG_ENABLE(threads, AC_HELP_STRING([--enable-threads], [enable threading support]), [enable_threads=${enableval}]) From patchwork Thu Dec 23 19:50:01 2021 Content-Type: text/plain; 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[71.56.157.77]) by smtp.gmail.com with ESMTPSA id mu2sm6631894pjb.43.2021.12.23.11.50.05 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Dec 2021 11:50:05 -0800 (PST) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [PATCH v4 2/4] build: Fix build when sanitizer are enabled Date: Thu, 23 Dec 2021 11:50:01 -0800 Message-Id: <20211223195003.1647434-2-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211223195003.1647434-1-luiz.dentz@gmail.com> References: <20211223195003.1647434-1-luiz.dentz@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Luiz Augusto von Dentz This fixes various issues found when sanitizers are enabled. --- monitor/packet.c | 3 ++- peripheral/main.c | 2 +- profiles/audio/a2dp.c | 5 ++++- profiles/audio/avctp.c | 2 +- profiles/network/bnep.c | 4 ++-- src/shared/gatt-server.c | 2 -- tools/mesh-gatt/util.c | 11 ++++++++--- tools/test-runner.c | 2 +- 8 files changed, 19 insertions(+), 12 deletions(-) diff --git a/monitor/packet.c b/monitor/packet.c index 71f711dc5..397000644 100644 --- a/monitor/packet.c +++ b/monitor/packet.c @@ -330,7 +330,8 @@ static void print_packet(struct timeval *tv, struct ucred *cred, char ident, if ((filter_mask & PACKET_FILTER_SHOW_INDEX) && index != HCI_DEV_NONE) { if (use_color()) { - n = sprintf(ts_str + ts_pos, "%s", COLOR_INDEX_LABEL); + n = snprintf(ts_str + ts_pos, sizeof(ts_str) - ts_pos, + "%s", COLOR_INDEX_LABEL); if (n > 0) ts_pos += n; } diff --git a/peripheral/main.c b/peripheral/main.c index 0f5210403..91adb45fc 100644 --- a/peripheral/main.c +++ b/peripheral/main.c @@ -73,7 +73,7 @@ static void prepare_filesystem(void) if (!is_init) return; - for (i = 0; mount_table[i].fstype; i++) { + for (i = 0; mount_table[i].fstype && mount_table[i].target; i++) { struct stat st; if (lstat(mount_table[i].target, &st) < 0) { diff --git a/profiles/audio/a2dp.c b/profiles/audio/a2dp.c index eba2f9822..d0808c77a 100644 --- a/profiles/audio/a2dp.c +++ b/profiles/audio/a2dp.c @@ -1338,9 +1338,12 @@ static gboolean a2dp_reconfigure(gpointer data) if (setup->rsep) { cap = avdtp_get_codec(setup->rsep->sep); rsep_codec = (struct avdtp_media_codec_capability *) cap->data; + /* Check that codec really match after closing */ + if (sep->codec != rsep_codec->media_codec_type) + setup->rsep = NULL; } - if (!setup->rsep || sep->codec != rsep_codec->media_codec_type) + if (!setup->rsep) setup->rsep = find_remote_sep(setup->chan, sep); if (!setup->rsep) { diff --git a/profiles/audio/avctp.c b/profiles/audio/avctp.c index 9113b5ddc..64d1a8504 100644 --- a/profiles/audio/avctp.c +++ b/profiles/audio/avctp.c @@ -1177,7 +1177,7 @@ static int uinput_create(struct btd_device *device, const char *name, memset(&dev, 0, sizeof(dev)); if (name) { - strncpy(dev.name, name, UINPUT_MAX_NAME_SIZE); + strncpy(dev.name, name, UINPUT_MAX_NAME_SIZE - 1); dev.name[UINPUT_MAX_NAME_SIZE - 1] = '\0'; } diff --git a/profiles/network/bnep.c b/profiles/network/bnep.c index f94f1da8a..54b950058 100644 --- a/profiles/network/bnep.c +++ b/profiles/network/bnep.c @@ -108,7 +108,7 @@ static int bnep_connadd(int sk, uint16_t role, char *dev) struct bnep_connadd_req req; memset(&req, 0, sizeof(req)); - strncpy(req.device, dev, 16); + strncpy(req.device, dev, 15); req.device[15] = '\0'; req.sock = sk; @@ -345,7 +345,7 @@ struct bnep *bnep_new(int sk, uint16_t local_role, uint16_t remote_role, session->io = g_io_channel_unix_new(dup_fd); session->src = local_role; session->dst = remote_role; - strncpy(session->iface, iface, 16); + strncpy(session->iface, iface, 15); session->iface[15] = '\0'; g_io_channel_set_close_on_unref(session->io, TRUE); diff --git a/src/shared/gatt-server.c b/src/shared/gatt-server.c index 9beec44be..776e5ce2b 100644 --- a/src/shared/gatt-server.c +++ b/src/shared/gatt-server.c @@ -1119,8 +1119,6 @@ static void read_multiple_cb(struct bt_att_chan *chan, uint8_t opcode, } data = read_mult_data_new(server, chan, opcode, length / 2); - if (!data) - goto error; for (i = 0; i < data->num_handles; i++) data->handles[i] = get_le16(pdu + i * 2); diff --git a/tools/mesh-gatt/util.c b/tools/mesh-gatt/util.c index e845c4112..eb8b8eb29 100644 --- a/tools/mesh-gatt/util.c +++ b/tools/mesh-gatt/util.c @@ -41,9 +41,14 @@ void print_byte_array(const char *prefix, const void *ptr, int len) char *line, *bytes; int i; - line = g_malloc(strlen(prefix) + (16 * 3) + 2); - sprintf(line, "%s ", prefix); - bytes = line + strlen(prefix) + 1; + if (prefix) { + line = g_malloc(strlen(prefix) + (16 * 3) + 2); + sprintf(line, "%s ", prefix); + bytes = line + strlen(prefix) + 1; + } else { + line = g_malloc((16 * 3) + 2); + bytes = line + 1; + } for (i = 0; i < len; ++i) { sprintf(bytes, "%2.2x ", data[i]); diff --git a/tools/test-runner.c b/tools/test-runner.c index eac120f4a..71cc0d2df 100644 --- a/tools/test-runner.c +++ b/tools/test-runner.c @@ -136,7 +136,7 @@ static void prepare_sandbox(void) { int i; - for (i = 0; mount_table[i].fstype; i++) { + for (i = 0; mount_table[i].fstype && mount_table[i].target; i++) { struct stat st; if (lstat(mount_table[i].target, &st) < 0) { From patchwork Thu Dec 23 19:50:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Augusto von Dentz X-Patchwork-Id: 12698618 X-Patchwork-Delegate: luiz.dentz@gmail.com 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 D08B4C433F5 for ; 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[71.56.157.77]) by smtp.gmail.com with ESMTPSA id mu2sm6631894pjb.43.2021.12.23.11.50.05 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Dec 2021 11:50:05 -0800 (PST) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [PATCH v4 3/4] bootstrap-configure: Enable sanitizer options Date: Thu, 23 Dec 2021 11:50:02 -0800 Message-Id: <20211223195003.1647434-3-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211223195003.1647434-1-luiz.dentz@gmail.com> References: <20211223195003.1647434-1-luiz.dentz@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Luiz Augusto von Dentz This makes bootstrap-configure enables all sanitizers. --- bootstrap-configure | 3 +++ 1 file changed, 3 insertions(+) diff --git a/bootstrap-configure b/bootstrap-configure index a34be8320..8172840d5 100755 --- a/bootstrap-configure +++ b/bootstrap-configure @@ -28,6 +28,9 @@ fi --enable-btpclient \ --enable-logger \ --enable-pie \ + --enable-asan \ + --enable-lsan \ + --enable-ubsan \ --enable-cups \ --enable-library \ --enable-admin \ From patchwork Thu Dec 23 19:50:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Augusto von Dentz X-Patchwork-Id: 12698617 X-Patchwork-Delegate: luiz.dentz@gmail.com 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 82778C4332F for ; Thu, 23 Dec 2021 19:50:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350171AbhLWTuI (ORCPT ); Thu, 23 Dec 2021 14:50:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350174AbhLWTuH (ORCPT ); Thu, 23 Dec 2021 14:50:07 -0500 Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 60CC1C061401 for ; Thu, 23 Dec 2021 11:50:07 -0800 (PST) Received: by mail-pl1-x636.google.com with SMTP id w7so4584103plp.13 for ; Thu, 23 Dec 2021 11:50:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=9ihzvmfL1JKR63zuErQK+qR+qt0qyup6+/MlQjMaiNo=; b=OTkXxK2yRnb1cD636Xr0YoBRLHOtcwQJa9+RSicFMC7EGY39ZwXS1Nqqxs18P/1ybP EDtaP4okx25FPYoeXixSUaS9g+sGFQ1pCohrNjRs3o4XKbcS8zsUrG5CTBWPZsSjcuiz dQY1Ym6z+Nxjq6IbwTDNlD1QwSxor+xSANxjpH+RH1V726s8iCBlb67ifx010Ol+xHs0 2gNi5fiQnlcGU7kjjFuE8IFzutKX+T7sFUfaBn/mmsm8tvDgeiNXOuS89JcDedQlQ+Lg xLel99zKW3fQx+VYo+nl+WfgnwvYpGT6WSTnhkd6RI9fI+y0RSQ46thR7hexIz//n5wC /GOA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=9ihzvmfL1JKR63zuErQK+qR+qt0qyup6+/MlQjMaiNo=; b=jzkTHzo/Wq2yULtRls/yGIqL7X+EMEsPl7vdeQO+JYEKxDjU/vOaIOiX4Us793mizk woEJjcvUFJc24JTaR+NZKwv8AteRiTRuib/Ij3n3mjBPzdOtRiXgUWcQ/R6j1V64YcrB PUv7BVcGa+rVAyni7qpDfW6uEvx8qVSt93xzJnIdpEv+C/BplqJAup/kohHwsqNVxvYW Qn6/5gVG7N3+K4vDorhwdgrkWQWyAguiOOolnprFtZxm7RAM+66O0dpW64oNQDu/FwdT snT2fESiF434k4HinGbzLWwX/tVnqNUOW5oU2n2gZDfU/Xw5kVlnDC1OOsW1GzimlDUx pgKg== X-Gm-Message-State: AOAM530GoVbG7W5yJqabj4NhNlNDdAWccjQMHHutwmxyCYD5NtVvXlTY CX/EcF2csScQFSM8El8HB8T8nvgXs0s= X-Google-Smtp-Source: ABdhPJxYarq5ZTuDZXV1fTBsMOiFKCOpQXQ9rwEAMrd0i9nitC8InIUOmgXgH4pTlePCfuTpcIphWw== X-Received: by 2002:a17:90b:4390:: with SMTP id in16mr4228620pjb.14.1640289006584; Thu, 23 Dec 2021 11:50:06 -0800 (PST) Received: from lvondent-mobl4.intel.com (c-71-56-157-77.hsd1.or.comcast.net. [71.56.157.77]) by smtp.gmail.com with ESMTPSA id mu2sm6631894pjb.43.2021.12.23.11.50.06 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 23 Dec 2021 11:50:06 -0800 (PST) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [PATCH v4 4/4] gattrib: Fix passing NULL to memcpy Date: Thu, 23 Dec 2021 11:50:03 -0800 Message-Id: <20211223195003.1647434-4-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211223195003.1647434-1-luiz.dentz@gmail.com> References: <20211223195003.1647434-1-luiz.dentz@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Luiz Augusto von Dentz This fixes the following runtime error: attrib/gattrib.c:198:2: runtime error: null pointer passed as argument 2, which is declared to never be null --- attrib/gattrib.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/attrib/gattrib.c b/attrib/gattrib.c index 270a37ebe..041b9d289 100644 --- a/attrib/gattrib.c +++ b/attrib/gattrib.c @@ -195,7 +195,9 @@ static uint8_t *construct_full_pdu(uint8_t opcode, const void *pdu, return NULL; buf[0] = opcode; - memcpy(buf + 1, pdu, length); + + if (pdu && length) + memcpy(buf + 1, pdu, length); return buf; }