From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5ACA41D6186 for ; Tue, 6 Aug 2024 13:43:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.197 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722951824; cv=none; b=OO7q/zYojus7qqclPpmnbw5I174vbmkikNEXHiCF5TZTmIN7xuL5oBUmZmi677I36oK3TyY6dwSIzVY/cN17+omc/+quKE+RSnLKKLNqg9mLIK9iY5aS4sX5Pfb3Wtab3GNaq/JyRrKrjG0mXr1CnGw+0pKgOdOTvWCVxxkhCNw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722951824; c=relaxed/simple; bh=FptSQKLn9G/7Ort0GuG1aDx1RzKzfhy5tgjb62fCUbA=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=I35jda71VOtJBPmhi/lvONVoyc+98WF3H5hrkn2XA+fhZXWBmTjBNyvFmdmR/cq1mP4+J24aN4u0+8+UkCUuhT6gcIGJoUPXXeCRqw0QrDD2O8yHPhvKAHc8eDBzum2PHJ1ApsN0ppjL+Boqz/SoG0sK8OveNYOadtWnOWjMnvg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.197 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f197.google.com with SMTP id e9e14a558f8ab-39b3b3c74d9so10855285ab.0 for ; Tue, 06 Aug 2024 06:43:42 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722951821; x=1723556621; h=content-transfer-encoding:to:from:subject:message-id:in-reply-to :date:mime-version:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=yKJgkNpWV97brKM3BSs0GLOrPa2mdKasXrlPtgLZJqM=; b=mNk1BCwk/0CfIMcmJx0Af1nem38bDt0j4qndrGTzRWWoZUKH0v04bHsyArJyeLe08P /T7Jp9xV4Z3+RjkWGRUUiFGMPDRlGsPiT7lbQo9g0Oyc/EWzncJ+Ftf6BHwnTQE3vPXX HhyUJiYttvBv5+zq4iDpU7yPbRJ5QXWAEFpYY2k3cvPKCZ0U558BhxEbygf8Gt7Qi8Uu M4vQYQrawy9uUtW6iFVPEoKqW5Ey0neem2en+34AJiGlzEh1lIphf6hIJFpokKQhpaly 4gI72VquxcFXjPqJ/S9bAmwl1qQr3NurPNQCSI/0cCQklTR82+wqD0J9YOS1x5zRHkF9 BLwQ== X-Gm-Message-State: AOJu0YzvzZPnkaxmncTmEUh3XFVYYT8lQMa8WOeKbE5k5qJ8tmJ9fvhy GiEvDnX4RSIum+U5V/7gaO1p86SJM4V83ionW2IaHmgNGs7wlIG7J7oUWV+qR/54W5Lzc9ZPG4v SqMpA54FerHDyl9rL8C2Unzc/gJ0QjuPp4Eqx5OTCwEMm/DaIhWdQmcM= X-Google-Smtp-Source: AGHT+IHR+LxWagw55HVStkcHD59l/AQtmwDZ70x1QFh0qDSj0W/EAbgvFTWUuynEw34ZAIZeBvSJ3GaEi9xG/4jIH1roSu/MG5UL Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:b4e:b0:381:24e:7a85 with SMTP id e9e14a558f8ab-39b1fb6b9damr11517255ab.1.1722951821398; Tue, 06 Aug 2024 06:43:41 -0700 (PDT) Date: Tue, 06 Aug 2024 06:43:41 -0700 In-Reply-To: <000000000000fa6583061ccb8e3d@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000047a4cf061f03fb20@google.com> Subject: Re: [syzbot] Re: [syzbot] [bluetooth?] WARNING in __hci_cmd_sync_sk From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com. *** Subject: Re: [syzbot] [bluetooth?] WARNING in __hci_cmd_sync_sk Author: djahchankoike@gmail.com #syz test hci_dev_cmd calls sync functions without holding the appropriate lock. Signed-off-by: Diogo Jahchan Koike --- net/bluetooth/hci_core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index c644b30977bd..34096791364d 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -716,6 +716,8 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg) goto done; } + hci_req_sync_lock(hdev); + switch (cmd) { case HCISETAUTH: err =3D __hci_cmd_sync_status(hdev, HCI_OP_WRITE_AUTH_ENABLE, @@ -791,6 +793,8 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg) break; } + hci_req_sync_unlock(hdev); + done: hci_dev_put(hdev); return err; --=20 2.39.2 On Tue, Aug 6, 2024 at 12:45=E2=80=AFAM syzbot < syzbot+f52b6db1fe57bfb08d49@syzkaller.appspotmail.com> wrote: > Hello, > > syzbot tried to test the proposed patch but the build/boot failed: > > b 5f5f206220306136 > ZMM26=3D0000000000000000 0000000000000000 0000000000000000 00000000000000= 00 > 5f5f206220303237 6433663439666666 66666666660a3032 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2020202020202020 2020202020202020 2020202020202020 2020202020202020 > > > syzkaller build log: > go env (err=3D) > GO111MODULE=3D'auto' > GOARCH=3D'amd64' > GOBIN=3D'' > GOCACHE=3D'/syzkaller/.cache/go-build' > GOENV=3D'/syzkaller/.config/go/env' > GOEXE=3D'' > GOEXPERIMENT=3D'' > GOFLAGS=3D'' > GOHOSTARCH=3D'amd64' > GOHOSTOS=3D'linux' > GOINSECURE=3D'' > GOMODCACHE=3D'/syzkaller/jobs/linux/gopath/pkg/mod' > GONOPROXY=3D'' > GONOSUMDB=3D'' > GOOS=3D'linux' > GOPATH=3D'/syzkaller/jobs/linux/gopath' > GOPRIVATE=3D'' > GOPROXY=3D'https://proxy.golang.org,direct' > GOROOT=3D'/usr/local/go' > GOSUMDB=3D'sum.golang.org' > GOTMPDIR=3D'' > GOTOOLCHAIN=3D'auto' > GOTOOLDIR=3D'/usr/local/go/pkg/tool/linux_amd64' > GOVCS=3D'' > GOVERSION=3D'go1.21.4' > GCCGO=3D'gccgo' > GOAMD64=3D'v1' > AR=3D'ar' > CC=3D'gcc' > CXX=3D'g++' > CGO_ENABLED=3D'1' > GOMOD=3D'/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.= mod > ' > GOWORK=3D'' > CGO_CFLAGS=3D'-O2 -g' > CGO_CPPFLAGS=3D'' > CGO_CXXFLAGS=3D'-O2 -g' > CGO_FFLAGS=3D'-O2 -g' > CGO_LDFLAGS=3D'-O2 -g' > PKG_CONFIG=3D'pkg-config' > GOGCCFLAGS=3D'-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length= =3D0 > -ffile-prefix-map=3D/tmp/go-build414629084=3D/tmp/go-build > -gno-record-gcc-switches' > > git status (err=3D) > HEAD detached at 9e136b955 > nothing to commit, working tree clean > > > tput: No value for $TERM and no -T specified > tput: No value for $TERM and no -T specified > Makefile:31: run command via tools/syz-env for best compatibility, see: > Makefile:32: > https://github.com/google/syzkaller/blob/master/docs/contributing.md#usin= g-syz-env > go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install > ./sys/syz-sysgen > make .descriptions > tput: No value for $TERM and no -T specified > tput: No value for $TERM and no -T specified > Makefile:31: run command via tools/syz-env for best compatibility, see: > Makefile:32: > https://github.com/google/syzkaller/blob/master/docs/contributing.md#usin= g-syz-env > bin/syz-sysgen > > go fmt ./sys/... >/dev/null > touch .descriptions > GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X > github.com/google/syzkaller/prog.GitRevision=3D9e136b95503a540d35e7bace3e= 89b77f13a672b1 > -X 'github.com/google/syzkaller/prog.gitRevisionDate=3D20240710-085916'" > "-tags=3Dsyz_target syz_os_linux syz_arch_amd64 " -o > ./bin/linux_amd64/syz-execprog > github.com/google/syzkaller/tools/syz-execprog > mkdir -p ./bin/linux_amd64 > g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \ > -m64 -O2 -pthread -Wall -Werror -Wparentheses > -Wunused-const-variable -Wframe-larger-than=3D16384 -Wno-stringop-overflo= w > -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable > -Wno-unused-command-line-argument -static-pie -std=3Dc++17 -I. > -Iexecutor/_include -fpermissive -w -DGOOS_linux=3D1 -DGOARCH_amd64=3D1 \ > -DHOSTGOOS_linux=3D1 > -DGIT_REVISION=3D\"9e136b95503a540d35e7bace3e89b77f13a672b1\" > /usr/bin/ld: /tmp/ccGUtGqZ.o: in function `test_cover_filter()': > executor.cc:(.text+0x133bb): warning: the use of `tempnam' is dangerous, > better use `mkstemp' > /usr/bin/ld: /tmp/ccGUtGqZ.o: in function `Connection::Connect(char > const*, char const*)': > executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7Connect= EPKcS1_]+0x1a0): > warning: Using 'gethostbyname' in statically linked applications requires > at runtime the shared libraries from the glibc version used for linking > > > Error text is too large and was truncated, full error text is at: > https://syzkaller.appspot.com/x/error.txt?x=3D128b0bbd980000 > > > Tested on: > > commit: b446a2da Merge tag 'linux_kselftest-fixes-6.11-rc3' of.. > git tree: upstream > kernel config: https://syzkaller.appspot.com/x/.config?x=3D53ca389b28cf4= 23 > dashboard link: > https://syzkaller.appspot.com/bug?extid=3Df52b6db1fe57bfb08d49 > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for > Debian) 2.40 > patch: > https://syzkaller.appspot.com/x/patch.diff?x=3D116cbd73980000 > >