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 6874F19C562 for ; Thu, 31 Oct 2024 16:21:05 +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=1730391667; cv=none; b=XUWcGY+jlzRuuD1Mg1gZ03I3hXI/iF7FnvDilWQR3vjUK8VF8uRhQ0HqG3+e0EQywmHq1ZUM5g1vgekM1MhSmRl7IygsuXHDqVseZWxVyXhfqsxwL4hjId7hKsv9GtSFP8M7S1iBPPvXIbMU/+EFmASOKNHIU3rm3Un0lLBaaXc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730391667; c=relaxed/simple; bh=PCy0ezMn8efV46/eK2nN4/8YDl4LOXiSY2htiEijqhQ=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; 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linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1a44:b0:3a3:c4c9:8 with SMTP id e9e14a558f8ab-3a4ed2942bcmr197826665ab.13.1730391664526; Thu, 31 Oct 2024 09:21:04 -0700 (PDT) Date: Thu, 31 Oct 2024 09:21:04 -0700 In-Reply-To: <20241031124205.10372-1-aha310510@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6723ae70.050a0220.35b515.0163.GAE@google.com> Subject: Re: [syzbot] [exfat?] KMSAN: kernel-infoleak in pipe_read From: syzbot To: aha310510@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot tried to test the proposed patch but the build/boot failed: failed to copy syz-execprog to VM: timedout after 1m0s ["scp" "-P" "22" "-F= " "/dev/null" "-o" "UserKnownHostsFile=3D/dev/null" "-o" "IdentitiesOnly=3D= yes" "-o" "BatchMode=3Dyes" "-o" "StrictHostKeyChecking=3Dno" "-o" "Connect= Timeout=3D10" "-v" "/syzkaller/jobs/linux/gopath/src/github.com/google/syzk= aller/bin/linux_amd64/syz-execprog" "root@10.128.0.23:./syz-execprog"] Executing: program /usr/bin/ssh host 10.128.0.23, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u3, OpenSSL 3.0.14 4 Jun 2024 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.0.23 [10.128.0.23] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u3 debug1: Remote protocol version 2.0, remote software version OpenSSH_9.1 debug1: compat_banner: match: OpenSSH_9.1 pat OpenSSH* compat 0x04000000 debug1: Authenticating to 10.128.0.23:22 as 'root' debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or dire= ctory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or dir= ectory debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: sntrup761x25519-sha512@openssh.com debug1: kex: host key algorithm: ssh-ed25519 debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: SSH2_MSG_KEX_ECDH_REPLY received debug1: Server host key: ssh-ed25519 SHA256:g5LT3corcdQiP3+7S3QNYL7lzLWO1gp= /6X86Qtf82jk debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts: No such file or dire= ctory debug1: load_hostkeys: fopen /etc/ssh/ssh_known_hosts2: No such file or dir= ectory Warning: Permanently added '10.128.0.23' (ED25519) to the list of known hos= ts. debug1: rekey out after 134217728 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey in after 134217728 blocks debug1: Will attempt key: /root/.ssh/id_rsa=20 debug1: Will attempt key: /root/.ssh/id_ecdsa=20 debug1: Will attempt key: /root/.ssh/id_ecdsa_sk=20 debug1: Will attempt key: /root/.ssh/id_ed25519=20 debug1: Will attempt key: /root/.ssh/id_ed25519_sk=20 debug1: Will attempt key: /root/.ssh/id_xmss=20 debug1: Will attempt key: /root/.ssh/id_dsa=20 debug1: SSH2_MSG_EXT_INFO received debug1: kex_input_ext_info: server-sig-algs=3D debug1: kex_input_ext_info: publickey-hostbound@openssh.com=3D<0> debug1: SSH2_MSG_SERVICE_ACCEPT received Authenticated to 10.128.0.23 ([10.128.0.23]:22) using "none". debug1: channel 0: new session [client-session] (inactive timeout: 0) debug1: Requesting no-more-sessions@openssh.com debug1: Entering interactive session. debug1: pledge: network debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_rep= ly 0 debug1: Sending subsystem: sftp debug1: pledge: fork scp: debug1: stat remote: No such file or directory 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'go1.22.7' 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.mo= d' 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-build1695445684=3D/tmp/go-build -gno-record-gc= c-switches' git status (err=3D) HEAD detached at fb888278a6 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/contribut= ing.md#using-syz-env go list -f '{{.Stale}}' ./sys/syz-sysgen | grep -q false || go install ./sy= s/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/contribut= ing.md#using-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=3Dfb888278a6b21eda7fa63551c83fd17b90305ba1 -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20241030-093306'" "-tags= =3Dsyz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execpr= og 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 -Wfr= ame-larger-than=3D16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-forma= t-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -= static-pie -std=3Dc++17 -I. -Iexecutor/_include -fpermissive -w -DGOOS_linu= x=3D1 -DGOARCH_amd64=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"fb888278a6b21eda7fa63551c83fd17b90= 305ba1\" /usr/bin/ld: /tmp/cccAwp7Q.o: in function `test_cover_filter()': executor.cc:(.text+0x1426b): warning: the use of `tempnam' is dangerous, be= tter use `mkstemp' /usr/bin/ld: /tmp/cccAwp7Q.o: in function `Connection::Connect(char const*,= char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEP= KcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applicat= ions requires at runtime the shared libraries from the glibc version used f= or linking Tested on: commit: 0fc810ae x86/uaccess: Avoid barrier_nospec() in 64-bit.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3D4d4311df74eee96= f dashboard link: https://syzkaller.appspot.com/bug?extid=3D41ebd857f01338423= 7a9 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debia= n) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D15cb655f9800= 00