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AFNElJ+YaJSjVhBZEg+l4nrs7kAPemPo9hM3gnNMPaSIhNoDEnLkTKLOB/4jQhD8tyQt3t/3PHZHkHZu8o8LiZU=@vger.kernel.org X-Gm-Message-State: AOJu0Yzh/8mVlPs1jfwUz2f74qG8qTYj2bg5jHiMshDGKfdVIvMNsGXd WC802QfA4haMgSJHU2EqZbapqwcvzZmHAFNATTarCa5gBpFZOJI/1um+CRqH3LMUtu5kC3W+gok WQ/S8B4nMsrysHAucO+jcRAeKLG9JW5WLtt2lkvLdIOPMB60cHTgMHK9ZvYg= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1c8e:b0:69e:98c0:4bc9 with SMTP id 006d021491bc7-6a0cd9c84c8mr1570766eaf.19.1781787542483; Thu, 18 Jun 2026 05:59:02 -0700 (PDT) Date: Thu, 18 Jun 2026 05:59:02 -0700 In-Reply-To: <20260618123427.291695-1-hrushirajg23@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a33eb96.8c9cf54e.2a1067.001e.GAE@google.com> Subject: Re: [syzbot] [fs?] KASAN: slab-use-after-free Read in debugfs_u32_get (2) From: syzbot To: hrushirajg23@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: scp failed: timedout after 1m0s ["scp" "= -P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=3D/dev/null" "-o" "Ident= itiesOnly=3Dyes" "-o" "BatchMode=3Dyes" "-o" "StrictHostKeyChecking=3Dno" "= -o" "ConnectTimeout=3D10" "-v" "-O" "/syzkaller/jobs/linux/gopath/src/githu= b.com/google/syzkaller/bin/linux_amd64/syz-execprog" "root@10.128.1.113:ci-= qemu-gce-upstream-auto-test-job/syz-execprog"] syzkaller build log: go env (err=3D) AR=3D'ar' CC=3D'gcc' CGO_CFLAGS=3D'-O2 -g' CGO_CPPFLAGS=3D'' CGO_CXXFLAGS=3D'-O2 -g' CGO_ENABLED=3D'1' CGO_FFLAGS=3D'-O2 -g' CGO_LDFLAGS=3D'-O2 -g' CXX=3D'g++' GCCGO=3D'gccgo' GO111MODULE=3D'auto' GOAMD64=3D'v1' GOARCH=3D'amd64' GOAUTH=3D'netrc' GOBIN=3D'' GOCACHE=3D'/syzkaller/.cache/go-build' GOCACHEPROG=3D'' GODEBUG=3D'' GOENV=3D'/syzkaller/.config/go/env' GOEXE=3D'' GOEXPERIMENT=3D'' GOFIPS140=3D'off' GOFLAGS=3D'' GOGCCFLAGS=3D'-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=3D0= -ffile-prefix-map=3D/tmp/go-build368877244=3D/tmp/go-build -gno-record-gcc= -switches' GOHOSTARCH=3D'amd64' GOHOSTOS=3D'linux' GOINSECURE=3D'' GOMOD=3D'/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mo= d' 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' GOTELEMETRY=3D'local' GOTELEMETRYDIR=3D'/syzkaller/.config/go/telemetry' GOTMPDIR=3D'' GOTOOLCHAIN=3D'auto' GOTOOLDIR=3D'/usr/local/go/pkg/tool/linux_amd64' GOVCS=3D'' GOVERSION=3D'go1.26.0' GOWORK=3D'' PKG_CONFIG=3D'pkg-config' git status (err=3D) HEAD detached at 4f06757f6 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}}' -ldflags=3D"-s -w -X github.com/google/syzkaller/pr= og.GitRevision=3D4f06757f683a802254a4c8edbfe67ff801904c5e -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20260612-145234" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3D4f06757f683a802254a4c8edbfe67ff801904c5e -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20260612-145234" ./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/contribut= ing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=3Dlinux GOARCH=3Damd64 go build -ldflags=3D"-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D4f06757f683a802254a4c8edbfe67ff801904c5e -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20260612-145234" -o ./bi= n/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 -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 -DGOOS_linux=3D1 -DGOARCH= _amd64=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"4f06757f683a802254a4c8edbfe67ff801= 904c5e\" /usr/bin/ld: /tmp/ccyi0Yf5.o: in function `Connection::Connect(char const*,= char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEP= KcS1_]+0x386): warning: Using 'gethostbyname' in statically linked applicat= ions requires at runtime the shared libraries from the glibc version used f= or linking ./tools/check-syzos.sh 2>/dev/null Tested on: commit: e771677c Merge tag 'for-linus-iommufd' of git://git.ke.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/li= nux.git master kernel config: https://syzkaller.appspot.com/x/.config?x=3Dea349aa18d06ec5= e dashboard link: https://syzkaller.appspot.com/bug?extid=3D6c25f4750230faf70= be9 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Deb= ian) 2.44 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D17b693b65800= 00