From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f71.google.com (mail-oo1-f71.google.com [209.85.161.71]) (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 B0CD8221721 for ; Fri, 20 Mar 2026 05:31:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773984665; cv=none; b=al3+38jsfscmIt+MG+U9JGU6oIitaO2HP+Jyn9FxKGUKdaavmM10DxYAUAFx+idsjN/xEWDpl5vAi6d10FnxMYT5gJWQvf31xKVhZbTWOsmuqC/2q30F7NsZLZ2xR8euOfycTSH+Rbcz0Cy0l88Ev6YcZo7o1WA1G5DAV6fprjs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773984665; c=relaxed/simple; bh=UHFfNKqE0jXgVavPmXLtfznKVjMArcYRXljwPij6DH4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=E5+Tz8VWYPseuKOlWL+sESx6DAbIW5l87QGaNSsXE2WE1dRu/HVHBKkVmOMB2xMK2+vjAnpCoaPIP3gaHZyKxSiOmpYOilUkr3p/Qpv0S/9EMZG7VPcKzxe683sc6ub0h4MgdYki4v1xa6EWxdq6iM6TfGmrAuJNhbfFWNQsp6s= 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=209.85.161.71 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-oo1-f71.google.com with SMTP id 006d021491bc7-67bd1b31789so3362730eaf.0 for ; Thu, 19 Mar 2026 22:31:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773984662; x=1774589462; 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=CIlot6FNfxr2DZKwPomxNEg12DYA7MHo7gC6Wh4AFdI=; b=MjJpUnNOwxzkTbf6FB3kKSZQ/UD1mrru/qpnMoYcN2OwrpLbPw+x+GuV80ZdMseZVn SuUKJ6SBieKMRXSScJ6HUXK/fYs8BIpLXJlMWPcYzlRMb6/XgWawquVOkMFMbKofvyhh Qut3cx6c0QY778t/NIwQq/hri5Jsd3+KwHYtGnT0QambdEAiRRaEn98jmXgTV1knnzjS qIB3xePNtQImq8bXcjGM6iHtRKa3P9cGqZYgVBUq7WUKyxmV47I8UFgEGi6BcsTuirPU tIf6/fY2Ft4qJZEEjxvLSh2hLXXw/lPIMO1G/VdGklNirc4OxofrZ/2TDnr+5hhR97OP H0tQ== X-Forwarded-Encrypted: i=1; AJvYcCVAZHrttNqohSGfh+EVVo5z3FqyGgPTfzOjoRx6zN+ukKQLfutnHYxl1+MmOFQQsT28FGW+BwDm6gxUwBE=@vger.kernel.org X-Gm-Message-State: AOJu0Yx7TKMp2kVTIvJpIPc2YLVzRXjSU0t6OgeJWBsKqAFFvKTcrSpj JFc7houvNdgylerc1c1hAMRg9Kx/0p7tNVKSAVvzpEq4gtdJRNZ9KWTDgBte5edm/ptWBTjofyM G+fdphaylcD81jFS52+FCU+pj9wueODSH0FiAlV2oM70Riiknpnfo7BP8cVQ= 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:c98:b0:67b:dd09:bc78 with SMTP id 006d021491bc7-67c22ee4824mr1485986eaf.18.1773984662597; Thu, 19 Mar 2026 22:31:02 -0700 (PDT) Date: Thu, 19 Mar 2026 22:31:02 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69bcdb96.050a0220.3bf4de.0009.GAE@google.com> Subject: Re: [syzbot] [media?] [usb?] KASAN: slab-use-after-free Read in v4l2_open From: syzbot To: eadavis@qq.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 create instance: googleapi: Error 400: Invalid value for field 'r= esource.scheduling.preemptible': 'false'. Scheduling must have preemptible = be false when OnHostMaintenance isn't TERMINATE., invalid 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-build258299175=3D/tmp/go-build -gno-record-gcc= -switches' GOHOSTARCH=3D'amd64' GOHOSTOS=3D'linux' GOINSECURE=3D'' GOMOD=3D'/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.= mod' GOMODCACHE=3D'/syzkaller/jobs-2/linux/gopath/pkg/mod' GONOPROXY=3D'' GONOSUMDB=3D'' GOOS=3D'linux' GOPATH=3D'/syzkaller/jobs-2/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 c88105488a 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=3Dc88105488a5620be13a34f467b1b811950c61bdd -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20260317-161255" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3Dc88105488a5620be13a34f467b1b811950c61bdd -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20260317-161255" ./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=3Dc88105488a5620be13a34f467b1b811950c61bdd -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20260317-161255" -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\"c88105488a5620be13a34f467b1b811950= c61bdd\" /usr/bin/ld: /tmp/cciJK4vT.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: b5d083a3 Add linux-next specific files for 20260319 git tree: linux-next kernel config: https://syzkaller.appspot.com/x/.config?x=3D9e197b084b913f8= d dashboard link: https://syzkaller.appspot.com/bug?extid=3D1a7507a194fff09e5= c44 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-= 1~exp1~20251221153213.50), Debian LLD 21.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D12bb6e165800= 00