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Tue, 18 Aug 2026 23:56:02 -0700 (PDT) Date: Tue, 18 Aug 2026 23:56:02 -0700 In-Reply-To: <06f5b85d-47c0-4d00-a25d-e18b3950701bn@googlegroups.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a855382.4d75e56a.c9a88.0022.GAE@google.com> Subject: Re: [syzbot] [dri?] [usb?] KASAN: slab-out-of-bounds Read in drm_property_add_enum From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tao1.yu@intel.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: lost connection to test machine Warning: Permanently added '[localhost]:25442' (ED25519) to the list of kno= wn hosts. qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than= the requested size (0xb4000) qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0) is smaller than= the requested size (0x24e000) [ 81.081183][ T1126] ata1.00: Read log 0x10 page 0x00 failed, Emask 0x1 [ 81.083507][ T1126] ata1: failed to read log page 10h (errno=3D-5) [ 81.085637][ T1126] ata1.00: NCQ disabled due to excessive errors [ 81.087924][ T1126] ata1.00: exception Emask 0x1 SAct 0x4000c000 SErr 0x= 0 action 0x0 [ 81.090893][ T1126] ata1.00: irq_stat 0x40000000 [ 81.092585][ T1126] ata1.00: failed command: WRITE FPDMA QUEUED [ 81.094722][ T1126] ata1.00: cmd 61/70:70:3e:2a:05/12:00:00:00:00/40 tag= 14 ncq dma 2416640 ou [ 81.094722][ T1126] res 50/04:00:00:00:00/00:00:00:00:00/00 Ema= sk 0x1 (device error) [ 81.101073][ T1126] ata1.00: status: { DRDY } [ 81.102622][ T1126] ata1.00: error: { ABRT } [ 81.104309][ T1126] ata1.00: failed command: WRITE FPDMA QUEUED [ 81.106364][ T1126] ata1.00: cmd 61/88:78:ae:3c:05/04:00:00:00:00/40 tag= 15 ncq dma 593920 out [ 81.106364][ T1126] res 50/04:00:00:00:00/00:00:00:00:00/00 Ema= sk 0x1 (device error) [ 81.113344][ T1126] ata1.00: status: { DRDY } [ 81.114997][ T1126] ata1.00: error: { ABRT } [ 81.116646][ T1126] ata1.00: failed command: WRITE FPDMA QUEUED [ 81.119040][ T1126] ata1.00: cmd 61/a0:f0:66:72:04/05:00:00:00:00/40 tag= 30 ncq dma 737280 out [ 81.119040][ T1126] res 50/04:00:00:00:00/00:00:00:00:00/00 Ema= sk 0x1 (device error) [ 81.126410][ T1126] ata1.00: status: { DRDY } [ 81.128352][ T1126] ata1.00: error: { ABRT } [ 81.131274][ T1126] ata1.00: configured for UDMA/100 [ 81.134138][ T1126] ata1: EH complete qemu-system-x86_64: hw/ide/core.c:934: ide_dma_cb: Assertion `prep_size >= =3D 0 && prep_size <=3D n * 512' failed. Connection to localhost closed by remote host. 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-build2753574219=3D/tmp/go-build -gno-record-gc= c-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 746171eef8d 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=3D746171eef8d3611ed06d1a92ef68d5bee5031150 -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20260814-132435" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3D746171eef8d3611ed06d1a92ef68d5bee5031150 -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20260814-132435" ./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=3D746171eef8d3611ed06d1a92ef68d5bee5031150 -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20260814-132435" -o ./bi= n/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_386 x86_64-linux-gnu-g++ -o ./bin/linux_386/syz-executor executor/executor.cc \ -m32 -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= _386=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"746171eef8d3611ed06d1a92ef68d5bee5= 031150\" /usr/bin/ld: /tmp/ccoTJTt1.o: in function `Connection::Connect(char const*,= char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEP= KcS1_]+0x145): 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 [INFO] Unsupported architecture '386', skipping check. Tested on: commit: 0d5a4a96 drm/gud: validate TV mode names before creati.. git tree: https://github.com/yutao-intel/linux.git fix-dri kernel config: https://syzkaller.appspot.com/x/.config?x=3De4131490469a78a= 3 dashboard link: https://syzkaller.appspot.com/bug?extid=3D9ae8e7884e451eaed= 5b4 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Deb= ian) 2.44 userspace arch: i386 Note: no patches were applied.