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SMTP id e9e14a558f8ab-3d5e08e7d83mr127132945ab.1.1743504124943; Tue, 01 Apr 2025 03:42:04 -0700 (PDT) Date: Tue, 01 Apr 2025 03:42:04 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67ebc2fc.050a0220.3a8a08.0011.GAE@google.com> Subject: Re: [syzbot] [input?] [usb?] UBSAN: shift-out-of-bounds in __kfifo_alloc From: syzbot To: linux-kernel@vger.kernel.org, qasdev00@gmail.com, 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: 0000000 0000000000000000 0000000000000000 ZMM26=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM27=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM28=3D0000000000000000 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0000000000000000 0000000000000000= 692054524f50202c 2064696c61696d20 0070253a20252054 524f504d49005452 ZMM26=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 692020520050202c 2025204f504d4900 0061253a20252000 2527204d49005452 ZMM27=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 282b2e2fdf37342d 280bbfbf23243324 26312033fc040f18 1317140d080b0412 ZMM28=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 343133bffc121104 1214041204110814 100411bffc040f18 1317140d080b0412 ZMM29=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 4141414141414141 4141414141414141 4141414141414141 4141414141414141 ZMM30=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 1a1a1a1a1a1a1a1a 1a1a1a1a1a1a1a1a 1a1a1a1a1a1a1a1a 1a1a1a1a1a1a1a1a ZMM31=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 2020202020202020 2020202020202020 2020202020202020 2020202020202020 info registers vcpu 3 CPU#3 RAX=3D0000000000000031 RBX=3D00000000000003f8 RCX=3D0000000000000000 RDX=3D= 00000000000003f8 RSI=3Dffffffff854c84a5 RDI=3Dffffffff9ade3560 RBP=3Dffffffff9ade3520 RSP=3D= ffffc90003dbf0d8 R8 =3D0000000000000001 R9 =3D000000000000001f R10=3D0000000000000000 R11=3D= 2d2d2d2d2d2d2d2d R12=3D0000000000000000 R13=3D0000000000000031 R14=3Dffffffff9ade3520 R15=3D= ffffffff854c8440 RIP=3Dffffffff854c84cf RFL=3D00000002 [-------] CPL=3D0 II=3D0 A20=3D1 SMM= =3D0 HLT=3D0 ES =3D0000 0000000000000000 ffffffff 00c00000 CS =3D0010 0000000000000000 ffffffff 00a09b00 DPL=3D0 CS64 [-RA] SS =3D0018 0000000000000000 ffffffff 00c09300 DPL=3D0 DS [-WA] DS =3D0000 0000000000000000 ffffffff 00c00000 FS =3D0000 00007fe12fadd740 ffffffff 00c00000 GS =3D0000 ffff8880d6cf5000 ffffffff 00c00000 LDT=3D0000 0000000000000000 ffffffff 00c00000 TR =3D0040 fffffe00000d8000 00004087 00008b00 DPL=3D0 TSS64-busy GDT=3D fffffe00000d6000 0000007f IDT=3D fffffe0000000000 00000fff CR0=3D80050033 CR2=3D00007ffed1715038 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0000000000000000 0000000000000000 0000000000000000 ZMM16=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM17=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 3a3a3a3a3a3a3a3a 3a3a3a3a3a3a3a3a 3a3a3a3a3a3a3a3a 3a3a3a3a3a3a3a3a ZMM18=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 00000000ffffffff ffffffff00000000 498ccf3b66c4a900 0000000031687465 ZMM19=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 00000000c5c5c5c5 c5c5c5c500000000 498ccf015cc49300 000000000b524e5f ZMM20=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000021 0000000000000000 0000000000747369 6c5f747365757165 ZMM21=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000021 0000000000000000 0000000065676173 73656d5f70636864 ZMM22=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 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0000000000000000= 4141414141414141 4141414141414141 4141414141414141 4141414141414141 ZMM30=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 1a1a1a1a1a1a1a1a 1a1a1a1a1a1a1a1a 1a1a1a1a1a1a1a1a 1a1a1a1a1a1a1a1a ZMM31=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 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'/syzkaller/jobs/linux/gopath/pkg/mod/golang.org/toolchain@v0.0.1-= go1.23.6.linux-amd64' GOSUMDB=3D'sum.golang.org' GOTMPDIR=3D'' GOTOOLCHAIN=3D'auto' GOTOOLDIR=3D'/syzkaller/jobs/linux/gopath/pkg/mod/golang.org/toolchain@v0.0= .1-go1.23.6.linux-amd64/pkg/tool/linux_amd64' GOVCS=3D'' GOVERSION=3D'go1.23.6' GODEBUG=3D'' GOTELEMETRY=3D'local' GOTELEMETRYDIR=3D'/syzkaller/.config/go/telemetry' 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-build3373580461=3D/tmp/go-build -gno-record-gc= c-switches' git status (err=3D) HEAD detached at 20510e8871 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 touch .descriptions GOOS=3Dlinux GOARCH=3Damd64 go build "-ldflags=3D-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D20510e8871e31b24ba7dfd19ee03a482ae2ad722 -X '= github.com/google/syzkaller/prog.gitRevisionDate=3D20250326-130234'" -o ./b= in/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\"20510e8871e31b24ba7dfd19ee03a482ae= 2ad722\" /usr/bin/ld: /tmp/ccqnpJ1k.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 Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=3D15560274580000 Tested on: commit: 08733088 Merge tag 'rust-fixes-6.15-merge' of git://gi.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3D670852ba0109a9f= 6 dashboard link: https://syzkaller.appspot.com/bug?extid=3Dd5204cbbdd921f1f7= cad compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Deb= ian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D11e17bcf9800= 00