From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f70.google.com (mail-ot1-f70.google.com [209.85.210.70]) (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 B089D388397 for ; Thu, 12 Mar 2026 22:22:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773354125; cv=none; b=cc/3wYFojohE/CNUcaGcMja/pHUKB7SVnhOjKLIxnBjazhi9l/UtcdX7KF0LAC38yEwoKySWlASJE54AD+iRdZzCortfac+QcBeFqAAAcYHfGHMfEmChgQOtNTwIscnDZIIE0Iou3wl59GS4RupQgoNG41zKL0BxXauuUc0OvP0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773354125; c=relaxed/simple; bh=pGKlkVfV5Z9t4d5yAbbWQ6ShVbgJ2B1C+vRs5N1p+Bk=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=rCKxx9MZgcNGhlzZ7cffOOP5+nnlzATx7ADRhyubHmVm/JbYR3tRADKKVymVx6vNNT81JZstBOFruImvlGvLmDsaseBBSf0EJJ0lDVZNSQQqZijokoKN1IpXrIfwA9wzSzFyd6pa8BNXtokYWl1Mk/hiwwPloRUeZt6EU9N5jBk= 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=209.85.210.70 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-ot1-f70.google.com with SMTP id 46e09a7af769-7d740d7e5a3so13681015a34.2 for ; Thu, 12 Mar 2026 15:22:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773354122; x=1773958922; 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=zTXhBREpxazFZmOw3PYElV2JCki8dqvlexCx6pFH8lM=; b=O2NeFZQDTbUZqakH83+UjbYh198Md4p5fBIQUNvhS1dUzaiRINFhAonpdlbcap+2iq YiAeC61u0jALExt0pFZjNuDh6oMKUL1It826dJXomiK/gPiabT3H4/JhjR8qiDaHrLnJ YyluHf6m/BIxSjOoUkSiBzZEswPOgREiIkeXkoz96nfxsACruXrrMG4KlkBnrRCE0LoB OqlqJX1VMaZb7salnJgHLR0UnwahV3+K1847T6AN/OS6YrLAoaCyA48vqng5uuUvvhvx 5zQ0CK/Y8TjfinwERcDUrBFuG4G8XQXHFW8q7JiLd6hsId/IKCBu9XlKaYL50vpTc5Xg l2eA== X-Forwarded-Encrypted: i=1; AJvYcCVX22nHyWDwxX3ufG6OtLI4kzLKsYOtO1kW8TWP7UHXQwpgZt7pquyCLP7q1o2veaCWGTvY1SnRV9BfV18=@vger.kernel.org X-Gm-Message-State: AOJu0YwHcTP1RSmd9fBMbaG8DTvKsJphB/p7SMppZi01arWlY/O2OdcV nBanK73AT5xrFC0iipPsRVMaQLRqY/Vh1+A1X6AAQHWrSl4TGjwerHFcZ5fPNH0a4P8m+/YG6T1 EhK/L8I2SRmly7FyR3DivnMD+l4VDDr9wafURXQQNBuPsNKhVLNZAiOvXH7c= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:169e:b0:679:88ee:e3f8 with SMTP id 006d021491bc7-67bdaa9bfa0mr741765eaf.68.1773354122691; Thu, 12 Mar 2026 15:22:02 -0700 (PDT) Date: Thu, 12 Mar 2026 15:22:02 -0700 In-Reply-To: <20260312220219.895-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69b33c8a.a00a0220.3b25d1.0002.GAE@google.com> Subject: Re: [syzbot] [net?] KASAN: slab-use-after-free Read in sock_def_readable (2) From: syzbot To: hdanton@sina.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: lost connection to test machine syzkaller login: qemu-system-x86_64: ahci: PRDT length for NCQ command (0x0= ) is smaller than the requested size (0x400000) Warning: Permanently added '[localhost]:9504' (ED25519) to the list of know= n hosts. 2026/03/12 22:20:27 parsed 1 programs [ 135.338848][ T5316] cgroup: Unknown subsys name 'net' [ 135.396122][ T5316] cgroup: Unknown subsys name 'cpuset' [ 135.403015][ T5316] cgroup: Unknown subsys name 'rlimit' [ 143.433872][ T1314] ieee802154 phy0 wpan0: encryption failed: -22 [ 143.437206][ T1314] ieee802154 phy1 wpan1: encryption failed: -22 [ 188.890546][ T1009] ata1.00: NCQ disabled due to excessive errors [ 188.893607][ T1009] ata1.00: exception Emask 0x0 SAct 0x4000 SErr 0x0 ac= tion 0x6 frozen [ 188.898202][ T1009] ata1.00: failed command: WRITE FPDMA QUEUED [ 188.902723][ T1009] ata1.00: cmd 61/00:70:26:5e:04/20:00:00:00:00/40 tag= 14 ncq dma 4194304 ou [ 188.902723][ T1009] res 40/00:00:00:00:00/00:00:00:00:00/00 Ema= sk 0x4 (timeout) [ 188.911375][ T1009] ata1.00: status: { DRDY } [ 188.913896][ T1009] ata1: hard resetting link [ 189.233766][ T1009] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 30= 0) [ 189.239363][ T1009] ata1.00: configured for UDMA/100 [ 189.243584][ T1009] 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-build2904551795=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 7c9658af8505 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=3D7c9658af8505abccd5bf5890cc8a8e6d9826eaa0 -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20260223-092328" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3D7c9658af8505abccd5bf5890cc8a8e6d9826eaa0 -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20260223-092328" ./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=3D7c9658af8505abccd5bf5890cc8a8e6d9826eaa0 -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20260223-092328" -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\"7c9658af8505abccd5bf5890cc8a8e6d98= 26eaa0\" /usr/bin/ld: /tmp/cctV4tEl.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: 0257f64b Merge tag 'pm-7.0-rc4' of git://git.kernel.or.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3Dc5c49ee0942d1cd= b dashboard link: https://syzkaller.appspot.com/bug?extid=3Df50072212ab792c86= 925 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=3D14940b885800= 00