From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f200.google.com (mail-oi1-f200.google.com [209.85.167.200]) (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 A54684E73AE for ; Mon, 28 Sep 2026 15:32:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790609526; cv=none; b=N5jfeUdi1ayTgFaWW9kaaHtwtkgIfrZxsLCtd8eR/AKBRCvsRfqrPietUjwilemVvLO/hIa0zXkRAwfodV02ZGAEDaY4uDMU+Q8HNxS3LVMY4YCYBxmcShRD5t7KBsxtMHzfqRVRAIV3KclJ/5fQAEQVXUvbb5/unl8Z3scAOr8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790609526; c=relaxed/simple; bh=doEOg+US8J6B7U7K+soEsoXv74XX5RldXABoz5a9ZWI=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=GIcbbRskT6WpMb/AQe+wQStCkiWheNgVC/hVAmFCYn6GUXQ7jPWydeB5orjj5UyH5qcWhYfSe1e9C7xQ7jPF77Yud04QpuNuoQM9TQIdRuuTA9DKkgbo5RBFb23Hxw0K7EyNm3DNjjVitIDPIekpuLq5mGS7Q6/DYMtvGJ1FQZk= 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=209.85.167.200 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-oi1-f200.google.com with SMTP id 5614622812f47-4dab94dc3e7so5446122b6e.0 for ; Mon, 28 Sep 2026 08:32:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790609522; x=1791214322; h=content-transfer-encoding:content-type:to:from:subject:message-id :in-reply-to:date:mime-version:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to:content-type; bh=FHe/DKMDMNOxBT/djogDfbAwZkWmE/D6pcai+qSiHv8=; b=rP9Rzk2TyTTaO7BYPi5BTdUj7POHietMZy3zqoMU4SbUR8Few8U2zI9rhGR+ibLDuC B0eOGy2lQrdcpAvy9FiRhaF/l7fOsz4bb2rSqLk+OiBspj1BiZPlx0FaqvmCUVTGtMH8 7ZQvE6vi0h5/9VdEi2Pnx6D/Xqv/xHtVF/ml1WSuyquY7PhdWtGrGQm1IY0cQdnMrFwO fDmGHK0zeuKIW93dU02/fc1PHQXmI/v74UhOqOzJXutji4B+m6h4IBcFMhLoSwYSSj5d gLsUpjhoDORhtaRdepXUbcvuLF77uoce2uGVR327K2dSaBlWH80Q64LA2kVS3QrqOx9B PHBQ== X-Forwarded-Encrypted: i=1; AKwUvBxPiT5TtWeDg/UrlThpLVhNnIUgUvigUDO4ordZFfxe38MeSyrqVfCvEh4qMGgu4w3hqBlw4f/PlbmdGq8=@vger.kernel.org X-Gm-Message-State: AFuF++niKkDA1Va6g1ZHS3xp0qCHPnJmRZPPt+Cux4qdA5RjeJmaKtoa kCkK2yucWweipGRqOfkEAlihe1azcin5N/tpmwceS/TlBvebSE7ptImyXUzW0mSdpbD7nZXUdOz e8xKdb4D+MWcWcmV7SW13JJSquAA3wDXwa8TB1c3QWOQIEpF3Sp1EVON2DFM= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1929:b0:4e8:a7db:ce65 with SMTP id 5614622812f47-4e8a7dbe054mr5703626b6e.53.1790609522318; Mon, 28 Sep 2026 08:32:02 -0700 (PDT) Date: Mon, 28 Sep 2026 08:32:02 -0700 In-Reply-To: <20260928151833.GB536483@shredder> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aba8872.c6a7fab7.e5ea7.0457.GAE@google.com> Subject: Re: [syzbot] BUG: Address NUM::fb on device lo is missing its host route. From: syzbot To: idosch@nvidia.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: SYZFAIL: failed to recv rpc SYZFAIL: failed to recv rpc fd=3D3 want=3D4 recv=3D0 n=3D0 (errno 9: Bad file descriptor) execution of simple program fails: NOTFAIL: arptable checkpoint: getsockopt= (ARPT_SO_GET_ENTRIES) failed. table=3Dfilter (errno 22: Invalid argument). Warning: Permanently added '[localhost]:25612' (ED25519) to the list of kno= wn hosts. 2026/09/28 15:31:20 parsed 1 programs 2026/09/28 15:31:20 serving rpc on tcp://36177 [ 47.553227][ T5746] cgroup: Unknown subsys name 'net' [ 47.698693][ T5746] cgroup: Unknown subsys name 'cpuset' [ 47.702860][ T5746] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size =3D 127995904 bytes [ 48.856439][ T5746] Adding 124996k swap on ./swap-file. Priority:0 exte= nts:1 across:124996k=20 [ 51.171997][ T5752] soft_limit_in_bytes is deprecated and will be remove= d. Writing any value to this file has no effect. Please report your usecase= to linux-mm@kvack.org if you depend on this functionality. [ 51.176597][ T5752] ebtables: xtables 32bit compat interface no longer s= upported in namespaces and will be removed soon. [ 51.187163][ T5752] arp_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 51.584025][ T46] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 51.584041][ T46] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 51.638990][ T38] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 51.639014][ T38] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 52.584253][ T5769] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 52.584749][ T5769] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 52.584809][ T5769] bridge_slave_0: entered allmulticast mode [ 52.586142][ T5769] bridge_slave_0: entered promiscuous mode [ 52.588800][ T5769] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 52.588842][ T5769] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 52.588899][ T5769] bridge_slave_1: entered allmulticast mode [ 52.589826][ T5769] bridge_slave_1: entered promiscuous mode [ 52.609061][ T5769] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 52.612156][ T5769] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 52.634772][ T5769] team0: Port device team_slave_0 added [ 52.637853][ T5769] team0: Port device team_slave_1 added [ 52.659595][ T5769] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 52.659612][ T5769] batman_adv: batadv0: The MTU of interface batadv_sla= ve_0 is too small (1500) to handle the transport of batman-adv packets. Pac= kets going over this interface will be fragmented on layer2 which could imp= act the performance. Setting the MTU to 1532 would solve the problem. [ 52.659634][ T5769] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 52.661967][ T5769] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 52.661981][ T5769] batman_adv: batadv0: The MTU of interface batadv_sla= ve_1 is too small (1500) to handle the transport of batman-adv packets. Pac= kets going over this interface will be fragmented on layer2 which could imp= act the performance. Setting the MTU to 1532 would solve the problem. [ 52.662001][ T5769] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 52.698031][ T5769] hsr_slave_0: entered promiscuous mode [ 52.698964][ T5769] hsr_slave_1: entered promiscuous mode [ 52.831553][ T5769] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 52.838068][ T5769] 8021q: adding VLAN 0 to HW filter on device netdevsi= m0 [ 52.839020][ T5769] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 52.847513][ T5769] 8021q: adding VLAN 0 to HW filter on device netdevsi= m1 [ 52.848454][ T5769] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 52.853584][ T5769] 8021q: adding VLAN 0 to HW filter on device netdevsi= m2 [ 52.854492][ T5769] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 52.860087][ T5769] 8021q: adding VLAN 0 to HW filter on device netdevsi= m3 [ 52.924459][ T5769] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.939304][ T5769] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.944711][ T74] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 52.945117][ T74] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 52.953389][ T74] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 52.953436][ T74] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 53.267244][ T5769] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 53.432851][ T5769] veth0_vlan: entered promiscuous mode [ 53.438431][ T5769] veth1_vlan: entered promiscuous mode [ 53.457016][ T5769] veth0_macvtap: entered promiscuous mode [ 53.460801][ T5769] veth1_macvtap: entered promiscuous mode [ 53.473078][ T5769] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 53.480407][ T5769] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 53.509123][ T12] netdevsim netdevsim5 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 53.566894][ T12] netdevsim netdevsim5 netdevsim3 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 53.575956][ T5761] netdevsim netdevsim5 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 53.655132][ T5761] netdevsim netdevsim5 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 53.674478][ T12] netdevsim netdevsim5 netdevsim1 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 53.689000][ T5818] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 53.689955][ T5818] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 53.690417][ T5818] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 53.691659][ T5818] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 53.692196][ T5818] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 53.737071][ T12] netdevsim netdevsim5 netdevsim0 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 54.878528][ T5840] ip_tables: xtables 32bit compat interface no longer = supported in namespaces and will be removed soon. [ 54.878912][ T5840] ip6_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 55.016366][ T12] bridge_slave_1: left allmulticast mode [ 55.016404][ T12] bridge_slave_1: left promiscuous mode [ 55.017015][ T12] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 55.021736][ T12] bridge_slave_0: left allmulticast mode [ 55.021756][ T12] bridge_slave_0: left promiscuous mode [ 55.021918][ T12] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 55.161216][ T12] bond0 (unregistering): (slave bond_slave_0): Releasi= ng backup interface [ 55.163318][ T12] bond0 (unregistering): (slave bond_slave_1): Releasi= ng backup interface [ 55.164136][ T12] bond0 (unregistering): Released all slaves [ 55.256269][ T12] hsr_slave_0: left promiscuous mode [ 55.258264][ T12] hsr_slave_1: left promiscuous mode [ 55.258734][ T12] batman_adv: batadv0: Interface deactivated: batadv_s= lave_0 [ 55.258752][ T12] batman_adv: batadv0: Removing interface: batadv_slav= e_0 [ 55.260433][ T12] batman_adv: batadv0: Interface deactivated: batadv_s= lave_1 [ 55.260445][ T12] batman_adv: batadv0: Removing interface: batadv_slav= e_1 [ 55.277158][ T12] veth1_macvtap: left promiscuous mode [ 55.277216][ T12] veth0_macvtap: left promiscuous mode [ 55.277298][ T12] veth1_vlan: left promiscuous mode [ 55.277352][ T12] veth0_vlan: left promiscuous mode [ 55.467919][ T12] team0 (unregistering): Port device team_slave_1 remo= ved [ 55.483319][ T12] team0 (unregistering): Port device team_slave_0 remo= ved [ 55.574371][ T5449] 8021q: adding VLAN 0 to HW filter on device eth2 [ 55.834084][ T5449] 8021q: adding VLAN 0 to HW filter on device eth3 SYZFAIL: failed to recv rpc fd=3D3 want=3D4 recv=3D0 n=3D0 (errno 9: Bad file descriptor) execution of simple program fails: NOTFAIL: arptable checkpoint: getsockopt= (ARPT_SO_GET_ENTRIES) failed. table=3Dfilter (errno 22: Invalid argument). [ 56.022767][ T5449] 8021q: adding VLAN 0 to HW filter on device eth4 [ 56.418782][ T5449] 8021q: adding VLAN 0 to HW filter on device eth5 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-build4086096228=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 1e72964b011 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=3D1e72964b0111319984575e60f266d1fa0a98abb5 -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20260817-123423" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3D1e72964b0111319984575e60f266d1fa0a98abb5 -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20260817-123423" ./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=3D1e72964b0111319984575e60f266d1fa0a98abb5 -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20260817-123423" -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\"1e72964b0111319984575e60f266d1fa0a= 98abb5\" /usr/bin/ld: /tmp/ccPHEVZY.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: 72d3fcf8 Linux 7.3-rc5 git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3Da2a10c7c0ac9ebc= 2 dashboard link: https://syzkaller.appspot.com/bug?extid=3D57f410c9a4f8d7a44= 1d6 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Deb= ian) 2.44 userspace arch: i386 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D17c0f6055800= 00