From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f69.google.com (mail-oo1-f69.google.com [209.85.161.69]) (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 6A572379970 for ; Mon, 12 Jan 2026 17:23:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.69 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768238585; cv=none; b=P/Mw0BfosAE13eelLH48IcFXJvKDUKLTL2mSZJgxd5lLvPjq5IKdCjUdGs+9KR0aYeCKP0+BOQLNzG+9nt6I6Q8DJZIVqNPwPYH3tUOZZZXnbpt5UMGivfVmYwLVEyuwDgRv3RQ7v0xDiDf8tq4qMCS+92xJXHSMiCRyoYYU6Q4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768238585; c=relaxed/simple; bh=I8w6/tscTbcL6EcRJRfkWsU+iNiK0+lYwW/DmffwGKA=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=SoPMFzt9kWXyZGOM0U5mhm5AOLLgHqUn8hJBzgCgOQVgYiQGP1aF/IKwWlXbwrouoiE34b7Iu8tfmK9XMoEfyF5aJGRiypQMweuzOtwXGuyJ7zM+qAIfsOIM/Bm2E6NYTtruHkFAOkMn27lfH9mbbDVkrTQEUefuZXPiKWJgoUQ= 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=209.85.161.69 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-f69.google.com with SMTP id 006d021491bc7-65b153371efso11708580eaf.1 for ; Mon, 12 Jan 2026 09:23:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1768238582; x=1768843382; 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=vX1MmkpDvZFf6BzgbOPIJ1q1JBX6FVHqdKbXHA0k9z4=; b=O+zqAgPNx573eexRI71T+0ACKKzBnrThOlI6wNFmkR6upX6h4uAeVcjrc+XW+AFFi5 w9HnJb+fmdkP5HBWlXP7IJZOMbZeplTKd+57hFZ9O0HolBfHuCf7+y6gCtiWPCcP7NH6 t1e5lVyctR2kQ35NviU3zC1siTGqcYfbxm/Bjv1EHJPqaeX+ax+IT1SGdK6BLvKqcGSZ +kI5IZpWy8rLaNLe89H79d4mPzeoZhbaadSuVmWDXbJ8GDK2JuGTqzdqfeMwvSSFe7Gw uNxnOWCvsm4lMmJDqPqoinPbD96py/UjvJtJYSdhYNHWfWaevK0f3ZlMjEZzZXX3W1qZ eE0w== X-Forwarded-Encrypted: i=1; AJvYcCXGGYhyd+7FelcfoQQ8JeUMwRBWefJrh5UtIlBUSE5Q7ZuEY7TO57UpC7e55W7RC9X/2S6/UPICO2oivW0=@vger.kernel.org X-Gm-Message-State: AOJu0YzB1POn9pid21K3TtoYLzpUozTEDNamL+XswyA4VH25qb5KIN2M EpRAPkVSCztzuClbzfaXyY7vtP62a9VGyInbFJEvSwtgkrLn8OD5/B8/dn+lhrEtr9vcYlfVBbO Mkidni/hcWNEytDO+Qel5virQCiPudXw0l8q756jnqOu6aeEj4/goNRkunFw= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:650b:b0:659:9a49:8e2e with SMTP id 006d021491bc7-660f2a16f99mr45940eaf.32.1768238582363; Mon, 12 Jan 2026 09:23:02 -0800 (PST) Date: Mon, 12 Jan 2026 09:23:02 -0800 In-Reply-To: <20260112163611.11083-2-ryncsn@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69652df6.050a0220.eaf7.00be.GAE@google.com> Subject: Re: [syzbot] [mm?] [cgroups?] kernel BUG in swap_cgroup_record (2) From: syzbot To: kasong@tencent.com, linux-kernel@vger.kernel.org, ryncsn@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: SYZFAIL: failed to recv rpc SYZFAIL: failed to recv rpc Warning: Permanently added '10.128.1.115' (ED25519) to the list of known ho= sts. 2026/01/12 17:22:39 parsed 1 programs [ 82.355124][ T5825] cgroup: Unknown subsys name 'net' [ 82.462751][ T5825] cgroup: Unknown subsys name 'cpuset' [ 82.472202][ T5825] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size =3D 127995904 bytes [ 83.906410][ T5825] Adding 124996k swap on ./swap-file. Priority:0 exte= nts:1 across:124996k=20 [ 86.975545][ T5843] soft_limit_in_bytes is deprecated and will be remove= d. Please report your usecase to linux-mm@kvack.org if you depend on this f= unctionality. [ 87.202360][ T981] cfg80211: failed to load regulatory.db [ 87.362862][ T5143] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 87.373407][ T5143] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 87.381143][ T5143] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 87.390171][ T5143] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 87.439616][ T5143] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 88.365680][ T67] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 88.399392][ T67] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 88.589212][ T67] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 88.597071][ T67] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 89.835852][ T5889] chnl_net:caif_netlink_parms(): no params data found [ 90.228347][ T5889] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 90.239581][ T5889] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 90.246917][ T5889] bridge_slave_0: entered allmulticast mode [ 90.256371][ T5889] bridge_slave_0: entered promiscuous mode [ 90.265733][ T5889] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 90.273158][ T5889] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 90.281856][ T5889] bridge_slave_1: entered allmulticast mode [ 90.290137][ T5889] bridge_slave_1: entered promiscuous mode [ 90.413855][ T5889] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 90.425935][ T5889] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 90.501838][ T5889] team0: Port device team_slave_0 added [ 90.510759][ T5889] team0: Port device team_slave_1 added [ 90.555934][ T5889] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 90.564110][ T5889] 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. [ 90.590902][ T5889] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 90.616343][ T5889] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 90.623556][ T5889] 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. [ 90.649772][ T5889] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 90.705764][ T5889] hsr_slave_0: entered promiscuous mode [ 90.713531][ T5889] hsr_slave_1: entered promiscuous mode [ 90.916005][ T5889] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 90.929511][ T5889] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 90.941154][ T5889] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 90.952423][ T5889] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 91.033645][ T5889] 8021q: adding VLAN 0 to HW filter on device bond0 [ 91.060124][ T5889] 8021q: adding VLAN 0 to HW filter on device team0 [ 91.074550][ T3448] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 91.081980][ T3448] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 91.101431][ T146] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 91.108582][ T146] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 91.283990][ T5889] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 91.326572][ T5889] veth0_vlan: entered promiscuous mode [ 91.339642][ T5889] veth1_vlan: entered promiscuous mode [ 91.372247][ T5889] veth0_macvtap: entered promiscuous mode [ 91.382836][ T5889] veth1_macvtap: entered promiscuous mode [ 91.403819][ T5889] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 91.419341][ T5889] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 91.435991][ T146] netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 91.447488][ T146] netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 91.458151][ T146] netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 91.468162][ T146] netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 2026/01/12 17:22:51 executed programs: 0 [ 91.617871][ T51] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 91.627315][ T51] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 91.636293][ T51] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 91.650415][ T51] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 91.658087][ T51] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 91.867766][ T5933] chnl_net:caif_netlink_parms(): no params data found [ 91.947831][ T5933] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 91.955090][ T5933] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 91.962571][ T5933] bridge_slave_0: entered allmulticast mode [ 91.970169][ T5933] bridge_slave_0: entered promiscuous mode [ 91.981276][ T5933] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 91.988502][ T5933] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 91.996341][ T5933] bridge_slave_1: entered allmulticast mode [ 92.004890][ T5933] bridge_slave_1: entered promiscuous mode [ 92.040822][ T5933] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 92.052807][ T5933] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 92.087150][ T5933] team0: Port device team_slave_0 added [ 92.096317][ T5933] team0: Port device team_slave_1 added [ 92.125800][ T5933] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 92.132843][ T5933] 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. [ 92.160391][ T5933] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 92.175276][ T5933] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 92.182369][ T5933] 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. [ 92.208618][ T5933] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 92.262268][ T5933] hsr_slave_0: entered promiscuous mode [ 92.268793][ T5933] hsr_slave_1: entered promiscuous mode [ 92.275370][ T5933] debugfs: 'hsr0' already exists in 'hsr' [ 92.281260][ T5933] Cannot create hsr debugfs directory [ 92.454270][ T5933] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 92.464921][ T5933] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 92.476743][ T5933] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 92.487822][ T5933] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 92.521997][ T5933] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 92.529373][ T5933] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 92.537501][ T5933] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 92.545011][ T5933] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 92.611103][ T5933] 8021q: adding VLAN 0 to HW filter on device bond0 [ 92.628121][ T12] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 92.638874][ T12] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 92.655069][ T5933] 8021q: adding VLAN 0 to HW filter on device team0 [ 92.670870][ T3448] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 92.678028][ T3448] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 92.692502][ T12] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 92.699727][ T12] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 92.881583][ T5933] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 92.922279][ T5933] veth0_vlan: entered promiscuous mode [ 92.936672][ T5933] veth1_vlan: entered promiscuous mode [ 92.971137][ T5933] veth0_macvtap: entered promiscuous mode [ 92.981189][ T5933] veth1_macvtap: entered promiscuous mode [ 93.001283][ T5933] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 93.017932][ T5933] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 93.036848][ T3013] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 93.047100][ T3013] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 93.057457][ T3013] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 93.066673][ T3013] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 93.136251][ T67] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 93.144412][ T67] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 93.184930][ T12] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 93.193952][ T12] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 SYZFAIL: failed to recv rpc [ 93.751896][ T12] netdevsim netdevsim3 netdevsim3 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 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-build2122481591=3D/tmp/go-build -gno-record-gc= c-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'go1.24.4' GOWORK=3D'' PKG_CONFIG=3D'pkg-config' git status (err=3D) HEAD detached at d6526ea3e 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=3Dd6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20251126-113115" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3Dd6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20251126-113115" ./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=3Dd6526ea3e6ad9081c902859bbb80f9f840377cb4 -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20251126-113115" -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\"d6526ea3e6ad9081c902859bbb80f9f840= 377cb4\" /usr/bin/ld: /tmp/ccWbF51D.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 ./tools/check-syzos.sh 2>/dev/null Tested on: commit: f417b7ff Add linux-next specific files for 20260109 git tree: linux-next kernel config: https://syzkaller.appspot.com/x/.config?x=3D63a1fc1b4011ac7= 6 dashboard link: https://syzkaller.appspot.com/bug?extid=3Dd97580a8cceb9b03c= 13e compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-= 1~exp1~20250708183702.136), Debian LLD 20.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D13ab299a5800= 00