From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f70.google.com (mail-oa1-f70.google.com [209.85.160.70]) (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 A6F6315E97 for ; Tue, 30 Dec 2025 14:18:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767104286; cv=none; b=hBrynOEr16gVLbPaEXaU/lFEpiaQUxnjHwi3vBM/jby7XEezBWemE7Oh6C59erxBKdqfHd7Jj5Egef+Ea9pYQ3MSbJank4wsuAWRLi1Geh03oScS8eU4JY5Wtg+yGi3kXevtFGFpcHfjjVxEIoTabF/fsymqnYRsArk6bDoa7/E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767104286; c=relaxed/simple; bh=8zNp657qmuZBnxTgveq3nR6a/67JRsFefU4Gpp1d3Nk=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=u8GersHOcLoWAGSesomzMfjiAyI+nzfQu7Oi1qesav/k9FuKz/8D8E7vVUHcqX5Uz3Y/iNCG1SWrbKxskX4BawksdI1y1DnWlzpwaAGGdtFP7McmZgU40FwmDUQWLQQrjuHDNL/C1QaRUYwZcEWNkqvIJa6o865hCuELeEv1S34= 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=209.85.160.70 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-oa1-f70.google.com with SMTP id 586e51a60fabf-3ec31d72794so17806764fac.0 for ; Tue, 30 Dec 2025 06:18:02 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1767104281; x=1767709081; 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=PWGRO1/5KPyMV29gDoEAIuIgf4M27RHNjnPpdac11aM=; b=INcdi9WS4LZZuOm2WJQ0PEMddmYLz6qigaWKLQvLGaSEL/cuUltHwmp7riqcwpqKlH oSOEwqzaRMYZQZwly+ZkRGGFHU6ooJcTZslBYX2wFkaj5+UrBo1EXjcDQL1Tjz3Ws5Bt Pjo7Ry3uxZJ5fGPd2x1yvFA+hxTwjK0IiluL5Vh8oGLM3o6JELxQSPE5ugf0gy73gBnz b7r10Qx/AW8B6IzxixAajN9xsbSExyLWAqy3NFsOpyLd/+VTUNnD347kjIUIu8bWyhZW QXe75kVztTKgwJvV4H9UM4UXRfH9xfuHQXpckb+W7K1eQTD1I57DRfY+N38PYha+1t/7 i4UQ== X-Gm-Message-State: AOJu0Yz6wXtt5oxn4KisIAl0i9QKBFbWp9nns6WJyppzQU+lYNsy4+G1 n5TN66GFJCIRe1D/E8l2Wn1IdAssvFMSTzgJup+h2DpgsRkVFfFeXbPk/2e/h18uPMGSjS8Oh/k 8rYrpoz9kzRbbnU6XgfXygy3jBzXyIfu42wBOIv4xXkw3eUXOdbSTCFm1TZI= X-Google-Smtp-Source: AGHT+IEgimsRh8b2CdUBzfjkHdZpHxVTcMK9WZaRvRrQIRBFzN031WqiMaonfSTFFurAlXAIUIDuXHw+S3LLnCmtp3ywVZ4HIjFX Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:6483:b0:65b:5366:a6e2 with SMTP id 006d021491bc7-65cfe749412mr11535675eaf.26.1767104281605; Tue, 30 Dec 2025 06:18:01 -0800 (PST) Date: Tue, 30 Dec 2025 06:18:01 -0800 In-Reply-To: <051966f4-da73-4855-9f41-b41fd045bf2a@I-love.SAKURA.ne.jp> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6953df19.050a0220.a1b6.02fc.GAE@google.com> Subject: Re: [syzbot] [net?] INFO: task hung in new_device_store (5) From: syzbot To: linux-kernel@vger.kernel.org, penguin-kernel@i-love.sakura.ne.jp, 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) Warning: Permanently added '10.128.10.21' (ED25519) to the list of known ho= sts. 1970/01/01 00:00:33 parsed 1 programs [ 34.595053][ T6574] cgroup: Unknown subsys name 'net' [ 34.745068][ T6574] cgroup: Unknown subsys name 'cpuset' [ 34.746978][ T6574] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size =3D 127995904 bytes [ 34.917455][ T6574] Adding 124996k swap on ./swap-file. Priority:0 exte= nts:1 across:124996k SS [ 42.237282][ T53] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 42.239113][ T53] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 42.240666][ T53] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 42.242510][ T53] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 42.244658][ T53] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 42.318133][ T6589] 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. [ 42.330851][ T41] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 42.330883][ T41] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 42.358127][ T41] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 42.359482][ T41] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 42.936079][ T6631] chnl_net:caif_netlink_parms(): no params data found [ 43.065956][ T6631] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 43.067590][ T6631] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 43.069087][ T6631] bridge_slave_0: entered allmulticast mode [ 43.070758][ T6631] bridge_slave_0: entered promiscuous mode [ 43.105741][ T6631] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 43.107034][ T6631] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 43.108357][ T6631] bridge_slave_1: entered allmulticast mode [ 43.109850][ T6631] bridge_slave_1: entered promiscuous mode [ 43.130851][ T6631] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 43.138345][ T6631] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 43.198443][ T6631] team0: Port device team_slave_0 added [ 43.200373][ T6631] team0: Port device team_slave_1 added [ 43.230111][ T6631] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 43.231292][ T6631] 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. [ 43.237324][ T6631] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 43.255103][ T6631] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 43.259539][ T6631] 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. [ 43.264470][ T6631] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 43.307858][ T6631] hsr_slave_0: entered promiscuous mode [ 43.309501][ T6631] hsr_slave_1: entered promiscuous mode [ 43.528843][ T6631] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 43.533089][ T6631] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 43.538635][ T6631] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 43.541207][ T6631] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 43.567146][ T6631] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.572525][ T6631] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.578588][ T5188] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 43.578639][ T5188] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 43.581070][ T41] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 43.581088][ T41] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 43.710104][ T6631] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 43.730903][ T6631] veth0_vlan: entered promiscuous mode [ 43.734344][ T6631] veth1_vlan: entered promiscuous mode [ 43.741716][ T6631] veth0_macvtap: entered promiscuous mode [ 43.744783][ T6631] veth1_macvtap: entered promiscuous mode [ 43.749309][ T6631] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 43.752345][ T6631] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 43.824087][ T825] netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 43.883955][ T825] netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 43.885487][ T825] netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 43.903861][ T825] netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 1970/01/01 00:00:43 executed programs: 0 [ 43.991539][ T6162] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 43.993239][ T6162] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 43.995049][ T6162] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 43.996597][ T6162] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 43.998242][ T6162] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 44.063365][ T6685] chnl_net:caif_netlink_parms(): no params data found [ 44.087212][ T6685] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 44.087293][ T6685] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 44.087344][ T6685] bridge_slave_0: entered allmulticast mode [ 44.087767][ T6685] bridge_slave_0: entered promiscuous mode [ 44.088930][ T6685] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 44.088978][ T6685] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 44.089023][ T6685] bridge_slave_1: entered allmulticast mode [ 44.089448][ T6685] bridge_slave_1: entered promiscuous mode [ 44.102408][ T6685] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 44.103304][ T6685] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 44.128118][ T6685] team0: Port device team_slave_0 added [ 44.129165][ T6685] team0: Port device team_slave_1 added [ 44.135876][ T6685] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 44.135901][ T6685] 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. [ 44.135918][ T6685] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 44.136432][ T6685] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 44.136438][ T6685] 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. [ 44.136448][ T6685] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 44.159247][ T6685] hsr_slave_0: entered promiscuous mode [ 44.160734][ T6685] hsr_slave_1: entered promiscuous mode [ 44.162193][ T6685] debugfs: 'hsr0' already exists in 'hsr' [ 44.163441][ T6685] Cannot create hsr debugfs directory [ 44.204803][ T6685] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 44.207252][ T6685] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 44.209729][ T6685] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 44.211719][ T6685] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 44.220229][ T6685] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 44.220269][ T6685] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 44.220414][ T6685] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 44.220438][ T6685] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 44.233479][ T6685] 8021q: adding VLAN 0 to HW filter on device bond0 [ 44.236569][ T5188] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 44.237964][ T5188] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 44.241410][ T6685] 8021q: adding VLAN 0 to HW filter on device team0 [ 44.245743][ T2746] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 44.245790][ T2746] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 44.248261][ T2746] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 44.248276][ T2746] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 44.299372][ T6685] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 44.309235][ T6685] veth0_vlan: entered promiscuous mode [ 44.311035][ T6685] veth1_vlan: entered promiscuous mode [ 44.319349][ T6685] veth0_macvtap: entered promiscuous mode [ 44.320292][ T6685] veth1_macvtap: entered promiscuous mode [ 44.323850][ T6685] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 44.325162][ T6685] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 44.327601][ T2746] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 44.327691][ T2746] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 44.327709][ T2746] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 44.327725][ T2746] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 44.352754][ T825] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 44.352779][ T825] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 44.365715][ T825] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 44.365742][ T825] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 SYZFAIL: failed to recv rpc fd=3D3 want=3D4 recv=3D0 n=3D0 (errno 9: Bad file descriptor) 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-build1018672540=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=3Darm64 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_arm64/syz-execprog github.com/google/syzkaller/tools/syz-execprog mkdir -p ./bin/linux_arm64 aarch64-linux-gnu-g++ -o ./bin/linux_arm64/syz-executor executor/executor.c= c \ -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-l= arger-than=3D16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-ove= rflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -stati= c-pie -std=3Dc++17 -I. -Iexecutor/_include -DGOOS_linux=3D1 -DGOARCH_arm6= 4=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"d6526ea3e6ad9081c902859bbb80f9f840= 377cb4\" /usr/lib/gcc-cross/aarch64-linux-gnu/12/../../../../aarch64-linux-gnu/bin/l= d: /tmp/ccCZ6pDV.o: in function `Connection::Connect(char const*, char cons= t*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEP= KcS1_]+0xd8): warning: Using 'gethostbyname' in statically linked applicati= ons requires at runtime the shared libraries from the glibc version used fo= r linking ./tools/check-syzos.sh 2>/dev/null Tested on: commit: 8640b745 Merge tag 'kbuild-fixes-6.19-1' of git://git... git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3D8a8594efdc14f07= a dashboard link: https://syzkaller.appspot.com/bug?extid=3D05f9cecd28e356241= aba compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-= 1~exp1~20250708183702.136), Debian LLD 20.1.8 userspace arch: arm64 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D11ed749a5800= 00