From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f199.google.com (mail-oi1-f199.google.com [209.85.167.199]) (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 E958E35B632 for ; Wed, 16 Sep 2026 05:39:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789537145; cv=none; b=H1s2AUD9hYCZqdtAChLKfe53GaO5n1AbiukzkHhUxE3/wqCwhiiv306/Lu4zx/2omRfgwEUCUlNVkpl6lOlTyzRMeoN3VmyQcyex/O53lqjb8Xy/6vrdrE5GUThwjdcPSx3OPRoC5cBUyzDwmSvjKt97zGQEOdtEKjMo9UF16go= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789537145; c=relaxed/simple; bh=a43s/9tQ1UFMbPlNRp8ZB4FMsmBZSSARJkao5QgjrHA=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=f53nBpcZV8ciO+PKjtTNiGWpAamI9amrYWh1X2U17o4TMGio8Rsv0ZuQsh7nR7ajVfYspEMAxmCd/E3m/zW4oclH/RlbvVlwUv3waoMqXEKe0d5s1ds94DVc9t8pyLVC/nToSxQqSpz5u3tEWKD0o888mLuZTz+jBV52wf86amY= 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=209.85.167.199 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-f199.google.com with SMTP id 5614622812f47-4ab8b4887d4so3828893b6e.1 for ; Tue, 15 Sep 2026 22:39:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789537143; x=1790141943; 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=mq52F4Td//LH7OPVQoJApvUSsDGDHjBE1peH+X+HP+I=; b=1PJt7D09Tp/NaxjncqtiiUWzMgTq/7/fl7ZDmOw3AtZPthJTacGOrFsJEgwQQVqe1x f8/GIHPHx7ozWUTHU2AlFLv4KzAmKhHNBZFniyvbGUrpPokvx0p6GFBBR95IB50EPcQ+ cY5kLw0ZGfnJAllhfHvVtKvA0JRwhDDhx2F+oP7FvPpba4uPjyTT3tpEXXMYp5ICe2Hh PZwhCrwQP5ERMrGt1Ucoz+vHIbXWtBVyrq93FitI22LBIZbO6GEnvEkihzpStdGT5Yfo dyAsNn8eoueZ05lQzQ9JTm0L9HoP7myO6MEgBjrRhVoSxAS1tlYPaOh4LNxzPKk6gk07 ZGug== X-Gm-Message-State: AFuF++nrsMppVdRAPcU29qFBCYyXxCC3pHe5XZ4tw8pEBVzyG7U0J1Lj 5AmjGyX8vhMVMJMFs1YwLD6uCFPlsb6rRnA/v/02/gzky4Vt3/jmNGMj4vinK5hMRYJJQ90+Cbd cp25Lp0DK5u7Aqv5aZQHnQ6Lk3Y0vxpH6eEBql+o7+Z8afI1YzF24kMsOd18= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:2f09:b0:4b3:941a:e7c7 with SMTP id 5614622812f47-4ca4a0e136bmr1519555b6e.15.1789537142878; Tue, 15 Sep 2026 22:39:02 -0700 (PDT) Date: Tue, 15 Sep 2026 22:39:02 -0700 In-Reply-To: <2212efb6-e38c-43c3-97c1-5139c55ee576n@googlegroups.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aaa2b76.f81106d8.2ab401.0072.GAE@google.com> Subject: Re: [syzbot] [media?] [dri?] WARNING in udmabuf_create From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, tao1.yu@intel.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). no interfaces have a carrier [ 83.165290][ T5279] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.176651][ T5279] eql: remember to turn off Van-Jacobson compression o= n your slave devices Starting crond: OK Starting sshd: OK syzkaller syzkaller login: [ 114.243158][ T9] cfg80211: failed to load regulatory= .db Warning: Permanently added '10.128.0.233' (ED25519) to the list of known ho= sts. 2026/09/16 05:37:24 parsed 1 programs 2026/09/16 05:37:24 serving rpc on tcp://37581 [ 121.891431][ T5631] cgroup: Unknown subsys name 'net' [ 122.014742][ T5631] cgroup: Unknown subsys name 'cpuset' [ 122.024234][ T5631] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size =3D 127995904 bytes [ 123.962440][ T5631] Adding 124996k swap on ./swap-file. Priority:0 exte= nts:1 across:124996k=20 [ 128.498958][ T5644] 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. [ 128.521252][ T5644] ebtables: xtables 32bit compat interface no longer s= upported in namespaces and will be removed soon. [ 128.524188][ T5644] arp_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 129.376802][ T5653] ip_tables: xtables 32bit compat interface no longer = supported in namespaces and will be removed soon. [ 129.377579][ T5653] ip6_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 129.514072][ T5659] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 129.514855][ T5659] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 129.515648][ T5659] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 129.516637][ T5659] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 129.517407][ T5659] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 130.480696][ T45] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 130.480735][ T45] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 130.543973][ T59] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 130.543998][ T59] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 132.024638][ T5677] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 132.025532][ T5677] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 132.025672][ T5677] bridge_slave_0: entered allmulticast mode [ 132.027949][ T5677] bridge_slave_0: entered promiscuous mode [ 132.076170][ T5677] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 132.076834][ T5677] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 132.077022][ T5677] bridge_slave_1: entered allmulticast mode [ 132.102933][ T5677] bridge_slave_1: entered promiscuous mode [ 132.174547][ T5677] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 132.187486][ T5677] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 132.250540][ T5677] team0: Port device team_slave_0 added [ 132.254042][ T5677] team0: Port device team_slave_1 added [ 132.300085][ T5677] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 132.300106][ T5677] 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. [ 132.300139][ T5677] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 132.303509][ T5677] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 132.303529][ T5677] 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. [ 132.303640][ T5677] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 132.507651][ T5677] hsr_slave_0: entered promiscuous mode [ 132.509065][ T5677] hsr_slave_1: entered promiscuous mode [ 132.809314][ T5677] netdevsim netdevsim7 netdevsim0: renamed from eth0 [ 132.845685][ T5677] 8021q: adding VLAN 0 to HW filter on device netdevsi= m0 [ 132.847749][ T5677] netdevsim netdevsim7 netdevsim1: renamed from eth1 [ 132.874511][ T5677] 8021q: adding VLAN 0 to HW filter on device netdevsi= m1 [ 132.876090][ T5677] netdevsim netdevsim7 netdevsim2: renamed from eth2 [ 132.884908][ T5677] 8021q: adding VLAN 0 to HW filter on device netdevsi= m2 [ 132.887927][ T5677] netdevsim netdevsim7 netdevsim3: renamed from eth3 [ 132.915834][ T5677] 8021q: adding VLAN 0 to HW filter on device netdevsi= m3 [ 133.036266][ T5677] 8021q: adding VLAN 0 to HW filter on device bond0 [ 133.070741][ T5677] 8021q: adding VLAN 0 to HW filter on device team0 [ 133.079036][ T2225] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 133.079162][ T2225] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 133.126108][ T45] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 133.126199][ T45] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 133.813277][ T5677] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 134.186699][ T5677] veth0_vlan: entered promiscuous mode [ 134.207669][ T5677] veth1_vlan: entered promiscuous mode [ 134.293216][ T5677] veth0_macvtap: entered promiscuous mode [ 134.311660][ T5677] veth1_macvtap: entered promiscuous mode [ 134.349115][ T5677] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 134.379343][ T5677] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 134.492045][ T62] netdevsim netdevsim7 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 134.551786][ T2225] netdevsim netdevsim7 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 134.552284][ T2225] netdevsim netdevsim7 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 134.620447][ T62] netdevsim netdevsim7 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 134.799248][ T59] netdevsim netdevsim7 netdevsim3 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 135.874694][ T59] netdevsim netdevsim7 netdevsim2 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 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). [ 136.855213][ T59] netdevsim netdevsim7 netdevsim1 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 136.952225][ T59] netdevsim netdevsim7 netdevsim0 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 137.224278][ T59] bridge_slave_1: left allmulticast mode [ 137.224334][ T59] bridge_slave_1: left promiscuous mode [ 137.226112][ T59] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 137.275171][ T59] bridge_slave_0: left allmulticast mode [ 137.275201][ T59] bridge_slave_0: left promiscuous mode [ 137.275530][ T59] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 137.665003][ T59] bond0 (unregistering): (slave bond_slave_0): Releasi= ng backup interface [ 137.680748][ T59] bond0 (unregistering): (slave bond_slave_1): Releasi= ng backup interface [ 137.682596][ T59] bond0 (unregistering): Released all slaves [ 137.832212][ T59] hsr_slave_0: left promiscuous mode [ 137.832917][ T59] hsr_slave_1: left promiscuous mode [ 137.833650][ T59] batman_adv: batadv0: Interface deactivated: batadv_s= lave_0 [ 137.833676][ T59] batman_adv: batadv0: Removing interface: batadv_slav= e_0 [ 137.836225][ T59] batman_adv: batadv0: Interface deactivated: batadv_s= lave_1 [ 137.836252][ T59] batman_adv: batadv0: Removing interface: batadv_slav= e_1 [ 137.888093][ T59] veth1_macvtap: left promiscuous mode [ 137.888147][ T59] veth0_macvtap: left promiscuous mode [ 137.888227][ T59] veth1_vlan: left promiscuous mode [ 137.888334][ T59] veth0_vlan: left promiscuous mode [ 138.251598][ T59] team0 (unregistering): Port device team_slave_1 remo= ved [ 138.291619][ T59] team0 (unregistering): Port device team_slave_0 remo= ved [ 138.436400][ T5279] 8021q: adding VLAN 0 to HW filter on device eth1 [ 139.193435][ T5279] 8021q: adding VLAN 0 to HW filter on device eth2 [ 139.758608][ T5279] 8021q: adding VLAN 0 to HW filter on device eth3 [ 139.843453][ T1313] ieee802154 phy0 wpan0: encryption failed: -22 [ 139.843541][ T1313] ieee802154 phy1 wpan1: encryption failed: -22 [ 140.207942][ T5279] 8021q: adding VLAN 0 to HW filter on device eth4 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-build264506101=3D/tmp/go-build -gno-record-gcc= -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'go1.26.0' GOWORK=3D'' PKG_CONFIG=3D'pkg-config' git status (err=3D) HEAD detached at 85995287a88 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=3D85995287a888340d8818a8f3c43e2e89555eea21 -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20260902-115702" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3D85995287a888340d8818a8f3c43e2e89555eea21 -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20260902-115702" ./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=3D85995287a888340d8818a8f3c43e2e89555eea21 -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20260902-115702" -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\"85995287a888340d8818a8f3c43e2e8955= 5eea21\" /usr/bin/ld: /tmp/cc3OdTDn.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: e7c98468 udmabuf: cap page count to allocation-safe li.. git tree: https://github.com/yutao-intel/linux.git fix-dri-udmabuf_cr= eate kernel config: https://syzkaller.appspot.com/x/.config?x=3D5e4e3a0e188a497= e dashboard link: https://syzkaller.appspot.com/bug?extid=3Dbfeed181d1ce9ec87= a8f compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-= 1~exp1~20260613092250.77), Debian LLD 22.1.8 userspace arch: i386 Note: no patches were applied.