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 9DDAF39E17E for ; Tue, 15 Sep 2026 11:41:02 +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=1789472464; cv=none; b=kXKTFDbh3dwurtSYlGeBSTep9lxEVcCwjRdH8AfOEtkPaMjlOrchgQZFcJnFAPGI8NdXCc4Cu3Nz6dCcCKQBhMUQsNXsgJC8JYZDSWvoNS+hMQ7kkKk2d3oSNJ1YWLFEyKBOlCNgsFNUtZUTXWibGmaOorzG0+Q+c/Xqh+u/Cf8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789472464; c=relaxed/simple; bh=sbdK1Wj4msl7y1y2DnPgr0EJ0vb9IyPM1Oj2U7gbIF0=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=l+cFbNgViLslMiu+tGLMJtisgmnfKiwPSMGVTEUZWC/itGUX4p4E/nXPIkFc+XYBaU09B5x/HYlCEt7RAcC8tf9tyPLI2gfioUX8wdDtLpRuT3pMV/3TzhwPMPtzpHhU7IcEmVrIITmLqsqzlxj1LNftAH2RQpEBKeItWlPoH7M= 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 5614622812f47-4b325074c26so6880765b6e.2 for ; Tue, 15 Sep 2026 04:41:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789472461; x=1790077261; 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=eC1RvQTz80yPw2q4pjFaa2bb0g3j62xhY+4ZL+zxCtM=; b=rQ+V1aUo7qb7TSXBbAWbXnFkYg2EUHmvBF1RghyXAvP+7WySLuosi8Afh0/b296Spq B5nd+yfyc/gk+ziDp1oP1092PsOOKcfbfNm6JKxHYRhDdCkUKc3tXP5o01YfVE3OIl+r 8jVjyRijLx6AVulhfi7XHUX206VohGARxMJNFLuXsLgtPZSX8RCpEHFUos+S8ANjDw5w tNSKA7ea8wZ4ALpOOJeGwm8YAipYeIYvH5+BU6CAFOjjzI0/ZpUHjOtsV01uFRgVEnGj aHoTBJP39rqj32f+Wf5HLNsCYVs0beqSby0sOSZFxxObkcw2RFCv6VQ5+nEtjXpnP+Cn MRMg== X-Gm-Message-State: AFuF++l7NSPbT6yDq+6K0YOCLd7TY8v8AmwZzYGWuUSQFdmffVgzhpvD fcgs2vwnczwfg8t53ExFVe53RBlyobuztyaD1urtlni3i8o/qrpsc+4yKfQ2PkBQo12mYjHRJAH vzkkMBSwZXa8cX678ZzMuLRiXgo//RlEHliLd35PPm3SS4VOm8bm/HDK0w/4= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4cc1:b0:6c0:853f:7e6e with SMTP id 006d021491bc7-6c53fd88fc5mr4476926eaf.7.1789472461554; Tue, 15 Sep 2026 04:41:01 -0700 (PDT) Date: Tue, 15 Sep 2026 04:41:01 -0700 In-Reply-To: <467ab5f4-b68b-4c4e-8766-33f25fc73b8en@googlegroups.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aa92ecd.a211d2ce.1a5198.02ab.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). Warning: Permanently added '10.128.1.174' (ED25519) to the list of known ho= sts. 2026/09/15 11:39:16 parsed 1 programs 2026/09/15 11:39:16 serving rpc on tcp://40329 [ 164.032451][ T5644] cgroup: Unknown subsys name 'net' [ 164.136368][ T5644] cgroup: Unknown subsys name 'cpuset' [ 164.141195][ T5644] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size =3D 127995904 bytes [ 166.199670][ T5644] Adding 124996k swap on ./swap-file. Priority:0 exte= nts:1 across:124996k=20 [ 170.039756][ T5655] 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. [ 170.066765][ T5655] ebtables: xtables 32bit compat interface no longer s= upported in namespaces and will be removed soon. [ 170.069747][ T5655] arp_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 170.748703][ T4936] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 170.750332][ T4936] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 170.751133][ T4936] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 170.794058][ T4936] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 170.795173][ T4936] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 172.618702][ T13] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 172.618731][ T13] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 172.704043][ T49] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 172.704068][ T49] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 173.936465][ T5688] ip_tables: xtables 32bit compat interface no longer = supported in namespaces and will be removed soon. [ 173.937304][ T5688] ip6_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 174.893786][ T5695] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 174.894352][ T5695] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 174.894468][ T5695] bridge_slave_0: entered allmulticast mode [ 174.895993][ T5695] bridge_slave_0: entered promiscuous mode [ 174.909520][ T5695] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 174.910196][ T5695] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 174.910684][ T5695] bridge_slave_1: entered allmulticast mode [ 174.917803][ T5695] bridge_slave_1: entered promiscuous mode [ 174.988942][ T5695] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 175.003307][ T5695] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 175.039371][ T5695] team0: Port device team_slave_0 added [ 175.048961][ T5695] team0: Port device team_slave_1 added [ 175.079853][ T5695] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 175.079869][ T5695] 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. [ 175.079894][ T5695] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 175.089178][ T5695] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 175.089247][ T5695] 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. [ 175.089313][ T5695] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 175.219468][ T5695] hsr_slave_0: entered promiscuous mode [ 175.220866][ T5695] hsr_slave_1: entered promiscuous mode [ 175.462685][ T5695] netdevsim netdevsim8 netdevsim0: renamed from eth0 [ 175.475140][ T5695] 8021q: adding VLAN 0 to HW filter on device netdevsi= m0 [ 175.479413][ T5695] netdevsim netdevsim8 netdevsim1: renamed from eth1 [ 175.504861][ T5695] 8021q: adding VLAN 0 to HW filter on device netdevsi= m1 [ 175.505847][ T5695] netdevsim netdevsim8 netdevsim2: renamed from eth2 [ 175.509981][ T5695] 8021q: adding VLAN 0 to HW filter on device netdevsi= m2 [ 175.538865][ T5695] netdevsim netdevsim8 netdevsim3: renamed from eth3 [ 175.550904][ T5695] 8021q: adding VLAN 0 to HW filter on device netdevsi= m3 [ 175.596778][ T5695] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 175.596992][ T5695] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 175.597537][ T5695] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 175.597930][ T5695] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 175.709168][ T5695] 8021q: adding VLAN 0 to HW filter on device bond0 [ 175.736293][ T49] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 175.737639][ T49] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 175.774915][ T5695] 8021q: adding VLAN 0 to HW filter on device team0 [ 175.793556][ T1127] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 175.793704][ T1127] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 175.826576][ T1127] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 175.826677][ T1127] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 176.299025][ T5695] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 176.565305][ T5695] veth0_vlan: entered promiscuous mode [ 176.585921][ T5695] veth1_vlan: entered promiscuous mode [ 176.650471][ T5695] veth0_macvtap: entered promiscuous mode [ 176.669091][ T5695] veth1_macvtap: entered promiscuous mode [ 176.700205][ T5695] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 176.721025][ T5695] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 176.822810][ T13] netdevsim netdevsim8 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 176.822864][ T13] netdevsim netdevsim8 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 176.822902][ T13] netdevsim netdevsim8 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 176.822938][ T13] netdevsim netdevsim8 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 176.927812][ T1127] netdevsim netdevsim8 netdevsim3 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 177.042283][ T1127] netdevsim netdevsim8 netdevsim2 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 177.748476][ T1127] netdevsim netdevsim8 netdevsim1 (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). [ 178.374034][ T1127] netdevsim netdevsim8 netdevsim0 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 179.252590][ T1127] bridge_slave_1: left allmulticast mode [ 179.252632][ T1127] bridge_slave_1: left promiscuous mode [ 179.253798][ T1127] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 179.257783][ T1127] bridge_slave_0: left allmulticast mode [ 179.257805][ T1127] bridge_slave_0: left promiscuous mode [ 179.259188][ T1127] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 179.468567][ T1127] bond0 (unregistering): (slave bond_slave_0): Releasi= ng backup interface [ 179.483504][ T1127] bond0 (unregistering): (slave bond_slave_1): Releasi= ng backup interface [ 179.485895][ T1127] bond0 (unregistering): Released all slaves [ 179.611377][ T1127] hsr_slave_0: left promiscuous mode [ 179.613582][ T1127] hsr_slave_1: left promiscuous mode [ 179.614734][ T1127] batman_adv: batadv0: Interface deactivated: batadv_s= lave_0 [ 179.614773][ T1127] batman_adv: batadv0: Removing interface: batadv_slav= e_0 [ 179.618745][ T1127] batman_adv: batadv0: Interface deactivated: batadv_s= lave_1 [ 179.618773][ T1127] batman_adv: batadv0: Removing interface: batadv_slav= e_1 [ 179.685609][ T1127] veth1_macvtap: left promiscuous mode [ 179.685678][ T1127] veth0_macvtap: left promiscuous mode [ 179.685913][ T1127] veth1_vlan: left promiscuous mode [ 179.686015][ T1127] veth0_vlan: left promiscuous mode [ 180.098022][ T1127] team0 (unregistering): Port device team_slave_1 remo= ved [ 180.130421][ T1127] team0 (unregistering): Port device team_slave_0 remo= ved [ 180.315425][ T5281] 8021q: adding VLAN 0 to HW filter on device eth1 [ 181.056031][ T5281] 8021q: adding VLAN 0 to HW filter on device eth2 [ 181.813895][ T5281] 8021q: adding VLAN 0 to HW filter on device eth4 [ 182.339157][ T5281] 8021q: adding VLAN 0 to HW filter on device eth3 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-build429373818=3D/tmp/go-build -gno-record-gcc= -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 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/cch4vc37.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: 0d2c6557 dma-buf: udmabuf: cap page count to allocatio.. 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.