From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f70.google.com (mail-ot1-f70.google.com [209.85.210.70]) (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 EC266481FA1 for ; Tue, 15 Sep 2026 10:52:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789469531; cv=none; b=dcJESgAhUHo3+rFISnwz5hmYxy3JtZA92/RgV7N6nTWCosXz5nh+gHcvwW08ZZ0lAzpzaaxma6sRzXjWMtddR8lYSyeEr7iyGWB+qcD8CJGHiFJB+W5k7CwdcVr5PHWzJ3Dwv5LoNoNtdy/HCTCKjxITXkXohwjBE214XqTFoyQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789469531; c=relaxed/simple; bh=/4kOwKI4dthME8ZS7SdMcx4YL3Tk5QgWQx2Bs41+uhY=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=uKY2NAQZmYiYCMBTgQYU1RChAnOg6gF/keBx1GX3SyFj2WdlGJzVaZ9AnOiK0tMTxOEweNDajtA1EnnLdz6HFEPnLicNu95Ov7y1T0rxFpdmoKSHz1DNCz7roLQZdztz6as17Bc1y9U/MuUW6rvXD4Uh9S4UqlWQry1ui/uC7QY= 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=209.85.210.70 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-ot1-f70.google.com with SMTP id 46e09a7af769-7f653940ba4so6110355a34.1 for ; Tue, 15 Sep 2026 03:52:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789469525; x=1790074325; 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=lmppWa1dd4E0urch+is+k1zQJxfBJvkkU7cmZ3P1Wr4=; b=iZrNFDNDEWUN23vExREc+cWE9iNzo0+I9+f9cR9oESwXfE0UPzesQvxHLN+iuzqwAz /ad6KL9bAXnCBc9C3FYFIcadBqDHsdGE4gb204JOetv+5MTFtTZ9yYbA81nA+i8NOL55 4Z+4vLeyhEoRk+RO1bVCAZsVuPVVt2ZOxuXXaPBUCHu2e6QR1IwmyI1RiPiSUTg9biTR ezWv1nL8ZRsuLuwIpxRk6dCr5CtG+XEsFLwKy4rwRgp9vgft6iBC29SLGhswO74quZBS XZ7XKEW9emw3yPPqbygmoVw6WzvxS2uiA5EoYubOfDLqohiSrlHTp2A7myG9igGwhl4r OaFw== X-Gm-Message-State: AFuF++kPKJWuscBSb2Q64cTujcLQK0Yap9CCCy8ctAWaGdF16RvuzWZ5 81bEq9f6I7ud+7ZbaYgeTrBX0DvFst4tV8jJdKucaXuqmi12s+05sTJz6TvpX5SzJZVTBLPyTA2 1O45CQGvZldG/FxU/JjmZkcW7QJu+SL1wayqmBfDSkR7RXEhjZG1udMaLNjo= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4b98:b0:6c0:2513:3e99 with SMTP id 006d021491bc7-6c7380faddfmr197744eaf.24.1789469525079; Tue, 15 Sep 2026 03:52:05 -0700 (PDT) Date: Tue, 15 Sep 2026 03:52:05 -0700 In-Reply-To: <2baba8f8-085d-49ec-ab2d-7e7662858f6bn@googlegroups.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aa92355.4c28b7d0.c1bba.0037.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: lost connection to test machine Warning: Permanently added '10.128.0.238' (ED25519) to the list of known ho= sts. [ 97.786558][ T991] cfg80211: failed to load regulatory.db 2026/09/15 10:50:08 parsed 1 programs 2026/09/15 10:50:08 serving rpc on tcp://44173 [ 102.370241][ T5634] cgroup: Unknown subsys name 'net' [ 102.510422][ T5634] cgroup: Unknown subsys name 'cpuset' [ 102.514396][ T5634] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size =3D 127995904 bytes [ 104.351724][ T5634] Adding 124996k swap on ./swap-file. Priority:0 exte= nts:1 across:124996k=20 [ 108.056785][ T5648] 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. [ 108.062797][ T5648] ebtables: xtables 32bit compat interface no longer s= upported in namespaces and will be removed soon. [ 108.068861][ T5648] arp_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 108.582737][ T4937] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 108.583577][ T4937] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 108.584222][ T4937] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 108.585462][ T4937] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 108.609300][ T4937] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 109.734410][ T59] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 109.734443][ T59] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 109.782322][ T1166] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 109.782348][ T1166] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 110.483132][ T5676] ip_tables: xtables 32bit compat interface no longer = supported in namespaces and will be removed soon. [ 110.483793][ T5676] ip6_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 111.173280][ T5681] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 111.174077][ T5681] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 111.174210][ T5681] bridge_slave_0: entered allmulticast mode [ 111.180442][ T5681] bridge_slave_0: entered promiscuous mode [ 111.205644][ T5681] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 111.205725][ T5681] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 111.205839][ T5681] bridge_slave_1: entered allmulticast mode [ 111.207192][ T5681] bridge_slave_1: entered promiscuous mode [ 111.273019][ T5681] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 111.284131][ T5681] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 111.326721][ T5681] team0: Port device team_slave_0 added [ 111.329659][ T5681] team0: Port device team_slave_1 added [ 111.364079][ T5681] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 111.364095][ T5681] 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. [ 111.364120][ T5681] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 111.371516][ T5681] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 111.371563][ T5681] 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. [ 111.371642][ T5681] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 111.490683][ T5681] hsr_slave_0: entered promiscuous mode [ 111.491890][ T5681] hsr_slave_1: entered promiscuous mode [ 111.681668][ T5681] netdevsim netdevsim7 netdevsim0: renamed from eth0 [ 111.695207][ T5681] 8021q: adding VLAN 0 to HW filter on device netdevsi= m0 [ 111.698832][ T5681] netdevsim netdevsim7 netdevsim1: renamed from eth1 [ 111.716309][ T5681] 8021q: adding VLAN 0 to HW filter on device netdevsi= m1 [ 111.718026][ T5681] netdevsim netdevsim7 netdevsim2: renamed from eth2 [ 111.721600][ T5681] 8021q: adding VLAN 0 to HW filter on device netdevsi= m2 [ 111.722634][ T5681] netdevsim netdevsim7 netdevsim3: renamed from eth3 [ 111.730316][ T5681] 8021q: adding VLAN 0 to HW filter on device netdevsi= m3 [ 111.870717][ T5681] 8021q: adding VLAN 0 to HW filter on device bond0 [ 111.897849][ T5681] 8021q: adding VLAN 0 to HW filter on device team0 [ 111.905286][ T13] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 111.905412][ T13] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 111.937788][ T1166] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 111.937887][ T1166] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 112.340978][ T5681] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 112.604890][ T5681] veth0_vlan: entered promiscuous mode [ 112.619788][ T5681] veth1_vlan: entered promiscuous mode [ 112.660128][ T5681] veth0_macvtap: entered promiscuous mode [ 112.664268][ T5681] veth1_macvtap: entered promiscuous mode [ 112.695347][ T5681] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 112.714375][ T5681] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 112.748603][ T50] netdevsim netdevsim7 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 112.748650][ T50] netdevsim netdevsim7 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 112.748685][ T50] netdevsim netdevsim7 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 112.748718][ T50] netdevsim netdevsim7 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 112.882798][ T59] netdevsim netdevsim7 netdevsim3 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 112.981434][ T59] netdevsim netdevsim7 netdevsim2 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 113.059638][ T59] netdevsim netdevsim7 netdevsim1 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 113.129303][ T59] netdevsim netdevsim7 netdevsim0 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 114.003889][ T59] bridge_slave_1: left allmulticast mode [ 114.003941][ T59] bridge_slave_1: left promiscuous mode [ 114.005600][ T59] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 114.040756][ T59] bridge_slave_0: left allmulticast mode [ 114.040789][ T59] bridge_slave_0: left promiscuous mode [ 114.042310][ T59] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 114.373228][ T59] bond0 (unregistering): (slave bond_slave_0): Releasi= ng backup interface [ 114.391864][ T59] bond0 (unregistering): (slave bond_slave_1): Releasi= ng backup interface [ 114.394015][ T59] bond0 (unregistering): Released all slaves [ 114.560846][ T59] hsr_slave_0: left promiscuous mode [ 114.562142][ T59] hsr_slave_1: left promiscuous mode [ 114.563318][ T59] batman_adv: batadv0: Interface deactivated: batadv_s= lave_0 [ 114.563353][ T59] batman_adv: batadv0: Removing interface: batadv_slav= e_0 [ 114.565447][ T59] batman_adv: batadv0: Interface deactivated: batadv_s= lave_1 [ 114.565470][ T59] batman_adv: batadv0: Removing interface: batadv_slav= e_1 [ 114.626880][ T59] veth1_macvtap: left promiscuous mode [ 114.626941][ T59] veth0_macvtap: left promiscuous mode [ 114.627063][ T59] veth1_vlan: left promiscuous mode [ 114.627209][ T59] veth0_vlan: left promiscuous mode [ 114.939935][ T59] team0 (unregistering): Port device team_slave_1 remo= ved [ 114.960914][ T59] team0 (unregistering): Port device team_slave_0 remo= ved [ 115.141058][ T5283] 8021q: adding VLAN 0 to HW filter on device eth1 [ 115.879786][ T5283] 8021q: adding VLAN 0 to HW filter on device eth2 [ 116.704848][ T5283] 8021q: adding VLAN 0 to HW filter on device eth3 [ 117.419422][ T5283] 8021q: adding VLAN 0 to HW filter on device eth4 execution of simple program fails: NOTFAIL: arptable checkpoint: getsockopt= (ARPT_SO_GET_ENTRIES) failed. table=3Dfilter (errno 22: Invalid argument). [ 133.617311][ T1316] ieee802154 phy0 wpan0: encryption failed: -22 [ 133.617371][ T1316] ieee802154 phy1 wpan1: encryption failed: -22 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-build3857553325=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'go1.26.0' 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/ccoD0zzS.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.