From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f71.google.com (mail-oo1-f71.google.com [209.85.161.71]) (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 897793AD539 for ; Thu, 17 Sep 2026 03:58:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789617485; cv=none; b=n7sQkvET6M4VA9lPCdSz9zaSnH+wYpITshtyXqipGDOujB+4nT4vwVNpMbZvh2SV36u3i4z2JfJy9BMZnopFLFVbSfqhLb/rgaE8wp1qXv7F8r2mw5Q5ysRsegh48tVlLcgqwzc6W5BFiPCcywYqb/JWhjrD9UuLNbg+0Y8o3qM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789617485; c=relaxed/simple; bh=/I60K4itcPdKDeoFYlV0JOOONS5CqWsMQKdGvLmYXfk=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=BvECH91hpdkAQVRXbQS35qYLcNbIF16YaHDEFJbzW/P6saBB/Qis6ny4YbEDVJFKXgQ7C2UCZzPza1dtXSFlZ1kqyjTGVQ2nLmL2Si2oUuw8ftaaEAcOdonX0pls8XCR4YIWZ5yzUHRpD1x9f/uTwVb6J5Oi6FWIxA17UXvlWYY= 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=209.85.161.71 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-f71.google.com with SMTP id 006d021491bc7-6c7f1caa802so401179eaf.0 for ; Wed, 16 Sep 2026 20:58:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789617482; x=1790222282; 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=3eON63qMvssZ7WPA4vke2VDR1fBCT2cQ8L5ilsw9Mgg=; b=Nga9TzHTa3JHhXX3v9ctoiQCyWa4O5QNlxgiDGNB55p/PvLMYK4Pa43ix18lANHdLm yZ7w8yQTpAUlTPMNCHdU7XdELFLM2Pjjs6S6X1XA4Qig96Qpc6wR7G1PBn+BTzyXIY9y W/m0t8PweUmqhetm+8ERomYQWwUcifVsUeNzHfdKbPW7ZuITi0PNrFOzqZ/qmR1jwVyY cPzW4xUM20HAQtibLHMHo+M7AnShxzMaYk5g6Ui7VBkea2pC3AxAzmr3lYzVdZWNMHDm sGCt/YtBhcYWiCBf6dHXAL7suuF9Y6Byes57m9seK+VoNJK1Z1VomgTx11Ofjszymufj TEQQ== X-Forwarded-Encrypted: i=1; AKwUvBzsNZO/Rye2GVp6Tmrc1N7JayU8c8LkhTuVPUoT+wtP3CpqZZ/PAPKzRO6k23W2UA/eio8A2Yb+I3I7NmE=@vger.kernel.org X-Gm-Message-State: AFuF++nBMGcvQcdeFh7ob5Oj9gZ8jcko6/xjBUVXMm73zPGb9MT37f2y wdw+KDQN91IbkLaZCWguMsXoEngZXtZeU32UE04bKxoc1YoZCRnI7iMV7bAYBfjDgFYXLrTHbIl /pu/53tYb9qKsUXTqrXutNqa1Ww5PYHQx2ylUlTOxwAuVBnPDG9CnIdqX/FA= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1845:b0:6b7:46fa:169f with SMTP id 006d021491bc7-6c7d45ecda4mr4636208eaf.52.1789617482044; Wed, 16 Sep 2026 20:58:02 -0700 (PDT) Date: Wed, 16 Sep 2026 20:58:02 -0700 In-Reply-To: <6aab3f26.0d1f51e9.29e58a.f7e3SMTPIN_ADDED_BROKEN@gmr-mx.google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6aab654a.71f81b7d.278072.000f.GAE@google.com> Subject: Re: [syzbot] [kvm?] INFO: task hung in kvm_gmem_release (2) From: syzbot To: jchuang26@m.fudan.edu.cn, linux-kernel@vger.kernel.org, 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) execution of simple program fails: NOTFAIL: arptable checkpoint: getsockopt= (ARPT_SO_GET_ENTRIES) failed. table=3Dfilter (errno 22: Invalid argument). [ 97.772398][ T30] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.171' (ED25519) to the list of known ho= sts. 2026/09/17 03:56:49 parsed 1 programs 2026/09/17 03:56:49 serving rpc on tcp://36781 [ 107.425166][ T5633] cgroup: Unknown subsys name 'net' [ 107.545023][ T5633] cgroup: Unknown subsys name 'cpuset' [ 107.548768][ T5633] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size =3D 127995904 bytes [ 109.417916][ T5633] Adding 124996k swap on ./swap-file. Priority:0 exte= nts:1 across:124996k=20 [ 112.955691][ T5646] 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. [ 112.962789][ T5646] ebtables: xtables 32bit compat interface no longer s= upported in namespaces and will be removed soon. [ 112.996505][ T5646] arp_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 113.265373][ T5649] ip_tables: xtables 32bit compat interface no longer = supported in namespaces and will be removed soon. [ 113.265924][ T5649] ip6_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 115.512391][ T5665] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 115.513183][ T5665] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 115.513330][ T5665] bridge_slave_0: entered allmulticast mode [ 115.515484][ T5665] bridge_slave_0: entered promiscuous mode [ 115.529061][ T5665] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 115.529366][ T5665] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 115.549236][ T5665] bridge_slave_1: entered allmulticast mode [ 115.557769][ T5665] bridge_slave_1: entered promiscuous mode [ 115.630326][ T5665] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 115.634285][ T5665] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 115.686289][ T5665] team0: Port device team_slave_0 added [ 115.689012][ T5665] team0: Port device team_slave_1 added [ 115.730273][ T5665] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 115.730299][ T5665] 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. [ 115.730326][ T5665] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 115.733142][ T5665] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 115.733159][ T5665] 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. [ 115.733183][ T5665] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 115.862291][ T5665] hsr_slave_0: entered promiscuous mode [ 115.863274][ T5665] hsr_slave_1: entered promiscuous mode [ 116.076825][ T5665] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 116.092514][ T5665] 8021q: adding VLAN 0 to HW filter on device netdevsi= m0 [ 116.093733][ T5665] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 116.098383][ T5665] 8021q: adding VLAN 0 to HW filter on device netdevsi= m1 [ 116.099220][ T5665] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 116.134480][ T5665] 8021q: adding VLAN 0 to HW filter on device netdevsi= m2 [ 116.135457][ T5665] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 116.139947][ T5665] 8021q: adding VLAN 0 to HW filter on device netdevsi= m3 [ 116.197762][ T5665] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 116.198152][ T5665] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 116.199090][ T5665] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 116.199183][ T5665] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 116.311983][ T5665] 8021q: adding VLAN 0 to HW filter on device bond0 [ 116.335679][ T35] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 116.336716][ T35] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 116.366715][ T5665] 8021q: adding VLAN 0 to HW filter on device team0 [ 116.383604][ T1025] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 116.383705][ T1025] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 116.407438][ T35] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 116.407552][ T35] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 116.844519][ T5665] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 117.096930][ T5665] veth0_vlan: entered promiscuous mode [ 117.113794][ T5665] veth1_vlan: entered promiscuous mode [ 117.156179][ T5665] veth0_macvtap: entered promiscuous mode [ 117.167677][ T5665] veth1_macvtap: entered promiscuous mode [ 117.193491][ T5665] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 117.212241][ T5665] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 117.232386][ T35] netdevsim netdevsim4 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 117.280820][ T12] netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 117.281325][ T12] netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 117.281370][ T12] netdevsim netdevsim4 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 117.396824][ T35] netdevsim netdevsim4 netdevsim3 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 117.447398][ T52] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 117.458211][ T52] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 117.468719][ T52] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 117.472847][ T52] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 117.480842][ T52] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 117.517254][ T35] netdevsim netdevsim4 netdevsim2 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 117.859496][ T1025] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 117.859521][ T1025] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 117.918179][ T140] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 117.918204][ T140] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 118.615243][ T35] netdevsim netdevsim4 netdevsim1 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 119.627933][ T35] netdevsim netdevsim4 netdevsim0 (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). [ 120.427475][ T35] bridge_slave_1: left allmulticast mode [ 120.427525][ T35] bridge_slave_1: left promiscuous mode [ 120.429778][ T35] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 120.462567][ T35] bridge_slave_0: left allmulticast mode [ 120.462600][ T35] bridge_slave_0: left promiscuous mode [ 120.462856][ T35] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 120.719836][ T35] bond0 (unregistering): (slave bond_slave_0): Releasi= ng backup interface [ 120.737618][ T35] bond0 (unregistering): (slave bond_slave_1): Releasi= ng backup interface [ 120.752620][ T35] bond0 (unregistering): Released all slaves [ 120.907249][ T35] hsr_slave_0: left promiscuous mode [ 120.914686][ T35] hsr_slave_1: left promiscuous mode [ 120.922848][ T35] batman_adv: batadv0: Interface deactivated: batadv_s= lave_0 [ 120.922909][ T35] batman_adv: batadv0: Removing interface: batadv_slav= e_0 [ 120.940373][ T35] batman_adv: batadv0: Interface deactivated: batadv_s= lave_1 [ 120.940400][ T35] batman_adv: batadv0: Removing interface: batadv_slav= e_1 [ 120.972218][ T35] veth1_macvtap: left promiscuous mode [ 120.972279][ T35] veth0_macvtap: left promiscuous mode [ 120.972394][ T35] veth1_vlan: left promiscuous mode [ 120.972483][ T35] veth0_vlan: left promiscuous mode [ 121.426768][ T35] team0 (unregistering): Port device team_slave_1 remo= ved [ 121.462985][ T35] team0 (unregistering): Port device team_slave_0 remo= ved [ 121.649607][ T5279] 8021q: adding VLAN 0 to HW filter on device eth1 [ 122.528940][ T5279] 8021q: adding VLAN 0 to HW filter on device eth2 [ 123.247846][ T5279] 8021q: adding VLAN 0 to HW filter on device eth3 [ 123.683122][ 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-build175183130=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 1fe56c0af80 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=3D1fe56c0af80df10ab9f07819d9fa709dc9971ae1 -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20260910-094642" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3D1fe56c0af80df10ab9f07819d9fa709dc9971ae1 -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20260910-094642" ./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=3D1fe56c0af80df10ab9f07819d9fa709dc9971ae1 -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20260910-094642" -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\"1fe56c0af80df10ab9f07819d9fa709dc9= 971ae1\" /usr/bin/ld: /tmp/cc10CeFE.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: 238650ef Merge tag 'powerpc-7.3-4' of git://git.kernel.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3D5e4e3a0e188a497= e dashboard link: https://syzkaller.appspot.com/bug?extid=3Dab6273c58262b9de5= 6d9 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-= 1~exp1~20260613092250.77), Debian LLD 22.1.8 userspace arch: i386 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D1542b9255800= 00