From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f198.google.com (mail-oi1-f198.google.com [209.85.167.198]) (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 1D29949B1FA for ; Fri, 9 Oct 2026 09:36:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791538569; cv=none; b=dE1uUwzxr0UGA8/L9IeKsiu0oBi/HipUfGRyLxEXMmZA5s+LC3rT7Qx8b3wnv/L9VzigGBoMl/tl+cGMQTwnwnkOUSJcLbDR49R6xE0xsmfzrbFIXpzxCztnzlmavBmb1FoxMJmDRFrJaZVQx1Ce5cmEqjOG5t9vOw1wamj4Zhw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791538569; c=relaxed/simple; bh=e5mFNFCY+YpRPFnSIYrZ3JAbaXa1IKv/Cmb0/5dztMA=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=rp/h0mRm0ySjqO3B4X5jddZNfDvg9weYKjnZV9B7q7vM8LEnbYaAzHVTQZ0hX5R/rNeypgFM8YVSqIDjoxVxwdF+pIyh2IU68rGaILJgyp7T3WOg63V01whju/usCi3a4gVGRlmZ2/X8iLYu+vqioXHSee5mb+F1EOfZl8ysjPA= 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=209.85.167.198 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-f198.google.com with SMTP id 5614622812f47-4c467e19391so10930952b6e.3 for ; Fri, 09 Oct 2026 02:36:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791538562; x=1792143362; 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=3TPn/hSVpXKh5j5vQOeitEb2oZ8egKZZTrE5I1xMz4c=; b=jkOQZtw5ghbLT8G0kLSs3jb+kMXOcxCobY8eM3MAB9iLzfxdtBDypTqXn4txZM5m76 UVkb3OIcTkyOjyMi3y0lacic+QZkgOtxXwD0dKv5Ehr4H2YiAdyeeiye4SW4HZXqKwj1 X+yZXoejW6F/uB0UyXWC76aFpsmI3duU2C6K9XjzRBwvJ7W8zjL5WweeiChXZdM11I7p JfsoAunGxHwT+ioG4iRhrFRjmSHY41HpjlpEdrb8w4uDgzFteLeSPprDZa3DHx8+xQog NLJS2anPe7dbcV0ans+7padxWIv00j6r8wW6DDVtYCMc9K2pw1YEwYA6GRMxbzGm+cIG hceQ== X-Forwarded-Encrypted: i=1; AKwUvBybdU8P41BlE8O6FQSIscVzRe5XLiWZFM/7fWw1esIUmnFp/JM5uX3CMuUq+QylY3jmzf6xRtOMrXVL1cA=@vger.kernel.org X-Gm-Message-State: AFuF++knXAeL4/NUzqvgNVPWDDDX6/wTzSzQALq/RZcaTGS21rb5EK3B f+CBc+2FOvsgcotLu8bmo/b30b9NgtL+KNZ8QXW1ivHh4pwUEmuEwMvx49+AISM9JMjyG0tWn1U D00OBYaVN4tiOY+f7M9zfWiJzexXIO9tQpDQLDzYSPg1Hcz3GEV9u/UWC17U= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1303:b0:4d6:9222:99f7 with SMTP id 5614622812f47-50c59e37adcmr990347b6e.55.1791538562616; Fri, 09 Oct 2026 02:36:02 -0700 (PDT) Date: Fri, 09 Oct 2026 02:36:02 -0700 In-Reply-To: <20261009085232.236099-1-krishgulati7@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ac8b582.8cdf6287.1eb53.0042.GAE@google.com> Subject: Re: [syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in report_descriptor_read From: syzbot To: krishgulati7@gmail.com, 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). Warning: Permanently added '10.128.0.41' (ED25519) to the list of known hos= ts. 2026/10/09 09:34:35 parsed 1 programs 2026/10/09 09:34:35 serving rpc on tcp://43817 [ 102.876825][ T925] cfg80211: failed to load regulatory.db [ 106.327252][ T5632] cgroup: Unknown subsys name 'net' [ 106.439832][ T5632] cgroup: Unknown subsys name 'cpuset' [ 106.443439][ T5632] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size =3D 127995904 bytes [ 108.162061][ T5632] Adding 124996k swap on ./swap-file. Priority:0 exte= nts:1 across:124996k=20 [ 111.819814][ T5652] 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. [ 111.895801][ T5652] ebtables: xtables 32bit compat interface no longer s= upported in namespaces and will be removed soon. [ 111.896346][ T5652] arp_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 111.896898][ T5652] ip_tables: xtables 32bit compat interface no longer = supported in namespaces and will be removed soon. [ 111.902540][ T5652] ip6_tables: xtables 32bit compat interface no longer= supported in namespaces and will be removed soon. [ 114.332029][ T52] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > = 1 [ 114.341885][ T52] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > = 9 [ 114.343656][ T52] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > = 9 [ 114.361467][ T52] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > = 4 [ 114.362876][ T52] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > = 2 [ 115.050524][ T5660] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 115.050711][ T5660] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 115.050850][ T5660] bridge_slave_0: entered allmulticast mode [ 115.052750][ T5660] bridge_slave_0: entered promiscuous mode [ 115.066100][ T5660] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 115.066473][ T5660] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 115.067077][ T5660] bridge_slave_1: entered allmulticast mode [ 115.073434][ T5660] bridge_slave_1: entered promiscuous mode [ 115.203238][ T5660] bond0: (slave bond_slave_0): Enslaving as an active = interface with an up link [ 115.237612][ T5660] bond0: (slave bond_slave_1): Enslaving as an active = interface with an up link [ 115.351254][ T5660] team0: Port device team_slave_0 added [ 115.367447][ T3373] wlan0: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 115.367473][ T3373] wlan0: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 115.367963][ T5660] team0: Port device team_slave_1 added [ 115.589878][ T5660] batman_adv: batadv0: Adding interface: batadv_slave_= 0 [ 115.589899][ T5660] 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. [ 115.589927][ T5660] batman_adv: batadv0: Not using interface batadv_slav= e_0 (retrying later): interface not active [ 115.680889][ T5660] batman_adv: batadv0: Adding interface: batadv_slave_= 1 [ 115.680911][ T5660] 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. [ 115.680940][ T5660] batman_adv: batadv0: Not using interface batadv_slav= e_1 (retrying later): interface not active [ 115.793147][ T38] wlan1: Created IBSS using preconfigured BSSID 50:50:= 50:50:50:50 [ 115.793171][ T38] wlan1: Creating new IBSS network, BSSID 50:50:50:50:= 50:50 [ 115.967068][ T5660] hsr_slave_0: entered promiscuous mode [ 115.969950][ T5660] hsr_slave_1: entered promiscuous mode [ 116.396134][ T52] Bluetooth: hci0: command tx timeout [ 116.512868][ T5660] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 116.529158][ T5660] 8021q: adding VLAN 0 to HW filter on device netdevsi= m0 [ 116.530373][ T5660] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 116.539523][ T5660] 8021q: adding VLAN 0 to HW filter on device netdevsi= m1 [ 116.550138][ T5660] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 116.566932][ T5660] 8021q: adding VLAN 0 to HW filter on device netdevsi= m2 [ 116.567879][ T5660] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 116.571472][ T5660] 8021q: adding VLAN 0 to HW filter on device netdevsi= m3 [ 116.680185][ T5660] 8021q: adding VLAN 0 to HW filter on device bond0 [ 116.709742][ T5660] 8021q: adding VLAN 0 to HW filter on device team0 [ 116.726696][ T13] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 116.726857][ T13] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 116.753165][ T13] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 116.753330][ T13] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 116.868524][ T5660] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 116.940028][ T5660] veth0_vlan: entered promiscuous mode [ 116.952983][ T5660] veth1_vlan: entered promiscuous mode [ 116.991256][ T5660] veth0_macvtap: entered promiscuous mode [ 117.005351][ T5660] veth1_macvtap: entered promiscuous mode [ 117.032181][ T5660] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 117.050081][ T5660] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 117.124391][ T59] netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 117.125110][ T59] netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 117.125403][ T59] netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 117.125442][ T59] netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 f= amily 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). [ 117.799185][ T13] netdevsim netdevsim3 netdevsim3 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 119.087949][ T13] netdevsim netdevsim3 netdevsim2 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 120.448211][ T13] netdevsim netdevsim3 netdevsim1 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 120.500961][ T13] netdevsim netdevsim3 netdevsim0 (unregistering): uns= et [1, 0] type 2 family 0 port 6081 - 0 [ 120.612426][ T13] bridge_slave_1: left allmulticast mode [ 120.612473][ T13] bridge_slave_1: left promiscuous mode [ 120.613994][ T13] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 120.642935][ T13] bridge_slave_0: left allmulticast mode [ 120.642959][ T13] bridge_slave_0: left promiscuous mode [ 120.643537][ T13] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 120.800837][ T13] bond0 (unregistering): (slave bond_slave_0): Releasi= ng backup interface [ 120.803647][ T13] bond0 (unregistering): (slave bond_slave_1): Releasi= ng backup interface [ 120.829743][ T13] bond0 (unregistering): Released all slaves [ 121.362267][ T13] hsr_slave_0: left promiscuous mode [ 121.363205][ T13] hsr_slave_1: left promiscuous mode [ 121.364924][ T13] batman_adv: batadv0: Interface deactivated: batadv_s= lave_0 [ 121.365067][ T13] batman_adv: batadv0: Removing interface: batadv_slav= e_0 [ 121.387394][ T13] batman_adv: batadv0: Interface deactivated: batadv_s= lave_1 [ 121.387417][ T13] batman_adv: batadv0: Removing interface: batadv_slav= e_1 [ 121.420376][ T13] veth1_macvtap: left promiscuous mode [ 121.420458][ T13] veth0_macvtap: left promiscuous mode [ 121.420618][ T13] veth1_vlan: left promiscuous mode [ 121.421002][ T13] veth0_vlan: left promiscuous mode [ 121.712487][ T13] team0 (unregistering): Port device team_slave_1 remo= ved [ 121.730041][ T13] team0 (unregistering): Port device team_slave_0 remo= ved [ 121.880288][ T5281] 8021q: adding VLAN 0 to HW filter on device eth1 [ 122.378773][ T5281] 8021q: adding VLAN 0 to HW filter on device eth2 [ 122.808975][ T5281] 8021q: adding VLAN 0 to HW filter on device eth3 [ 123.211497][ T5281] 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-build95449590=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 1e72964b0 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=3D1e72964b0111319984575e60f266d1fa0a98abb5 -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20260817-123423" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3D1e72964b0111319984575e60f266d1fa0a98abb5 -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20260817-123423" ./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=3D1e72964b0111319984575e60f266d1fa0a98abb5 -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20260817-123423" -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\"1e72964b0111319984575e60f266d1fa0a= 98abb5\" /usr/bin/ld: /tmp/cc4sYuge.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: af32da41 Merge tag 'net-7.3-rc7' of git://git.kernel.o.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=3De54cfa0d265a296= a dashboard link: https://syzkaller.appspot.com/bug?extid=3Dbc537ca7a0efe3398= 8eb 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=3D108bb9d15800= 00