Message-ID: <6965160e.050a0220.eaf7.00b1.GAE@google.com>
Date: Mon, 12 Jan 2026 07:41:02 -0800
From: syzbot <syzbot+e8cb6691a7cf68256cb8@...kaller.appspotmail.com>
To: gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org, 
	linux-usb@...r.kernel.org, oneukum@...e.com, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [usb?] memory leak in es58x_open

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

SYZFAIL: failed to recv rpc

SYZFAIL: failed to recv rpc
fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor)


Warning: Permanently added '10.128.1.250' (ED25519) to the list of known hosts.
2026/01/12 15:39:49 parsed 1 programs
[   39.963494][ T5813] cgroup: Unknown subsys name 'net'
[   40.103368][ T5813] cgroup: Unknown subsys name 'cpuset'
[   40.109916][ T5813] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[   48.347269][ T5813] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k 
[   49.687016][ T5833] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@...ck.org if you depend on this functionality.
[   49.785190][   T50] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   49.793415][   T50] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   49.801131][   T50] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   49.808915][   T50] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   49.817199][   T50] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[   50.057495][ T5862] chnl_net:caif_netlink_parms(): no params data found
[   50.132087][ T5862] bridge0: port 1(bridge_slave_0) entered blocking state
[   50.139201][ T5862] bridge0: port 1(bridge_slave_0) entered disabled state
[   50.146327][ T5862] bridge_slave_0: entered allmulticast mode
[   50.152825][ T5862] bridge_slave_0: entered promiscuous mode
[   50.160009][ T5862] bridge0: port 2(bridge_slave_1) entered blocking state
[   50.167192][ T5862] bridge0: port 2(bridge_slave_1) entered disabled state
[   50.174469][ T5862] bridge_slave_1: entered allmulticast mode
[   50.180779][ T5862] bridge_slave_1: entered promiscuous mode
[   50.198949][ T5862] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[   50.210355][ T3872] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   50.242429][ T3872] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   50.256034][ T5862] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[   50.305124][ T5862] team0: Port device team_slave_0 added
[   50.311524][ T5862] team0: Port device team_slave_1 added
[   50.353622][ T3872] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   50.372727][ T5862] batman_adv: batadv0: Adding interface: batadv_slave_0
[   50.379702][ T5862] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[   50.382412][ T3872] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   50.422457][ T5862] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[   50.443561][ T5862] batman_adv: batadv0: Adding interface: batadv_slave_1
[   50.450530][ T5862] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[   50.479376][ T5862] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[   50.520286][ T5862] hsr_slave_0: entered promiscuous mode
[   50.528206][ T5862] hsr_slave_1: entered promiscuous mode
[   50.575270][ T5862] netdevsim netdevsim1 netdevsim0: renamed from eth0
[   50.583434][ T5862] netdevsim netdevsim1 netdevsim1: renamed from eth1
[   50.593529][ T5862] netdevsim netdevsim1 netdevsim2: renamed from eth2
[   50.601231][ T5862] netdevsim netdevsim1 netdevsim3: renamed from eth3
[   50.612864][ T5862] bridge0: port 2(bridge_slave_1) entered blocking state
[   50.620170][ T5862] bridge0: port 2(bridge_slave_1) entered forwarding state
[   50.627441][ T5862] bridge0: port 1(bridge_slave_0) entered blocking state
[   50.634675][ T5862] bridge0: port 1(bridge_slave_0) entered forwarding state
[   50.652277][ T5862] 8021q: adding VLAN 0 to HW filter on device bond0
[   50.662027][ T3872] bridge0: port 1(bridge_slave_0) entered disabled state
[   50.669584][ T3872] bridge0: port 2(bridge_slave_1) entered disabled state
[   50.678510][ T5862] 8021q: adding VLAN 0 to HW filter on device team0
[   50.687662][   T35] bridge0: port 1(bridge_slave_0) entered blocking state
[   50.696353][   T35] bridge0: port 1(bridge_slave_0) entered forwarding state
[   50.706281][ T3872] bridge0: port 2(bridge_slave_1) entered blocking state
[   50.713530][ T3872] bridge0: port 2(bridge_slave_1) entered forwarding state
[   50.755069][ T5862] 8021q: adding VLAN 0 to HW filter on device batadv0
[   50.770311][ T5862] veth0_vlan: entered promiscuous mode
[   50.778084][ T5862] veth1_vlan: entered promiscuous mode
[   50.789108][ T5862] veth0_macvtap: entered promiscuous mode
[   50.796333][ T5862] veth1_macvtap: entered promiscuous mode
[   50.805818][ T5862] batman_adv: batadv0: Interface activated: batadv_slave_0
[   50.815297][ T5862] batman_adv: batadv0: Interface activated: batadv_slave_1
[   50.824977][   T66] netdevsim netdevsim1 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[   50.834158][   T66] netdevsim netdevsim1 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[   50.843049][   T66] netdevsim netdevsim1 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
2026/01/12 15:40:01 executed programs: 0
[   50.851843][   T66] netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[   50.903025][ T5134] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   50.910733][ T5134] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   50.918124][ T5134] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   50.926133][ T5134] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   50.933518][ T5134] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[   50.970628][ T5923] chnl_net:caif_netlink_parms(): no params data found
[   50.989625][ T5923] bridge0: port 1(bridge_slave_0) entered blocking state
[   50.997000][ T5923] bridge0: port 1(bridge_slave_0) entered disabled state
[   51.004306][ T5923] bridge_slave_0: entered allmulticast mode
[   51.010653][ T5923] bridge_slave_0: entered promiscuous mode
[   51.017676][ T5923] bridge0: port 2(bridge_slave_1) entered blocking state
[   51.024890][ T5923] bridge0: port 2(bridge_slave_1) entered disabled state
[   51.032192][ T5923] bridge_slave_1: entered allmulticast mode
[   51.038673][ T5923] bridge_slave_1: entered promiscuous mode
[   51.050271][ T5923] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[   51.060029][ T5923] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[   51.074182][ T5923] team0: Port device team_slave_0 added
[   51.080381][ T5923] team0: Port device team_slave_1 added
[   51.090562][ T5923] batman_adv: batadv0: Adding interface: batadv_slave_0
[   51.097738][ T5923] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[   51.124023][ T5923] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[   51.135475][ T5923] batman_adv: batadv0: Adding interface: batadv_slave_1
[   51.142668][ T5923] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1532 would solve the problem.
[   51.169658][ T5923] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[   51.189046][ T5923] hsr_slave_0: entered promiscuous mode
[   51.195147][ T5923] hsr_slave_1: entered promiscuous mode
[   51.201004][ T5923] debugfs: 'hsr0' already exists in 'hsr'
[   51.207042][ T5923] Cannot create hsr debugfs directory
[   51.234064][ T5923] netdevsim netdevsim0 netdevsim0: renamed from eth0
[   51.241753][ T5923] netdevsim netdevsim0 netdevsim1: renamed from eth1
[   51.249447][ T5923] netdevsim netdevsim0 netdevsim2: renamed from eth2
[   51.257093][ T5923] netdevsim netdevsim0 netdevsim3: renamed from eth3
[   51.269460][ T5923] bridge0: port 2(bridge_slave_1) entered blocking state
[   51.276582][ T5923] bridge0: port 2(bridge_slave_1) entered forwarding state
[   51.283826][ T5923] bridge0: port 1(bridge_slave_0) entered blocking state
[   51.290841][ T5923] bridge0: port 1(bridge_slave_0) entered forwarding state
[   51.308368][ T5923] 8021q: adding VLAN 0 to HW filter on device bond0
[   51.316859][   T35] bridge0: port 1(bridge_slave_0) entered disabled state
[   51.325225][   T35] bridge0: port 2(bridge_slave_1) entered disabled state
[   51.335401][ T5923] 8021q: adding VLAN 0 to HW filter on device team0
[   51.344297][   T66] bridge0: port 1(bridge_slave_0) entered blocking state
[   51.351609][   T66] bridge0: port 1(bridge_slave_0) entered forwarding state
[   51.360918][   T35] bridge0: port 2(bridge_slave_1) entered blocking state
[   51.368021][   T35] bridge0: port 2(bridge_slave_1) entered forwarding state
[   51.409057][ T5923] 8021q: adding VLAN 0 to HW filter on device batadv0
[   51.424572][ T5923] veth0_vlan: entered promiscuous mode
[   51.432514][ T5923] veth1_vlan: entered promiscuous mode
[   51.444137][ T5923] veth0_macvtap: entered promiscuous mode
[   51.451047][ T5923] veth1_macvtap: entered promiscuous mode
[   51.460333][ T5923] batman_adv: batadv0: Interface activated: batadv_slave_0
[   51.469762][ T5923] batman_adv: batadv0: Interface activated: batadv_slave_1
[   51.479272][ T3872] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[   51.488352][ T3872] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[   51.497509][ T3872] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[   51.506403][ T3872] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[   51.526202][ T3872] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   51.534861][ T3872] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[   51.545823][ T3872] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[   51.553870][ T3872] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
SYZFAIL: failed to recv rpc
fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor)


syzkaller build log:
go env (err=<nil>)
AR='ar'
CC='gcc'
CGO_CFLAGS='-O2 -g'
CGO_CPPFLAGS=''
CGO_CXXFLAGS='-O2 -g'
CGO_ENABLED='1'
CGO_FFLAGS='-O2 -g'
CGO_LDFLAGS='-O2 -g'
CXX='g++'
GCCGO='gccgo'
GO111MODULE='auto'
GOAMD64='v1'
GOARCH='amd64'
GOAUTH='netrc'
GOBIN=''
GOCACHE='/syzkaller/.cache/go-build'
GOCACHEPROG=''
GODEBUG=''
GOENV='/syzkaller/.config/go/env'
GOEXE=''
GOEXPERIMENT=''
GOFIPS140='off'
GOFLAGS=''
GOGCCFLAGS='-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/tmp/go-build3306654363=/tmp/go-build -gno-record-gcc-switches'
GOHOSTARCH='amd64'
GOHOSTOS='linux'
GOINSECURE=''
GOMOD='/syzkaller/jobs-2/linux/gopath/src/github.com/google/syzkaller/go.mod'
GOMODCACHE='/syzkaller/jobs-2/linux/gopath/pkg/mod'
GONOPROXY=''
GONOSUMDB=''
GOOS='linux'
GOPATH='/syzkaller/jobs-2/linux/gopath'
GOPRIVATE=''
GOPROXY='https://proxy.golang.org,direct'
GOROOT='/usr/local/go'
GOSUMDB='sum.golang.org'
GOTELEMETRY='local'
GOTELEMETRYDIR='/syzkaller/.config/go/telemetry'
GOTMPDIR=''
GOTOOLCHAIN='auto'
GOTOOLDIR='/usr/local/go/pkg/tool/linux_amd64'
GOVCS=''
GOVERSION='go1.24.4'
GOWORK=''
PKG_CONFIG='pkg-config'

git status (err=<nil>)
HEAD detached at d6526ea3e
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/contributing.md#using-syz-env
go list -f '{{.Stale}}' -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115"  ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115"  ./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/contributing.md#using-syz-env
bin/syz-sysgen
touch .descriptions
GOOS=linux GOARCH=amd64 go build -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d6526ea3e6ad9081c902859bbb80f9f840377cb4 -X github.com/google/syzkaller/prog.gitRevisionDate=20251126-113115"  -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog
mkdir -p ./bin/linux_amd64
g++ -o ./bin/linux_amd64/syz-executor executor/executor.cc \
	-m64 -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-format-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -static-pie -std=c++17 -I. -Iexecutor/_include   -DGOOS_linux=1 -DGOARCH_amd64=1 \
	-DHOSTGOOS_linux=1 -DGIT_REVISION=\"d6526ea3e6ad9081c902859bbb80f9f840377cb4\"
/usr/bin/ld: /tmp/ccZk5Jco.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
./tools/check-syzos.sh 2>/dev/null



Tested on:

commit:         ea1013c1 Merge tag 'bpf-fixes' of git://git.kernel.org..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel config:  https://syzkaller.appspot.com/x/.config?x=d60836e327fd6756
dashboard link: https://syzkaller.appspot.com/bug?extid=e8cb6691a7cf68256cb8
compiler:       gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=122ee5fa580000

Powered by blists - more mailing lists