From: syzbot <syzbot+9ca2c9f85bd8b5e46516@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com,
valigurasm@gmail.com
Subject: Re: [syzbot] [usb?] INFO: task hung in usbatm_usb_disconnect (2)
Date: Wed, 23 Sep 2026 15:01:02 -0700 [thread overview]
Message-ID: <6ab44c1e.fb6b21f1.1b3075.0002.GAE@google.com> (raw)
In-Reply-To: <CANfDJ7LzXYw=ZoG8Qx=Gu81SDpGSQDSg-paPQVpZo_+dTGGA7w@mail.gmail.com>
Hello,
syzbot tried to test the proposed patch but the build/boot failed:
lost connection to test machine
Warning: Permanently added '10.128.1.106' (ED25519) to the list of known hosts.
2026/09/23 21:58:53 parsed 1 programs
2026/09/23 21:58:53 serving rpc on tcp://36741
[ 108.303160][ T923] cfg80211: failed to load regulatory.db
[ 112.594660][ T5628] cgroup: Unknown subsys name 'net'
[ 112.732732][ T5628] cgroup: Unknown subsys name 'cpuset'
[ 112.746517][ T5628] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[ 114.653895][ T5628] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 118.241459][ T5649] soft_limit_in_bytes is deprecated and will be removed. Writing any value to this file has no effect. Please report your usecase to linux-mm@kvack.org if you depend on this functionality.
[ 118.312791][ T5649] ebtables: xtables 32bit compat interface no longer supported in namespaces and will be removed soon.
[ 118.342551][ T5649] arp_tables: xtables 32bit compat interface no longer supported in namespaces and will be removed soon.
[ 118.935095][ T1161] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 118.935132][ T1161] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 119.314186][ T60] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 119.314208][ T60] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 119.514008][ T5659] ip_tables: xtables 32bit compat interface no longer supported in namespaces and will be removed soon.
[ 119.514671][ T5659] ip6_tables: xtables 32bit compat interface no longer supported in namespaces and will be removed soon.
[ 120.499036][ T5685] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[ 120.504897][ T5685] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[ 120.505931][ T5685] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[ 120.507278][ T5685] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[ 120.541791][ T5685] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[ 122.840866][ T5680] bridge0: port 1(bridge_slave_0) entered blocking state
[ 122.841743][ T5680] bridge0: port 1(bridge_slave_0) entered disabled state
[ 122.842082][ T5680] bridge_slave_0: entered allmulticast mode
[ 122.862531][ T5680] bridge_slave_0: entered promiscuous mode
[ 122.889547][ T5680] bridge0: port 2(bridge_slave_1) entered blocking state
[ 122.889656][ T5680] bridge0: port 2(bridge_slave_1) entered disabled state
[ 122.889794][ T5680] bridge_slave_1: entered allmulticast mode
[ 122.891937][ T5680] bridge_slave_1: entered promiscuous mode
[ 122.984739][ T5680] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link
[ 123.001661][ T5680] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link
[ 123.051936][ T5680] team0: Port device team_slave_0 added
[ 123.055615][ T5680] team0: Port device team_slave_1 added
[ 123.112267][ T5680] batman_adv: batadv0: Adding interface: batadv_slave_0
[ 123.112288][ T5680] 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.
[ 123.112327][ T5680] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active
[ 123.116516][ T5680] batman_adv: batadv0: Adding interface: batadv_slave_1
[ 123.116534][ T5680] 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.
[ 123.116558][ T5680] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
[ 123.261249][ T5680] hsr_slave_0: entered promiscuous mode
[ 123.262263][ T5680] hsr_slave_1: entered promiscuous mode
[ 123.471857][ T5680] netdevsim netdevsim8 netdevsim0: renamed from eth0
[ 123.487856][ T5680] 8021q: adding VLAN 0 to HW filter on device netdevsim0
[ 123.489120][ T5680] netdevsim netdevsim8 netdevsim1: renamed from eth1
[ 123.493156][ T5680] 8021q: adding VLAN 0 to HW filter on device netdevsim1
[ 123.494176][ T5680] netdevsim netdevsim8 netdevsim2: renamed from eth2
[ 123.504829][ T5680] 8021q: adding VLAN 0 to HW filter on device netdevsim2
[ 123.507973][ T5680] netdevsim netdevsim8 netdevsim3: renamed from eth3
[ 123.548418][ T5680] 8021q: adding VLAN 0 to HW filter on device netdevsim3
[ 123.652099][ T5680] 8021q: adding VLAN 0 to HW filter on device bond0
[ 123.685093][ T5680] 8021q: adding VLAN 0 to HW filter on device team0
[ 123.702139][ T60] bridge0: port 1(bridge_slave_0) entered blocking state
[ 123.702279][ T60] bridge0: port 1(bridge_slave_0) entered forwarding state
[ 123.730774][ T78] bridge0: port 2(bridge_slave_1) entered blocking state
[ 123.730885][ T78] bridge0: port 2(bridge_slave_1) entered forwarding state
[ 124.170694][ T5680] 8021q: adding VLAN 0 to HW filter on device batadv0
[ 124.430316][ T5680] veth0_vlan: entered promiscuous mode
[ 124.447342][ T5680] veth1_vlan: entered promiscuous mode
[ 124.488229][ T5680] veth0_macvtap: entered promiscuous mode
[ 124.492929][ T5680] veth1_macvtap: entered promiscuous mode
[ 124.527631][ T5680] batman_adv: batadv0: Interface activated: batadv_slave_0
[ 124.540115][ T5680] batman_adv: batadv0: Interface activated: batadv_slave_1
execution of simple program fails: NOTFAIL: arptable checkpoint: getsockopt(ARPT_SO_GET_ENTRIES) failed. table=filter (errno 22: Invalid argument).
[ 124.647568][ T1161] netdevsim netdevsim8 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0
[ 124.647619][ T1161] netdevsim netdevsim8 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0
[ 124.647655][ T1161] netdevsim netdevsim8 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0
[ 124.647690][ T1161] netdevsim netdevsim8 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0
[ 124.806492][ T1161] netdevsim netdevsim8 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 124.903314][ T1161] netdevsim netdevsim8 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 124.980877][ T1161] netdevsim netdevsim8 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 125.116872][ T1161] netdevsim netdevsim8 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
[ 125.883310][ T1161] bridge_slave_1: left allmulticast mode
[ 125.883361][ T1161] bridge_slave_1: left promiscuous mode
[ 125.884401][ T1161] bridge0: port 2(bridge_slave_1) entered disabled state
[ 125.920237][ T1161] bridge_slave_0: left allmulticast mode
[ 125.920268][ T1161] bridge_slave_0: left promiscuous mode
[ 125.920607][ T1161] bridge0: port 1(bridge_slave_0) entered disabled state
[ 126.095488][ T1161] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
[ 126.110922][ T1161] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
[ 126.112236][ T1161] bond0 (unregistering): Released all slaves
[ 126.223248][ T1161] hsr_slave_0: left promiscuous mode
[ 126.226835][ T1161] hsr_slave_1: left promiscuous mode
[ 126.233387][ T1161] batman_adv: batadv0: Interface deactivated: batadv_slave_0
[ 126.233431][ T1161] batman_adv: batadv0: Removing interface: batadv_slave_0
[ 126.241512][ T1161] batman_adv: batadv0: Interface deactivated: batadv_slave_1
[ 126.241585][ T1161] batman_adv: batadv0: Removing interface: batadv_slave_1
[ 126.286396][ T1161] veth1_macvtap: left promiscuous mode
[ 126.286461][ T1161] veth0_macvtap: left promiscuous mode
[ 126.286648][ T1161] veth1_vlan: left promiscuous mode
[ 126.286760][ T1161] veth0_vlan: left promiscuous mode
[ 126.654559][ T1161] team0 (unregistering): Port device team_slave_1 removed
[ 126.682089][ T1161] team0 (unregistering): Port device team_slave_0 removed
[ 126.875676][ T5279] 8021q: adding VLAN 0 to HW filter on device eth1
[ 127.409335][ T5279] 8021q: adding VLAN 0 to HW filter on device eth2
[ 127.993497][ T5279] 8021q: adding VLAN 0 to HW filter on device eth3
[ 128.438182][ T5279] 8021q: adding VLAN 0 to HW filter on device eth4
[ 139.019729][ T1313] ieee802154 phy0 wpan0: encryption failed: -22
[ 139.019831][ T1313] ieee802154 phy1 wpan1: encryption failed: -22
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-build3081947690=/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='go1.26.0'
GOWORK=''
PKG_CONFIG='pkg-config'
git status (err=<nil>)
HEAD detached at 853b104bb45
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=853b104bb454141a5b0fc0e4218ec78e9f34ffb1 -X github.com/google/syzkaller/prog.gitRevisionDate=20260918-062331" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=853b104bb454141a5b0fc0e4218ec78e9f34ffb1 -X github.com/google/syzkaller/prog.gitRevisionDate=20260918-062331" ./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=853b104bb454141a5b0fc0e4218ec78e9f34ffb1 -X github.com/google/syzkaller/prog.gitRevisionDate=20260918-062331" -o ./bin/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 -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_386=1 \
-DHOSTGOOS_linux=1 -DGIT_REVISION=\"853b104bb454141a5b0fc0e4218ec78e9f34ffb1\"
/usr/bin/ld: /tmp/cctVKtvW.o: in function `Connection::Connect(char const*, char const*)':
executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x145): 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
[INFO] Unsupported architecture '386', skipping check.
Tested on:
commit: fe2ec837 Merge tag 'hid-for-linus-2026092202' of git:/..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=9d4242cb1c54cdf7
dashboard link: https://syzkaller.appspot.com/bug?extid=9ca2c9f85bd8b5e46516
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=11123405580000
next parent reply other threads:[~2026-09-23 22:01 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CANfDJ7LzXYw=ZoG8Qx=Gu81SDpGSQDSg-paPQVpZo_+dTGGA7w@mail.gmail.com>
2026-09-23 22:01 ` syzbot [this message]
[not found] <CANfDJ7J0ayM=DyztQX_CK1079M6y--j53grH3Lo-nMsvBh6Sxw@mail.gmail.com>
2026-09-24 4:39 ` syzbot
2026-09-21 15:53 syzbot
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