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 '[localhost]:9118' (ED25519) to the list of known hosts. 2026/02/03 12:21:16 parsed 1 programs syzkaller login: [ 90.701934][ T5311] cgroup: Unknown subsys name 'net' [ 90.785020][ T5311] cgroup: Unknown subsys name 'cpuset' [ 90.790210][ T5311] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 92.658185][ T5311] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 97.007675][ T1362] cfg80211: failed to load regulatory.db [ 98.740726][ T5333] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 100.981671][ T3030] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 100.985132][ T3030] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 101.512276][ T3089] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 101.530841][ T3089] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 102.933934][ T46] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 102.938511][ T46] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 102.942521][ T46] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 102.946620][ T46] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 102.951955][ T46] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 104.986337][ T4668] Bluetooth: hci0: command tx timeout [ 105.939921][ T5368] chnl_net:caif_netlink_parms(): no params data found [ 107.062134][ T4668] Bluetooth: hci0: command tx timeout [ 108.609221][ T5368] bridge0: port 1(bridge_slave_0) entered blocking state [ 108.621454][ T5368] bridge0: port 1(bridge_slave_0) entered disabled state [ 108.624944][ T5368] bridge_slave_0: entered allmulticast mode [ 108.641701][ T5368] bridge_slave_0: entered promiscuous mode [ 108.858681][ T5368] bridge0: port 2(bridge_slave_1) entered blocking state [ 108.877271][ T5368] bridge0: port 2(bridge_slave_1) entered disabled state [ 108.887501][ T5368] bridge_slave_1: entered allmulticast mode [ 108.908860][ T5368] bridge_slave_1: entered promiscuous mode [ 109.141602][ T4668] Bluetooth: hci0: command tx timeout [ 109.183962][ T5368] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 109.549642][ T5368] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 110.173504][ T5368] team0: Port device team_slave_0 added [ 110.182887][ T5368] team0: Port device team_slave_1 added [ 110.513134][ T5368] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 110.516364][ T5368] 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. [ 110.542146][ T5368] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 110.582409][ T5368] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 110.585514][ T5368] 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. [ 110.621430][ T5368] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 110.772376][ T5368] hsr_slave_0: entered promiscuous mode [ 110.785649][ T5368] hsr_slave_1: entered promiscuous mode [ 111.221422][ T4668] Bluetooth: hci0: command tx timeout [ 111.678112][ T5368] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 111.715197][ T5368] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 111.732040][ T5368] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 111.753087][ T5368] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 111.992367][ T5368] 8021q: adding VLAN 0 to HW filter on device bond0 [ 112.042325][ T5368] 8021q: adding VLAN 0 to HW filter on device team0 [ 112.057394][ T3030] bridge0: port 1(bridge_slave_0) entered blocking state [ 112.060595][ T3030] bridge0: port 1(bridge_slave_0) entered forwarding state [ 112.089088][ T3030] bridge0: port 2(bridge_slave_1) entered blocking state [ 112.092514][ T3030] bridge0: port 2(bridge_slave_1) entered forwarding state [ 112.610390][ T5368] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 112.706004][ T5368] veth0_vlan: entered promiscuous mode [ 112.731755][ T5368] veth1_vlan: entered promiscuous mode [ 112.789162][ T5368] veth0_macvtap: entered promiscuous mode [ 112.810239][ T5368] veth1_macvtap: entered promiscuous mode [ 112.851813][ T5368] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 112.873047][ T5368] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 112.894513][ T1051] netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 112.907864][ T1051] netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 112.923547][ T1051] netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 112.927424][ T1051] netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/02/03 12:21:43 executed programs: 0 [ 115.846856][ T46] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 115.853812][ T46] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 115.858750][ T46] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 115.867914][ T46] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 115.872307][ T46] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2 [ 116.275105][ T5431] chnl_net:caif_netlink_parms(): no params data found [ 116.378048][ T5431] bridge0: port 1(bridge_slave_0) entered blocking state [ 116.381525][ T5431] bridge0: port 1(bridge_slave_0) entered disabled state [ 116.384767][ T5431] bridge_slave_0: entered allmulticast mode [ 116.388687][ T5431] bridge_slave_0: entered promiscuous mode [ 116.394008][ T5431] bridge0: port 2(bridge_slave_1) entered blocking state [ 116.397240][ T5431] bridge0: port 2(bridge_slave_1) entered disabled state [ 116.401918][ T5431] bridge_slave_1: entered allmulticast mode [ 116.405674][ T5431] bridge_slave_1: entered promiscuous mode [ 116.445766][ T5431] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 116.463470][ T5431] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 116.488148][ T5431] team0: Port device team_slave_0 added [ 116.493162][ T5431] team0: Port device team_slave_1 added [ 116.514921][ T5431] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 116.517978][ T5431] 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. [ 116.529641][ T5431] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 116.536242][ T5431] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 116.539347][ T5431] 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. [ 116.551964][ T5431] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 116.588440][ T5431] hsr_slave_0: entered promiscuous mode [ 116.593049][ T5431] hsr_slave_1: entered promiscuous mode [ 116.596033][ T5431] debugfs: 'hsr0' already exists in 'hsr' [ 116.598628][ T5431] Cannot create hsr debugfs directory [ 116.739521][ T5431] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 116.758288][ T5431] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 116.765523][ T5431] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 116.773653][ T5431] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 116.804686][ T5431] bridge0: port 2(bridge_slave_1) entered blocking state [ 116.808028][ T5431] bridge0: port 2(bridge_slave_1) entered forwarding state [ 116.812179][ T5431] bridge0: port 1(bridge_slave_0) entered blocking state [ 116.815330][ T5431] bridge0: port 1(bridge_slave_0) entered forwarding state [ 116.875689][ T5431] 8021q: adding VLAN 0 to HW filter on device bond0 [ 116.888532][ T1051] bridge0: port 1(bridge_slave_0) entered disabled state [ 116.893542][ T1051] bridge0: port 2(bridge_slave_1) entered disabled state [ 116.910672][ T5431] 8021q: adding VLAN 0 to HW filter on device team0 [ 116.922854][ T1051] bridge0: port 1(bridge_slave_0) entered blocking state [ 116.926184][ T1051] bridge0: port 1(bridge_slave_0) entered forwarding state [ 116.936818][ T1051] bridge0: port 2(bridge_slave_1) entered blocking state [ 116.939987][ T1051] bridge0: port 2(bridge_slave_1) entered forwarding state [ 117.113661][ T5431] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 117.157222][ T5431] veth0_vlan: entered promiscuous mode [ 117.166202][ T5431] veth1_vlan: entered promiscuous mode [ 117.192435][ T5431] veth0_macvtap: entered promiscuous mode [ 117.198508][ T5431] veth1_macvtap: entered promiscuous mode [ 117.215425][ T5431] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 117.227768][ T5431] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 117.237045][ T1051] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 117.250722][ T1051] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 117.257604][ T1051] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 117.268996][ T1051] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 117.350536][ T1047] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 117.356305][ T1047] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 117.409019][ T1047] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 117.415066][ T1047] 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) [ 117.795046][ T5368] syz-executor (5368) used greatest stack depth: 15816 bytes left [ 117.945735][ T46] Bluetooth: hci1: command tx timeout [ 118.377673][ T1051] netdevsim netdevsim3 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 118.462971][ T1051] netdevsim netdevsim3 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 118.539951][ T1051] netdevsim netdevsim3 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 118.613053][ T1051] netdevsim netdevsim3 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 118.881856][ T1051] bridge_slave_1: left allmulticast mode [ 118.884521][ T1051] bridge_slave_1: left promiscuous mode [ 118.888365][ T1051] bridge0: port 2(bridge_slave_1) entered disabled state [ 118.913828][ T1051] bridge_slave_0: left allmulticast mode [ 118.916380][ T1051] bridge_slave_0: left promiscuous mode [ 118.919051][ T1051] bridge0: port 1(bridge_slave_0) entered disabled state [ 119.534103][ T1051] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 119.553092][ T1051] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 119.563007][ T1051] bond0 (unregistering): Released all slaves [ 119.722396][ T1051] hsr_slave_0: left promiscuous mode [ 119.769749][ T1051] hsr_slave_1: left promiscuous mode [ 119.778953][ T1051] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 119.794262][ T1051] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 119.823916][ T1051] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 119.827347][ T1051] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 119.893648][ T1051] veth1_macvtap: left promiscuous mode [ 119.896784][ T1051] veth0_macvtap: left promiscuous mode [ 119.899335][ T1051] veth1_vlan: left promiscuous mode [ 119.941408][ T1051] veth0_vlan: left promiscuous mode [ 120.457723][ T1051] team0 (unregistering): Port device team_slave_1 removed [ 120.484213][ T1051] team0 (unregistering): Port device team_slave_0 removed [ 121.023897][ T1051] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 121.095686][ T1051] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 121.146000][ T1051] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 121.204990][ T1051] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 121.364716][ T1051] bridge_slave_1: left allmulticast mode [ 121.367482][ T1051] bridge_slave_1: left promiscuous mode [ 121.370094][ T1051] bridge0: port 2(bridge_slave_1) entered disabled state [ 121.392395][ T1051] bridge_slave_0: left allmulticast mode [ 121.394923][ T1051] bridge_slave_0: left promiscuous mode [ 121.397469][ T1051] bridge0: port 1(bridge_slave_0) entered disabled state [ 121.664043][ T1051] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 121.669469][ T1051] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 121.674662][ T1051] bond0 (unregistering): Released all slaves [ 121.884447][ T1051] hsr_slave_0: left promiscuous mode [ 121.893075][ T1051] hsr_slave_1: left promiscuous mode [ 121.901834][ T1051] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 121.905129][ T1051] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 121.920912][ T1051] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 121.924479][ T1051] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 121.953796][ T1051] veth1_macvtap: left promiscuous mode [ 121.956359][ T1051] veth0_macvtap: left promiscuous mode [ 121.958886][ T1051] veth1_vlan: left promiscuous mode [ 121.974997][ T1051] veth0_vlan: left promiscuous mode [ 122.375638][ T1051] team0 (unregistering): Port device team_slave_1 removed [ 122.403207][ T1051] team0 (unregistering): Port device team_slave_0 removed syzkaller build log: go env (err=) 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-build3351903552=/tmp/go-build -gno-record-gcc-switches' GOHOSTARCH='amd64' GOHOSTOS='linux' GOINSECURE='' GOMOD='/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mod' GOMODCACHE='/syzkaller/jobs/linux/gopath/pkg/mod' GONOPROXY='' GONOSUMDB='' GOOS='linux' GOPATH='/syzkaller/jobs/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=) HEAD detached at d1b870e1003b 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=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" ./sys/syz-sysgen | grep -q false || go install -ldflags="-s -w -X github.com/google/syzkaller/prog.GitRevision=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" ./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=d1b870e1003b52891d2196c1e2ee42fe905010ba -X github.com/google/syzkaller/prog.gitRevisionDate=20251128-125159" -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=\"d1b870e1003b52891d2196c1e2ee42fe905010ba\" /usr/bin/ld: /tmp/ccLdD21Q.o: in function `Connection::Connect(char const*, char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x386): 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