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 '10.128.1.187' (ED25519) to the list of known hosts. 2026/04/10 14:53:24 parsed 1 programs [ 56.604391][ T30] audit: type=1400 audit(1775832804.585:62): avc: denied { node_bind } for pid=5799 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 58.623641][ T30] audit: type=1400 audit(1775832806.605:63): avc: denied { mounton } for pid=5807 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2023 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 58.647029][ T30] audit: type=1400 audit(1775832806.625:64): avc: denied { mount } for pid=5807 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 58.649344][ T5807] cgroup: Unknown subsys name 'net' [ 58.676070][ T30] audit: type=1400 audit(1775832806.655:65): avc: denied { unmount } for pid=5807 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 58.783692][ T5807] cgroup: Unknown subsys name 'cpuset' [ 58.791984][ T5807] cgroup: Unknown subsys name 'rlimit' [ 58.903420][ T30] audit: type=1400 audit(1775832806.885:66): avc: denied { setattr } for pid=5807 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=820 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 58.936451][ T30] audit: type=1400 audit(1775832806.885:67): avc: denied { create } for pid=5807 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 58.963545][ T30] audit: type=1400 audit(1775832806.885:68): avc: denied { write } for pid=5807 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 Setting up swapspace version 1, size = 127995904 bytes [ 58.984426][ T30] audit: type=1400 audit(1775832806.885:69): avc: denied { read } for pid=5807 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 58.995715][ T5809] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 59.005713][ T30] audit: type=1400 audit(1775832806.895:70): avc: denied { mounton } for pid=5807 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 59.039272][ T30] audit: type=1400 audit(1775832806.895:71): avc: denied { mount } for pid=5807 comm="syz-executor" name="/" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=filesystem permissive=1 [ 59.946741][ T5807] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 61.657262][ T30] kauditd_printk_skb: 4 callbacks suppressed [ 61.657277][ T30] audit: type=1400 audit(1775832809.635:76): avc: denied { execmem } for pid=5814 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 61.733796][ T30] audit: type=1400 audit(1775832809.665:77): avc: denied { create } for pid=5815 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=user_namespace permissive=1 [ 61.773431][ T30] audit: type=1400 audit(1775832809.665:78): avc: denied { sys_admin } for pid=5815 comm="syz-executor" capability=21 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=cap_userns permissive=1 [ 61.821159][ T30] audit: type=1400 audit(1775832809.665:79): avc: denied { read } for pid=5818 comm="syz-executor" dev="nsfs" ino=4026531833 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:nsfs_t tclass=file permissive=1 [ 61.843673][ T5129] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 61.851672][ T5129] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 61.859179][ T5129] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 61.867111][ T5129] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 61.874953][ T5129] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 61.937012][ T30] audit: type=1400 audit(1775832809.665:80): avc: denied { open } for pid=5818 comm="syz-executor" path="net:[4026531833]" dev="nsfs" ino=4026531833 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:nsfs_t tclass=file permissive=1 [ 61.960599][ T30] audit: type=1400 audit(1775832809.665:81): avc: denied { mounton } for pid=5818 comm="syz-executor" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1 [ 61.984893][ T30] audit: type=1400 audit(1775832809.715:82): avc: denied { create } for pid=5820 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bluetooth_socket permissive=1 [ 62.004942][ T30] audit: type=1400 audit(1775832809.715:83): avc: denied { read write } for pid=5820 comm="syz-executor" name="vhci" dev="devtmpfs" ino=1268 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:vhost_device_t tclass=chr_file permissive=1 [ 62.028526][ T30] audit: type=1400 audit(1775832809.715:84): avc: denied { open } for pid=5820 comm="syz-executor" path="/dev/vhci" dev="devtmpfs" ino=1268 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:vhost_device_t tclass=chr_file permissive=1 [ 62.052069][ T30] audit: type=1400 audit(1775832809.795:85): avc: denied { ioctl } for pid=5820 comm="syz-executor" path="socket:[4915]" dev="sockfs" ino=4915 ioctlcmd=0x48c9 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bluetooth_socket permissive=1 [ 62.092415][ T5819] 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. [ 62.860938][ T49] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 62.882163][ T49] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.038058][ T49] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.053892][ T49] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.815767][ T5863] chnl_net:caif_netlink_parms(): no params data found [ 64.108552][ T5863] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.126220][ T5863] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.135431][ T5863] bridge_slave_0: entered allmulticast mode [ 64.142992][ T5863] bridge_slave_0: entered promiscuous mode [ 64.153078][ T5863] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.160141][ T5863] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.167980][ T5863] bridge_slave_1: entered allmulticast mode [ 64.174752][ T5863] bridge_slave_1: entered promiscuous mode [ 64.195514][ T5863] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.206373][ T5863] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.229045][ T5863] team0: Port device team_slave_0 added [ 64.236559][ T5863] team0: Port device team_slave_1 added [ 64.255323][ T5863] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 64.262702][ T5863] 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. [ 64.288580][ T5863] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 64.300462][ T5863] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 64.307497][ T5863] 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. [ 64.333392][ T5863] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 64.365246][ T5863] hsr_slave_0: entered promiscuous mode [ 64.371915][ T5863] hsr_slave_1: entered promiscuous mode [ 64.460939][ T5863] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 64.473871][ T5863] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 64.483404][ T5863] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 64.496146][ T5863] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 64.522655][ T5863] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.529751][ T5863] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.537351][ T5863] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.544423][ T5863] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.640629][ T5863] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.661477][ T49] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.672783][ T49] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.698828][ T5863] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.724157][ T49] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.731287][ T49] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.742194][ T49] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.749261][ T49] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.889580][ T5863] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.935079][ T5863] veth0_vlan: entered promiscuous mode [ 64.947430][ T5863] veth1_vlan: entered promiscuous mode [ 64.965833][ T5863] veth0_macvtap: entered promiscuous mode [ 64.973700][ T5863] veth1_macvtap: entered promiscuous mode [ 64.987516][ T5863] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 65.000516][ T5863] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 65.016472][ T36] netdevsim netdevsim3 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.026657][ T36] netdevsim netdevsim3 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 2026/04/10 14:53:33 executed programs: 0 [ 65.036379][ T36] netdevsim netdevsim3 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.046167][ T36] netdevsim netdevsim3 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 65.163712][ T5822] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 65.172086][ T5822] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 65.179389][ T5822] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 65.187933][ T5822] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 65.200278][ T5822] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 65.312271][ T5918] chnl_net:caif_netlink_parms(): no params data found [ 65.363123][ T5918] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.370481][ T5918] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.377754][ T5918] bridge_slave_0: entered allmulticast mode [ 65.384611][ T5918] bridge_slave_0: entered promiscuous mode [ 65.391929][ T5918] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.398999][ T5918] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.406908][ T5918] bridge_slave_1: entered allmulticast mode [ 65.413646][ T5918] bridge_slave_1: entered promiscuous mode [ 65.434339][ T5918] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.445622][ T5918] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.467595][ T5918] team0: Port device team_slave_0 added [ 65.474695][ T5918] team0: Port device team_slave_1 added [ 65.492787][ T5918] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 65.499719][ T5918] 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. [ 65.525901][ T5918] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 65.538082][ T5918] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 65.545195][ T5918] 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. [ 65.571620][ T5918] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 65.605544][ T5918] hsr_slave_0: entered promiscuous mode [ 65.611647][ T5918] hsr_slave_1: entered promiscuous mode [ 65.617447][ T5918] debugfs: 'hsr0' already exists in 'hsr' [ 65.623481][ T5918] Cannot create hsr debugfs directory [ 65.711438][ T5918] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 65.720173][ T5918] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.728937][ T5918] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.738050][ T5918] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.747621][ T1295] ieee802154 phy0 wpan0: encryption failed: -22 [ 65.754423][ T1295] ieee802154 phy1 wpan1: encryption failed: -22 [ 65.773200][ T5918] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.780254][ T5918] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.787610][ T5918] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.794655][ T5918] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.836271][ T5918] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.850348][ T13] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.858346][ T13] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.869132][ T5918] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.879288][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.886350][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.898166][ T13] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.905256][ T13] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.018237][ T5918] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.046667][ T5918] veth0_vlan: entered promiscuous mode [ 66.055478][ T5918] veth1_vlan: entered promiscuous mode [ 66.077364][ T5918] veth0_macvtap: entered promiscuous mode [ 66.085480][ T5918] veth1_macvtap: entered promiscuous mode [ 66.097240][ T5918] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 66.109887][ T5918] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 66.122210][ T12] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.130932][ T12] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.145976][ T12] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.155959][ T13] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 66.197554][ T49] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.208918][ T49] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 66.233804][ T160] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 66.242273][ T160] 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=) 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-build1826263862=/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=) HEAD detached at d6526ea3e6a 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/ccBu9rgn.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