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 '10.128.10.28' (ED25519) to the list of known hosts. 2026/07/17 13:34:11 parsed 1 programs [ 72.324910][ T29] audit: type=1400 audit(1784295251.644:129): avc: denied { node_bind } for pid=5610 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 74.618500][ T29] audit: type=1400 audit(1784295253.944:130): avc: denied { mounton } for pid=5619 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 74.642371][ T29] audit: type=1400 audit(1784295253.964:131): avc: denied { mount } for pid=5619 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 [ 74.646080][ T5619] cgroup: Unknown subsys name 'net' [ 74.672193][ T29] audit: type=1400 audit(1784295253.994:132): avc: denied { unmount } for pid=5619 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 74.839893][ T5619] cgroup: Unknown subsys name 'cpuset' [ 74.848241][ T5619] cgroup: Unknown subsys name 'rlimit' [ 74.991605][ T29] audit: type=1400 audit(1784295254.314:133): avc: denied { setattr } for pid=5619 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=821 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 75.015026][ T29] audit: type=1400 audit(1784295254.314:134): avc: denied { create } for pid=5619 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 75.037196][ T29] audit: type=1400 audit(1784295254.314:135): avc: denied { write } for pid=5619 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 75.066942][ T29] audit: type=1400 audit(1784295254.314:136): avc: denied { read } for pid=5619 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 75.089426][ T29] audit: type=1400 audit(1784295254.334:137): avc: denied { mounton } for pid=5619 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 [ 75.114720][ T29] audit: type=1400 audit(1784295254.334:138): avc: denied { mount } for pid=5619 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 Setting up swapspace version 1, size = 127995904 bytes [ 75.145579][ T5621] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 76.127559][ T5619] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 78.228648][ T29] kauditd_printk_skb: 4 callbacks suppressed [ 78.228666][ T29] audit: type=1400 audit(1784295257.544:143): avc: denied { execmem } for pid=5630 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 78.357834][ T29] audit: type=1400 audit(1784295257.594:144): avc: denied { read } for pid=5636 comm="syz-executor" dev="nsfs" ino=4026531833 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:nsfs_t tclass=file permissive=1 [ 78.416282][ T29] audit: type=1400 audit(1784295257.594:145): avc: denied { open } for pid=5636 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 [ 78.448294][ T29] audit: type=1400 audit(1784295257.594:146): avc: denied { mounton } for pid=5636 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 [ 78.481137][ T29] audit: type=1400 audit(1784295257.634:147): avc: denied { module_request } for pid=5637 comm="syz-executor" kmod="netdev-nr4" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1 [ 78.528538][ T29] audit: type=1400 audit(1784295257.684:148): avc: denied { sys_module } for pid=5637 comm="syz-executor" capability=16 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=capability permissive=1 [ 78.654065][ T29] audit: type=1400 audit(1784295257.974:149): avc: denied { mounton } for pid=5636 comm="syz-executor" path="/root/syzkaller.N726xZ/syz-tmp" dev="sda1" ino=2043 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 78.679085][ T29] audit: type=1400 audit(1784295257.974:150): avc: denied { mount } for pid=5636 comm="syz-executor" name="/" dev="tmpfs" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:tmpfs_t tclass=filesystem permissive=1 [ 78.701531][ T29] audit: type=1400 audit(1784295257.974:151): avc: denied { mounton } for pid=5636 comm="syz-executor" path="/root/syzkaller.N726xZ/syz-tmp/newroot/dev" dev="tmpfs" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_tmpfs_t tclass=dir permissive=1 [ 78.727136][ T29] audit: type=1400 audit(1784295258.014:152): avc: denied { mount } for pid=5636 comm="syz-executor" name="/" dev="proc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:proc_t tclass=filesystem permissive=1 [ 78.894536][ T5635] 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. [ 79.834051][ T5681] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 79.845780][ T5681] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 79.853955][ T5681] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 79.866888][ T5681] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 79.874705][ T5681] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 80.362823][ T5637] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.384115][ T5637] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.392932][ T5637] bridge_slave_0: entered allmulticast mode [ 80.401987][ T5637] bridge_slave_0: entered promiscuous mode [ 80.514575][ T5637] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.521837][ T5637] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.530162][ T5637] bridge_slave_1: entered allmulticast mode [ 80.545458][ T5637] bridge_slave_1: entered promiscuous mode [ 80.661779][ T5637] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.700965][ T5637] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.878009][ T5637] team0: Port device team_slave_0 added [ 80.909526][ T5637] team0: Port device team_slave_1 added [ 81.177901][ T5637] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 81.195302][ T5637] 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. [ 81.221735][ T5637] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 81.280570][ T5637] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 81.287585][ T5637] 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. [ 81.314605][ T5637] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 81.475349][ T5637] hsr_slave_0: entered promiscuous mode [ 81.483183][ T5637] hsr_slave_1: entered promiscuous mode [ 81.823478][ T57] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.833129][ T57] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 81.935846][ T35] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 81.952717][ T35] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 82.144845][ T5637] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 82.158913][ T5637] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 82.167428][ T5637] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 82.177297][ T5637] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 82.185027][ T5637] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 82.198394][ T5637] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 82.206199][ T5637] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 82.215391][ T5637] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 82.276196][ T5637] 8021q: adding VLAN 0 to HW filter on device bond0 [ 82.297739][ T5637] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.309983][ T1177] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.317365][ T1177] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.333266][ T1177] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.340384][ T1177] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.592946][ T5637] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.740047][ T5637] veth0_vlan: entered promiscuous mode [ 82.752843][ T5637] veth1_vlan: entered promiscuous mode [ 82.778796][ T5637] veth0_macvtap: entered promiscuous mode [ 82.788195][ T5637] veth1_macvtap: entered promiscuous mode [ 82.805001][ T5637] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.818144][ T5637] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.833817][ T1177] netdevsim netdevsim4 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.845421][ T1177] netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.854578][ T1177] netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.869181][ T1177] netdevsim netdevsim4 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/07/17 13:34:22 executed programs: 0 [ 83.007498][ T5681] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 83.018508][ T5681] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 83.029636][ T5681] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 83.037956][ T5681] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 83.045441][ T5681] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 83.428564][ T5751] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.435722][ T5751] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.443120][ T5751] bridge_slave_0: entered allmulticast mode [ 83.450085][ T5751] bridge_slave_0: entered promiscuous mode [ 83.458934][ T5751] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.466073][ T5751] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.473419][ T5751] bridge_slave_1: entered allmulticast mode [ 83.480514][ T5751] bridge_slave_1: entered promiscuous mode [ 83.507552][ T5751] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.519660][ T5751] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 83.552587][ T5751] team0: Port device team_slave_0 added [ 83.560781][ T5751] team0: Port device team_slave_1 added [ 83.588160][ T5751] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 83.595325][ T5751] 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. [ 83.621754][ T5751] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 83.635911][ T5751] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 83.643001][ T5751] 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. [ 83.669065][ T5751] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 83.714645][ T5751] hsr_slave_0: entered promiscuous mode [ 83.720868][ T5751] hsr_slave_1: entered promiscuous mode [ 83.727530][ T5751] debugfs: 'hsr0' already exists in 'hsr' [ 83.733342][ T5751] Cannot create hsr debugfs directory [ 83.850745][ T5751] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 83.862334][ T5751] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 83.870162][ T5751] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 83.880433][ T5751] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 83.888938][ T5751] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 83.899263][ T5751] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 83.907521][ T5751] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 83.917042][ T5751] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 83.991901][ T5751] 8021q: adding VLAN 0 to HW filter on device bond0 [ 84.011931][ T5751] 8021q: adding VLAN 0 to HW filter on device team0 [ 84.025318][ T35] bridge0: port 1(bridge_slave_0) entered blocking state [ 84.032497][ T35] bridge0: port 1(bridge_slave_0) entered forwarding state [ 84.048357][ T1177] bridge0: port 2(bridge_slave_1) entered blocking state [ 84.055452][ T1177] bridge0: port 2(bridge_slave_1) entered forwarding state [ 84.321467][ T5751] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.363812][ T5751] veth0_vlan: entered promiscuous mode [ 84.375590][ T5751] veth1_vlan: entered promiscuous mode [ 84.400458][ T5751] veth0_macvtap: entered promiscuous mode [ 84.410068][ T5751] veth1_macvtap: entered promiscuous mode [ 84.427813][ T5751] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 84.443837][ T5751] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 84.457788][ T48] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.467648][ T48] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.477799][ T48] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.486930][ T48] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 84.549856][ T35] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.562403][ T35] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 84.587678][ T57] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 84.598591][ T57] 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) [ 84.861886][ T57] netdevsim netdevsim4 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 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-build685810155=/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 d6526ea3e6 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/ccy2HJQX.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