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 '10.128.1.114' (ED25519) to the list of known hosts. 2026/06/20 08:59:21 parsed 1 programs [ 49.750371][ T29] audit: type=1400 audit(1781945961.347:129): avc: denied { node_bind } for pid=5609 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 51.824706][ T29] audit: type=1400 audit(1781945963.417:130): avc: denied { mounton } for pid=5616 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 [ 51.847879][ T29] audit: type=1400 audit(1781945963.447:131): avc: denied { mount } for pid=5616 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 [ 51.849250][ T5616] cgroup: Unknown subsys name 'net' [ 51.876655][ T29] audit: type=1400 audit(1781945963.477:132): avc: denied { unmount } for pid=5616 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 52.018272][ T5616] cgroup: Unknown subsys name 'cpuset' [ 52.025289][ T5616] cgroup: Unknown subsys name 'rlimit' [ 52.148793][ T29] audit: type=1400 audit(1781945963.747:133): avc: denied { setattr } for pid=5616 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 [ 52.179169][ T29] audit: type=1400 audit(1781945963.747:134): avc: denied { create } for pid=5616 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 52.205523][ T29] audit: type=1400 audit(1781945963.747:135): avc: denied { write } for pid=5616 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 52.216928][ T5619] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 52.226669][ T29] audit: type=1400 audit(1781945963.747:136): avc: denied { read } for pid=5616 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 52.255059][ T29] audit: type=1400 audit(1781945963.747:137): avc: denied { mounton } for pid=5616 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 Setting up swapspace version 1, size = 127995904 bytes [ 52.280106][ T29] audit: type=1400 audit(1781945963.747:138): avc: denied { mount } for pid=5616 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 [ 53.025552][ T5616] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 54.739485][ T5628] 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. [ 54.760178][ T29] kauditd_printk_skb: 22 callbacks suppressed [ 54.760192][ T29] audit: type=1401 audit(1781945966.357:161): op=setxattr invalid_context="u:object_r:app_data_file:s0:c512,c768" [ 54.800617][ T29] audit: type=1400 audit(1781945966.397:162): avc: denied { read write } for pid=5628 comm="syz-executor" name="loop0" dev="devtmpfs" ino=647 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 54.825243][ T29] audit: type=1400 audit(1781945966.397:163): avc: denied { open } for pid=5628 comm="syz-executor" path="/dev/loop0" dev="devtmpfs" ino=647 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 54.849449][ T29] audit: type=1400 audit(1781945966.397:164): avc: denied { ioctl } for pid=5628 comm="syz-executor" path="/dev/loop0" dev="devtmpfs" ino=647 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 54.882057][ T29] audit: type=1400 audit(1781945966.457:165): avc: denied { sys_chroot } for pid=5630 comm="syz-executor" capability=18 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=cap_userns permissive=1 [ 54.918872][ T29] audit: type=1400 audit(1781945966.517:166): avc: denied { create } for pid=5642 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bluetooth_socket permissive=1 [ 54.939311][ T57] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 54.942631][ T29] audit: type=1400 audit(1781945966.537:167): avc: denied { read write } for pid=5642 comm="syz-executor" name="vhci" dev="devtmpfs" ino=1269 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:vhost_device_t tclass=chr_file permissive=1 [ 54.947599][ T57] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 54.971740][ T29] audit: type=1400 audit(1781945966.537:168): avc: denied { open } for pid=5642 comm="syz-executor" path="/dev/vhci" dev="devtmpfs" ino=1269 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:vhost_device_t tclass=chr_file permissive=1 [ 55.005893][ T29] audit: type=1400 audit(1781945966.537:169): avc: denied { ioctl } for pid=5642 comm="syz-executor" path="socket:[4758]" dev="sockfs" ino=4758 ioctlcmd=0x48c9 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=bluetooth_socket permissive=1 [ 55.032723][ T5644] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 55.040398][ T5644] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 55.050358][ T5646] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 55.057965][ T5646] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 55.066846][ T5646] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 55.149445][ T57] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 55.173582][ T57] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 55.690491][ T29] audit: type=1400 audit(1781945967.287:170): avc: denied { module_request } for pid=5674 comm="syz-executor" kmod="netdev-nr4" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1 [ 56.440288][ T5674] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.454114][ T5674] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.461348][ T5674] bridge_slave_0: entered allmulticast mode [ 56.468088][ T5674] bridge_slave_0: entered promiscuous mode [ 56.475640][ T5674] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.482851][ T5674] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.490027][ T5674] bridge_slave_1: entered allmulticast mode [ 56.498000][ T5674] bridge_slave_1: entered promiscuous mode [ 56.530266][ T5674] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.541263][ T5674] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.564889][ T5674] team0: Port device team_slave_0 added [ 56.573063][ T5674] team0: Port device team_slave_1 added [ 56.593262][ T5674] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 56.600403][ T5674] 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. [ 56.626309][ T5674] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 56.637962][ T5674] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 56.644943][ T5674] 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. [ 56.671099][ T5674] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 56.704460][ T5674] hsr_slave_0: entered promiscuous mode [ 56.710713][ T5674] hsr_slave_1: entered promiscuous mode [ 56.766899][ T5674] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 56.775261][ T5674] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 56.782983][ T5674] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 56.791081][ T5674] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 56.798653][ T5674] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 56.806824][ T5674] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 56.814400][ T5674] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 56.822334][ T5674] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 56.838336][ T5674] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.845432][ T5674] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.852852][ T5674] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.859936][ T5674] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.885638][ T5674] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.899239][ T35] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.906719][ T35] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.916789][ T5674] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.927103][ T432] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.934326][ T432] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.944510][ T35] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.951614][ T35] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.112925][ T5674] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.208543][ T5674] veth0_vlan: entered promiscuous mode [ 57.216904][ T5674] veth1_vlan: entered promiscuous mode [ 57.233867][ T5674] veth0_macvtap: entered promiscuous mode [ 57.242523][ T5674] veth1_macvtap: entered promiscuous mode [ 57.253797][ T5674] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 57.264981][ T5674] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 57.276015][ T57] netdevsim netdevsim4 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.285234][ T57] netdevsim netdevsim4 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.294388][ T57] netdevsim netdevsim4 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 57.303916][ T57] netdevsim netdevsim4 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/06/20 08:59:28 executed programs: 0 [ 57.383118][ T4926] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 57.391249][ T4926] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 57.398699][ T4926] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 57.406510][ T4926] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 57.413991][ T4926] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 57.619621][ T5742] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.627071][ T5742] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.634221][ T5742] bridge_slave_0: entered allmulticast mode [ 57.641131][ T5742] bridge_slave_0: entered promiscuous mode [ 57.648644][ T5742] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.655751][ T5742] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.663534][ T5742] bridge_slave_1: entered allmulticast mode [ 57.670654][ T5742] bridge_slave_1: entered promiscuous mode [ 57.688616][ T5742] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.698992][ T5742] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.717171][ T5742] team0: Port device team_slave_0 added [ 57.723758][ T5742] team0: Port device team_slave_1 added [ 57.738506][ T5742] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 57.745485][ T5742] 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. [ 57.772431][ T5742] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 57.784914][ T5742] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 57.792056][ T5742] 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. [ 57.817969][ T5742] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 57.842431][ T5742] hsr_slave_0: entered promiscuous mode [ 57.848886][ T5742] hsr_slave_1: entered promiscuous mode [ 57.854747][ T5742] debugfs: 'hsr0' already exists in 'hsr' [ 57.860583][ T5742] Cannot create hsr debugfs directory [ 57.917334][ T5742] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.925906][ T5742] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 57.933846][ T5742] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.942280][ T5742] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 57.950146][ T5742] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.958443][ T5742] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 57.966041][ T5742] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.974402][ T5742] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 57.990261][ T5742] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.997367][ T5742] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.004624][ T5742] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.011750][ T5742] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.039570][ T5742] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.051684][ T48] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.059426][ T48] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.071056][ T5742] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.082626][ T432] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.089908][ T432] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.100489][ T57] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.107598][ T57] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.271598][ T5742] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.296826][ T5742] veth0_vlan: entered promiscuous mode [ 58.305816][ T5742] veth1_vlan: entered promiscuous mode [ 58.324076][ T5742] veth0_macvtap: entered promiscuous mode [ 58.332578][ T5742] veth1_macvtap: entered promiscuous mode [ 58.344681][ T5742] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 58.355642][ T5742] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 58.367623][ T48] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.376897][ T48] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.387947][ T48] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.397632][ T48] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 58.427975][ T432] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.436070][ T432] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 58.452228][ T35] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 58.460222][ T35] 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-build512977016=/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 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/cc0ZeQuq.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