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 '10.128.1.18' (ED25519) to the list of known hosts. 2026/09/29 06:05:45 parsed 1 programs [ 64.595092][ T31] audit: type=1400 audit(1790661945.983:129): avc: denied { node_bind } for pid=5608 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 66.866446][ T31] audit: type=1400 audit(1790661948.253:130): 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 [ 66.890785][ T31] audit: type=1400 audit(1790661948.293:131): 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 [ 66.893545][ T5616] cgroup: Unknown subsys name 'net' [ 66.894958][ T31] audit: type=1400 audit(1790661948.293:132): 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 [ 67.049599][ T5616] cgroup: Unknown subsys name 'cpuset' [ 67.052055][ T5616] cgroup: Unknown subsys name 'rlimit' [ 67.183037][ T31] audit: type=1400 audit(1790661948.573:133): avc: denied { setattr } for pid=5616 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=814 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 67.183498][ T31] audit: type=1400 audit(1790661948.573:134): 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 [ 67.183750][ T31] audit: type=1400 audit(1790661948.573:135): 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 [ 67.184005][ T31] audit: type=1400 audit(1790661948.573:136): 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 [ 67.232344][ T31] audit: type=1400 audit(1790661948.583:137): 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 [ 67.232391][ T31] audit: type=1400 audit(1790661948.583:138): 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 Setting up swapspace version 1, size = 127995904 bytes [ 67.328269][ T5619] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 68.308700][ T5616] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 70.312653][ T31] kauditd_printk_skb: 4 callbacks suppressed [ 70.312671][ T31] audit: type=1400 audit(1790661951.703:143): avc: denied { execmem } for pid=5623 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 70.390359][ T31] audit: type=1400 audit(1790661951.783:144): avc: denied { mounton } for pid=5625 comm="syz-executor" path="/sys/fs/fuse/connections" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1 [ 70.390411][ T31] audit: type=1400 audit(1790661951.783:145): avc: denied { mount } for pid=5625 comm="syz-executor" name="/" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 70.391443][ T31] audit: type=1400 audit(1790661951.783:146): avc: denied { read } for pid=5625 comm="syz-executor" dev="nsfs" ino=4026531833 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:nsfs_t tclass=file permissive=1 [ 70.426079][ T31] audit: type=1400 audit(1790661951.793:148): avc: denied { mounton } for pid=5629 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 [ 70.456776][ T31] audit: type=1400 audit(1790661951.783:147): avc: denied { open } for pid=5625 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 [ 70.669400][ T31] audit: type=1400 audit(1790661952.063:149): avc: denied { mounton } for pid=5629 comm="syz-executor" path="/root/syzkaller.YJltjy/syz-tmp" dev="sda1" ino=2043 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 70.670540][ T31] audit: type=1400 audit(1790661952.063:150): avc: denied { mount } for pid=5629 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 [ 70.672597][ T31] audit: type=1400 audit(1790661952.063:151): avc: denied { mounton } for pid=5629 comm="syz-executor" path="/root/syzkaller.YJltjy/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 [ 70.674731][ T31] audit: type=1400 audit(1790661952.063:152): avc: denied { mount } for pid=5629 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 [ 70.787126][ T5629] 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. [ 71.508806][ T5657] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 71.510963][ T5657] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 71.513218][ T5657] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 71.514433][ T5657] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 71.539461][ T5657] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 73.495486][ T1159] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.495515][ T1159] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.650547][ T3366] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 73.650569][ T3366] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 73.790039][ T5671] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.790093][ T5671] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.790180][ T5671] bridge_slave_0: entered allmulticast mode [ 73.792946][ T5671] bridge_slave_0: entered promiscuous mode [ 73.804568][ T5671] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.804650][ T5671] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.804754][ T5671] bridge_slave_1: entered allmulticast mode [ 73.808250][ T5671] bridge_slave_1: entered promiscuous mode [ 73.871412][ T5671] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.886300][ T5671] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.953556][ T5671] team0: Port device team_slave_0 added [ 73.956052][ T5671] team0: Port device team_slave_1 added [ 74.025195][ T5671] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.025212][ T5671] 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. [ 74.025225][ T5671] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.033370][ T5671] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.033385][ T5671] 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. [ 74.033406][ T5671] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.132389][ T5671] hsr_slave_0: entered promiscuous mode [ 74.132986][ T5671] hsr_slave_1: entered promiscuous mode [ 74.249583][ T5671] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 74.254499][ T5671] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 74.255743][ T5671] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 74.260393][ T5671] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 74.261073][ T5671] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 74.284496][ T5671] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 74.286247][ T5671] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 74.295612][ T5671] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 74.329084][ T5671] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.329177][ T5671] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.329671][ T5671] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.329767][ T5671] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.390183][ T5671] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.396150][ T3366] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.404603][ T3366] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.426872][ T5671] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.432570][ T3366] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.432626][ T3366] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.437846][ T41] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.438153][ T41] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.722399][ T5671] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.761373][ T5671] veth0_vlan: entered promiscuous mode [ 74.767009][ T5671] veth1_vlan: entered promiscuous mode [ 74.793694][ T5671] veth0_macvtap: entered promiscuous mode [ 74.796251][ T5671] veth1_macvtap: entered promiscuous mode [ 74.817536][ T5671] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.824343][ T5671] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.844868][ T41] netdevsim netdevsim2 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.844929][ T41] netdevsim netdevsim2 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.844971][ T41] netdevsim netdevsim2 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.845000][ T41] netdevsim netdevsim2 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 2026/09/29 06:05:56 executed programs: 0 [ 75.010223][ T5657] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 75.015640][ T5657] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 75.019074][ T5657] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 75.033118][ T5657] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 75.038619][ T5657] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 75.427066][ T5742] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.427146][ T5742] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.427250][ T5742] bridge_slave_0: entered allmulticast mode [ 75.428094][ T5742] bridge_slave_0: entered promiscuous mode [ 75.459383][ T5742] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.459469][ T5742] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.459587][ T5742] bridge_slave_1: entered allmulticast mode [ 75.460937][ T5742] bridge_slave_1: entered promiscuous mode [ 75.501569][ T5742] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.503493][ T5742] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.542580][ T5742] team0: Port device team_slave_0 added [ 75.544693][ T5742] team0: Port device team_slave_1 added [ 75.576381][ T5742] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 75.576405][ 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. [ 75.576419][ T5742] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 75.612038][ T5742] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 75.612053][ 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. [ 75.612070][ T5742] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 75.685705][ T5742] hsr_slave_0: entered promiscuous mode [ 75.686217][ T5742] hsr_slave_1: entered promiscuous mode [ 75.696836][ T5742] debugfs: 'hsr0' already exists in 'hsr' [ 75.696956][ T5742] Cannot create hsr debugfs directory [ 75.833311][ T5742] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.836815][ T5742] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 75.847125][ T5742] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.854425][ T5742] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 75.859397][ T5742] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.868291][ T5742] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 75.869420][ T5742] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.874116][ T5742] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 75.938343][ T5742] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.955362][ T5742] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.969137][ T50] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.969199][ T50] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.975807][ T1159] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.975874][ T1159] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.999202][ T5742] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.999225][ T5742] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 76.256092][ T5742] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 76.311666][ T5742] veth0_vlan: entered promiscuous mode [ 76.323696][ T5742] veth1_vlan: entered promiscuous mode [ 76.368933][ T5742] veth0_macvtap: entered promiscuous mode [ 76.373294][ T5742] veth1_macvtap: entered promiscuous mode [ 76.406132][ T5742] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 76.422293][ T5742] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 76.487392][ T50] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.487677][ T50] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.487942][ T50] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.488230][ T50] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 76.547359][ T1159] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.547378][ T1159] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 76.591860][ T50] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 76.591882][ T50] 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) [ 77.095000][ T50] netdevsim netdevsim2 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-build1557218738=/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/ccQmUeke.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