Hello, syzbot tried to test the proposed patch but the build/boot failed:
c 0x1003 length: 249 > 9 [ 99.252780][ T4680] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 99.258304][ T4680] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 99.262003][ T4680] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 99.904250][ T947] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 99.908039][ T947] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 99.960090][ T1131] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 99.963625][ T1131] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 101.111055][ T5380] chnl_net:caif_netlink_parms(): no params data found [ 101.277872][ T5380] bridge0: port 1(bridge_slave_0) entered blocking state [ 101.286086][ T5380] bridge0: port 1(bridge_slave_0) entered disabled state [ 101.289331][ T5380] bridge_slave_0: entered allmulticast mode [ 101.304573][ T5380] bridge_slave_0: entered promiscuous mode [ 101.311175][ T5380] bridge0: port 2(bridge_slave_1) entered blocking state [ 101.314400][ T5380] bridge0: port 2(bridge_slave_1) entered disabled state [ 101.318351][ T5380] bridge_slave_1: entered allmulticast mode [ 101.322134][ T5380] bridge_slave_1: entered promiscuous mode [ 101.348427][ T5380] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 101.357433][ T5380] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 101.383478][ T5380] team0: Port device team_slave_0 added [ 101.388135][ T5380] team0: Port device team_slave_1 added [ 101.411977][ T5380] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 101.415073][ T5380] 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. [ 101.427067][ T5380] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 101.433759][ T5380] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 101.437187][ T5380] 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. [ 101.448054][ T5380] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 101.483243][ T5380] hsr_slave_0: entered promiscuous mode [ 101.486999][ T5380] hsr_slave_1: entered promiscuous mode [ 101.640469][ T5380] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 101.650511][ T5380] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 101.657246][ T5380] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 101.663682][ T5380] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 101.742774][ T5380] 8021q: adding VLAN 0 to HW filter on device bond0 [ 101.761501][ T5380] 8021q: adding VLAN 0 to HW filter on device team0 [ 101.770624][ T947] bridge0: port 1(bridge_slave_0) entered blocking state [ 101.773903][ T947] bridge0: port 1(bridge_slave_0) entered forwarding state [ 101.786737][ T1131] bridge0: port 2(bridge_slave_1) entered blocking state [ 101.789882][ T1131] bridge0: port 2(bridge_slave_1) entered forwarding state [ 102.002757][ T5380] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 102.041139][ T5380] veth0_vlan: entered promiscuous mode [ 102.050273][ T5380] veth1_vlan: entered promiscuous mode [ 102.080200][ T5380] veth0_macvtap: entered promiscuous mode [ 102.087176][ T5380] veth1_macvtap: entered promiscuous mode [ 102.108084][ T5380] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 102.119233][ T5380] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 102.129583][ T947] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.141577][ T947] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.145405][ T947] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.160213][ T4047] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 102.423332][ T3019] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 102.589933][ T3019] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 102.698091][ T3019] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 102.788477][ T3019] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 105.309210][ T3019] bridge_slave_1: left allmulticast mode [ 105.311909][ T3019] bridge_slave_1: left promiscuous mode [ 105.331282][ T3019] bridge0: port 2(bridge_slave_1) entered disabled state [ 105.387138][ T3019] bridge_slave_0: left allmulticast mode [ 105.389688][ T3019] bridge_slave_0: left promiscuous mode [ 105.392386][ T3019] bridge0: port 1(bridge_slave_0) entered disabled state [ 106.096537][ T3019] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 106.103033][ T3019] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 106.117388][ T3019] bond0 (unregistering): Released all slaves [ 106.229126][ T3019] hsr_slave_0: left promiscuous mode [ 106.246123][ T3019] hsr_slave_1: left promiscuous mode [ 106.258491][ T3019] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 106.261745][ T3019] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 106.286794][ T3019] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 106.290111][ T3019] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 106.325813][ T3019] veth1_macvtap: left promiscuous mode [ 106.329044][ T3019] veth0_macvtap: left promiscuous mode [ 106.331694][ T3019] veth1_vlan: left promiscuous mode [ 106.334122][ T3019] veth0_vlan: left promiscuous mode [ 106.797480][ T3019] team0 (unregistering): Port device team_slave_1 removed [ 106.821140][ T3019] team0 (unregistering): Port device team_slave_0 removed 2026/01/07 02:18:07 executed programs: 0 [ 108.259947][ T46] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 108.264618][ T46] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 108.270695][ T46] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 108.274422][ T46] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 108.278195][ T46] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 108.730010][ T5451] chnl_net:caif_netlink_parms(): no params data found [ 108.907477][ T5451] bridge0: port 1(bridge_slave_0) entered blocking state [ 108.910655][ T5451] bridge0: port 1(bridge_slave_0) entered disabled state [ 108.913831][ T5451] bridge_slave_0: entered allmulticast mode [ 108.929157][ T5451] bridge_slave_0: entered promiscuous mode [ 108.939210][ T5451] bridge0: port 2(bridge_slave_1) entered blocking state [ 108.942482][ T5451] bridge0: port 2(bridge_slave_1) entered disabled state [ 108.950846][ T5451] bridge_slave_1: entered allmulticast mode [ 108.965783][ T5451] bridge_slave_1: entered promiscuous mode [ 109.018144][ T5451] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 109.026049][ T5451] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 109.073929][ T5451] team0: Port device team_slave_0 added [ 109.085217][ T5451] team0: Port device team_slave_1 added [ 109.128253][ T5451] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 109.131303][ T5451] 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. [ 109.156217][ T5451] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 109.177176][ T5451] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 109.180214][ T5451] 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. [ 109.208335][ T5451] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 109.278165][ T5451] hsr_slave_0: entered promiscuous mode [ 109.286205][ T5451] hsr_slave_1: entered promiscuous mode [ 109.779620][ T5451] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 109.800234][ T5451] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 109.807679][ T5451] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 109.829275][ T5451] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 109.967755][ T5451] 8021q: adding VLAN 0 to HW filter on device bond0 [ 109.993637][ T5451] 8021q: adding VLAN 0 to HW filter on device team0 [ 110.013449][ T947] bridge0: port 1(bridge_slave_0) entered blocking state [ 110.016837][ T947] bridge0: port 1(bridge_slave_0) entered forwarding state [ 110.041939][ T947] bridge0: port 2(bridge_slave_1) entered blocking state [ 110.045001][ T947] bridge0: port 2(bridge_slave_1) entered forwarding state [ 110.113140][ T5451] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 110.126403][ T5451] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 110.306727][ T46] Bluetooth: hci0: command tx timeout [ 110.407891][ T5451] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 110.474914][ T5451] veth0_vlan: entered promiscuous mode [ 110.501129][ T5451] veth1_vlan: entered promiscuous mode [ 110.548766][ T5451] veth0_macvtap: entered promiscuous mode [ 110.566415][ T5451] veth1_macvtap: entered promiscuous mode [ 110.594368][ T5451] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 110.627391][ T5451] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 110.639617][ T947] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 110.643516][ T947] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 110.667089][ T947] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 110.702519][ T947] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 110.791338][ T947] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 110.795044][ T947] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 110.848266][ T947] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 110.851713][ T947] 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) [ 112.188996][ T1131] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 113.352275][ T1131] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 113.627013][ T1131] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 113.684954][ T1131] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 113.807220][ T1131] bridge_slave_1: left allmulticast mode [ 113.809850][ T1131] bridge_slave_1: left promiscuous mode [ 113.812539][ T1131] bridge0: port 2(bridge_slave_1) entered disabled state [ 113.832063][ T1131] bridge_slave_0: left allmulticast mode [ 113.834590][ T1131] bridge_slave_0: left promiscuous mode [ 113.837572][ T1131] bridge0: port 1(bridge_slave_0) entered disabled state [ 114.221189][ T1131] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 114.227289][ T1131] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 114.232468][ T1131] bond0 (unregistering): Released all slaves [ 114.487951][ T1131] hsr_slave_0: left promiscuous mode [ 114.490767][ T1131] hsr_slave_1: left promiscuous mode [ 114.498999][ T1131] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 114.502267][ T1131] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 114.517714][ T1131] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 114.521062][ T1131] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 114.549206][ T1131] veth1_macvtap: left promiscuous mode [ 114.551802][ T1131] veth0_macvtap: left promiscuous mode [ 114.554336][ T1131] veth1_vlan: left promiscuous mode [ 114.567501][ T1131] veth0_vlan: left promiscuous mode [ 114.940636][ T1131] team0 (unregistering): Port device team_slave_1 removed [ 114.967019][ T1131] team0 (unregistering): Port device team_slave_0 removed syzkaller build log: go env (err=<nil>) 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-build1445029477=/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=<nil>) 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/cc4kC0pD.o: in function `Connection::Connect(char const*, char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEPKcS1_]+0x104): 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 Error text is too large and was truncated, full error text is at: https://syzkaller.appspot.com/x/error.txt?x=12df7e9a580000 Tested on: commit: af98ee9d f2fs: fix use-after-free in f2fs_write_end_io git tree: https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git bugfix/syzbot kernel config: https://syzkaller.appspot.com/x/.config?x=513255d80ab78f2b dashboard link: https://syzkaller.appspot.com/bug?extid=b4444e3c972a7a124187 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 Note: no patches were applied. _______________________________________________ Linux-f2fs-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
