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charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot tried to test the proposed patch but the build/boot failed: 67.405772][ T138] bridge0: port 1(bridge_slave_0) entered forwarding stat= e [ 67.422310][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes= ready [ 67.428814][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link= becomes ready [ 67.436709][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link = becomes ready [ 67.444616][ T138] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 67.450434][ T138] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 67.457539][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link b= ecomes ready [ 67.464951][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link b= ecomes ready [ 67.472504][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link b= ecomes ready [ 67.479592][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link be= comes ready [ 67.486473][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link b= ecomes ready [ 67.495730][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link be= comes ready [ 67.506916][ T5650] hsr0: Slave A (hsr_slave_0) is not up; please bring = it up to get a fully working HSR network [ 67.515281][ T5650] hsr0: Slave B (hsr_slave_1) is not up; please bring = it up to get a fully working HSR network [ 67.528862][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes r= eady [ 67.536372][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link bec= omes ready [ 67.542979][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link bec= omes ready [ 67.557870][ T138] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes re= ady [ 67.610902][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes = ready [ 67.617048][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes = ready [ 67.627882][ T5650] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.640213][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link= becomes ready [ 67.654490][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link beco= mes ready [ 67.662159][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes r= eady [ 67.668580][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes r= eady [ 67.677187][ T5650] device veth0_vlan entered promiscuous mode [ 67.691806][ T5650] device veth1_vlan entered promiscuous mode [ 67.706055][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link become= s ready [ 67.713533][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link become= s ready [ 67.720200][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link b= ecomes ready [ 67.729527][ T5650] device veth0_macvtap entered promiscuous mode [ 67.749810][ T5650] device veth1_macvtap entered promiscuous mode [ 67.761853][ T5650] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 67.767891][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link become= s ready [ 67.776673][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link = becomes ready [ 67.784850][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link= becomes ready [ 67.793939][ T5650] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 67.801258][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link = becomes ready [ 67.808485][ T18] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link= becomes ready [ 67.817996][ T5650] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 67.828026][ T5650] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 67.835828][ T5650] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 67.843642][ T5650] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 67.857737][ T18] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ 67.865522][ T18] UBSAN: signed-integer-overflow in ./arch/x86/include= /asm/atomic.h:165:11 [ 67.872603][ T18] 995543531 + 1319321246 cannot be represented in type= 'int' [ 67.879702][ T18] CPU: 0 PID: 18 Comm: kworker/u2:1 Not tainted syzkal= ler #0 [ 67.886045][ T18] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), = BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 67.895362][ T18] Workqueue: wg-kex-wg0 wg_packet_handshake_send_worke= r [ 67.901364][ T18] Call Trace: [ 67.904328][ T18] dump_stack+0xfd/0x16e [ 67.908005][ T18] ubsan_epilogue+0xa/0x30 [ 67.911778][ T18] handle_overflow+0x192/0x1b0 [ 67.915876][ T18] ? prandom_u32+0x217/0x260 [ 67.919849][ T18] ip_idents_reserve+0x14a/0x170 [ 67.924126][ T18] __ip_select_ident+0xe4/0x1c0 [ 67.928256][ T18] iptunnel_xmit+0x468/0x850 [ 67.932244][ T18] udp_tunnel_xmit_skb+0x1ba/0x290 [ 67.936638][ T18] send4+0x5d4/0xaf0 [ 67.939990][ T18] wg_socket_send_skb_to_peer+0xcd/0x1c0 [ 67.944630][ T18] wg_packet_handshake_send_worker+0x16b/0x280 [ 67.949906][ T18] process_one_work+0x85e/0xff0 [ 67.954046][ T18] worker_thread+0xa9b/0x1430 [ 67.958082][ T18] ? rcu_lock_release+0x20/0x20 [ 67.962220][ T18] kthread+0x386/0x410 [ 67.965686][ T18] ? rcu_lock_release+0x20/0x20 [ 67.969859][ T18] ? kthread_blkcg+0xd0/0xd0 [ 67.973836][ T18] ret_from_fork+0x1f/0x30 [ 67.977674][ T18] =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D [ 67.985359][ T18] Kernel panic - not syncing: UBSAN: panic_on_warn set= ... [ 67.991361][ T18] CPU: 0 PID: 18 Comm: kworker/u2:1 Not tainted syzkal= ler #0 [ 67.997465][ T18] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), = BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 68.006318][ T18] Workqueue: wg-kex-wg0 wg_packet_handshake_send_worke= r [ 68.012069][ T18] Call Trace: [ 68.014829][ T18] dump_stack+0xfd/0x16e [ 68.018379][ T18] panic+0x2f0/0x9c0 [ 68.021631][ T18] check_panic_on_warn+0x95/0xe0 [ 68.025741][ T18] handle_overflow+0x192/0x1b0 [ 68.029775][ T18] ? prandom_u32+0x217/0x260 [ 68.033699][ T18] ip_idents_reserve+0x14a/0x170 [ 68.037834][ T18] __ip_select_ident+0xe4/0x1c0 [ 68.042016][ T18] iptunnel_xmit+0x468/0x850 [ 68.045881][ T18] udp_tunnel_xmit_skb+0x1ba/0x290 [ 68.050153][ T18] send4+0x5d4/0xaf0 [ 68.053501][ T18] wg_socket_send_skb_to_peer+0xcd/0x1c0 [ 68.058253][ T18] wg_packet_handshake_send_worker+0x16b/0x280 [ 68.063426][ T18] process_one_work+0x85e/0xff0 [ 68.067469][ T18] worker_thread+0xa9b/0x1430 [ 68.071345][ T18] ? rcu_lock_release+0x20/0x20 [ 68.075396][ T18] kthread+0x386/0x410 [ 68.078889][ T18] ? rcu_lock_release+0x20/0x20 [ 68.083007][ T18] ? kthread_blkcg+0xd0/0xd0 [ 68.086908][ T18] ret_from_fork+0x1f/0x30 [ 68.090956][ T18] Kernel Offset: disabled [ 68.094683][ T18] Rebooting in 86400 seconds.. VM DIAGNOSIS: 06:30:55 Registers: info registers vcpu 0 CPU#0 RAX=3D0000000000000039 RBX=3D0000000000000039 RCX=3D0000000000000000 RDX=3D= 00000000000003f8 RSI=3D0000000000000000 RDI=3D0000000000000020 RBP=3D00000000000003f8 RSP=3D= ffffc900004474e0 R8 =3Ddffffc0000000000 R9 =3Dfffff52000088e9e R10=3Dfffff52000088e9e R11=3D= ffffffff83f6a690 R12=3Ddffffc0000000000 R13=3D1ffffffff2ad0463 R14=3Dffffffff9616bde0 R15=3D= 0000000000000000 RIP=3Dffffffff83f6a708 RFL=3D00000002 [-------] CPL=3D0 II=3D0 A20=3D1 SMM= =3D0 HLT=3D0 ES =3D0000 0000000000000000 ffffffff 00c00000 CS =3D0010 0000000000000000 ffffffff 00a09b00 DPL=3D0 CS64 [-RA] SS =3D0018 0000000000000000 ffffffff 00c09300 DPL=3D0 DS [-WA] DS =3D0000 0000000000000000 ffffffff 00c00000 FS =3D0000 0000000000000000 ffffffff 00c00000 GS =3D0000 ffff888020600000 ffffffff 00c00000 LDT=3D0000 0000000000000000 ffffffff 00c00000 TR =3D0040 fffffe0000003000 00004087 00008b00 DPL=3D0 TSS64-busy GDT=3D fffffe0000001000 0000007f IDT=3D fffffe0000000000 00000fff CR0=3D80050033 CR2=3D00005649c4ac8168 CR3=3D000000003cee0000 CR4=3D00350ef0 DR0=3D0000000000000000 DR1=3D0000000000000000 DR2=3D0000000000000000 DR3=3D= 0000000000000000=20 DR6=3D00000000fffe0ff0 DR7=3D0000000000000400 EFER=3D0000000000000d01 FCW=3D037f FSW=3D0000 [ST=3D0] FTW=3D00 MXCSR=3D00001f80 FPR0=3D0000000000000000 0000 FPR1=3D0000000000000000 0000 FPR2=3D0000000000000000 0000 FPR3=3D0000000000000000 0000 FPR4=3D0000000000000000 0000 FPR5=3D0000000000000000 0000 FPR6=3D0000000000000000 0000 FPR7=3D0000000000000000 0000 Opmask00=3D0000000004222200 Opmask01=3D0000000000000fff Opmask02=3D00000000= ffffffef Opmask03=3D0000000000000000 Opmask04=3D0000000000000000 Opmask05=3D0000000000000000 Opmask06=3D00000000= 00000000 Opmask07=3D0000000000000000 ZMM00=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 34c0e75a57eedab6 df075a43b3530442 ZMM01=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 cd93e3d1997b1ad0 ac02d2502393cada ZMM02=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 739bb957f0df0046 e893118a65186997 ZMM03=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 dcce5dad54d123ff 05ce08a3fac4eb3e ZMM04=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 00000000ffffffff 00000000000000b4 ZMM05=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000034 ZMM06=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0ad426484b0072e0 3ee4763b2d2ad138 ZMM07=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 542de23f41d7d499 0000000000000000 ZMM08=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 64f818e79afcdfd0 39f02c83a206bdbb ZMM09=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 3caa366800000000 8c2d7c3421c3af63 ZMM10=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 2a1a2c77e3ec1418 ef53c166bcfc26d7 ZMM11=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 5689bc5aba259e21 eb51e68077b68e8f ZMM12=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM13=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM14=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 a54ff53a3c6ef372 bb67ae856a09e667 ZMM15=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 5be0cd191f83d9ab 9b05688c510e527f ZMM16=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM17=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 2525252525252525 2525252525252525 2525252525252525 2525252525252525 ZMM18=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 6c6c255b20642523 00202c0028732520 3e2d205d736d756c 6c255b2064252300 ZMM19=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 4949005b05410006 000509000d560005 1b08055d56485049 49005b0541000600 ZMM20=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM21=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM22=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM23=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM24=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM25=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM26=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM27=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM28=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM29=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM30=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ZMM31=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 0000000000000000 0000000000000000 syzkaller build log: go env (err=3D) AR=3D'ar' CC=3D'gcc' CGO_CFLAGS=3D'-O2 -g' CGO_CPPFLAGS=3D'' CGO_CXXFLAGS=3D'-O2 -g' CGO_ENABLED=3D'1' CGO_FFLAGS=3D'-O2 -g' CGO_LDFLAGS=3D'-O2 -g' CXX=3D'g++' GCCGO=3D'gccgo' GO111MODULE=3D'auto' GOAMD64=3D'v1' GOARCH=3D'amd64' GOAUTH=3D'netrc' GOBIN=3D'' GOCACHE=3D'/syzkaller/.cache/go-build' GOCACHEPROG=3D'' GODEBUG=3D'' GOENV=3D'/syzkaller/.config/go/env' GOEXE=3D'' GOEXPERIMENT=3D'' GOFIPS140=3D'off' GOFLAGS=3D'' GOGCCFLAGS=3D'-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=3D0= -ffile-prefix-map=3D/tmp/go-build1854730157=3D/tmp/go-build -gno-record-gc= c-switches' GOHOSTARCH=3D'amd64' GOHOSTOS=3D'linux' GOINSECURE=3D'' GOMOD=3D'/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller/go.mo= d' GOMODCACHE=3D'/syzkaller/jobs/linux/gopath/pkg/mod' GONOPROXY=3D'' GONOSUMDB=3D'' GOOS=3D'linux' GOPATH=3D'/syzkaller/jobs/linux/gopath' GOPRIVATE=3D'' GOPROXY=3D'https://proxy.golang.org,direct' GOROOT=3D'/usr/local/go' GOSUMDB=3D'sum.golang.org' GOTELEMETRY=3D'local' GOTELEMETRYDIR=3D'/syzkaller/.config/go/telemetry' GOTMPDIR=3D'' GOTOOLCHAIN=3D'auto' GOTOOLDIR=3D'/usr/local/go/pkg/tool/linux_amd64' GOVCS=3D'' GOVERSION=3D'go1.24.4' GOWORK=3D'' PKG_CONFIG=3D'pkg-config' git status (err=3D) HEAD detached at 001c90610fb 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/contribut= ing.md#using-syz-env go list -f '{{.Stale}}' -ldflags=3D"-s -w -X github.com/google/syzkaller/pr= og.GitRevision=3D001c90610fb2f2ac7cbbc9cd6af3f547b821a8ad -X github.com/goo= gle/syzkaller/prog.gitRevisionDate=3D20250926-171341" ./sys/syz-sysgen | g= rep -q false || go install -ldflags=3D"-s -w -X github.com/google/syzkaller= /prog.GitRevision=3D001c90610fb2f2ac7cbbc9cd6af3f547b821a8ad -X github.com/= google/syzkaller/prog.gitRevisionDate=3D20250926-171341" ./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/contribut= ing.md#using-syz-env bin/syz-sysgen touch .descriptions GOOS=3Dlinux GOARCH=3Damd64 go build -ldflags=3D"-s -w -X github.com/google= /syzkaller/prog.GitRevision=3D001c90610fb2f2ac7cbbc9cd6af3f547b821a8ad -X g= ithub.com/google/syzkaller/prog.gitRevisionDate=3D20250926-171341" -o ./bi= n/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 -Wfr= ame-larger-than=3D16384 -Wno-stringop-overflow -Wno-array-bounds -Wno-forma= t-overflow -Wno-unused-but-set-variable -Wno-unused-command-line-argument -= static-pie -std=3Dc++17 -I. -Iexecutor/_include -DGOOS_linux=3D1 -DGOARCH= _amd64=3D1 \ -DHOSTGOOS_linux=3D1 -DGIT_REVISION=3D\"001c90610fb2f2ac7cbbc9cd6af3f547b8= 21a8ad\" /usr/bin/ld: /tmp/ccDmF0ws.o: in function `Connection::Connect(char const*,= char const*)': executor.cc:(.text._ZN10Connection7ConnectEPKcS1_[_ZN10Connection7ConnectEP= KcS1_]+0x104): warning: Using 'gethostbyname' in statically linked applicat= ions requires at runtime the shared libraries from the glibc version used f= or 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=3D11583e7c580000 Tested on: commit: d3d0b4e2 Linux 5.10.245 git tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linu= x.git linux-5.10.y kernel config: https://syzkaller.appspot.com/x/.config?x=3D7c6f4ecbfb251fb dashboard link: https://syzkaller.appspot.com/bug?extid=3D30b53487d00b4f7f0= 922 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-= 1~exp1~20250708183702.136), Debian LLD 20.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=3D145b6fe25800= 00