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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: T5709] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.240298][ T5709] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.252314][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes r= eady [ 68.259280][ T3052] bridge0: port 1(bridge_slave_0) entered disabled sta= te [ 68.266321][ T3052] bridge0: port 2(bridge_slave_1) entered disabled sta= te [ 68.273111][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes r= eady [ 68.283113][ T5709] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.292693][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link = becomes ready [ 68.299864][ T3052] bridge0: port 1(bridge_slave_0) entered blocking sta= te [ 68.306738][ T3052] bridge0: port 1(bridge_slave_0) entered forwarding s= tate [ 68.323464][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link = becomes ready [ 68.330362][ T3052] bridge0: port 2(bridge_slave_1) entered blocking sta= te [ 68.336215][ T3052] bridge0: port 2(bridge_slave_1) entered forwarding s= tate [ 68.345510][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link be= comes ready [ 68.360723][ T5709] hsr0: Slave A (hsr_slave_0) is not up; please bring = it up to get a fully working HSR network [ 68.370569][ T5709] hsr0: Slave B (hsr_slave_1) is not up; please bring = it up to get a fully working HSR network [ 68.383585][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes r= eady [ 68.390265][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link be= comes ready [ 68.397595][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link bec= omes ready [ 68.404843][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link bec= omes ready [ 68.419136][ T3052] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes re= ady [ 68.475464][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes = ready [ 68.482714][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes = ready [ 68.492279][ T5709] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.504284][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link= becomes ready [ 68.518322][ T5709] device veth0_vlan entered promiscuous mode [ 68.524533][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link beco= mes ready [ 68.532452][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes r= eady [ 68.538937][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes r= eady [ 68.548991][ T5709] device veth1_vlan entered promiscuous mode [ 68.561923][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link become= s ready [ 68.577076][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link become= s ready [ 68.584768][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link b= ecomes ready [ 68.593467][ T5709] device veth0_macvtap entered promiscuous mode [ 68.600185][ T5709] device veth1_macvtap entered promiscuous mode [ 68.612225][ T5709] batman_adv: batadv0: Interface activated: batadv_sla= ve_0 [ 68.618206][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link= becomes ready [ 68.627196][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link become= s ready [ 68.636160][ T5709] batman_adv: batadv0: Interface activated: batadv_sla= ve_1 [ 68.642694][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link= becomes ready [ 68.650882][ T5709] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 68.658395][ T5709] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 68.666616][ T5709] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 68.674870][ T5709] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 f= amily 0 port 6081 - 0 [ 68.687772][ T3020] =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 [ 68.695596][ T3020] UBSAN: signed-integer-overflow in ./arch/x86/include= /asm/atomic.h:165:11 [ 68.703028][ T3020] 1496745227 + 1827093953 cannot be represented in typ= e 'int' [ 68.710244][ T3020] CPU: 0 PID: 3020 Comm: kworker/u2:4 Not tainted syzk= aller #0 [ 68.716579][ T3020] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), = BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 68.725798][ T3020] Workqueue: wg-kex-wg0 wg_packet_handshake_send_worke= r [ 68.731523][ T3020] Call Trace: [ 68.734230][ T3020] dump_stack+0xfd/0x16e [ 68.737665][ T3020] ubsan_epilogue+0xa/0x30 [ 68.741273][ T3020] handle_overflow+0x192/0x1b0 [ 68.745235][ T3020] ? prandom_u32+0x217/0x260 [ 68.748968][ T3020] ip_idents_reserve+0x14a/0x170 [ 68.753042][ T3020] __ip_select_ident+0xe4/0x1c0 [ 68.757100][ T3020] iptunnel_xmit+0x468/0x850 [ 68.760939][ T3020] udp_tunnel_xmit_skb+0x1ba/0x290 [ 68.765181][ T3020] send4+0x5d4/0xaf0 [ 68.768350][ T3020] wg_socket_send_skb_to_peer+0xcd/0x1c0 [ 68.772983][ T3020] wg_packet_handshake_send_worker+0x16b/0x280 [ 68.778059][ T3020] process_one_work+0x85e/0xff0 [ 68.782159][ T3020] worker_thread+0xa9b/0x1430 [ 68.786018][ T3020] ? rcu_lock_release+0x20/0x20 [ 68.790096][ T3020] kthread+0x386/0x410 [ 68.793572][ T3020] ? rcu_lock_release+0x20/0x20 [ 68.797547][ T3020] ? kthread_blkcg+0xd0/0xd0 [ 68.801233][ T3020] ret_from_fork+0x1f/0x30 [ 68.805017][ T3020] =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 [ 68.812880][ T3020] Kernel panic - not syncing: UBSAN: panic_on_warn set= ... [ 68.818697][ T3020] CPU: 0 PID: 3020 Comm: kworker/u2:4 Not tainted syzk= aller #0 [ 68.824803][ T3020] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), = BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 68.833531][ T3020] Workqueue: wg-kex-wg0 wg_packet_handshake_send_worke= r [ 68.839263][ T3020] Call Trace: [ 68.841987][ T3020] dump_stack+0xfd/0x16e [ 68.845483][ T3020] panic+0x2f0/0x9c0 [ 68.848723][ T3020] check_panic_on_warn+0x95/0xe0 [ 68.852928][ T3020] handle_overflow+0x192/0x1b0 [ 68.856879][ T3020] ? prandom_u32+0x217/0x260 [ 68.860645][ T3020] ip_idents_reserve+0x14a/0x170 [ 68.864734][ T3020] __ip_select_ident+0xe4/0x1c0 [ 68.868721][ T3020] iptunnel_xmit+0x468/0x850 [ 68.872545][ T3020] udp_tunnel_xmit_skb+0x1ba/0x290 [ 68.876778][ T3020] send4+0x5d4/0xaf0 [ 68.879994][ T3020] wg_socket_send_skb_to_peer+0xcd/0x1c0 [ 68.884597][ T3020] wg_packet_handshake_send_worker+0x16b/0x280 [ 68.889687][ T3020] process_one_work+0x85e/0xff0 [ 68.893658][ T3020] worker_thread+0xa9b/0x1430 [ 68.897487][ T3020] ? rcu_lock_release+0x20/0x20 [ 68.901443][ T3020] kthread+0x386/0x410 [ 68.904823][ T3020] ? rcu_lock_release+0x20/0x20 [ 68.908761][ T3020] ? kthread_blkcg+0xd0/0xd0 [ 68.912531][ T3020] ret_from_fork+0x1f/0x30 [ 68.916474][ T3020] Kernel Offset: disabled [ 68.920027][ T3020] Rebooting in 86400 seconds.. VM DIAGNOSIS: 07:21:42 Registers: info registers vcpu 0 CPU#0 RAX=3D1ffffffff2c2d760 RBX=3D00000000000003fd RCX=3D0000000000000000 RDX=3D= 00000000000003fd RSI=3D0000000000000000 RDI=3D0000000000000020 RBP=3D0000000000000020 RSP=3D= ffffc900018d7488 R8 =3Ddffffc0000000000 R9 =3Dfffff5200031ae9e R10=3Dfffff5200031ae9e R11=3D= ffffffff83f6a420 R12=3Ddffffc0000000000 R13=3D1ffffffff2ad0463 R14=3Dffffffff9616bde0 R15=3D= 0000000000000000 RIP=3Dffffffff83f6a493 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=3D00007f70fa315e9c CR3=3D00000000552ec000 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 cdbdb4c6f9b3cfa9 ccfdd53f3940cda9 ZMM01=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 61f8e5020c5491fa 26bc4e1f9a76504d ZMM02=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 d36be18d52e74008 92e0425df8168802 ZMM03=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 646f3db649b453b8 e19fc6320e65a175 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 b7184e26892817da 642e11a230cac1df ZMM07=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 027c24cb4c152817 0000000000000000 ZMM08=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 64b81aac9d6a7288 bca2e73a631a5a4e ZMM09=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 8e994ecd00000000 f2462c1638d210f8 ZMM10=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 b60ba1988284cefc 87c3fed8a05ffd9a ZMM11=3D0000000000000000 0000000000000000 0000000000000000 0000000000000000= 0000000000000000 0000000000000000 eae31e2d506dbe72 ca832c4f00373649 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-build1635881792=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/ccZqxKJx.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=3D11068c92580000 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=3D144e63cd9800= 00