Extracting prog: 1h5m20.449136042s Minimizing prog: 54m41.9858961s Simplifying prog options: 0s Extracting C: 3m9.771674217s Simplifying C: 26m55.032161228s 13 programs, 3 VMs, timeouts [6m0s] extracting reproducer from 13 programs single: executing 3 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$ppp-socket$packet-setsockopt$packet_int-setsockopt$packet_int-socket$inet6_tcp-ioctl$sock_SIOCGIFINDEX-sendto$packet detailed listing: executing program 0: openat$ppp(0xffffffffffffff9c, 0x0, 0x0, 0x0) r0 = socket$packet(0x11, 0x3, 0x300) setsockopt$packet_int(r0, 0x107, 0xf, &(0x7f0000000000)=0x9, 0x4) setsockopt$packet_int(r0, 0x107, 0x14, &(0x7f0000000040)=0x2a, 0x4) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'bridge0\x00', 0x0}) sendto$packet(r0, &(0x7f0000000180)="0b041000e0ff030002004788aa96a13bb1000000000008004000", 0x10000, 0x0, &(0x7f0000000140)={0x11, 0x0, r2}, 0x14) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-sendmsg$nl_generic detailed listing: executing program 0: r0 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$nl_generic(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000001c0)={0x20, 0x27, 0x9, 0x0, 0x0, {0x3}, [@nested={0xc, 0x1, 0x0, 0x1, [@typed={0x6, 0x0, 0x0, 0x0, @str='\b\x00'}]}]}, 0x20}}, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_sctp-setsockopt$inet_sctp6_SCTP_SOCKOPT_BINDX_ADD-sendto$inet6-setsockopt$inet_sctp6_SCTP_EVENTS-recvmmsg detailed listing: executing program 0: r0 = socket$inet6_sctp(0xa, 0x5, 0x84) setsockopt$inet_sctp6_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000900)=[@in={0x2, 0x4e23, @loopback}, @in6={0xa, 0x0, 0x0, @loopback, 0xffffffff}], 0x2c) sendto$inet6(r0, &(0x7f0000847fff)='X', 0x1, 0x0, &(0x7f000005ffe4)={0xa, 0x4e23, 0x0, @loopback}, 0x1c) setsockopt$inet_sctp6_SCTP_EVENTS(r0, 0x84, 0xb, &(0x7f0000000580)={0x7}, 0xe) recvmmsg(r0, &(0x7f0000000100)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000000240)=""/32, 0x5}}], 0x196, 0x0, 0x0) program did not crash single: failed to extract reproducer bisect: bisecting 13 programs with base timeout 6m0s testing program (duration=6m3s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 25, 3, 7, 15, 5, 2, 8, 12, 18, 5, 2, 7] detailed listing: executing program 3: r0 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$netlbl_cipso(&(0x7f0000000000), r0) sendmsg$NLBL_CIPSOV4_C_ADD(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f0000000100)={&(0x7f00000002c0)=ANY=[@ANYBLOB='H\x00\x00\x00', @ANYRES16=r1, @ANYBLOB="010000000000000000000100000018000c8014000b80080009000000000008000a00000000000800010000000000080002"], 0x48}}, 0x0) executing program 3: prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r0 = getpid() sched_setaffinity(0x0, 0x0, 0x0) sched_setscheduler(r0, 0x2, &(0x7f0000000200)=0x5) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r1, &(0x7f0000000180)=@file={0x0, './file0\x00'}, 0x6e) sendmmsg$unix(r2, &(0x7f00000bd000), 0x318, 0x0) recvmmsg(r1, &(0x7f00000000c0), 0x10106, 0x2, 0x0) prctl$PR_SCHED_CORE(0x3e, 0x3, r0, 0x3, 0x0) r3 = getpid() process_vm_readv(r3, &(0x7f0000008400)=[{0x0}], 0x1, &(0x7f0000008640)=[{0x0}], 0x1, 0x0) r4 = bpf$MAP_CREATE_CONST_STR(0x0, &(0x7f0000000340)={0x2, 0x4, 0x8, 0x1, 0x80, 0x0, 0x0, '\x00', 0x0, 0x0}, 0x48) bpf$BPF_MAP_LOOKUP_AND_DELETE_ELEM(0x15, &(0x7f0000000000)={0xffffffffffffffff, 0x0, &(0x7f0000002780)=""/4096, 0xc26bfe8e8f6baca8}, 0x20) bpf$MAP_UPDATE_CONST_STR(0x2, &(0x7f0000000580)={{r4, 0xffffffffffffffff}, &(0x7f0000000b00), &(0x7f0000000400)='%pB \x00'}, 0x20) bpf$BPF_MAP_CONST_STR_FREEZE(0x16, &(0x7f00000000c0)={r5, 0xffffffffffffffff}, 0x4) r7 = bpf$PROG_LOAD(0x5, &(0x7f00000004c0)={0x16, 0x10, &(0x7f0000000040)=ANY=[@ANYBLOB="18000000000000000000000000000000b7080000000000007b8af8ff00000000b7080000ffff0b867b8af0ff00000000bfa100000000000007010000f8ffffffbfa400000000000007040000f0ffffffb70200000800000018230000", @ANYRES32=r6, @ANYBLOB="0000000000000000b70500000800000085000000a500000095"], &(0x7f0000000600)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x90) bpf$BPF_PROG_TEST_RUN(0xa, &(0x7f0000000640)={r7, 0x0, 0xe, 0x0, &(0x7f0000000000)="40f0538ef047b21fb60068305500", 0x0, 0xf00, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x50) r8 = syz_init_net_socket$bt_sco(0x1f, 0x5, 0x2) dup(r8) r9 = bpf$PROG_LOAD(0x5, &(0x7f00002a0fb8)={0x16, 0x4, 0x0, 0x0, 0x0, 0x99, &(0x7f0000000180)=""/153}, 0x90) bpf$BPF_PROG_TEST_RUN(0xa, &(0x7f0000000440)={r9, 0x0, 0xe, 0x2000012, &(0x7f00000000c0)="61df712bc884fed5722780b6c2a7", 0x0, 0x84a, 0x0, 0x0, 0x0, &(0x7f0000000280)}, 0x28) r10 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1) setsockopt$sock_int(0xffffffffffffffff, 0x1, 0x8, &(0x7f0000000080), 0xfd32) bind$bt_hci(r10, &(0x7f0000000040)={0x1f, 0xffffffffffffffff, 0x2}, 0x6) executing program 2: r0 = syz_genetlink_get_family_id$ipvs(&(0x7f0000000040), 0xffffffffffffffff) r1 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$IPVS_CMD_NEW_SERVICE(r1, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000080)={0x50, r0, 0x1, 0x0, 0x0, {0x2}, [@IPVS_CMD_ATTR_SERVICE={0x3c, 0x1, 0x0, 0x1, [@IPVS_SVC_ATTR_AF={0x6, 0x1, 0xa}, @IPVS_SVC_ATTR_FWMARK={0x8, 0x5, 0x700}, @IPVS_SVC_ATTR_FLAGS={0xc}, @IPVS_SVC_ATTR_NETMASK={0x8}, @IPVS_SVC_ATTR_SCHED_NAME={0x9, 0x6, 'none\x00'}, @IPVS_SVC_ATTR_TIMEOUT={0x8}]}]}, 0x50}}, 0x0) executing program 2: openat$ppp(0xffffffffffffff9c, 0x0, 0x0, 0x0) r0 = socket$packet(0x11, 0x3, 0x300) setsockopt$packet_int(r0, 0x107, 0xf, &(0x7f0000000000)=0x9, 0x4) setsockopt$packet_int(r0, 0x107, 0x14, &(0x7f0000000040)=0x2a, 0x4) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'bridge0\x00', 0x0}) sendto$packet(r0, &(0x7f0000000180)="0b041000e0ff030002004788aa96a13bb1000000000008004000", 0x10000, 0x0, &(0x7f0000000140)={0x11, 0x0, r2}, 0x14) executing program 2: socket$kcm(0x10, 0x0, 0x10) r0 = openat$adsp1(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0) bpf$MAP_CREATE_RINGBUF(0x0, 0x0, 0x0) sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7) r1 = getpid() sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4) mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0) socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000380)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r2, &(0x7f000057eff8)=@abs, 0x6e) sendmmsg$unix(r3, &(0x7f0000000000), 0x651, 0x0) recvmmsg(r2, &(0x7f00000000c0), 0x10106, 0x2, 0x0) ioctl$SNDCTL_DSP_SPEED(r0, 0xc0045002, &(0x7f0000000040)) ioctl$SNDCTL_DSP_SETFRAGMENT(r0, 0xc004500a, &(0x7f00000013c0)) read$dsp(r0, &(0x7f0000000440)=""/171, 0xab) executing program 3: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) socket$nl_generic(0x10, 0x3, 0x10) r1 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) executing program 1: r0 = openat$adsp1(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$SNDCTL_DSP_SPEED(r0, 0xc0045006, 0xffffffffffffffff) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) close(r1) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)) ioctl$SIOCSIFHWADDR(r1, 0x8943, &(0x7f0000002280)={'syzkaller0\x00'}) io_setup(0x9, &(0x7f0000000140)=0x0) io_submit(r2, 0x1, &(0x7f00000000c0)=[&(0x7f0000000100)={0x0, 0x0, 0x0, 0x5, 0x0, r0, 0x0}]) executing program 2: bpf$MAP_CREATE(0x0, 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000400)='./file1\x00', 0x0) mkdir(&(0x7f0000000300)='./bus\x00', 0x0) mkdir(&(0x7f0000000400)='./file1/file0\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f00000005c0)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1/file0'}}]}) chdir(&(0x7f00000001c0)='./bus\x00') prctl$PR_SET_SECUREBITS(0x1c, 0x3c) r0 = socket$inet_udplite(0x2, 0x2, 0x88) getsockopt$sock_cred(r0, 0x1, 0x11, &(0x7f0000000080)={0x0, 0x0}, &(0x7f00000000c0)=0x5) setresuid(0x0, r1, 0x0) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000180)='cgroup.controllers\x00', 0x275a, 0x0) executing program 2: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000001c40)={0x0, 0x3, 0x0, 0x0}, 0x90) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000080)=@gettaction={0x18, 0x5a, 0x801, 0x0, 0x0, {}, [@action_dump_flags]}, 0x18}}, 0x0) openat$tun(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0xca02}) r1 = socket$inet_udplite(0x2, 0x2, 0x88) setsockopt$inet_int(r1, 0x0, 0x0, 0x0, 0x43) close(0xffffffffffffffff) socket$nl_netfilter(0x10, 0x3, 0xc) r2 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_MSG_GETFLOWTABLE(r2, 0x0, 0x0) setsockopt$inet6_udp_encap(0xffffffffffffffff, 0x11, 0x64, 0x0, 0x0) syz_emit_ethernet(0x83, 0x0, 0x0) openat$ptmx(0xffffffffffffff9c, 0x0, 0x0, 0x0) creat(&(0x7f0000000040)='./bus\x00', 0x0) r3 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_mtu(r3, 0x29, 0x17, &(0x7f0000000000)=0x5, 0x4) connect$inet6(r3, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x3}, 0x1c) executing program 3: r0 = socket$inet6_sctp(0xa, 0x5, 0x84) setsockopt$inet_sctp6_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000900)=[@in={0x2, 0x4e23, @loopback}, @in6={0xa, 0x0, 0x0, @loopback, 0xffffffff}], 0x2c) sendto$inet6(r0, &(0x7f0000847fff)='X', 0x1, 0x0, &(0x7f000005ffe4)={0xa, 0x4e23, 0x0, @loopback}, 0x1c) setsockopt$inet_sctp6_SCTP_EVENTS(r0, 0x84, 0xb, &(0x7f0000000580)={0x7}, 0xe) recvmmsg(r0, &(0x7f0000000100)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000000240)=""/32, 0x5}}], 0x196, 0x0, 0x0) executing program 1: r0 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$nl_generic(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000001c0)={0x20, 0x27, 0x9, 0x0, 0x0, {0x3}, [@nested={0xc, 0x1, 0x0, 0x1, [@typed={0x6, 0x0, 0x0, 0x0, @str='\b\x00'}]}]}, 0x20}}, 0x0) executing program 2: openat$ppp(0xffffffffffffff9c, 0x0, 0x0, 0x0) r0 = socket$packet(0x11, 0x3, 0x300) setsockopt$packet_int(r0, 0x107, 0xf, &(0x7f0000000000)=0x9, 0x4) setsockopt$packet_int(r0, 0x107, 0x14, &(0x7f0000000040)=0x2a, 0x4) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'bridge0\x00', 0x0}) sendto$packet(r0, &(0x7f0000000180)="0b041000e0ff030002004788aa96a13bb1000000000008004000", 0x10000, 0x0, &(0x7f0000000140)={0x11, 0x0, r2}, 0x14) program crashed: INFO: task hung in netdev_run_todo bisect: bisecting 13 programs bisect: split chunks (needed=false): <13> bisect: split chunk #0 of len 13 into 3 parts bisect: testing without sub-chunk 1/3 testing program (duration=6m2s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 2, 8, 12, 18, 5, 2, 7] detailed listing: executing program 3: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) socket$nl_generic(0x10, 0x3, 0x10) r1 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) executing program 1: r0 = openat$adsp1(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$SNDCTL_DSP_SPEED(r0, 0xc0045006, 0xffffffffffffffff) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) close(r1) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)) ioctl$SIOCSIFHWADDR(r1, 0x8943, &(0x7f0000002280)={'syzkaller0\x00'}) io_setup(0x9, &(0x7f0000000140)=0x0) io_submit(r2, 0x1, &(0x7f00000000c0)=[&(0x7f0000000100)={0x0, 0x0, 0x0, 0x5, 0x0, r0, 0x0}]) executing program 2: bpf$MAP_CREATE(0x0, 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000400)='./file1\x00', 0x0) mkdir(&(0x7f0000000300)='./bus\x00', 0x0) mkdir(&(0x7f0000000400)='./file1/file0\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f00000005c0)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1/file0'}}]}) chdir(&(0x7f00000001c0)='./bus\x00') prctl$PR_SET_SECUREBITS(0x1c, 0x3c) r0 = socket$inet_udplite(0x2, 0x2, 0x88) getsockopt$sock_cred(r0, 0x1, 0x11, &(0x7f0000000080)={0x0, 0x0}, &(0x7f00000000c0)=0x5) setresuid(0x0, r1, 0x0) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000180)='cgroup.controllers\x00', 0x275a, 0x0) executing program 2: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000001c40)={0x0, 0x3, 0x0, 0x0}, 0x90) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000080)=@gettaction={0x18, 0x5a, 0x801, 0x0, 0x0, {}, [@action_dump_flags]}, 0x18}}, 0x0) openat$tun(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0xca02}) r1 = socket$inet_udplite(0x2, 0x2, 0x88) setsockopt$inet_int(r1, 0x0, 0x0, 0x0, 0x43) close(0xffffffffffffffff) socket$nl_netfilter(0x10, 0x3, 0xc) r2 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_MSG_GETFLOWTABLE(r2, 0x0, 0x0) setsockopt$inet6_udp_encap(0xffffffffffffffff, 0x11, 0x64, 0x0, 0x0) syz_emit_ethernet(0x83, 0x0, 0x0) openat$ptmx(0xffffffffffffff9c, 0x0, 0x0, 0x0) creat(&(0x7f0000000040)='./bus\x00', 0x0) r3 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_mtu(r3, 0x29, 0x17, &(0x7f0000000000)=0x5, 0x4) connect$inet6(r3, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x3}, 0x1c) executing program 3: r0 = socket$inet6_sctp(0xa, 0x5, 0x84) setsockopt$inet_sctp6_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000900)=[@in={0x2, 0x4e23, @loopback}, @in6={0xa, 0x0, 0x0, @loopback, 0xffffffff}], 0x2c) sendto$inet6(r0, &(0x7f0000847fff)='X', 0x1, 0x0, &(0x7f000005ffe4)={0xa, 0x4e23, 0x0, @loopback}, 0x1c) setsockopt$inet_sctp6_SCTP_EVENTS(r0, 0x84, 0xb, &(0x7f0000000580)={0x7}, 0xe) recvmmsg(r0, &(0x7f0000000100)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000000240)=""/32, 0x5}}], 0x196, 0x0, 0x0) executing program 1: r0 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$nl_generic(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000001c0)={0x20, 0x27, 0x9, 0x0, 0x0, {0x3}, [@nested={0xc, 0x1, 0x0, 0x1, [@typed={0x6, 0x0, 0x0, 0x0, @str='\b\x00'}]}]}, 0x20}}, 0x0) executing program 2: openat$ppp(0xffffffffffffff9c, 0x0, 0x0, 0x0) r0 = socket$packet(0x11, 0x3, 0x300) setsockopt$packet_int(r0, 0x107, 0xf, &(0x7f0000000000)=0x9, 0x4) setsockopt$packet_int(r0, 0x107, 0x14, &(0x7f0000000040)=0x2a, 0x4) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'bridge0\x00', 0x0}) sendto$packet(r0, &(0x7f0000000180)="0b041000e0ff030002004788aa96a13bb1000000000008004000", 0x10000, 0x0, &(0x7f0000000140)={0x11, 0x0, r2}, 0x14) program crashed: INFO: task hung in addrconf_dad_work bisect: the chunk can be dropped bisect: testing without sub-chunk 2/3 testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 2, 7] detailed listing: executing program 3: r0 = socket$inet6_sctp(0xa, 0x5, 0x84) setsockopt$inet_sctp6_SCTP_SOCKOPT_BINDX_ADD(r0, 0x84, 0x64, &(0x7f0000000900)=[@in={0x2, 0x4e23, @loopback}, @in6={0xa, 0x0, 0x0, @loopback, 0xffffffff}], 0x2c) sendto$inet6(r0, &(0x7f0000847fff)='X', 0x1, 0x0, &(0x7f000005ffe4)={0xa, 0x4e23, 0x0, @loopback}, 0x1c) setsockopt$inet_sctp6_SCTP_EVENTS(r0, 0x84, 0xb, &(0x7f0000000580)={0x7}, 0xe) recvmmsg(r0, &(0x7f0000000100)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000000240)=""/32, 0x5}}], 0x196, 0x0, 0x0) executing program 1: r0 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$nl_generic(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000180)={&(0x7f00000001c0)={0x20, 0x27, 0x9, 0x0, 0x0, {0x3}, [@nested={0xc, 0x1, 0x0, 0x1, [@typed={0x6, 0x0, 0x0, 0x0, @str='\b\x00'}]}]}, 0x20}}, 0x0) executing program 2: openat$ppp(0xffffffffffffff9c, 0x0, 0x0, 0x0) r0 = socket$packet(0x11, 0x3, 0x300) setsockopt$packet_int(r0, 0x107, 0xf, &(0x7f0000000000)=0x9, 0x4) setsockopt$packet_int(r0, 0x107, 0x14, &(0x7f0000000040)=0x2a, 0x4) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000300)={'bridge0\x00', 0x0}) sendto$packet(r0, &(0x7f0000000180)="0b041000e0ff030002004788aa96a13bb1000000000008004000", 0x10000, 0x0, &(0x7f0000000140)={0x11, 0x0, r2}, 0x14) program did not crash bisect: testing without sub-chunk 3/3 testing program (duration=6m1s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 2, 8, 12, 18] detailed listing: executing program 3: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) socket$nl_generic(0x10, 0x3, 0x10) r1 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) executing program 1: r0 = openat$adsp1(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$SNDCTL_DSP_SPEED(r0, 0xc0045006, 0xffffffffffffffff) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) close(r1) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)) ioctl$SIOCSIFHWADDR(r1, 0x8943, &(0x7f0000002280)={'syzkaller0\x00'}) io_setup(0x9, &(0x7f0000000140)=0x0) io_submit(r2, 0x1, &(0x7f00000000c0)=[&(0x7f0000000100)={0x0, 0x0, 0x0, 0x5, 0x0, r0, 0x0}]) executing program 2: bpf$MAP_CREATE(0x0, 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000400)='./file1\x00', 0x0) mkdir(&(0x7f0000000300)='./bus\x00', 0x0) mkdir(&(0x7f0000000400)='./file1/file0\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f00000005c0)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1/file0'}}]}) chdir(&(0x7f00000001c0)='./bus\x00') prctl$PR_SET_SECUREBITS(0x1c, 0x3c) r0 = socket$inet_udplite(0x2, 0x2, 0x88) getsockopt$sock_cred(r0, 0x1, 0x11, &(0x7f0000000080)={0x0, 0x0}, &(0x7f00000000c0)=0x5) setresuid(0x0, r1, 0x0) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000180)='cgroup.controllers\x00', 0x275a, 0x0) executing program 2: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000001c40)={0x0, 0x3, 0x0, 0x0}, 0x90) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000080)=@gettaction={0x18, 0x5a, 0x801, 0x0, 0x0, {}, [@action_dump_flags]}, 0x18}}, 0x0) openat$tun(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0xca02}) r1 = socket$inet_udplite(0x2, 0x2, 0x88) setsockopt$inet_int(r1, 0x0, 0x0, 0x0, 0x43) close(0xffffffffffffffff) socket$nl_netfilter(0x10, 0x3, 0xc) r2 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_MSG_GETFLOWTABLE(r2, 0x0, 0x0) setsockopt$inet6_udp_encap(0xffffffffffffffff, 0x11, 0x64, 0x0, 0x0) syz_emit_ethernet(0x83, 0x0, 0x0) openat$ptmx(0xffffffffffffff9c, 0x0, 0x0, 0x0) creat(&(0x7f0000000040)='./bus\x00', 0x0) r3 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_mtu(r3, 0x29, 0x17, &(0x7f0000000000)=0x5, 0x4) connect$inet6(r3, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x3}, 0x1c) program crashed: INFO: task hung in addrconf_dad_work bisect: the chunk can be dropped bisect: split chunks (needed=true): <5> bisect: split chunk #0 of len 5 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [12, 18] detailed listing: executing program 2: bpf$MAP_CREATE(0x0, 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000400)='./file1\x00', 0x0) mkdir(&(0x7f0000000300)='./bus\x00', 0x0) mkdir(&(0x7f0000000400)='./file1/file0\x00', 0x0) mount$overlay(0x0, &(0x7f00000000c0)='./bus\x00', &(0x7f0000000080), 0x0, &(0x7f00000005c0)={[{@workdir={'workdir', 0x3d, './bus'}}, {@lowerdir={'lowerdir', 0x3d, './file0'}}, {@upperdir={'upperdir', 0x3d, './file1/file0'}}]}) chdir(&(0x7f00000001c0)='./bus\x00') prctl$PR_SET_SECUREBITS(0x1c, 0x3c) r0 = socket$inet_udplite(0x2, 0x2, 0x88) getsockopt$sock_cred(r0, 0x1, 0x11, &(0x7f0000000080)={0x0, 0x0}, &(0x7f00000000c0)=0x5) setresuid(0x0, r1, 0x0) openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000180)='cgroup.controllers\x00', 0x275a, 0x0) executing program 2: bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000001c40)={0x0, 0x3, 0x0, 0x0}, 0x90) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000080)=@gettaction={0x18, 0x5a, 0x801, 0x0, 0x0, {}, [@action_dump_flags]}, 0x18}}, 0x0) openat$tun(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0xca02}) r1 = socket$inet_udplite(0x2, 0x2, 0x88) setsockopt$inet_int(r1, 0x0, 0x0, 0x0, 0x43) close(0xffffffffffffffff) socket$nl_netfilter(0x10, 0x3, 0xc) r2 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_MSG_GETFLOWTABLE(r2, 0x0, 0x0) setsockopt$inet6_udp_encap(0xffffffffffffffff, 0x11, 0x64, 0x0, 0x0) syz_emit_ethernet(0x83, 0x0, 0x0) openat$ptmx(0xffffffffffffff9c, 0x0, 0x0, 0x0) creat(&(0x7f0000000040)='./bus\x00', 0x0) r3 = socket$inet6_tcp(0xa, 0x1, 0x0) setsockopt$inet6_mtu(r3, 0x29, 0x17, &(0x7f0000000000)=0x5, 0x4) connect$inet6(r3, &(0x7f0000000180)={0xa, 0x0, 0x0, @local, 0x3}, 0x1c) program did not crash bisect: testing without sub-chunk 2/2 testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 2, 8] detailed listing: executing program 3: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) socket$nl_generic(0x10, 0x3, 0x10) r1 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) executing program 1: r0 = openat$adsp1(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$SNDCTL_DSP_SPEED(r0, 0xc0045006, 0xffffffffffffffff) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) close(r1) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)) ioctl$SIOCSIFHWADDR(r1, 0x8943, &(0x7f0000002280)={'syzkaller0\x00'}) io_setup(0x9, &(0x7f0000000140)=0x0) io_submit(r2, 0x1, &(0x7f00000000c0)=[&(0x7f0000000100)={0x0, 0x0, 0x0, 0x5, 0x0, r0, 0x0}]) program crashed: INFO: task hung in netdev_run_todo bisect: the chunk can be dropped bisect: split chunks (needed=true): <3> bisect: split chunk #0 of len 3 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$tun-ioctl$TUNSETIFF-openat$tun-close-socketpair$unix-ioctl$SIOCSIFHWADDR-io_setup-io_submit detailed listing: executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000080), 0x0, 0x0) close(r1) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)) ioctl$SIOCSIFHWADDR(r1, 0x8943, &(0x7f0000002280)={'syzkaller0\x00'}) io_setup(0x9, &(0x7f0000000140)=0x0) io_submit(r2, 0x1, &(0x7f00000000c0)=[&(0x7f0000000100)={0x0, 0x0, 0x0, 0x5, 0x0, r0, 0x0}]) program did not crash bisect: testing without sub-chunk 2/2 testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 2] detailed listing: executing program 3: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) socket$nl_generic(0x10, 0x3, 0x10) r1 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) executing program 1: r0 = openat$adsp1(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$SNDCTL_DSP_SPEED(r0, 0xc0045006, 0xffffffffffffffff) program crashed: INFO: task hung in linkwatch_event bisect: the chunk can be dropped bisect: split chunks (needed=true): <2> bisect: split chunk #0 of len 2 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$adsp1-ioctl$SNDCTL_DSP_SPEED detailed listing: executing program 1: r0 = openat$adsp1(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0) ioctl$SNDCTL_DSP_SPEED(r0, 0xc0045006, 0xffffffffffffffff) program did not crash bisect: testing without sub-chunk 2/2 testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-ftruncate-socket$nl_generic-socket$nl_route-sendmsg$nl_route_sched detailed listing: executing program 3: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) socket$nl_generic(0x10, 0x3, 0x10) r1 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) program crashed: INFO: task hung in cangw_pernet_exit bisect: the chunk can be dropped bisect: split chunks (needed=true): <1> bisect: split chunk #0 of len 1 into 2 parts bisect: no way to further split the chunk bisect: 1 programs left: executing program 3: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) socket$nl_generic(0x10, 0x3, 0x10) r1 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) bisect: trying to concatenate bisect: concatenate 1 entries testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-ftruncate-socket$nl_generic-socket$nl_route-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) socket$nl_generic(0x10, 0x3, 0x10) r1 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) program crashed: INFO: task hung in addrconf_dad_work bisect: concatenation succeeded found reproducer with 5 syscalls minimizing guilty program testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-ftruncate-socket$nl_generic-socket$nl_route detailed listing: executing program 0: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) socket$nl_generic(0x10, 0x3, 0x10) socket$nl_route(0x10, 0x3, 0x0) program did not crash testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-ftruncate-socket$nl_generic-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) socket$nl_generic(0x10, 0x3, 0x10) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) program did not crash testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-ftruncate-socket$nl_route-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) ftruncate(r0, 0x0) r1 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) program crashed: INFO: task hung in cangw_pernet_exit testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-socket$nl_route-sendmsg$nl_route_sched detailed listing: executing program 0: openat(0xffffffffffffff9c, 0x0, 0x601c2, 0x0) r0 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) program crashed: INFO: task hung in addrconf_dad_work testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={&(0x7f0000001c40)=@newtaction={0xf0, 0x30, 0x1, 0x0, 0x0, {}, [{0xdc, 0x1, [@m_police={0x6c, 0x1, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c}]]}, {0x4}, {0xc}, {0xc}}}, @m_police={0x6c, 0x2, 0x0, 0x0, {{0xb}, {0x40, 0x2, 0x0, 0x1, [[@TCA_POLICE_TBF={0x3c, 0x1, {0x1}}]]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xf0}}, 0x0) program crashed: INFO: task hung in netdev_run_todo testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r0, 0x0, 0x0) program did not crash testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r0, &(0x7f0000000300)={0x0, 0x0, 0x0}, 0x0) program did not crash testing program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r0, &(0x7f0000000300)={0x0, 0x0, &(0x7f00000002c0)={0x0}}, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=9m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched program crashed: INFO: task hung in rtnetlink_rcv_msg simplifying C reproducer testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched program crashed: INFO: task hung in rtnetlink_rcv_msg testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched program crashed: INFO: task hung in addrconf_dad_work testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched program crashed: INFO: task hung in __netlink_dump_start testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched program crashed: INFO: task hung in addrconf_verify_work testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched program crashed: INFO: task hung in addrconf_verify_work testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched program crashed: INFO: task hung in addrconf_verify_work testing compiled C program (duration=9m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-sendmsg$nl_route_sched program crashed: INFO: task hung in addrconf_verify_work reproducing took 2h30m7.238882327s repro crashed as (corrupted=false): INFO: task kworker/0:0:7 blocked for more than 143 seconds. Not tainted 5.15.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:24760 pid: 7 ppid: 2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_verify_work Call Trace: context_switch kernel/sched/core.c:5030 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376 schedule+0x11b/0x1f0 kernel/sched/core.c:6459 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518 __mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4656 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300 Showing all locks held in the system: 3 locks held by kworker/0:0/7: #0: ffff88814a678538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283 #1: ffffc90000cc7d20 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285 #2: ffffffff8d9e7e48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4656 1 lock held by khungtaskd/27: #0: ffffffff8c91fae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/3261: #0: ffff888024e53098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc9000229b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158 1 lock held by syz-executor974/3530: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.160-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xe72/0xeb0 kernel/hung_task.c:295 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3530 Comm: syz-executor974 Not tainted 5.15.160-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:hlock_class kernel/locking/lockdep.c:197 [inline] RIP: 0010:__lock_acquire+0x1211/0x1ff0 kernel/locking/lockdep.c:5009 Code: 00 00 41 8b 1f 81 e3 ff 1f 00 00 89 d8 c1 e8 06 48 8d 3c c5 c0 80 bf 8f be 08 00 00 00 e8 87 68 67 00 48 0f a3 1d df bc 5c 0e <73> 1b 48 8d 04 5b 48 c1 e0 06 48 8d 98 c0 df 8e 8f 48 ba 00 00 00 RSP: 0018:ffffc90002d66480 EFLAGS: 00000057 RAX: 0000000000000001 RBX: 0000000000000669 RCX: ffffffff8162c3d9 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fbf8188 RBP: 83e8343fbcdf6e0b R08: dffffc0000000000 R09: fffffbfff1f7f032 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff8880133828a8 R14: ffff888013381dc0 R15: ffff8880133828f8 FS: 0000555556277380(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f917b8d7580 CR3: 000000007a12d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 tcf_idr_check_alloc+0xa1/0x380 net/sched/act_api.c:568 tcf_police_init+0x294/0x17c0 net/sched/act_police.c:84 tcf_action_init_1+0x50f/0x7f0 net/sched/act_api.c:1051 tcf_action_init+0x2f3/0x750 net/sched/act_api.c:1110 tcf_action_add net/sched/act_api.c:1522 [inline] tc_ctl_action+0x49b/0xd00 net/sched/act_api.c:1581 rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5629 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2508 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x7b6/0x980 net/netlink/af_netlink.c:1356 netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1924 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2431 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2485 __sys_sendmsg net/socket.c:2514 [inline] __do_sys_sendmsg net/socket.c:2523 [inline] __se_sys_sendmsg+0x19a/0x260 net/socket.c:2521 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fae605e2df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff38c97298 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fae605e2df9 RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.766 msecs final repro crashed as (corrupted=false): INFO: task kworker/0:0:7 blocked for more than 143 seconds. Not tainted 5.15.160-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:0 state:D stack:24760 pid: 7 ppid: 2 flags:0x00004000 Workqueue: ipv6_addrconf addrconf_verify_work Call Trace: context_switch kernel/sched/core.c:5030 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376 schedule+0x11b/0x1f0 kernel/sched/core.c:6459 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518 __mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4656 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300 Showing all locks held in the system: 3 locks held by kworker/0:0/7: #0: ffff88814a678538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283 #1: ffffc90000cc7d20 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285 #2: ffffffff8d9e7e48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4656 1 lock held by khungtaskd/27: #0: ffffffff8c91fae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/3261: #0: ffff888024e53098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc9000229b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158 1 lock held by syz-executor974/3530: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.160-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xe72/0xeb0 kernel/hung_task.c:295 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3530 Comm: syz-executor974 Not tainted 5.15.160-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:hlock_class kernel/locking/lockdep.c:197 [inline] RIP: 0010:__lock_acquire+0x1211/0x1ff0 kernel/locking/lockdep.c:5009 Code: 00 00 41 8b 1f 81 e3 ff 1f 00 00 89 d8 c1 e8 06 48 8d 3c c5 c0 80 bf 8f be 08 00 00 00 e8 87 68 67 00 48 0f a3 1d df bc 5c 0e <73> 1b 48 8d 04 5b 48 c1 e0 06 48 8d 98 c0 df 8e 8f 48 ba 00 00 00 RSP: 0018:ffffc90002d66480 EFLAGS: 00000057 RAX: 0000000000000001 RBX: 0000000000000669 RCX: ffffffff8162c3d9 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fbf8188 RBP: 83e8343fbcdf6e0b R08: dffffc0000000000 R09: fffffbfff1f7f032 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffff8880133828a8 R14: ffff888013381dc0 R15: ffff8880133828f8 FS: 0000555556277380(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f917b8d7580 CR3: 000000007a12d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __mutex_lock_common+0x1da/0x25a0 kernel/locking/mutex.c:596 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 tcf_idr_check_alloc+0xa1/0x380 net/sched/act_api.c:568 tcf_police_init+0x294/0x17c0 net/sched/act_police.c:84 tcf_action_init_1+0x50f/0x7f0 net/sched/act_api.c:1051 tcf_action_init+0x2f3/0x750 net/sched/act_api.c:1110 tcf_action_add net/sched/act_api.c:1522 [inline] tc_ctl_action+0x49b/0xd00 net/sched/act_api.c:1581 rtnetlink_rcv_msg+0x993/0xee0 net/core/rtnetlink.c:5629 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2508 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline] netlink_unicast+0x7b6/0x980 net/netlink/af_netlink.c:1356 netlink_sendmsg+0xa30/0xd60 net/netlink/af_netlink.c:1924 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2431 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2485 __sys_sendmsg net/socket.c:2514 [inline] __do_sys_sendmsg net/socket.c:2523 [inline] __se_sys_sendmsg+0x19a/0x260 net/socket.c:2521 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fae605e2df9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff38c97298 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fae605e2df9 RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000006 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.766 msecs