Extracting prog: 5m7.227559104s Minimizing prog: 28m38.70795068s Simplifying prog options: 0s Extracting C: 2m13.973159066s Simplifying C: 30m46.711423785s extracting reproducer from 30 programs testing a last program of every proc single: executing 5 programs separately with timeout 30s testing program (duration=30s, {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$netlink-socket-sendmsg$nl_route_sched-getsockname$packet-sendmsg$nl_route-sendmsg$nl_route_sched-sendmsg-socket-sendmmsg$alg detailed listing: executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) r1 = socket(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)={0x0, 0x14}}, 0x0) getsockname$packet(r1, &(0x7f00000002c0)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @broadcast}, &(0x7f0000000100)=0x14) sendmsg$nl_route(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000000)={&(0x7f00000008c0)=ANY=[@ANYBLOB="480000001000050700000086d7c0d6c878f064eb", @ANYRES32=r2, @ANYBLOB="0000000000000000280012000c00010076657468"], 0x48}}, 0x0) sendmsg$nl_route_sched(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000300)=@newqdisc={0x38, 0x24, 0xf1d, 0x0, 0x0, {0x0, 0x0, 0x0, r2, {0x0, 0x8}, {0xfff1, 0xffff}, {0x5, 0x7}}, [@qdisc_kind_options=@q_clsact={0xb}, @TCA_RATE={0x6, 0x5, {0x0, 0x2}}]}, 0x38}, 0x1, 0x0, 0x0, 0x4014060}, 0x4000800) sendmsg(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000100)=[{&(0x7f0000000240)='/', 0x1}], 0x1}, 0x0) r3 = socket(0x10, 0x80002, 0x0) sendmmsg$alg(r3, &(0x7f0000000140)=[{0x3, 0x0, &(0x7f0000000100), 0x6, &(0x7f0000000100), 0xc}], 0x492492492492856, 0x0) program did not crash testing program (duration=30s, {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$netlink-socketpair$unix-bpf$MAP_CREATE-bpf$MAP_UPDATE_ELEM_TAIL_CALL-bpf$MAP_UPDATE_ELEM_TAIL_CALL-bind$netlink-socket$nl_generic-syz_genetlink_get_family_id$ethtool-sendmsg$ETHTOOL_MSG_COALESCE_SET detailed listing: executing program 0: r0 = socket$netlink(0x10, 0x3, 0x10) socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000001c0)) r1 = bpf$MAP_CREATE(0x0, &(0x7f00000006c0)=ANY=[@ANYBLOB="0f000000040000000400000012"], 0x48) bpf$MAP_UPDATE_ELEM_TAIL_CALL(0x2, &(0x7f0000000100)={{r1}, &(0x7f0000000040), 0x0}, 0x20) bpf$MAP_UPDATE_ELEM_TAIL_CALL(0x2, 0x0, 0x0) bind$netlink(r0, &(0x7f0000514ff4)={0x10, 0x0, 0x0, 0x2ffffffff}, 0xc) r2 = socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$ethtool(&(0x7f00000000c0), r0) sendmsg$ETHTOOL_MSG_COALESCE_SET(r2, &(0x7f0000000540)={0x0, 0x0, &(0x7f0000000500)={&(0x7f0000000180)=ANY=[@ANYBLOB='\\\x00\x00\x00', @ANYRES16=r3, @ANYBLOB="010000000000000000001400000008000a00fc00000018000180140002006e657464657673696d300000000000000800080000fcffff08000900fcfc0000080011000000000008000e00800000000800", @ANYRES64=r2], 0x5c}, 0x1, 0x0, 0x0, 0x20008005}, 0x0) program did not crash testing program (duration=30s, {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}}): setsockopt$MRT_ADD_MFC_PROXY-setsockopt$MRT_ADD_MFC-socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY detailed listing: executing program 0: setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, 0x0, 0x0) setsockopt$MRT_ADD_MFC(0xffffffffffffffff, 0x0, 0xcc, 0x0, 0x0) r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r1, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r1, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) setsockopt$MRT_ADD_MFC_PROXY(r1, 0x0, 0xd2, &(0x7f0000000200)={@multicast2, @multicast2=0xe0000300, 0x0, "ff00000058b274e6d844167fefe428970548fc3c7b00000000000000fcff00", 0xb2, 0xb, 0x6, 0x6}, 0x3c) program crashed: WARNING in ip_mr_output single: successfully extracted reproducer found reproducer with 9 syscalls minimizing guilty program testing program (duration=47.162834359s, {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}}): setsockopt$MRT_ADD_MFC_PROXY-setsockopt$MRT_ADD_MFC-socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, 0x0, 0x0) setsockopt$MRT_ADD_MFC(0xffffffffffffffff, 0x0, 0xcc, 0x0, 0x0) r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r1, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r1, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program crashed: WARNING in ip_mr_output testing program (duration=47.162834359s, {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}}): setsockopt$MRT_ADD_MFC_PROXY-setsockopt$MRT_ADD_MFC-socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq detailed listing: executing program 0: setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, 0x0, 0x0) setsockopt$MRT_ADD_MFC(0xffffffffffffffff, 0x0, 0xcc, 0x0, 0x0) r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r1, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r1, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) program did not crash testing program (duration=47.162834359s, {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}}): setsockopt$MRT_ADD_MFC_PROXY-setsockopt$MRT_ADD_MFC-socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-syz_emit_ethernet detailed listing: executing program 0: setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, 0x0, 0x0) setsockopt$MRT_ADD_MFC(0xffffffffffffffff, 0x0, 0xcc, 0x0, 0x0) socket$inet_icmp_raw(0x2, 0x3, 0x1) r0 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r0, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r0, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program did not crash testing program (duration=47.162834359s, {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}}): setsockopt$MRT_ADD_MFC_PROXY-setsockopt$MRT_ADD_MFC-socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, 0x0, 0x0) setsockopt$MRT_ADD_MFC(0xffffffffffffffff, 0x0, 0xcc, 0x0, 0x0) r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r1, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program did not crash testing program (duration=47.162834359s, {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}}): setsockopt$MRT_ADD_MFC_PROXY-setsockopt$MRT_ADD_MFC-socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, 0x0, 0x0) setsockopt$MRT_ADD_MFC(0xffffffffffffffff, 0x0, 0xcc, 0x0, 0x0) r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_ADD_VIF(r1, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program did not crash testing program (duration=47.162834359s, {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}}): setsockopt$MRT_ADD_MFC_PROXY-setsockopt$MRT_ADD_MFC-socket$inet_icmp_raw-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, 0x0, 0x0) setsockopt$MRT_ADD_MFC(0xffffffffffffffff, 0x0, 0xcc, 0x0, 0x0) r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) setsockopt$MRT_INIT(0xffffffffffffffff, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(0xffffffffffffffff, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program did not crash testing program (duration=47.162834359s, {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}}): setsockopt$MRT_ADD_MFC_PROXY-setsockopt$MRT_ADD_MFC-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, 0x0, 0x0) setsockopt$MRT_ADD_MFC(0xffffffffffffffff, 0x0, 0xcc, 0x0, 0x0) r0 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r0, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r0, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(0xffffffffffffffff, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program did not crash testing program (duration=47.162834359s, {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}}): setsockopt$MRT_ADD_MFC_PROXY-socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, 0x0, 0x0) r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r1, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r1, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program crashed: WARNING in ip_mr_output testing program (duration=47.162834359s, {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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r1, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r1, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program crashed: WARNING in ip_mr_output testing program (duration=47.162834359s, {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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r1, 0x0, 0xc8, 0x0, 0x0) setsockopt$MRT_ADD_VIF(r1, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program did not crash testing program (duration=47.162834359s, {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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r1, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r1, 0x0, 0xca, 0x0, 0x0) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program did not crash testing program (duration=47.162834359s, {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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r1, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r1, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(r0, 0x0, 0x23, 0x0, 0x0) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) program did not crash testing program (duration=47.162834359s, {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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) setsockopt$MRT_INIT(r1, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r1, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x0, 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=47.162834359s, {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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output simplifying C reproducer testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false 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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program did not crash testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program did not crash testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program did not crash testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program did not crash testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false 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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false 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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false 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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program did not crash testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output testing compiled C program (duration=47.162834359s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet program crashed: WARNING in ip_mr_output reproducing took 1h6m46.620116942s repro crashed as (corrupted=false): ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5840 at net/ipv4/ipmr.c:2302 ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302 Modules linked in: CPU: 1 UID: 0 PID: 5840 Comm: syz-executor293 Not tainted 6.16.0-rc1-syzkaller-00413-gfc4842cd0f11 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302 Code: df e9 63 f6 ff ff e8 8e 72 c6 f7 48 8b 74 24 18 45 31 f6 31 ff ba 02 00 00 00 e8 ea 14 4c ff e9 45 f6 ff ff e8 70 72 c6 f7 90 <0f> 0b 90 e9 94 f5 ff ff e8 62 72 c6 f7 90 0f 0b 90 42 80 3c 2b 00 RSP: 0018:ffffc90000a08900 EFLAGS: 00010246 RAX: ffffffff89f9ec80 RBX: ffff888072b898c0 RCX: ffff88803076da00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a08a10 R08: 0000000000000000 R09: ffffffff89d71b5d R10: dffffc0000000000 R11: ffffffff89f9e0d0 R12: 0000000000000010 R13: dffffc0000000000 R14: ffff88807c982d00 R15: 0000000000000000 FS: 000055555742f380(0000) GS:ffff888125d52000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f760ef4c000 CR3: 0000000072a70000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: igmp_send_report+0x89e/0xdb0 net/ipv4/igmp.c:799 igmp_timer_expire+0x204/0x510 net/ipv4/igmp.c:-1 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:64 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:130 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x68/0x2c0 mm/kasan/generic.c:189 Code: 00 00 00 00 ff f3 0f 1e fa 4c 39 cf 0f 82 58 02 00 00 49 89 ff 49 c1 ef 03 49 ba 00 00 00 00 00 fc ff df 4f 8d 1c 17 49 ff c8 <4d> 89 c1 49 c1 e9 03 48 bb 01 00 00 00 00 fc ff df 4d 8d 34 19 4d RSP: 0018:ffffc9000438f470 EFLAGS: 00000286 RAX: 1ffff110060edb01 RBX: ffffffff8f511c70 RCX: ffffffff819dba68 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8f511c20 RBP: 1ffffffff1ea2384 R08: ffffffff8f511c27 R09: ffff800000000000 R10: dffffc0000000000 R11: fffffbfff1ea2384 R12: ffffffff8f511c20 R13: ffffffff8f511c70 R14: dffffc0000000000 R15: 1ffffffff1ea2384 instrument_atomic_read include/linux/instrumented.h:68 [inline] atomic_long_read include/linux/atomic/atomic-instrumented.h:3188 [inline] __mutex_owner kernel/locking/mutex.h:47 [inline] mutex_spin_on_owner+0x288/0x360 kernel/locking/mutex.c:351 mutex_optimistic_spin kernel/locking/mutex.c:468 [inline] __mutex_lock_common kernel/locking/mutex.c:606 [inline] __mutex_lock+0x30c/0xe80 kernel/locking/mutex.c:747 rtnl_net_lock include/linux/rtnetlink.h:130 [inline] inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:979 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944 netlink_rcv_skb+0x205/0x470 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:727 __sys_sendto+0x3bd/0x520 net/socket.c:2226 __do_sys_sendto net/socket.c:2233 [inline] __se_sys_sendto net/socket.c:2229 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2229 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f760eecddc3 Code: 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 80 3d e1 c2 07 00 00 41 89 ca 74 14 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 75 c3 0f 1f 40 00 55 48 83 ec 30 44 89 4c 24 RSP: 002b:00007ffe93ab84f8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f760eecddc3 RDX: 0000000000000028 RSI: 00007f760ef4b410 RDI: 0000000000000003 RBP: 00007f760ef4b410 R08: 00007ffe93ab8504 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe93ab8570 R13: 00007ffe93ab8548 R14: 00007f760ef1f49c R15: 00007f760ef1a072 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: ff f3 push %rbx 6: 0f 1e fa nop %edx 9: 4c 39 cf cmp %r9,%rdi c: 0f 82 58 02 00 00 jb 0x26a 12: 49 89 ff mov %rdi,%r15 15: 49 c1 ef 03 shr $0x3,%r15 19: 49 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%r10 20: fc ff df 23: 4f 8d 1c 17 lea (%r15,%r10,1),%r11 27: 49 ff c8 dec %r8 * 2a: 4d 89 c1 mov %r8,%r9 <-- trapping instruction 2d: 49 c1 e9 03 shr $0x3,%r9 31: 48 bb 01 00 00 00 00 movabs $0xdffffc0000000001,%rbx 38: fc ff df 3b: 4d 8d 34 19 lea (%r9,%rbx,1),%r14 3f: 4d rex.WRB final repro crashed as (corrupted=false): ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5840 at net/ipv4/ipmr.c:2302 ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302 Modules linked in: CPU: 1 UID: 0 PID: 5840 Comm: syz-executor293 Not tainted 6.16.0-rc1-syzkaller-00413-gfc4842cd0f11 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:ip_mr_output+0xbb1/0xe70 net/ipv4/ipmr.c:2302 Code: df e9 63 f6 ff ff e8 8e 72 c6 f7 48 8b 74 24 18 45 31 f6 31 ff ba 02 00 00 00 e8 ea 14 4c ff e9 45 f6 ff ff e8 70 72 c6 f7 90 <0f> 0b 90 e9 94 f5 ff ff e8 62 72 c6 f7 90 0f 0b 90 42 80 3c 2b 00 RSP: 0018:ffffc90000a08900 EFLAGS: 00010246 RAX: ffffffff89f9ec80 RBX: ffff888072b898c0 RCX: ffff88803076da00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a08a10 R08: 0000000000000000 R09: ffffffff89d71b5d R10: dffffc0000000000 R11: ffffffff89f9e0d0 R12: 0000000000000010 R13: dffffc0000000000 R14: ffff88807c982d00 R15: 0000000000000000 FS: 000055555742f380(0000) GS:ffff888125d52000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f760ef4c000 CR3: 0000000072a70000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: igmp_send_report+0x89e/0xdb0 net/ipv4/igmp.c:799 igmp_timer_expire+0x204/0x510 net/ipv4/igmp.c:-1 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:64 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:130 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x68/0x2c0 mm/kasan/generic.c:189 Code: 00 00 00 00 ff f3 0f 1e fa 4c 39 cf 0f 82 58 02 00 00 49 89 ff 49 c1 ef 03 49 ba 00 00 00 00 00 fc ff df 4f 8d 1c 17 49 ff c8 <4d> 89 c1 49 c1 e9 03 48 bb 01 00 00 00 00 fc ff df 4d 8d 34 19 4d RSP: 0018:ffffc9000438f470 EFLAGS: 00000286 RAX: 1ffff110060edb01 RBX: ffffffff8f511c70 RCX: ffffffff819dba68 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8f511c20 RBP: 1ffffffff1ea2384 R08: ffffffff8f511c27 R09: ffff800000000000 R10: dffffc0000000000 R11: fffffbfff1ea2384 R12: ffffffff8f511c20 R13: ffffffff8f511c70 R14: dffffc0000000000 R15: 1ffffffff1ea2384 instrument_atomic_read include/linux/instrumented.h:68 [inline] atomic_long_read include/linux/atomic/atomic-instrumented.h:3188 [inline] __mutex_owner kernel/locking/mutex.h:47 [inline] mutex_spin_on_owner+0x288/0x360 kernel/locking/mutex.c:351 mutex_optimistic_spin kernel/locking/mutex.c:468 [inline] __mutex_lock_common kernel/locking/mutex.c:606 [inline] __mutex_lock+0x30c/0xe80 kernel/locking/mutex.c:747 rtnl_net_lock include/linux/rtnetlink.h:130 [inline] inet_rtm_newaddr+0x3b0/0x18b0 net/ipv4/devinet.c:979 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944 netlink_rcv_skb+0x205/0x470 net/netlink/af_netlink.c:2534 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline] netlink_unicast+0x758/0x8d0 net/netlink/af_netlink.c:1339 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1883 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:727 __sys_sendto+0x3bd/0x520 net/socket.c:2226 __do_sys_sendto net/socket.c:2233 [inline] __se_sys_sendto net/socket.c:2229 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2229 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f760eecddc3 Code: 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 80 3d e1 c2 07 00 00 41 89 ca 74 14 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 75 c3 0f 1f 40 00 55 48 83 ec 30 44 89 4c 24 RSP: 002b:00007ffe93ab84f8 EFLAGS: 00000202 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f760eecddc3 RDX: 0000000000000028 RSI: 00007f760ef4b410 RDI: 0000000000000003 RBP: 00007f760ef4b410 R08: 00007ffe93ab8504 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe93ab8570 R13: 00007ffe93ab8548 R14: 00007f760ef1f49c R15: 00007f760ef1a072 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 00 add %al,(%rax) 4: ff f3 push %rbx 6: 0f 1e fa nop %edx 9: 4c 39 cf cmp %r9,%rdi c: 0f 82 58 02 00 00 jb 0x26a 12: 49 89 ff mov %rdi,%r15 15: 49 c1 ef 03 shr $0x3,%r15 19: 49 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%r10 20: fc ff df 23: 4f 8d 1c 17 lea (%r15,%r10,1),%r11 27: 49 ff c8 dec %r8 * 2a: 4d 89 c1 mov %r8,%r9 <-- trapping instruction 2d: 49 c1 e9 03 shr $0x3,%r9 31: 48 bb 01 00 00 00 00 movabs $0xdffffc0000000001,%rbx 38: fc ff df 3b: 4d 8d 34 19 lea (%r9,%rbx,1),%r14 3f: 4d rex.WRB