Extracting prog: 1m38.508909047s Minimizing prog: 24m17.860452454s Simplifying prog options: 0s Extracting C: 29.927367383s Simplifying C: 16m17.134674234s extracting reproducer from 32 programs first checking the prog from the crash report single: executing 1 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$inet_icmp_raw-socket$igmp-socket$nl_netfilter-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY detailed listing: executing program 0: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) socket$nl_netfilter(0x10, 0x3, 0xc) 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)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program crashed: WARNING: suspicious RCU usage in rhltable_lookup single: successfully extracted reproducer found reproducer with 8 syscalls minimizing guilty program testing program (duration=53.069187409s, {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-socket$nl_netfilter-setsockopt$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) socket$nl_netfilter(0x10, 0x3, 0xc) setsockopt$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 did not crash testing program (duration=53.069187409s, {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-socket$nl_netfilter-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-setsockopt$MRT_ADD_MFC_PROXY detailed listing: executing program 0: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) socket$nl_netfilter(0x10, 0x3, 0xc) 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$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) setsockopt$MRT_ADD_MFC_PROXY(r1, 0x0, 0xd2, &(0x7f0000000200)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program did not crash testing program (duration=53.069187409s, {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-socket$nl_netfilter-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY detailed listing: executing program 0: socket$inet_icmp_raw(0x2, 0x3, 0x1) r0 = socket$igmp(0x2, 0x3, 0x2) socket$nl_netfilter(0x10, 0x3, 0xc) setsockopt$MRT_INIT(r0, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$MRT_ADD_VIF(r0, 0x0, 0xca, &(0x7f0000003d80)={0x0, 0x0, 0x0, 0x0, @vifc_lcl_addr=@local, @dev}, 0x10) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) setsockopt$MRT_ADD_MFC_PROXY(r0, 0x0, 0xd2, &(0x7f0000000200)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program did not crash testing program (duration=53.069187409s, {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-socket$nl_netfilter-setsockopt$MRT_INIT-setsockopt$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY detailed listing: executing program 0: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) socket$nl_netfilter(0x10, 0x3, 0xc) setsockopt$MRT_INIT(r1, 0x0, 0xc8, &(0x7f0000003d40), 0x4) setsockopt$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) setsockopt$MRT_ADD_MFC_PROXY(r1, 0x0, 0xd2, &(0x7f0000000200)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program did not crash testing program (duration=53.069187409s, {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-socket$nl_netfilter-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY detailed listing: executing program 0: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r1 = socket$igmp(0x2, 0x3, 0x2) socket$nl_netfilter(0x10, 0x3, 0xc) setsockopt$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)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program did not crash testing program (duration=53.069187409s, {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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY 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$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) setsockopt$MRT_ADD_MFC_PROXY(r1, 0x0, 0xd2, &(0x7f0000000200)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing program (duration=53.069187409s, {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$inet_icmp_raw-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY detailed listing: executing program 0: r0 = socket$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$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, &(0x7f0000000200)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program did not crash testing program (duration=53.069187409s, {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$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY detailed listing: executing program 0: r0 = socket$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$inet_mreq(0xffffffffffffffff, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) setsockopt$MRT_ADD_MFC_PROXY(r0, 0x0, 0xd2, &(0x7f0000000200)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program did not crash testing program (duration=53.069187409s, {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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY 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$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) setsockopt$MRT_ADD_MFC_PROXY(r1, 0x0, 0xd2, &(0x7f0000000200)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program did not crash testing program (duration=53.069187409s, {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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY 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$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) setsockopt$MRT_ADD_MFC_PROXY(r1, 0x0, 0xd2, &(0x7f0000000200)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program did not crash testing program (duration=53.069187409s, {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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY 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$inet_mreq(r0, 0x0, 0x23, 0x0, 0x0) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) setsockopt$MRT_ADD_MFC_PROXY(r1, 0x0, 0xd2, &(0x7f0000000200)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program did not crash testing program (duration=53.069187409s, {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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY 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$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x0, 0x0, 0x0) setsockopt$MRT_ADD_MFC_PROXY(r1, 0x0, 0xd2, &(0x7f0000000200)={@empty, @multicast2=0xe0000300, 0x0, "028a3f6c58b274e6d8451697efe42811ee1df06e9264f7d866b1970548fc3c7b", 0xb2, 0xfffffff7, 0x6, 0x6}, 0x3c) program did not crash testing program (duration=53.069187409s, {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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY 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$inet_mreq(r0, 0x0, 0x23, &(0x7f0000000000)={@multicast1=0xe0000300, @local}, 0x8) syz_emit_ethernet(0x2a, &(0x7f0000000080)={@local, @remote, @void, {@ipv4={0x800, @icmp={{0x5, 0x4, 0x0, 0x0, 0x1c, 0x0, 0x0, 0x0, 0x2, 0x0, @empty, @multicast1=0xe0000300}, @address_request}}}}, 0x0) setsockopt$MRT_ADD_MFC_PROXY(r1, 0x0, 0xd2, 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=53.069187409s, {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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup simplifying C reproducer testing compiled C program (duration=53.069187409s, {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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false 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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program did not crash testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program did not crash testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false 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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false 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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false 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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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: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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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: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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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: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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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:true UseTmpDir:false 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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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:true UseTmpDir:false 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$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup testing compiled C program (duration=53.069187409s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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$inet_icmp_raw-socket$igmp-setsockopt$MRT_INIT-setsockopt$MRT_ADD_VIF-setsockopt$inet_mreq-syz_emit_ethernet-setsockopt$MRT_ADD_MFC_PROXY program crashed: WARNING: suspicious RCU usage in rhltable_lookup reproducing took 42m43.431438518s repro crashed as (corrupted=false): ============================= WARNING: suspicious RCU usage 5.15.177-syzkaller #0 Not tainted ----------------------------- include/linux/rhashtable.h:594 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor254/4020: #0: ffff800016cb4b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 stack backtrace: CPU: 0 PID: 4020 Comm: syz-executor254 Not tainted 5.15.177-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x188/0x1e0 kernel/locking/lockdep.c:6571 __rhashtable_lookup include/linux/rhashtable.h:594 [inline] rhltable_lookup+0x6a0/0x6a8 include/linux/rhashtable.h:688 mr_mfc_find_any_parent+0xe8/0x20c net/ipv4/ipmr_base.c:83 ip_mr_forward+0x214/0xe10 net/ipv4/ipmr.c:1949 ipmr_cache_resolve net/ipv4/ipmr.c:1003 [inline] ipmr_mfc_add+0x1ea0/0x28a0 net/ipv4/ipmr.c:1262 ip_mroute_setsockopt+0xaf8/0xe94 net/ipv4/ipmr.c:1459 do_ip_setsockopt net/ipv4/ip_sockglue.c:947 [inline] ip_setsockopt+0x618/0x32cc net/ipv4/ip_sockglue.c:1430 raw_setsockopt+0x104/0x2b8 net/ipv4/raw.c:863 sock_common_setsockopt+0xb0/0xcc net/core/sock.c:3448 __sys_setsockopt+0x3a8/0x6b4 net/socket.c:2203 __do_sys_setsockopt net/socket.c:2214 [inline] __se_sys_setsockopt net/socket.c:2211 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2211 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ============================= WARNING: suspicious RCU usage 5.15.177-syzkaller #0 Not tainted ----------------------------- include/linux/rhashtable.h:369 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor254/4020: #0: ffff800016cb4b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 stack backtrace: CPU: 0 PID: 4020 Comm: syz-executor254 Not tainted 5.15.177-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x188/0x1e0 kernel/locking/lockdep.c:6571 rht_ptr_rcu include/linux/rhashtable.h:369 [inline] __rhashtable_lookup include/linux/rhashtable.h:599 [inline] rhltable_lookup+0x45c/0x6a8 include/linux/rhashtable.h:688 mr_mfc_find_any_parent+0xe8/0x20c net/ipv4/ipmr_base.c:83 ip_mr_forward+0x214/0xe10 net/ipv4/ipmr.c:1949 ipmr_cache_resolve net/ipv4/ipmr.c:1003 [inline] ipmr_mfc_add+0x1ea0/0x28a0 net/ipv4/ipmr.c:1262 ip_mroute_setsockopt+0xaf8/0xe94 net/ipv4/ipmr.c:1459 do_ip_setsockopt net/ipv4/ip_sockglue.c:947 [inline] ip_setsockopt+0x618/0x32cc net/ipv4/ip_sockglue.c:1430 raw_setsockopt+0x104/0x2b8 net/ipv4/raw.c:863 sock_common_setsockopt+0xb0/0xcc net/core/sock.c:3448 __sys_setsockopt+0x3a8/0x6b4 net/socket.c:2203 __do_sys_setsockopt net/socket.c:2214 [inline] __se_sys_setsockopt net/socket.c:2211 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2211 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ============================= WARNING: suspicious RCU usage 5.15.177-syzkaller #0 Not tainted ----------------------------- include/linux/rhashtable.h:614 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor254/4020: #0: ffff800016cb4b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 stack backtrace: CPU: 0 PID: 4020 Comm: syz-executor254 Not tainted 5.15.177-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x188/0x1e0 kernel/locking/lockdep.c:6571 __rhashtable_lookup include/linux/rhashtable.h:614 [inline] rhltable_lookup+0x554/0x6a8 include/linux/rhashtable.h:688 mr_mfc_find_any_parent+0xe8/0x20c net/ipv4/ipmr_base.c:83 ip_mr_forward+0x214/0xe10 net/ipv4/ipmr.c:1949 ipmr_cache_resolve net/ipv4/ipmr.c:1003 [inline] ipmr_mfc_add+0x1ea0/0x28a0 net/ipv4/ipmr.c:1262 ip_mroute_setsockopt+0xaf8/0xe94 net/ipv4/ipmr.c:1459 do_ip_setsockopt net/ipv4/ip_sockglue.c:947 [inline] ip_setsockopt+0x618/0x32cc net/ipv4/ip_sockglue.c:1430 raw_setsockopt+0x104/0x2b8 net/ipv4/raw.c:863 sock_common_setsockopt+0xb0/0xcc net/core/sock.c:3448 __sys_setsockopt+0x3a8/0x6b4 net/socket.c:2203 __do_sys_setsockopt net/socket.c:2214 [inline] __se_sys_setsockopt net/socket.c:2211 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2211 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 final repro crashed as (corrupted=false): ============================= WARNING: suspicious RCU usage 5.15.177-syzkaller #0 Not tainted ----------------------------- include/linux/rhashtable.h:594 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor254/4020: #0: ffff800016cb4b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 stack backtrace: CPU: 0 PID: 4020 Comm: syz-executor254 Not tainted 5.15.177-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x188/0x1e0 kernel/locking/lockdep.c:6571 __rhashtable_lookup include/linux/rhashtable.h:594 [inline] rhltable_lookup+0x6a0/0x6a8 include/linux/rhashtable.h:688 mr_mfc_find_any_parent+0xe8/0x20c net/ipv4/ipmr_base.c:83 ip_mr_forward+0x214/0xe10 net/ipv4/ipmr.c:1949 ipmr_cache_resolve net/ipv4/ipmr.c:1003 [inline] ipmr_mfc_add+0x1ea0/0x28a0 net/ipv4/ipmr.c:1262 ip_mroute_setsockopt+0xaf8/0xe94 net/ipv4/ipmr.c:1459 do_ip_setsockopt net/ipv4/ip_sockglue.c:947 [inline] ip_setsockopt+0x618/0x32cc net/ipv4/ip_sockglue.c:1430 raw_setsockopt+0x104/0x2b8 net/ipv4/raw.c:863 sock_common_setsockopt+0xb0/0xcc net/core/sock.c:3448 __sys_setsockopt+0x3a8/0x6b4 net/socket.c:2203 __do_sys_setsockopt net/socket.c:2214 [inline] __se_sys_setsockopt net/socket.c:2211 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2211 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ============================= WARNING: suspicious RCU usage 5.15.177-syzkaller #0 Not tainted ----------------------------- include/linux/rhashtable.h:369 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor254/4020: #0: ffff800016cb4b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 stack backtrace: CPU: 0 PID: 4020 Comm: syz-executor254 Not tainted 5.15.177-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x188/0x1e0 kernel/locking/lockdep.c:6571 rht_ptr_rcu include/linux/rhashtable.h:369 [inline] __rhashtable_lookup include/linux/rhashtable.h:599 [inline] rhltable_lookup+0x45c/0x6a8 include/linux/rhashtable.h:688 mr_mfc_find_any_parent+0xe8/0x20c net/ipv4/ipmr_base.c:83 ip_mr_forward+0x214/0xe10 net/ipv4/ipmr.c:1949 ipmr_cache_resolve net/ipv4/ipmr.c:1003 [inline] ipmr_mfc_add+0x1ea0/0x28a0 net/ipv4/ipmr.c:1262 ip_mroute_setsockopt+0xaf8/0xe94 net/ipv4/ipmr.c:1459 do_ip_setsockopt net/ipv4/ip_sockglue.c:947 [inline] ip_setsockopt+0x618/0x32cc net/ipv4/ip_sockglue.c:1430 raw_setsockopt+0x104/0x2b8 net/ipv4/raw.c:863 sock_common_setsockopt+0xb0/0xcc net/core/sock.c:3448 __sys_setsockopt+0x3a8/0x6b4 net/socket.c:2203 __do_sys_setsockopt net/socket.c:2214 [inline] __se_sys_setsockopt net/socket.c:2211 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2211 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ============================= WARNING: suspicious RCU usage 5.15.177-syzkaller #0 Not tainted ----------------------------- include/linux/rhashtable.h:614 suspicious rcu_dereference_check() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 1 lock held by syz-executor254/4020: #0: ffff800016cb4b68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:72 stack backtrace: CPU: 0 PID: 4020 Comm: syz-executor254 Not tainted 5.15.177-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x188/0x1e0 kernel/locking/lockdep.c:6571 __rhashtable_lookup include/linux/rhashtable.h:614 [inline] rhltable_lookup+0x554/0x6a8 include/linux/rhashtable.h:688 mr_mfc_find_any_parent+0xe8/0x20c net/ipv4/ipmr_base.c:83 ip_mr_forward+0x214/0xe10 net/ipv4/ipmr.c:1949 ipmr_cache_resolve net/ipv4/ipmr.c:1003 [inline] ipmr_mfc_add+0x1ea0/0x28a0 net/ipv4/ipmr.c:1262 ip_mroute_setsockopt+0xaf8/0xe94 net/ipv4/ipmr.c:1459 do_ip_setsockopt net/ipv4/ip_sockglue.c:947 [inline] ip_setsockopt+0x618/0x32cc net/ipv4/ip_sockglue.c:1430 raw_setsockopt+0x104/0x2b8 net/ipv4/raw.c:863 sock_common_setsockopt+0xb0/0xcc net/core/sock.c:3448 __sys_setsockopt+0x3a8/0x6b4 net/socket.c:2203 __do_sys_setsockopt net/socket.c:2214 [inline] __se_sys_setsockopt net/socket.c:2211 [inline] __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2211 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584