Extracting prog: 4m41.02638455s Minimizing prog: 56m20.430856539s Simplifying prog options: 7m23.305201643s Extracting C: 3m9.498431976s Simplifying C: 53m12.700754162s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 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}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)={'team0\x00', 0x0}) r2 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r2, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000400)=@newqdisc={0xa4, 0x24, 0xf0b, 0x0, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x8, 0x4], [0x0, 0x8]}}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0xcb2}]}]}]}}]}, 0xa4}}, 0x0) program crashed: INFO: rcu detected stall in worker_thread single: successfully extracted reproducer found reproducer with 4 syscalls minimizing guilty program 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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)) socket$netlink(0x10, 0x3, 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-ioctl$ifreq_SIOCGIFINDEX_team-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)={'team0\x00', 0x0}) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000400)=@newqdisc={0xa4, 0x24, 0xf0b, 0x0, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x8, 0x4], [0x0, 0x8]}}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0xcb2}]}]}]}}]}, 0xa4}}, 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-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: socket(0x11, 0x800000003, 0x0) r0 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r0, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000400)=@newqdisc={0xa4, 0x24, 0xf0b, 0x0, 0x0, {0x0, 0x0, 0x12, 0x0, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x8, 0x4], [0x0, 0x8]}}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0xcb2}]}]}]}}]}, 0xa4}}, 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}}): ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: ioctl$ifreq_SIOCGIFINDEX_team(0xffffffffffffffff, 0x8933, &(0x7f0000000600)={'team0\x00', 0x0}) r1 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000400)=@newqdisc={0xa4, 0x24, 0xf0b, 0x0, 0x0, {0x0, 0x0, 0x12, r0, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x8, 0x4], [0x0, 0x8]}}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0xcb2}]}]}]}}]}, 0xa4}}, 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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, 0x0) r1 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000400)=@newqdisc={0xa4, 0x24, 0xf0b, 0x0, 0x0, {0x0, 0x0, 0x12, 0x0, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x8, 0x4], [0x0, 0x8]}}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0xcb2}]}]}]}}]}, 0xa4}}, 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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)) r1 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, 0x0, 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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)) r1 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f00000007c0)={0x0, 0x0, 0x0}, 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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)) r1 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r1, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={0x0}}, 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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)={'team0\x00', 0x0}) r2 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r2, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000400)=@newqdisc={0x34, 0x24, 0xf0b, 0x0, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x4}}]}, 0x34}}, 0x0) program did not crash extracting C reproducer testing compiled C 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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in smp_call_function a never seen crash title: INFO: rcu detected stall in smp_call_function, ignore simplifying guilty program options testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)={'team0\x00', 0x0}) r2 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r2, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000400)=@newqdisc={0xa4, 0x24, 0xf0b, 0x0, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x8, 0x4], [0x0, 0x8]}}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0xcb2}]}]}]}}]}, 0xa4}}, 0x0) program crashed: INFO: rcu detected stall in worker_thread extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in worker_thread simplifying C reproducer testing compiled C program (duration=6m0s, {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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in corrupted a never seen crash title: INFO: rcu detected stall in corrupted, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true 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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in worker_thread testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in corrupted a never seen crash title: INFO: rcu detected stall in corrupted, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true 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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in worker_thread testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in corrupted a never seen crash title: INFO: rcu detected stall in corrupted, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true 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-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in corrupted a never seen crash title: INFO: rcu detected stall in corrupted, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in worker_thread testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in corrupted a never seen crash title: INFO: rcu detected stall in corrupted, ignore testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in worker_thread testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched program crashed: INFO: rcu detected stall in addrconf_rs_timer a never seen crash title: INFO: rcu detected stall in addrconf_rs_timer, ignore testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)={'team0\x00', 0x0}) r2 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r2, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000400)=@newqdisc={0xa4, 0x24, 0xf0b, 0x0, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x8, 0x4], [0x0, 0x8]}}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0xcb2}]}]}]}}]}, 0xa4}}, 0x0) program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)={'team0\x00', 0x0}) r2 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r2, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000400)=@newqdisc={0xa4, 0x24, 0xf0b, 0x0, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x8, 0x4], [0x0, 0x8]}}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0xcb2}]}]}]}}]}, 0xa4}}, 0x0) program crashed: INFO: rcu detected stall in worker_thread validation run: crashed=true testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$ifreq_SIOCGIFINDEX_team-socket$netlink-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x11, 0x800000003, 0x0) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000600)={'team0\x00', 0x0}) r2 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r2, &(0x7f00000007c0)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000400)=@newqdisc={0xa4, 0x24, 0xf0b, 0x0, 0x0, {0x0, 0x0, 0x12, r1, {}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x8, 0x4], [0x0, 0x8]}}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0xcb2}]}]}]}}]}, 0xa4}}, 0x0) program crashed: INFO: rcu detected stall in worker_thread validation run: crashed=true reproducing took 2h15m21.597683601s repro crashed as (corrupted=false): rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P1209/1:b..l rcu: (detected by 0, t=12100 jiffies, g=12197, q=767 ncpus=2) task:kworker/0:2 state:R running task stack:23144 pid:1209 tgid:1209 ppid:2 task_flags:0x4208060 flags:0x00004000 Workqueue: events_power_efficient gc_worker Call Trace: context_switch kernel/sched/core.c:5397 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6786 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7109 irqentry_exit+0x6f/0x90 kernel/entry/common.c:307 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:seqcount_lockdep_reader_access+0x17e/0x1c0 include/linux/seqlock.h:75 Code: f8 4d 85 e4 75 16 e8 21 03 22 f8 eb 15 e8 1a 03 22 f8 e8 45 63 cf 01 4d 85 e4 74 ea e8 0b 03 22 f8 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 66 43 c7 44 3e 09 00 00 43 c6 44 3e 0b 00 RSP: 0018:ffffc9000410f860 EFLAGS: 00000293 RAX: ffffffff899e25e5 RBX: 0000000000000000 RCX: ffff888027323c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000410f910 R08: ffffffff8fa1d6f7 R09: 1ffffffff1f43ade R10: dffffc0000000000 R11: fffffbfff1f43adf R12: 0000000000000200 R13: ffff8880272ecb18 R14: 1ffff92000821f0c R15: dffffc0000000000 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:344 [inline] gc_worker+0x308/0x1380 net/netfilter/nf_conntrack_core.c:1551 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 rcu: rcu_preempt kthread timer wakeup didn't happen for 6464 jiffies! g12197 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=7682 rcu: rcu_preempt kthread starved for 6465 jiffies! g12197 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:I stack:27128 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5397 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6786 __schedule_loop kernel/sched/core.c:6864 [inline] schedule+0x165/0x360 kernel/sched/core.c:6879 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 rcu: Stack dump where RCU GP kthread last ran: CPU: 0 UID: 0 PID: 5995 Comm: syz-executor Not tainted 6.16.0-rc6-syzkaller-00135-gcf074eca0065 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:unwind_get_return_address+0x3b/0x90 arch/x86/kernel/unwind_orc.c:369 Code: 00 00 fc ff df 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 4c 83 3b 00 74 3a 48 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 <74> 08 48 89 df e8 3b 91 af 00 48 8b 3b e8 93 a3 1a 00 85 c0 74 14 RSP: 0018:ffffc90003cce048 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc90003cce0b0 RCX: 207dca91c999f101 RDX: ffffc90003cce0f8 RSI: dffffc0000000000 RDI: ffffc90003cce068 RBP: ffffc90003cce0f0 R08: ffffc90003cce0f0 R09: 0000000000000000 R10: ffffc90003cce0b8 R11: fffff52000799c19 R12: ffff888030f2bc00 R13: ffff8880319c3f00 R14: dffffc0000000000 R15: 1ffff92000799c16 FS: 000055557cfc0500(0000) GS:ffff888125c23000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd703d4f19 CR3: 000000002f96a000 CR4: 00000000003526f0 Call Trace: arch_stack_walk+0xfc/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4359 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] ref_tracker_alloc+0x133/0x460 lib/ref_tracker.c:203 __netdev_tracker_alloc include/linux/netdevice.h:4341 [inline] netdev_hold include/linux/netdevice.h:4370 [inline] fib_check_nh_nongw net/ipv4/fib_semantics.c:1268 [inline] fib_check_nh+0xc46/0x1910 net/ipv4/fib_semantics.c:1288 fib_create_info+0x209d/0x3210 net/ipv4/fib_semantics.c:1508 fib_table_insert+0xc6/0x1b50 net/ipv4/fib_trie.c:1212 fib_magic+0x2c4/0x390 net/ipv4/fib_frontend.c:1133 fib_add_ifaddr+0x38d/0x5f0 net/ipv4/fib_frontend.c:1170 fib_netdev_event+0x382/0x490 net/ipv4/fib_frontend.c:1515 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2268 [inline] call_netdevice_notifiers net/core/dev.c:2282 [inline] __dev_notify_flags+0x18d/0x2e0 net/core/dev.c:-1 netif_change_flags+0xe8/0x1a0 net/core/dev.c:9526 do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3141 rtnl_changelink net/core/rtnetlink.c:3759 [inline] __rtnl_newlink net/core/rtnetlink.c:3918 [inline] rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4055 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x759/0x8e0 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:727 __sys_sendto+0x3bd/0x520 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 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: 0033:0x7fd51fb9083c Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b RSP: 002b:00007fff77d42d00 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fd5208e4620 RCX: 00007fd51fb9083c RDX: 000000000000002c RSI: 00007fd5208e4670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007fff77d42d54 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fd5208e4670 R15: 0000000000000000 final repro crashed as (corrupted=false): rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P1209/1:b..l rcu: (detected by 0, t=12100 jiffies, g=12197, q=767 ncpus=2) task:kworker/0:2 state:R running task stack:23144 pid:1209 tgid:1209 ppid:2 task_flags:0x4208060 flags:0x00004000 Workqueue: events_power_efficient gc_worker Call Trace: context_switch kernel/sched/core.c:5397 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6786 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7109 irqentry_exit+0x6f/0x90 kernel/entry/common.c:307 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:seqcount_lockdep_reader_access+0x17e/0x1c0 include/linux/seqlock.h:75 Code: f8 4d 85 e4 75 16 e8 21 03 22 f8 eb 15 e8 1a 03 22 f8 e8 45 63 cf 01 4d 85 e4 74 ea e8 0b 03 22 f8 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 66 43 c7 44 3e 09 00 00 43 c6 44 3e 0b 00 RSP: 0018:ffffc9000410f860 EFLAGS: 00000293 RAX: ffffffff899e25e5 RBX: 0000000000000000 RCX: ffff888027323c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000410f910 R08: ffffffff8fa1d6f7 R09: 1ffffffff1f43ade R10: dffffc0000000000 R11: fffffbfff1f43adf R12: 0000000000000200 R13: ffff8880272ecb18 R14: 1ffff92000821f0c R15: dffffc0000000000 nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:344 [inline] gc_worker+0x308/0x1380 net/netfilter/nf_conntrack_core.c:1551 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 rcu: rcu_preempt kthread timer wakeup didn't happen for 6464 jiffies! g12197 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=7682 rcu: rcu_preempt kthread starved for 6465 jiffies! g12197 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:I stack:27128 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5397 [inline] __schedule+0x16f5/0x4d00 kernel/sched/core.c:6786 __schedule_loop kernel/sched/core.c:6864 [inline] schedule+0x165/0x360 kernel/sched/core.c:6879 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 rcu: Stack dump where RCU GP kthread last ran: CPU: 0 UID: 0 PID: 5995 Comm: syz-executor Not tainted 6.16.0-rc6-syzkaller-00135-gcf074eca0065 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:unwind_get_return_address+0x3b/0x90 arch/x86/kernel/unwind_orc.c:369 Code: 00 00 fc ff df 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 4c 83 3b 00 74 3a 48 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 <74> 08 48 89 df e8 3b 91 af 00 48 8b 3b e8 93 a3 1a 00 85 c0 74 14 RSP: 0018:ffffc90003cce048 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc90003cce0b0 RCX: 207dca91c999f101 RDX: ffffc90003cce0f8 RSI: dffffc0000000000 RDI: ffffc90003cce068 RBP: ffffc90003cce0f0 R08: ffffc90003cce0f0 R09: 0000000000000000 R10: ffffc90003cce0b8 R11: fffff52000799c19 R12: ffff888030f2bc00 R13: ffff8880319c3f00 R14: dffffc0000000000 R15: 1ffff92000799c16 FS: 000055557cfc0500(0000) GS:ffff888125c23000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd703d4f19 CR3: 000000002f96a000 CR4: 00000000003526f0 Call Trace: arch_stack_walk+0xfc/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_noprof+0x230/0x3d0 mm/slub.c:4359 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] ref_tracker_alloc+0x133/0x460 lib/ref_tracker.c:203 __netdev_tracker_alloc include/linux/netdevice.h:4341 [inline] netdev_hold include/linux/netdevice.h:4370 [inline] fib_check_nh_nongw net/ipv4/fib_semantics.c:1268 [inline] fib_check_nh+0xc46/0x1910 net/ipv4/fib_semantics.c:1288 fib_create_info+0x209d/0x3210 net/ipv4/fib_semantics.c:1508 fib_table_insert+0xc6/0x1b50 net/ipv4/fib_trie.c:1212 fib_magic+0x2c4/0x390 net/ipv4/fib_frontend.c:1133 fib_add_ifaddr+0x38d/0x5f0 net/ipv4/fib_frontend.c:1170 fib_netdev_event+0x382/0x490 net/ipv4/fib_frontend.c:1515 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2268 [inline] call_netdevice_notifiers net/core/dev.c:2282 [inline] __dev_notify_flags+0x18d/0x2e0 net/core/dev.c:-1 netif_change_flags+0xe8/0x1a0 net/core/dev.c:9526 do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3141 rtnl_changelink net/core/rtnetlink.c:3759 [inline] __rtnl_newlink net/core/rtnetlink.c:3918 [inline] rtnl_newlink+0x160b/0x1c70 net/core/rtnetlink.c:4055 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6944 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x759/0x8e0 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:727 __sys_sendto+0x3bd/0x520 net/socket.c:2180 __do_sys_sendto net/socket.c:2187 [inline] __se_sys_sendto net/socket.c:2183 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2183 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: 0033:0x7fd51fb9083c Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b RSP: 002b:00007fff77d42d00 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fd5208e4620 RCX: 00007fd51fb9083c RDX: 000000000000002c RSI: 00007fd5208e4670 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007fff77d42d54 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000000 R14: 00007fd5208e4670 R15: 0000000000000000