Extracting prog: 6m52.136907333s Minimizing prog: 1h3m36.990011898s Simplifying prog options: 8m15.631049383s Extracting C: 3m42.85782747s Simplifying C: 1h6m8.671028989s 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-mmap detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x138, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, r1, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0xfc, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x2, 0x4, 0x7, 0x4, 0x0, 0x6, 0x3, 0x1}}, {0x6, 0x2, [0x2]}}, {{0x1c, 0x1, {0x1, 0x7, 0x1, 0x7f, 0x1, 0x5, 0xcfc}}, {0x4}}, {{0x1c, 0x1, {0x3b, 0xb, 0xa1, 0x3, 0x2, 0x3, 0x9}}, {0x4}}, {{0x1c, 0x1, {0x5, 0x3, 0x8, 0x7706, 0x0, 0x2, 0xd}}, {0x4}}, {{0x1c, 0x1, {0x80, 0x83, 0x4, 0x1, 0x0, 0xeb, 0x445}}, {0x4}}, {{0x1c, 0x1, {0x6, 0x8, 0x1, 0x3, 0x1, 0x7, 0x0, 0x7}}, {0x12, 0x2, [0xa, 0x42b, 0x9, 0x5, 0x5, 0x40, 0xa]}}, {{0x1c, 0x1, {0x1, 0xe, 0x800, 0x7623, 0x2, 0xfffffc00, 0x401, 0x1}}, {0x6, 0x2, [0x8]}}]}]}, 0x138}}, 0x0) mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x300000c, 0x204031, 0xffffffffffffffff, 0xffffd000) program crashed: INFO: task hung in worker_attach_to_pool single: successfully extracted reproducer found reproducer with 4 syscalls minimizing guilty program testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x138, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, r1, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0xfc, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x2, 0x4, 0x7, 0x4, 0x0, 0x6, 0x3, 0x1}}, {0x6, 0x2, [0x2]}}, {{0x1c, 0x1, {0x1, 0x7, 0x1, 0x7f, 0x1, 0x5, 0xcfc}}, {0x4}}, {{0x1c, 0x1, {0x3b, 0xb, 0xa1, 0x3, 0x2, 0x3, 0x9}}, {0x4}}, {{0x1c, 0x1, {0x5, 0x3, 0x8, 0x7706, 0x0, 0x2, 0xd}}, {0x4}}, {{0x1c, 0x1, {0x80, 0x83, 0x4, 0x1, 0x0, 0xeb, 0x445}}, {0x4}}, {{0x1c, 0x1, {0x6, 0x8, 0x1, 0x3, 0x1, 0x7, 0x0, 0x7}}, {0x12, 0x2, [0xa, 0x42b, 0x9, 0x5, 0x5, 0x40, 0xa]}}, {{0x1c, 0x1, {0x1, 0xe, 0x800, 0x7623, 0x2, 0xfffffc00, 0x401, 0x1}}, {0x6, 0x2, [0x8]}}]}]}, 0x138}}, 0x0) program crashed: INFO: task hung in worker_attach_to_pool testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00'}) program did not crash testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x138, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, 0x0, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0xfc, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x2, 0x4, 0x7, 0x4, 0x0, 0x6, 0x3, 0x1}}, {0x6, 0x2, [0x2]}}, {{0x1c, 0x1, {0x1, 0x7, 0x1, 0x7f, 0x1, 0x5, 0xcfc}}, {0x4}}, {{0x1c, 0x1, {0x3b, 0xb, 0xa1, 0x3, 0x2, 0x3, 0x9}}, {0x4}}, {{0x1c, 0x1, {0x5, 0x3, 0x8, 0x7706, 0x0, 0x2, 0xd}}, {0x4}}, {{0x1c, 0x1, {0x80, 0x83, 0x4, 0x1, 0x0, 0xeb, 0x445}}, {0x4}}, {{0x1c, 0x1, {0x6, 0x8, 0x1, 0x3, 0x1, 0x7, 0x0, 0x7}}, {0x12, 0x2, [0xa, 0x42b, 0x9, 0x5, 0x5, 0x40, 0xa]}}, {{0x1c, 0x1, {0x1, 0xe, 0x800, 0x7623, 0x2, 0xfffffc00, 0x401, 0x1}}, {0x6, 0x2, [0x8]}}]}]}, 0x138}}, 0x0) program crashed: lost connection to test machine suppressed program crash: lost connection to test machine testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000240)={'lo\x00', 0x0}) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x138, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, r0, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0xfc, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x2, 0x4, 0x7, 0x4, 0x0, 0x6, 0x3, 0x1}}, {0x6, 0x2, [0x2]}}, {{0x1c, 0x1, {0x1, 0x7, 0x1, 0x7f, 0x1, 0x5, 0xcfc}}, {0x4}}, {{0x1c, 0x1, {0x3b, 0xb, 0xa1, 0x3, 0x2, 0x3, 0x9}}, {0x4}}, {{0x1c, 0x1, {0x5, 0x3, 0x8, 0x7706, 0x0, 0x2, 0xd}}, {0x4}}, {{0x1c, 0x1, {0x80, 0x83, 0x4, 0x1, 0x0, 0xeb, 0x445}}, {0x4}}, {{0x1c, 0x1, {0x6, 0x8, 0x1, 0x3, 0x1, 0x7, 0x0, 0x7}}, {0x12, 0x2, [0xa, 0x42b, 0x9, 0x5, 0x5, 0x40, 0xa]}}, {{0x1c, 0x1, {0x1, 0xe, 0x800, 0x7623, 0x2, 0xfffffc00, 0x401, 0x1}}, {0x6, 0x2, [0x8]}}]}]}, 0x138}}, 0x0) program did not crash testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, 0x0) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x138, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, 0x0, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0xfc, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x2, 0x4, 0x7, 0x4, 0x0, 0x6, 0x3, 0x1}}, {0x6, 0x2, [0x2]}}, {{0x1c, 0x1, {0x1, 0x7, 0x1, 0x7f, 0x1, 0x5, 0xcfc}}, {0x4}}, {{0x1c, 0x1, {0x3b, 0xb, 0xa1, 0x3, 0x2, 0x3, 0x9}}, {0x4}}, {{0x1c, 0x1, {0x5, 0x3, 0x8, 0x7706, 0x0, 0x2, 0xd}}, {0x4}}, {{0x1c, 0x1, {0x80, 0x83, 0x4, 0x1, 0x0, 0xeb, 0x445}}, {0x4}}, {{0x1c, 0x1, {0x6, 0x8, 0x1, 0x3, 0x1, 0x7, 0x0, 0x7}}, {0x12, 0x2, [0xa, 0x42b, 0x9, 0x5, 0x5, 0x40, 0xa]}}, {{0x1c, 0x1, {0x1, 0xe, 0x800, 0x7623, 0x2, 0xfffffc00, 0x401, 0x1}}, {0x6, 0x2, [0x8]}}]}]}, 0x138}}, 0x0) program did not crash testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00'}) sendmsg$nl_route_sched(r0, 0x0, 0x0) program did not crash testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00'}) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, 0x0}, 0x0) program did not crash testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00'}) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={0x0}}, 0x0) program did not crash testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x40, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, r1, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0x4}]}, 0x40}}, 0x0) program did not crash testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x128, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, r1, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0xec, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x2, 0x4, 0x7, 0x4, 0x0, 0x6, 0x3, 0x1}}, {0x6, 0x2, [0x2]}}, {{0x1c, 0x1, {0x1, 0x7, 0x1, 0x7f, 0x1, 0x5, 0xcfc}}, {0x4}}, {{0x1c, 0x1, {0x3b, 0xb, 0xa1, 0x3, 0x2, 0x3, 0x9}}, {0x4}}, {{0x1c, 0x1, {0x5, 0x3, 0x8, 0x7706, 0x0, 0x2, 0xd}}, {0x4}}, {{0x1c, 0x1, {0x80, 0x83, 0x4, 0x1, 0x0, 0xeb, 0x445}}, {0x4}}, {{0x1c, 0x1, {0x6, 0x8, 0x1, 0x3, 0x1, 0x7}}, {0x4}}, {{0x1c, 0x1, {0x1, 0xe, 0x800, 0x7623, 0x2, 0xfffffc00, 0x401, 0x1}}, {0x6, 0x2, [0x8]}}]}]}, 0x128}}, 0x0) program crashed: INFO: task hung in wg_netns_pre_exit extracting C reproducer testing compiled C program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program did not crash simplifying guilty program options testing program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x128, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, r1, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0xec, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x2, 0x4, 0x7, 0x4, 0x0, 0x6, 0x3, 0x1}}, {0x6, 0x2, [0x2]}}, {{0x1c, 0x1, {0x1, 0x7, 0x1, 0x7f, 0x1, 0x5, 0xcfc}}, {0x4}}, {{0x1c, 0x1, {0x3b, 0xb, 0xa1, 0x3, 0x2, 0x3, 0x9}}, {0x4}}, {{0x1c, 0x1, {0x5, 0x3, 0x8, 0x7706, 0x0, 0x2, 0xd}}, {0x4}}, {{0x1c, 0x1, {0x80, 0x83, 0x4, 0x1, 0x0, 0xeb, 0x445}}, {0x4}}, {{0x1c, 0x1, {0x6, 0x8, 0x1, 0x3, 0x1, 0x7}}, {0x4}}, {{0x1c, 0x1, {0x1, 0xe, 0x800, 0x7623, 0x2, 0xfffffc00, 0x401, 0x1}}, {0x6, 0x2, [0x8]}}]}]}, 0x128}}, 0x0) program crashed: INFO: task hung in worker_attach_to_pool extracting C reproducer testing compiled C program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in worker_attach_to_pool simplifying C reproducer testing compiled C program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$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=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$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=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in corrupted a never seen crash title: INFO: task hung in corrupted, ignore testing compiled C program (duration=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$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=6m59.225211955s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in corrupted a never seen crash title: INFO: task hung in corrupted, ignore testing compiled C program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in worker_attach_to_pool testing compiled C program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in corrupted a never seen crash title: INFO: task hung in corrupted, ignore testing compiled C program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in worker_attach_to_pool testing compiled C program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program did not crash testing compiled C program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in rescuer_thread a never seen crash title: INFO: task hung in rescuer_thread, ignore testing compiled C program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in worker_attach_to_pool testing compiled C program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$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=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in rescuer_thread a never seen crash title: INFO: task hung in rescuer_thread, ignore testing compiled C program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in worker_attach_to_pool testing compiled C program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program did not crash testing program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x128, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, r1, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0xec, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x2, 0x4, 0x7, 0x4, 0x0, 0x6, 0x3, 0x1}}, {0x6, 0x2, [0x2]}}, {{0x1c, 0x1, {0x1, 0x7, 0x1, 0x7f, 0x1, 0x5, 0xcfc}}, {0x4}}, {{0x1c, 0x1, {0x3b, 0xb, 0xa1, 0x3, 0x2, 0x3, 0x9}}, {0x4}}, {{0x1c, 0x1, {0x5, 0x3, 0x8, 0x7706, 0x0, 0x2, 0xd}}, {0x4}}, {{0x1c, 0x1, {0x80, 0x83, 0x4, 0x1, 0x0, 0xeb, 0x445}}, {0x4}}, {{0x1c, 0x1, {0x6, 0x8, 0x1, 0x3, 0x1, 0x7}}, {0x4}}, {{0x1c, 0x1, {0x1, 0xe, 0x800, 0x7623, 0x2, 0xfffffc00, 0x401, 0x1}}, {0x6, 0x2, [0x8]}}]}]}, 0x128}}, 0x0) program crashed: INFO: task hung in worker_attach_to_pool validation run: crashed=true testing program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x128, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, r1, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0xec, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x2, 0x4, 0x7, 0x4, 0x0, 0x6, 0x3, 0x1}}, {0x6, 0x2, [0x2]}}, {{0x1c, 0x1, {0x1, 0x7, 0x1, 0x7f, 0x1, 0x5, 0xcfc}}, {0x4}}, {{0x1c, 0x1, {0x3b, 0xb, 0xa1, 0x3, 0x2, 0x3, 0x9}}, {0x4}}, {{0x1c, 0x1, {0x5, 0x3, 0x8, 0x7706, 0x0, 0x2, 0xd}}, {0x4}}, {{0x1c, 0x1, {0x80, 0x83, 0x4, 0x1, 0x0, 0xeb, 0x445}}, {0x4}}, {{0x1c, 0x1, {0x6, 0x8, 0x1, 0x3, 0x1, 0x7}}, {0x4}}, {{0x1c, 0x1, {0x1, 0xe, 0x800, 0x7623, 0x2, 0xfffffc00, 0x401, 0x1}}, {0x6, 0x2, [0x8]}}]}]}, 0x128}}, 0x0) program crashed: INFO: task hung in worker_attach_to_pool validation run: crashed=true testing program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000240)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000280)=@newqdisc={0x128, 0x24, 0xd0f, 0x0, 0x0, {0x60, 0x0, 0x0, r1, {}, {0xffff, 0xffff}, {0x0, 0xfff2}}, [@qdisc_kind_options=@q_cake={{0x9}, {0xc, 0x2, [@TCA_CAKE_FWMARK={0x8, 0x12, 0xffffffff}]}}, @TCA_STAB={0xec, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x2, 0x4, 0x7, 0x4, 0x0, 0x6, 0x3, 0x1}}, {0x6, 0x2, [0x2]}}, {{0x1c, 0x1, {0x1, 0x7, 0x1, 0x7f, 0x1, 0x5, 0xcfc}}, {0x4}}, {{0x1c, 0x1, {0x3b, 0xb, 0xa1, 0x3, 0x2, 0x3, 0x9}}, {0x4}}, {{0x1c, 0x1, {0x5, 0x3, 0x8, 0x7706, 0x0, 0x2, 0xd}}, {0x4}}, {{0x1c, 0x1, {0x80, 0x83, 0x4, 0x1, 0x0, 0xeb, 0x445}}, {0x4}}, {{0x1c, 0x1, {0x6, 0x8, 0x1, 0x3, 0x1, 0x7}}, {0x4}}, {{0x1c, 0x1, {0x1, 0xe, 0x800, 0x7623, 0x2, 0xfffffc00, 0x401, 0x1}}, {0x6, 0x2, [0x8]}}]}]}, 0x128}}, 0x0) program crashed: INFO: rcu detected stall in corrupted validation run: crashed=true reproducing took 2h39m58.327529478s repro crashed as (corrupted=true): rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: (detected by 1, t=10502 jiffies, g=14885, q=2273 ncpus=2) rcu: All QSes seen, last rcu_preempt kthread activity 2747 (4294981925-4294979178), jiffies_till_next_fqs=1, root ->qsmask 0x0 rcu: rcu_preempt kthread starved for 2747 jiffies! g14885 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:27728 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0x1585/0x5340 kernel/sched/core.c:6907 __schedule_loop kernel/sched/core.c:6989 [inline] schedule+0x164/0x360 kernel/sched/core.c:7004 schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x312/0x11d0 kernel/rcu/tree.c:2095 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6075 Comm: kworker/0:6 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Workqueue: wg-kex-wg0 wg_packet_handshake_receive_worker RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63 Code: 7e 6d 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 43 3d 1c 00 fb f4 7c ea 02 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 RSP: 0018:ffffc9000239efa8 EFLAGS: 000002d3 RAX: ffffffff8175ac2a RBX: 0000000000000003 RCX: ffff88802e398000 RDX: 0000000000000000 RSI: ffffffff8def1ab4 RDI: ffffffff8c27a480 RBP: 0000000000000003 R08: ffffffff901175b7 R09: 1ffffffff2022eb6 R10: dffffc0000000000 R11: fffffbfff2022eb7 R12: 0000000000000200 R13: 0000000000000000 R14: ffff88807e120158 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125466000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd954e16088 CR3: 000000000e54c000 CR4: 00000000003526f0 Call Trace: arch_safe_halt arch/x86/include/asm/paravirt.h:73 [inline] kvm_wait+0x10f/0x150 arch/x86/kernel/kvm.c:1101 pv_wait arch/x86/include/asm/paravirt-spinlock.h:83 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:466 [inline] __pv_queued_spin_lock_slowpath+0x74c/0xbc0 kernel/locking/qspinlock.c:325 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt-spinlock.h:35 [inline] queued_spin_lock_slowpath arch/x86/include/asm/paravirt-spinlock.h:66 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x26c/0x2f0 kernel/locking/spinlock_debug.c:116 spin_lock include/linux/spinlock.h:341 [inline] __dev_xmit_skb net/core/dev.c:4224 [inline] __dev_queue_xmit+0xbe7/0x38a0 net/core/dev.c:4802 NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip6_output+0x340/0x550 net/ipv6/ip6_output.c:246 ip6tunnel_xmit include/net/ip6_tunnel.h:162 [inline] udp_tunnel6_xmit_skb+0x68f/0xb00 net/ipv6/ip6_udp_tunnel.c:112 send6+0x5f3/0x940 drivers/net/wireguard/socket.c:152 wg_socket_send_skb_to_peer+0x111/0x1d0 drivers/net/wireguard/socket.c:178 wg_packet_send_handshake_response+0x1b4/0x310 drivers/net/wireguard/send.c:103 wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline] wg_packet_handshake_receive_worker+0x6a9/0x10c0 drivers/net/wireguard/receive.c:213 process_one_work kernel/workqueue.c:3275 [inline] process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358 worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439 kthread+0x388/0x470 kernel/kthread.c:467 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 report is corrupted, running repro again testing compiled C program (duration=6m59.225211955s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: INFO: task hung in ret_from_fork final repro crashed as (corrupted=false): INFO: task kworker/1:8:5970 blocked for more than 159 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:8 state:D stack:30744 pid:5970 tgid:5970 ppid:2 task_flags:0x4208040 flags:0x00080000 Call Trace: context_switch kernel/sched/core.c:5295 [inline] __schedule+0x1585/0x5340 kernel/sched/core.c:6907 __schedule_loop kernel/sched/core.c:6989 [inline] schedule+0x164/0x360 kernel/sched/core.c:7004 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7061 kthread+0x260/0x470 kernel/kthread.c:451 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Showing all locks held in the system: 2 locks held by kworker/0:0/9: 1 lock held by kworker/0:1/10: #0: ffffffff8e5fec68 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x2e/0x3a0 kernel/workqueue.c:2691 2 locks held by kworker/u8:0/12: 2 locks held by kworker/u8:1/13: 1 lock held by kworker/R-mm_pe/14: #0: ffffffff8e5fec68 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_detach_from_pool kernel/workqueue.c:2749 [inline] #0: ffffffff8e5fec68 (wq_pool_attach_mutex){+.+.}-{4:4}, at: rescuer_thread+0xc4a/0x1120 kernel/workqueue.c:3610 3 locks held by kworker/1:0/24: #0: ffff88813fe0f548 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3250 [inline] #0: ffff88813fe0f548 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 kernel/workqueue.c:3358 #1: ffffc900001e7c40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3251 [inline] #1: ffffc900001e7c40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 kernel/workqueue.c:3358 #2: ffff88807c222240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x202/0x3d0 drivers/net/netdevsim/fib.c:1490 1 lock held by khungtaskd/30: #0: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:312 [inline] #0: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:850 [inline] #0: ffffffff8e7602e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775 8 locks held by kworker/u8:2/35: 3 locks held by kworker/1:1/42: 3 locks held by kworker/u8:3/49: #0: ffff88813fe4c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3250 [inline] #0: ffff88813fe4c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 kernel/workqueue.c:3358 #1: ffffc90000b97c40 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3251 [inline] #1: ffffc90000b97c40 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 kernel/workqueue.c:3358 #2: ffffffff8e5fec68 (wq_pool_attach_mutex){+.+.}-{4:4}, at: idle_cull_fn+0xd2/0x740 kernel/workqueue.c:2973 2 locks held by kworker/u8:4/77: 3 locks held by kworker/u8:5/86: #0: ffff88813fe4c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3250 [inline] #0: ffff88813fe4c148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 kernel/workqueue.c:3358 #1: ffffc900025dfc40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3251 [inline] #1: ffffc900025dfc40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 kernel/workqueue.c:3358 #2: ffffffff8fbcb888 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:313 2 locks held by kworker/u8:6/146: 2 locks held by kworker/0:2/796: 2 locks held by kworker/u8:7/1116: 1 lock held by kworker/u8:8/1147: #0: ffffffff8e5fec68 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x2e/0x3a0 kernel/workqueue.c:2691 2 locks held by kworker/u8:9/1168: 1 lock held by kworker/1:2/1997: #0: ffffffff8e5fec68 (wq_pool_attach_mutex){+.+.}-{4:4}, at: worker_attach_to_pool+0x2e/0x3a0 kernel/workqueue.c:2691 3 locks held by kworker/u8:10/2990: 2 locks held by getty/5581: #0: ffff888036c110a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0 drivers/tty/n_tty.c:2211 3 locks held by kworker/1:3/5810: 2 locks held by syz-executor210/5855: #0: ffffffff8fbcb888 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff8fbcb888 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline] #0: ffffffff8fbcb888 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8a1/0x1be0 net/core/rtnetlink.c:4071 #1: ffff88806d1a5528 (&wg->device_update_lock){+.+.}-{4:4}, at: wg_open+0x227/0x420 drivers/net/wireguard/device.c:50 1 lock held by syz-executor210/5856: #0: ffffffff8fbcb888 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline] #0: ffffffff8fbcb888 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x722/0xbe0 net/core/rtnetlink.c:6964 3 locks held by kworker/1:4/5865: 7 locks held by kworker/u9:3/5869: #0: ffff88807a26f948 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3250 [inline] #0: ffff88807a26f948 ((wq_completion)hci2){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 kernel/workqueue.c:3358 #1: ffffc90003ba7c40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3251 [inline] #1: ffffc90003ba7c40 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 kernel/workqueue.c:3358 #2: ffff888076408ec0 (&hdev->req_lock){+.+.}-{4:4}, at: hci_cmd_sync_work+0x1d3/0x400 net/bluetooth/hci_sync.c:331 #3: ffff8880764080c0 (&hdev->lock){+.+.}-{4:4}, at: hci_abort_conn_sync+0xa6f/0x1190 net/bluetooth/hci_sync.c:5734 #4: ffffffff8fd57f28 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:2136 [inline] #4: ffffffff8fd57f28 (hci_cb_list_lock){+.+.}-{4:4}, at: hci_conn_failed+0x165/0x340 net/bluetooth/hci_conn.c:1342 #5: ffff888057b3caf8 (&conn->lock#2){+.+.}-{4:4}, at: l2cap_conn_del+0x7b/0x5c0 net/bluetooth/l2cap_core.c:1755 #6: ffffffff8e766578 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline] #6: ffffffff8e766578 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x38d/0x770 kernel/rcu/tree_exp.h:961 5 locks held by kworker/u9:4/5870: #0: ffff88807c3fa148 ((wq_completion)hci4){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3250 [inline] #0: ffff88807c3fa148 ((wq_completion)hci4){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 kernel/workqueue.c:3358