Extracting prog: 6m14.61504217s Minimizing prog: 1h39m12.094250535s Simplifying prog options: 13m53.600694865s Extracting C: 4m14.013273758s Simplifying C: 22m12.666018587s extracting reproducer from 1 programs testing a last program of every proc 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r4, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash single: failed to extract reproducer 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r4, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program crashed: BUG: soft lockup in tc_modify_qdisc single: successfully extracted reproducer found reproducer with 7 syscalls minimizing guilty program testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00'}) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, 0x0, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r3, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: socket$nl_route(0x10, 0x3, 0x0) r0 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000040)={'lo\x00'}) r1 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r1, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) socket$inet6_udp(0xa, 0x2, 0x0) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, 0x0, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r1 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r1, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r2, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r1, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r2 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r2, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r3, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r1, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r2 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r2, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r3, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, 0x0) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, 0x0, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r2 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r2, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r3, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00'}) sendmsg$nl_route_sched(r0, 0x0, 0x0) r2 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r2, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r3, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00'}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, 0x0}, 0x0) r2 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r2, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r3, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00'}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={0x0}}, 0x0) r2 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r2, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r3, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, 0x0) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, 0x0, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00'}) sendmsg$nl_route_sched(r3, 0x0, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00'}) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00'}) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={0x0}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program did not crash extracting C reproducer testing compiled C program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-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 simplifying guilty program options testing program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r4, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing program (duration=6m34.420944492s, {Threaded:true 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r4, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program crashed: BUG: soft lockup in tc_modify_qdisc extracting C reproducer testing compiled C program (duration=6m34.420944492s, {Threaded:true 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: BUG: soft lockup in tc_modify_qdisc simplifying C reproducer testing compiled C program (duration=6m34.420944492s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: BUG: soft lockup in tc_modify_qdisc testing compiled C program (duration=6m34.420944492s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: BUG: soft lockup in tc_modify_qdisc testing compiled C program (duration=6m34.420944492s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: BUG: soft lockup in tc_modify_qdisc testing compiled C program (duration=6m34.420944492s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched program crashed: BUG: soft lockup in tc_modify_qdisc testing compiled C program (duration=6m34.420944492s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-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 program (duration=6m34.420944492s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r4, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program crashed: no output from test machine validation run: crashed=true testing program (duration=6m34.420944492s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r4, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program crashed: no output from test machine validation run: crashed=true testing program (duration=6m34.420944492s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$inet6_udp-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched detailed listing: executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000040)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000580)={&(0x7f00000005c0)=@newqdisc={0x30, 0x24, 0x4ee4e6a52ff56541, 0x0, 0xffffffff, {0x0, 0x0, 0x0, r2, {0x0, 0x5}, {0xfff1, 0xffff}, {0xc}}, [@qdisc_kind_options=@q_ingress={0xc}]}, 0x30}}, 0x0) r3 = socket(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000000)={'lo\x00', 0x0}) sendmsg$nl_route_sched(r3, &(0x7f0000000740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000100)=@newqdisc={0x5c, 0x24, 0xd0f, 0x3, 0x0, {0x60, 0x0, 0x0, r4, {0x0, 0xe}, {0xfff3, 0xffff}, {0xc, 0x3}}, [@qdisc_kind_options=@q_fq_codel={{0xd}, {0x4}}, @TCA_STAB={0x24, 0x8, 0x0, 0x1, [{{0x1c, 0x1, {0x4, 0x2, 0x6, 0x77dd, 0x2, 0x7, 0x9}}, {0x4}}]}]}, 0x5c}, 0x1, 0x0, 0x0, 0x4004854}, 0x8840) program crashed: BUG: soft lockup in tc_modify_qdisc validation run: crashed=true reproducing took 2h42m44.41143819s repro crashed as (corrupted=false): RBP: 00007efd85a32c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007efd85c15fac R14: 00007efd85c15fa0 R15: 00007efd85c15fa0 watchdog: BUG: soft lockup - CPU#1 stuck for 287s! [syz.2.17:363] Modules linked in: CPU: 1 PID: 363 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline] RIP: 0010:write_comp_data kernel/kcov.c:245 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x30/0x90 kernel/kcov.c:313 Code: 45 08 65 48 8b 15 90 fa 90 7e 65 8b 0d 91 fa 90 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 6c 0b 00 00 00 74 52 <8b> 8a 48 0b 00 00 83 f9 03 75 47 48 8b 8a 50 0b 00 00 44 8b 8a 4c RSP: 0018:ffffc900009a6e38 EFLAGS: 00000246 RAX: ffffffff8409a297 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff888113d49440 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900009a6e38 R08: ffff888113d49440 R09: 0000000000000002 R10: 00000000ffffffff R11: 0000000000000000 R12: 00000000fffffff1 R13: ffff88812056a000 R14: ffff888120568400 R15: ffff88812056a040 FS: 000055555bee7500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efd85872140 CR3: 0000000121960000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: qdisc_tree_reduce_backlog+0x127/0x360 net/sched/sch_api.c:790 fq_codel_change+0xb3f/0x1090 net/sched/sch_fq_codel.c:440 fq_codel_init+0x384/0xa90 net/sched/sch_fq_codel.c:477 qdisc_create+0x895/0x1180 net/sched/sch_api.c:1306 tc_modify_qdisc+0x900/0x19d0 net/sched/sch_api.c:-1 rtnetlink_rcv_msg+0xb3b/0xe00 net/core/rtnetlink.c:6150 netlink_rcv_skb+0x20f/0x460 net/netlink/af_netlink.c:2521 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6168 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x8ab/0xa30 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x8b9/0xbd0 net/netlink/af_netlink.c:1873 sock_sendmsg_nosec net/socket.c:716 [inline] __sock_sendmsg net/socket.c:728 [inline] ____sys_sendmsg+0x5cc/0x990 net/socket.c:2508 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2562 __sys_sendmsg net/socket.c:2591 [inline] __do_sys_sendmsg net/socket.c:2600 [inline] __se_sys_sendmsg net/socket.c:2598 [inline] __x64_sys_sendmsg+0x205/0x2d0 net/socket.c:2598 x64_sys_call+0x171/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7efd8599c819 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd71423928 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007efd85c15fa0 RCX: 00007efd8599c819 RDX: 0000000000008840 RSI: 0000200000000740 RDI: 0000000000000005 RBP: 00007efd85a32c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007efd85c15fac R14: 00007efd85c15fa0 R15: 00007efd85c15fa0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 367 Comm: kworker/u4:5 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x60 kernel/kcov.c:215 Code: 8b 3d fc 4c 21 06 48 89 de e8 e4 9b 44 00 5b 5d c3 00 90 90 90 90 90 90 90 90 90 90 90 b8 0c 67 40 a5 55 48 89 e5 48 8b 45 08 <65> 48 8b 0d b0 fe 90 7e 65 8b 15 b1 fe 90 7e 81 e2 00 01 ff 00 74 RSP: 0018:ffffc900009e7830 EFLAGS: 00000202 RAX: ffffffff8167ff39 RBX: dffffc0000000000 RCX: ffff888114c9bcc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900009e7830 R08: ffff8881f6e390d7 R09: 1ffff1103edc721a R10: 0000000000000000 R11: ffffffff8134c6c0 R12: 1ffff1103edc7218 R13: 1ffff1103ede78a5 R14: 0000000000000001 R15: ffff8881f6f3c528 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00001357f4fe9010 CR3: 000000000700f000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: csd_lock_wait kernel/smp.c:453 [inline] smp_call_function_many_cond+0x8a9/0x980 kernel/smp.c:998 on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1165 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1574 [inline] text_poke_bp_batch+0x1cf/0x600 arch/x86/kernel/alternative.c:1774 text_poke_flush arch/x86/kernel/alternative.c:1965 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1972 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146 __jump_label_update+0x37c/0x3a0 kernel/jump_label.c:451 jump_label_update+0x39b/0x450 kernel/jump_label.c:797 static_key_disable_cpuslocked+0xc9/0x1a0 kernel/jump_label.c:203 static_key_disable+0x1a/0x30 kernel/jump_label.c:211 toggle_allocation_gate+0x3a5/0x440 mm/kfence/core.c:834 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302 worker_thread+0xa29/0x11e0 kernel/workqueue.c:2449 kthread+0x281/0x320 kernel/kthread.c:386 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 final repro crashed as (corrupted=false): RBP: 00007efd85a32c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007efd85c15fac R14: 00007efd85c15fa0 R15: 00007efd85c15fa0 watchdog: BUG: soft lockup - CPU#1 stuck for 287s! [syz.2.17:363] Modules linked in: CPU: 1 PID: 363 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:check_kcov_mode kernel/kcov.c:184 [inline] RIP: 0010:write_comp_data kernel/kcov.c:245 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x30/0x90 kernel/kcov.c:313 Code: 45 08 65 48 8b 15 90 fa 90 7e 65 8b 0d 91 fa 90 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 6c 0b 00 00 00 74 52 <8b> 8a 48 0b 00 00 83 f9 03 75 47 48 8b 8a 50 0b 00 00 44 8b 8a 4c RSP: 0018:ffffc900009a6e38 EFLAGS: 00000246 RAX: ffffffff8409a297 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff888113d49440 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900009a6e38 R08: ffff888113d49440 R09: 0000000000000002 R10: 00000000ffffffff R11: 0000000000000000 R12: 00000000fffffff1 R13: ffff88812056a000 R14: ffff888120568400 R15: ffff88812056a040 FS: 000055555bee7500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efd85872140 CR3: 0000000121960000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: qdisc_tree_reduce_backlog+0x127/0x360 net/sched/sch_api.c:790 fq_codel_change+0xb3f/0x1090 net/sched/sch_fq_codel.c:440 fq_codel_init+0x384/0xa90 net/sched/sch_fq_codel.c:477 qdisc_create+0x895/0x1180 net/sched/sch_api.c:1306 tc_modify_qdisc+0x900/0x19d0 net/sched/sch_api.c:-1 rtnetlink_rcv_msg+0xb3b/0xe00 net/core/rtnetlink.c:6150 netlink_rcv_skb+0x20f/0x460 net/netlink/af_netlink.c:2521 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6168 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x8ab/0xa30 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x8b9/0xbd0 net/netlink/af_netlink.c:1873 sock_sendmsg_nosec net/socket.c:716 [inline] __sock_sendmsg net/socket.c:728 [inline] ____sys_sendmsg+0x5cc/0x990 net/socket.c:2508 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2562 __sys_sendmsg net/socket.c:2591 [inline] __do_sys_sendmsg net/socket.c:2600 [inline] __se_sys_sendmsg net/socket.c:2598 [inline] __x64_sys_sendmsg+0x205/0x2d0 net/socket.c:2598 x64_sys_call+0x171/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7efd8599c819 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd71423928 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007efd85c15fa0 RCX: 00007efd8599c819 RDX: 0000000000008840 RSI: 0000200000000740 RDI: 0000000000000005 RBP: 00007efd85a32c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007efd85c15fac R14: 00007efd85c15fa0 R15: 00007efd85c15fa0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 367 Comm: kworker/u4:5 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x60 kernel/kcov.c:215 Code: 8b 3d fc 4c 21 06 48 89 de e8 e4 9b 44 00 5b 5d c3 00 90 90 90 90 90 90 90 90 90 90 90 b8 0c 67 40 a5 55 48 89 e5 48 8b 45 08 <65> 48 8b 0d b0 fe 90 7e 65 8b 15 b1 fe 90 7e 81 e2 00 01 ff 00 74 RSP: 0018:ffffc900009e7830 EFLAGS: 00000202 RAX: ffffffff8167ff39 RBX: dffffc0000000000 RCX: ffff888114c9bcc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900009e7830 R08: ffff8881f6e390d7 R09: 1ffff1103edc721a R10: 0000000000000000 R11: ffffffff8134c6c0 R12: 1ffff1103edc7218 R13: 1ffff1103ede78a5 R14: 0000000000000001 R15: ffff8881f6f3c528 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00001357f4fe9010 CR3: 000000000700f000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: csd_lock_wait kernel/smp.c:453 [inline] smp_call_function_many_cond+0x8a9/0x980 kernel/smp.c:998 on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1165 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1574 [inline] text_poke_bp_batch+0x1cf/0x600 arch/x86/kernel/alternative.c:1774 text_poke_flush arch/x86/kernel/alternative.c:1965 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1972 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146 __jump_label_update+0x37c/0x3a0 kernel/jump_label.c:451 jump_label_update+0x39b/0x450 kernel/jump_label.c:797 static_key_disable_cpuslocked+0xc9/0x1a0 kernel/jump_label.c:203 static_key_disable+0x1a/0x30 kernel/jump_label.c:211 toggle_allocation_gate+0x3a5/0x440 mm/kfence/core.c:834 process_one_work+0x71f/0xc40 kernel/workqueue.c:2302 worker_thread+0xa29/0x11e0 kernel/workqueue.c:2449 kthread+0x281/0x320 kernel/kthread.c:386 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295