Extracting prog: 4m49.450483001s
Minimizing prog: 1h14m29.398518448s
Simplifying prog options: 5m54.470258497s
Extracting C: 2m32.262728606s
Simplifying C: 0s


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$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

program crashed: INFO: rcu detected stall in sys_umount
single: successfully extracted reproducer
found reproducer with 5 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
socket$unix(0x1, 0x2, 0x0)
r0 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, 0x0, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r0, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, 0x0, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r0=>0x0})
r1 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r1, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r0, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r1, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r0, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, 0x0)
r1 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r1, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, 0x0, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r1, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, 0x0, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, 0x0, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, 0x0}, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r2, 0x0, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={0x0}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
program crashed: INFO: rcu detected stall in exit_to_user_mode_loop
a never seen crash title: INFO: rcu detected stall in exit_to_user_mode_loop, 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

program crashed: INFO: rcu detected stall in worker_thread
a never seen crash title: INFO: rcu detected stall in worker_thread, ignore
testing program (duration=6m0s, {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: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$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

program crashed: INFO: rcu detected stall in handle_softirqs
a never seen crash title: INFO: rcu detected stall in handle_softirqs, ignore
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$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

program crashed: INFO: rcu detected stall in tc_modify_qdisc
validation run: crashed=true
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$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

program crashed: INFO: rcu detected stall in worker_thread
validation run: crashed=true
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$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$unix(0x1, 0x2, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f00000000c0)={'ipvlan0\x00', <r1=>0x0})
r2 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r2, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000300)=@newqdisc={0x88, 0x24, 0xf0b, 0x70bd26, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0xffff}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_mqprio={{0xb}, {0x58, 0x2, {{0x1, [], 0x0, [0x1, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0x0, 0x5c4, 0x8000, 0x0, 0x0, 0x3dc, 0x1], [0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1000]}}}}]}, 0x88}}, 0x20000000)
sendmsg$nl_route_sched(r2, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000440)=@newqdisc={0x4c, 0x24, 0x4ee4e6a52ff56541, 0x70bd29, 0xfffbffff, {0x0, 0x0, 0x0, r1, {0x0, 0xd}, {0xffff, 0xffff}, {0xc, 0xfff3}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x1c, 0x2, [@TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x46}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0x7}]}}]}, 0x4c}, 0x1, 0x0, 0x0, 0x40005}, 0x8010)

program crashed: INFO: rcu detected stall in tc_modify_qdisc
validation run: crashed=true
reproducing took 1h37m8.977980735s
repro crashed as (corrupted=false):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=8594/1/0x4000000000000000 softirq=16475/16476 fqs=63
rcu: 	(detected by 0, t=10502 jiffies, g=15553, q=803 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5989 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:97 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:115 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:140 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:172 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:191 [inline]
RIP: 0010:kasan_check_range+0x81/0x2c0 mm/kasan/generic.c:200
Code: ff df 4f 8d 1c 17 49 ff c8 4d 89 c1 49 c1 e9 03 48 bb 01 00 00 00 00 fc ff df 4d 8d 34 19 4d 89 f4 4d 29 dc 49 83 fc 10 7f 29 <4d> 85 e4 0f 84 3d 01 00 00 4c 89 cb 48 f7 d3 4c 01 fb 41 80 3b 00
RSP: 0018:ffffc90000a18d38 EFLAGS: 00000083
RAX: 0000000000000001 RBX: dffffc0000000001 RCX: ffffffff81a3e08d
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880b8728280
RBP: ffff88807c234300 R08: ffff8880b8728283 R09: 1ffff110170e5050
R10: dffffc0000000000 R11: ffffed10170e5050 R12: 0000000000000001
R13: ffffffff89ee3650 R14: ffffed10170e5051 R15: 1ffff110170e5050
FS:  00007fa36e30c6c0(0000) GS:ffff888124dca000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5b588db708 CR3: 0000000058362000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:82 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 queued_spin_is_locked include/asm-generic/qspinlock.h:58 [inline]
 debug_spin_unlock kernel/locking/spinlock_debug.c:101 [inline]
 do_raw_spin_unlock+0x4d/0x200 kernel/locking/spinlock_debug.c:141
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:209 [inline]
 _raw_spin_unlock_irqrestore+0x23/0x80 kernel/locking/spinlock.c:221
 __run_hrtimer kernel/time/hrtimer.c:2070 [inline]
 __hrtimer_run_queues+0x2bf/0xa10 kernel/time/hrtimer.c:2131
 hrtimer_interrupt+0x4cd/0xaa0 kernel/time/hrtimer.c:2250
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
 __sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lockdep_unregister_key+0x2d4/0x350 kernel/locking/lockdep.c:6712
Code: e9 a1 14 09 00 48 c7 c7 90 99 9b 96 89 c6 e8 53 c8 45 0a e9 66 fe ff ff e8 a9 f6 42 0a 41 f7 c7 00 02 00 00 74 b4 fb 40 84 ed <75> b3 eb c4 90 0f 0b 90 e9 27 ff ff ff 90 0f 0b 90 e9 2f ff ff ff
RSP: 0018:ffffc900038ff130 EFLAGS: 00000246
RAX: 0000000000000046 RBX: ffff8880120ee268 RCX: 0000000000000046
RDX: ffffffff945714f8 RSI: ffffffff8e430807 RDI: ffffffff8c6dac80
RBP: ffff888076bedd00 R08: ffffffff81b0d2c8 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff20f4c10 R12: 0000000000000000
R13: ffff8880120ee269 R14: 0000000000001000 R15: 0000000000000a07
 qdisc_lock_uninit include/net/pkt_sched.h:333 [inline]
 __qdisc_destroy+0x1ab/0x470 net/sched/sch_generic.c:1124
 taprio_attach+0x253/0x380 net/sched/sch_taprio.c:2168
 qdisc_graft+0x1292/0x1810 net/sched/sch_api.c:1186
 __tc_modify_qdisc net/sched/sch_api.c:1791 [inline]
 tc_modify_qdisc+0x1968/0x2390 net/sched/sch_api.c:1847
 rtnetlink_rcv_msg+0x7b9/0xc00 net/core/rtnetlink.c:7146
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2575
 netlink_unicast_kernel net/netlink/af_netlink.c:1338 [inline]
 netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1364
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
 __sock_sendmsg net/socket.c:815 [inline]
 ____sys_sendmsg+0x54e/0x850 net/socket.c:2713
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767
 __sys_sendmsg net/socket.c:2799 [inline]
 __do_sys_sendmsg net/socket.c:2804 [inline]
 __se_sys_sendmsg net/socket.c:2802 [inline]
 __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa36d39e159
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:00007fa36e30c028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa36d625fa0 RCX: 00007fa36d39e159
RDX: 0000000000008010 RSI: 00002000000012c0 RDI: 0000000000000004
RBP: 00007fa36d43506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa36d626038 R14: 00007fa36d625fa0 R15: 00007ffd75d09ed8
 </TASK>
rcu: rcu_preempt kthread starved for 10185 jiffies! g15553 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:28112 pid:17    tgid:17    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x17db/0x58f0 kernel/sched/core.c:7284
 __schedule_loop kernel/sched/core.c:7361 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7376
 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2330
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 5639 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:check_kcov_mode kernel/kcov.c:179 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x18/0x80 kernel/kcov.c:213
Code: cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0d f8 83 cd 11 65 48 8b 15 f8 83 cd 11 <f7> c2 00 01 00 ff 74 29 89 d6 81 e6 00 01 00 0f 81 fe 00 01 00 00
RSP: 0000:ffffc9000409f718 EFLAGS: 00000202
RAX: ffffffff81bb8afe RBX: ffff8880b87414c8 RCX: ffff88807fc38000
RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000409f870 R08: ffff88807fc3959f R09: 1ffff1100ff872b3
R10: dffffc0000000000 R11: ffffffff8179dc60 R12: 1ffff110170e8299
R13: 0000000000000001 R14: ffff8880b87414c0 R15: 0000000000000001
FS:  00007fce3f370880(0000) GS:ffff888124cca000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e7f2ea44d8 CR3: 000000006e72c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 csd_lock_wait kernel/smp.c:363 [inline]
 csd_lock kernel/smp.c:396 [inline]
 smp_call_function_many_cond+0x63e/0x1500 kernel/smp.c:944
 __flush_tlb_multi arch/x86/include/asm/paravirt.h:46 [inline]
 flush_tlb_multi arch/x86/mm/tlb.c:1361 [inline]
 flush_tlb_mm_range+0x8ff/0x1090 arch/x86/mm/tlb.c:1435
 flush_tlb_page arch/x86/include/asm/tlbflush.h:352 [inline]
 ptep_clear_flush+0x120/0x170 mm/pgtable-generic.c:104
 wp_page_copy mm/memory.c:4073 [inline]
 do_wp_page+0x3c5c/0x4b80 mm/memory.c:4472
 handle_pte_fault mm/memory.c:6582 [inline]
 __handle_mm_fault mm/memory.c:6707 [inline]
 handle_mm_fault+0x15d7/0x3750 mm/memory.c:6876
 do_user_addr_fault+0xa4f/0x1340 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7fce3ecb5b69
Code: 10 48 81 f9 ff 03 00 00 76 28 48 8b 57 20 48 85 d2 74 1f 48 3b 7a 28 75 76 48 8b 4f 28 48 3b 79 20 75 6c 48 83 78 20 00 74 17 <48> 89 4a 28 48 89 51 20 48 83 c4 08 c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff176f0820 EFLAGS: 00010206
RAX: 00007fce3edf2150 RBX: 000055e7f2ea44b0 RCX: 000055e7f2ea44b0
RDX: 000055e7f2ea44b0 RSI: 00007fce3edf2150 RDI: 000055e7f2ea44b0
RBP: 00007fce3edf1ac0 R08: 0000000000002760 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000003a50
R13: 000055e7f2ea7f00 R14: 0000000000007af0 R15: 00007fce3edf1ac0
 </TASK>

final repro crashed as (corrupted=false):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=8594/1/0x4000000000000000 softirq=16475/16476 fqs=63
rcu: 	(detected by 0, t=10502 jiffies, g=15553, q=803 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5989 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:97 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:115 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:140 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:172 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:191 [inline]
RIP: 0010:kasan_check_range+0x81/0x2c0 mm/kasan/generic.c:200
Code: ff df 4f 8d 1c 17 49 ff c8 4d 89 c1 49 c1 e9 03 48 bb 01 00 00 00 00 fc ff df 4d 8d 34 19 4d 89 f4 4d 29 dc 49 83 fc 10 7f 29 <4d> 85 e4 0f 84 3d 01 00 00 4c 89 cb 48 f7 d3 4c 01 fb 41 80 3b 00
RSP: 0018:ffffc90000a18d38 EFLAGS: 00000083
RAX: 0000000000000001 RBX: dffffc0000000001 RCX: ffffffff81a3e08d
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880b8728280
RBP: ffff88807c234300 R08: ffff8880b8728283 R09: 1ffff110170e5050
R10: dffffc0000000000 R11: ffffed10170e5050 R12: 0000000000000001
R13: ffffffff89ee3650 R14: ffffed10170e5051 R15: 1ffff110170e5050
FS:  00007fa36e30c6c0(0000) GS:ffff888124dca000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5b588db708 CR3: 0000000058362000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:82 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 queued_spin_is_locked include/asm-generic/qspinlock.h:58 [inline]
 debug_spin_unlock kernel/locking/spinlock_debug.c:101 [inline]
 do_raw_spin_unlock+0x4d/0x200 kernel/locking/spinlock_debug.c:141
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:209 [inline]
 _raw_spin_unlock_irqrestore+0x23/0x80 kernel/locking/spinlock.c:221
 __run_hrtimer kernel/time/hrtimer.c:2070 [inline]
 __hrtimer_run_queues+0x2bf/0xa10 kernel/time/hrtimer.c:2131
 hrtimer_interrupt+0x4cd/0xaa0 kernel/time/hrtimer.c:2250
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
 __sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lockdep_unregister_key+0x2d4/0x350 kernel/locking/lockdep.c:6712
Code: e9 a1 14 09 00 48 c7 c7 90 99 9b 96 89 c6 e8 53 c8 45 0a e9 66 fe ff ff e8 a9 f6 42 0a 41 f7 c7 00 02 00 00 74 b4 fb 40 84 ed <75> b3 eb c4 90 0f 0b 90 e9 27 ff ff ff 90 0f 0b 90 e9 2f ff ff ff
RSP: 0018:ffffc900038ff130 EFLAGS: 00000246
RAX: 0000000000000046 RBX: ffff8880120ee268 RCX: 0000000000000046
RDX: ffffffff945714f8 RSI: ffffffff8e430807 RDI: ffffffff8c6dac80
RBP: ffff888076bedd00 R08: ffffffff81b0d2c8 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff20f4c10 R12: 0000000000000000
R13: ffff8880120ee269 R14: 0000000000001000 R15: 0000000000000a07
 qdisc_lock_uninit include/net/pkt_sched.h:333 [inline]
 __qdisc_destroy+0x1ab/0x470 net/sched/sch_generic.c:1124
 taprio_attach+0x253/0x380 net/sched/sch_taprio.c:2168
 qdisc_graft+0x1292/0x1810 net/sched/sch_api.c:1186
 __tc_modify_qdisc net/sched/sch_api.c:1791 [inline]
 tc_modify_qdisc+0x1968/0x2390 net/sched/sch_api.c:1847
 rtnetlink_rcv_msg+0x7b9/0xc00 net/core/rtnetlink.c:7146
 netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2575
 netlink_unicast_kernel net/netlink/af_netlink.c:1338 [inline]
 netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1364
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
 __sock_sendmsg net/socket.c:815 [inline]
 ____sys_sendmsg+0x54e/0x850 net/socket.c:2713
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767
 __sys_sendmsg net/socket.c:2799 [inline]
 __do_sys_sendmsg net/socket.c:2804 [inline]
 __se_sys_sendmsg net/socket.c:2802 [inline]
 __x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa36d39e159
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:00007fa36e30c028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa36d625fa0 RCX: 00007fa36d39e159
RDX: 0000000000008010 RSI: 00002000000012c0 RDI: 0000000000000004
RBP: 00007fa36d43506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa36d626038 R14: 00007fa36d625fa0 R15: 00007ffd75d09ed8
 </TASK>
rcu: rcu_preempt kthread starved for 10185 jiffies! g15553 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:28112 pid:17    tgid:17    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5533 [inline]
 __schedule+0x17db/0x58f0 kernel/sched/core.c:7284
 __schedule_loop kernel/sched/core.c:7361 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7376
 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2330
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 5639 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:check_kcov_mode kernel/kcov.c:179 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x18/0x80 kernel/kcov.c:213
Code: cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0d f8 83 cd 11 65 48 8b 15 f8 83 cd 11 <f7> c2 00 01 00 ff 74 29 89 d6 81 e6 00 01 00 0f 81 fe 00 01 00 00
RSP: 0000:ffffc9000409f718 EFLAGS: 00000202
RAX: ffffffff81bb8afe RBX: ffff8880b87414c8 RCX: ffff88807fc38000
RDX: 0000000000000002 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000409f870 R08: ffff88807fc3959f R09: 1ffff1100ff872b3
R10: dffffc0000000000 R11: ffffffff8179dc60 R12: 1ffff110170e8299
R13: 0000000000000001 R14: ffff8880b87414c0 R15: 0000000000000001
FS:  00007fce3f370880(0000) GS:ffff888124cca000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e7f2ea44d8 CR3: 000000006e72c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 csd_lock_wait kernel/smp.c:363 [inline]
 csd_lock kernel/smp.c:396 [inline]
 smp_call_function_many_cond+0x63e/0x1500 kernel/smp.c:944
 __flush_tlb_multi arch/x86/include/asm/paravirt.h:46 [inline]
 flush_tlb_multi arch/x86/mm/tlb.c:1361 [inline]
 flush_tlb_mm_range+0x8ff/0x1090 arch/x86/mm/tlb.c:1435
 flush_tlb_page arch/x86/include/asm/tlbflush.h:352 [inline]
 ptep_clear_flush+0x120/0x170 mm/pgtable-generic.c:104
 wp_page_copy mm/memory.c:4073 [inline]
 do_wp_page+0x3c5c/0x4b80 mm/memory.c:4472
 handle_pte_fault mm/memory.c:6582 [inline]
 __handle_mm_fault mm/memory.c:6707 [inline]
 handle_mm_fault+0x15d7/0x3750 mm/memory.c:6876
 do_user_addr_fault+0xa4f/0x1340 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7fce3ecb5b69
Code: 10 48 81 f9 ff 03 00 00 76 28 48 8b 57 20 48 85 d2 74 1f 48 3b 7a 28 75 76 48 8b 4f 28 48 3b 79 20 75 6c 48 83 78 20 00 74 17 <48> 89 4a 28 48 89 51 20 48 83 c4 08 c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff176f0820 EFLAGS: 00010206
RAX: 00007fce3edf2150 RBX: 000055e7f2ea44b0 RCX: 000055e7f2ea44b0
RDX: 000055e7f2ea44b0 RSI: 00007fce3edf2150 RDI: 000055e7f2ea44b0
RBP: 00007fce3edf1ac0 R08: 0000000000002760 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000003a50
R13: 000055e7f2ea7f00 R14: 0000000000007af0 R15: 00007fce3edf1ac0
 </TASK>