Extracting prog: 4m32.301985832s
Minimizing prog: 49m21.394203098s
Simplifying prog options: 8m37.62429343s
Extracting C: 2m20.889290633s
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}}): sendmsg$nl_route-sendto$inet-socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
sendmsg$nl_route(0xffffffffffffffff, 0x0, 0x0)
sendto$inet(0xffffffffffffffff, 0x0, 0x0, 0x8804, 0x0, 0x0)
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program crashed: INFO: rcu detected stall in rtnl_newlink
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=5m23.467249856s, {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}}): sendmsg$nl_route-sendto$inet-socket$nl_route-ioctl$sock_SIOCGIFINDEX
detailed listing:
executing program 0:
sendmsg$nl_route(0xffffffffffffffff, 0x0, 0x0)
sendto$inet(0xffffffffffffffff, 0x0, 0x0, 0x8804, 0x0, 0x0)
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00'})

program did not crash
testing program (duration=5m23.467249856s, {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}}): sendmsg$nl_route-sendto$inet-socket$nl_route-sendmsg$nl_route_sched
detailed listing:
executing program 0:
sendmsg$nl_route(0xffffffffffffffff, 0x0, 0x0)
sendto$inet(0xffffffffffffffff, 0x0, 0x0, 0x8804, 0x0, 0x0)
r0 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program did not crash
testing program (duration=5m23.467249856s, {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}}): sendmsg$nl_route-sendto$inet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
sendmsg$nl_route(0xffffffffffffffff, 0x0, 0x0)
sendto$inet(0xffffffffffffffff, 0x0, 0x0, 0x8804, 0x0, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000840)={'bond0\x00', <r0=>0x0})
sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r0, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program did not crash
testing program (duration=5m23.467249856s, {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}}): sendmsg$nl_route-socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
sendmsg$nl_route(0xffffffffffffffff, 0x0, 0x0)
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program crashed: INFO: rcu detected stall in worker_thread
testing program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program crashed: INFO: rcu detected stall in worker_thread
testing program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, 0x0)
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program did not crash
testing program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00'})
sendmsg$nl_route_sched(r0, 0x0, 0x0)

program did not crash
testing program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00'})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, 0x0}, 0x0)

program did not crash
testing program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00'})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={0x0}}, 0x0)

program did not crash
testing program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0x34, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x4}}]}, 0x34}}, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
program crashed: INFO: rcu detected stall in corrupted
a never seen crash title: INFO: rcu detected stall in corrupted, ignore
simplifying guilty program options
testing program (duration=5m23.467249856s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program crashed: INFO: rcu detected stall in mas_find
a never seen crash title: INFO: rcu detected stall in mas_find, ignore
testing program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program crashed: INFO: rcu detected stall in worker_thread
extracting C reproducer
testing compiled C program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
program crashed: INFO: rcu detected stall in do_idle
a never seen crash title: INFO: rcu detected stall in do_idle, ignore
testing program (duration=5m23.467249856s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program crashed: INFO: rcu detected stall in do_idle
validation run: crashed=true
testing program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program crashed: INFO: rcu detected stall in getdents64
validation run: crashed=true
testing program (duration=5m23.467249856s, {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$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000840)={'bond0\x00', <r1=>0x0})
sendmsg$nl_route_sched(r0, &(0x7f0000000880)={0x0, 0x0, &(0x7f00000008c0)={&(0x7f0000000900)=@newqdisc={0xa4, 0x24, 0x601, 0x0, 0x0, {0x0, 0x0, 0x0, r1, {0x0, 0x1}, {0xffff, 0xffff}}, [@qdisc_kind_options=@q_taprio={{0xb}, {0x74, 0x2, [@TCA_TAPRIO_ATTR_PRIOMAP={0x56, 0x1, {0x2, [], 0x0, [0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x8], [0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x3]}}, @TCA_TAPRIO_ATTR_SCHED_ENTRY_LIST={0x10, 0x2, 0x0, 0x1, [{0xc, 0x1, 0x0, 0x1, [@TCA_TAPRIO_SCHED_ENTRY_INTERVAL={0x8, 0x4, 0x2f8}]}]}, @TCA_TAPRIO_ATTR_SCHED_CLOCKID={0x8, 0x5, 0xb}]}}]}, 0xa4}}, 0x0)

program crashed: INFO: rcu detected stall in sys_mprotect
validation run: crashed=true
reproducing took 1h15m45.80626055s
repro crashed as (corrupted=false):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=47a4/1/0x4000000000000000 softirq=20185/20190 fqs=124
rcu: 	(detected by 1, t=10502 jiffies, g=17201, q=4943 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5963 Comm: sed Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:470 [inline]
RIP: 0010:lock_is_held_type+0xec/0x150 kernel/locking/lockdep.c:6017
Code: 0f 95 c0 31 db 39 c5 0f 94 c3 eb 05 bb 01 00 00 00 48 c7 c7 d2 da 92 8e e8 01 1c 00 00 b8 ff ff ff ff 65 0f c1 05 8c 6e bd 08 <83> f8 01 75 25 9c 58 a9 00 02 00 00 75 39 41 f7 c4 00 02 00 00 74
RSP: 0018:ffffc90000007cc0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000001000001
RDX: ffff88802ca79f40 RSI: ffffffff8e92dad2 RDI: ffffffff8c8e8c80
RBP: 00000000ffffffff R08: 0000000001000001 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f90 R12: 0000000000000046
R13: ffff88802ca79f40 R14: ffff88803574c2c0 R15: 0000000000000001
FS:  00007fca874c5c80(0000) GS:ffff88812361c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fca87699a90 CR3: 000000005fdc4000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 lock_is_held include/linux/lockdep.h:249 [inline]
 advance_sched+0x1d9/0xc80 net/sched/sch_taprio.c:949
 __run_hrtimer kernel/time/hrtimer.c:2075 [inline]
 __hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2132
 hrtimer_interrupt+0x4cd/0xaa0 kernel/time/hrtimer.c:2251
 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:mas_next_slot+0x1de/0xd70 lib/maple_tree.c:4182
Code: 89 e7 e8 a5 67 44 f6 4d 8b 34 24 4c 89 f7 4c 8b 64 24 58 4c 89 e6 e8 d1 8c cd f5 4d 39 e6 73 0f e8 f7 89 cd f5 4c 8b 6c 24 38 <e9> cd 00 00 00 48 8b 44 24 48 42 0f b6 04 38 84 c0 0f 85 28 05 00
RSP: 0018:ffffc900033df4c0 EFLAGS: 00000293
RAX: ffffffff8bfb8bd9 RBX: 0000000000000001 RCX: ffff88802ca79f40
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 00007fca8777dfff
RBP: ffff8880330cce00 R08: ffff88802ca79f40 R09: 0000000000000004
R10: 0000000000000004 R11: 0000000000000000 R12: ffffffffffffffff
R13: ffffc900033df650 R14: 00007fca8777dfff R15: dffffc0000000000
 mas_find+0x6d6/0xcb0 lib/maple_tree.c:5451
 vma_next include/linux/mm.h:1816 [inline]
 validate_mm+0xff/0x4c0 mm/vma.c:680
 __split_vma+0x94a/0xa90 mm/vma.c:597
 split_vma mm/vma.c:626 [inline]
 vma_modify+0xa3f/0x1c50 mm/vma.c:1772
 vma_modify_flags+0x2a4/0x3c0 mm/vma.c:1792
 mprotect_fixup+0x539/0xda0 mm/mprotect.c:823
 do_mprotect_pkey+0x8e7/0xd40 mm/mprotect.c:1001
 __do_sys_mprotect mm/mprotect.c:1022 [inline]
 __se_sys_mprotect mm/mprotect.c:1019 [inline]
 __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:1019
 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: 0033:0x7fca8785c2c7
Code: 89 3d fd 3f 01 00 eb 90 0f 1f 00 f7 d8 89 05 f0 3f 01 00 48 c7 c0 ff ff ff ff eb 91 0f 1f 80 00 00 00 00 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d c9 3f 01 00 f7 d8 89 01 48 83
RSP: 002b:00007fff2a937d38 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007fca87831ab0 RCX: 00007fca8785c2c7
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007fca87561000
RBP: 00007fff2a938000 R08: 0000000000000000 R09: 00007fca87690700
R10: 00007fca87831ab0 R11: 0000000000000206 R12: 0000000000000028
R13: 0000003da3f84e5c R14: 0000000000000000 R15: 00007fca87870310
 </TASK>
rcu: rcu_preempt kthread starved for 10254 jiffies! g17201 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->cpu=1
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:27696 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5830 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
 rcu_gp_kthread+0x9c/0x340 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: 1 UID: 0 PID: 5641 Comm: syz-execprog Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x80 kernel/kcov.c:216
Code: 89 fb e8 23 00 00 00 48 8b 3d 94 6a ce 0c 48 89 de 5b e9 73 22 6b 00 cc 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 28 2a f7 12 65 48 8b 15 28 2a
RSP: 0000:ffffc900039cf718 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff8880b8244028 RCX: ffff888077640000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900039cf870 R08: ffff88807764159f R09: 1ffff1100eec82b3
R10: dffffc0000000000 R11: ffffffff817a65a0 R12: 1ffff11017048805
R13: 0000000000000000 R14: ffff8880b8244020 R15: 0000000000000001
FS:  0000102c054fc890(0000) GS:ffff88812371c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f722603ee20 CR3: 000000007baf0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 csd_lock_wait kernel/smp.c:389 [inline]
 csd_lock kernel/smp.c:422 [inline]
 smp_call_function_many_cond+0x63e/0x1500 kernel/smp.c:970
 __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+0x910/0x10b0 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:116
 wp_page_copy mm/memory.c:4136 [inline]
 do_wp_page+0x3c3a/0x4b60 mm/memory.c:4535
 handle_pte_fault mm/memory.c:6651 [inline]
 __handle_mm_fault mm/memory.c:6776 [inline]
 handle_mm_fault+0x15d7/0x3750 mm/memory.c:6943
 do_user_addr_fault+0xb35/0x1480 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: 0033:0x44570e
Code: f9 03 75 09 48 8d 05 39 19 4c 01 eb 07 48 8d 05 28 19 4c 01 48 8b 4c 24 48 48 8b 19 48 89 1a 48 8b 18 48 89 5a 08 90 48 89 d3 <48> 87 11 90 48 87 18 90 90 48 8d 05 8a 63 4e 01 66 90 e8 1b a5 fd
RSP: 002b:0000102c05825500 EFLAGS: 00010246
RAX: 0000000001907018 RBX: 00007f7225ba2100 RCX: 00007f722603ee20
RDX: 00007f7225ba2100 RSI: 0000102c054c7b00 RDI: 00007f7225ba2130
RBP: 0000102c05825550 R08: 0000000000016100 R09: 0000000000000003
R10: 0000000000000002 R11: 97bc3fd4b57ac9b0 R12: 000000000048d781
R13: 0000102c054c7b00 R14: 0000102c08efeb40 R15: 0000102c054fcc50
 </TASK>

final repro crashed as (corrupted=false):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=47a4/1/0x4000000000000000 softirq=20185/20190 fqs=124
rcu: 	(detected by 1, t=10502 jiffies, g=17201, q=4943 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5963 Comm: sed Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:470 [inline]
RIP: 0010:lock_is_held_type+0xec/0x150 kernel/locking/lockdep.c:6017
Code: 0f 95 c0 31 db 39 c5 0f 94 c3 eb 05 bb 01 00 00 00 48 c7 c7 d2 da 92 8e e8 01 1c 00 00 b8 ff ff ff ff 65 0f c1 05 8c 6e bd 08 <83> f8 01 75 25 9c 58 a9 00 02 00 00 75 39 41 f7 c4 00 02 00 00 74
RSP: 0018:ffffc90000007cc0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000001000001
RDX: ffff88802ca79f40 RSI: ffffffff8e92dad2 RDI: ffffffff8c8e8c80
RBP: 00000000ffffffff R08: 0000000001000001 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f90 R12: 0000000000000046
R13: ffff88802ca79f40 R14: ffff88803574c2c0 R15: 0000000000000001
FS:  00007fca874c5c80(0000) GS:ffff88812361c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fca87699a90 CR3: 000000005fdc4000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 lock_is_held include/linux/lockdep.h:249 [inline]
 advance_sched+0x1d9/0xc80 net/sched/sch_taprio.c:949
 __run_hrtimer kernel/time/hrtimer.c:2075 [inline]
 __hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2132
 hrtimer_interrupt+0x4cd/0xaa0 kernel/time/hrtimer.c:2251
 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:mas_next_slot+0x1de/0xd70 lib/maple_tree.c:4182
Code: 89 e7 e8 a5 67 44 f6 4d 8b 34 24 4c 89 f7 4c 8b 64 24 58 4c 89 e6 e8 d1 8c cd f5 4d 39 e6 73 0f e8 f7 89 cd f5 4c 8b 6c 24 38 <e9> cd 00 00 00 48 8b 44 24 48 42 0f b6 04 38 84 c0 0f 85 28 05 00
RSP: 0018:ffffc900033df4c0 EFLAGS: 00000293
RAX: ffffffff8bfb8bd9 RBX: 0000000000000001 RCX: ffff88802ca79f40
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 00007fca8777dfff
RBP: ffff8880330cce00 R08: ffff88802ca79f40 R09: 0000000000000004
R10: 0000000000000004 R11: 0000000000000000 R12: ffffffffffffffff
R13: ffffc900033df650 R14: 00007fca8777dfff R15: dffffc0000000000
 mas_find+0x6d6/0xcb0 lib/maple_tree.c:5451
 vma_next include/linux/mm.h:1816 [inline]
 validate_mm+0xff/0x4c0 mm/vma.c:680
 __split_vma+0x94a/0xa90 mm/vma.c:597
 split_vma mm/vma.c:626 [inline]
 vma_modify+0xa3f/0x1c50 mm/vma.c:1772
 vma_modify_flags+0x2a4/0x3c0 mm/vma.c:1792
 mprotect_fixup+0x539/0xda0 mm/mprotect.c:823
 do_mprotect_pkey+0x8e7/0xd40 mm/mprotect.c:1001
 __do_sys_mprotect mm/mprotect.c:1022 [inline]
 __se_sys_mprotect mm/mprotect.c:1019 [inline]
 __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:1019
 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: 0033:0x7fca8785c2c7
Code: 89 3d fd 3f 01 00 eb 90 0f 1f 00 f7 d8 89 05 f0 3f 01 00 48 c7 c0 ff ff ff ff eb 91 0f 1f 80 00 00 00 00 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d c9 3f 01 00 f7 d8 89 01 48 83
RSP: 002b:00007fff2a937d38 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007fca87831ab0 RCX: 00007fca8785c2c7
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007fca87561000
RBP: 00007fff2a938000 R08: 0000000000000000 R09: 00007fca87690700
R10: 00007fca87831ab0 R11: 0000000000000206 R12: 0000000000000028
R13: 0000003da3f84e5c R14: 0000000000000000 R15: 00007fca87870310
 </TASK>
rcu: rcu_preempt kthread starved for 10254 jiffies! g17201 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->cpu=1
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:27696 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5583 [inline]
 __schedule+0x17dd/0x5830 kernel/sched/core.c:7382
 __schedule_loop kernel/sched/core.c:7459 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7474
 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
 rcu_gp_kthread+0x9c/0x340 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: 1 UID: 0 PID: 5641 Comm: syz-execprog Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x80 kernel/kcov.c:216
Code: 89 fb e8 23 00 00 00 48 8b 3d 94 6a ce 0c 48 89 de 5b e9 73 22 6b 00 cc 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 28 2a f7 12 65 48 8b 15 28 2a
RSP: 0000:ffffc900039cf718 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff8880b8244028 RCX: ffff888077640000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900039cf870 R08: ffff88807764159f R09: 1ffff1100eec82b3
R10: dffffc0000000000 R11: ffffffff817a65a0 R12: 1ffff11017048805
R13: 0000000000000000 R14: ffff8880b8244020 R15: 0000000000000001
FS:  0000102c054fc890(0000) GS:ffff88812371c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f722603ee20 CR3: 000000007baf0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 csd_lock_wait kernel/smp.c:389 [inline]
 csd_lock kernel/smp.c:422 [inline]
 smp_call_function_many_cond+0x63e/0x1500 kernel/smp.c:970
 __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+0x910/0x10b0 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:116
 wp_page_copy mm/memory.c:4136 [inline]
 do_wp_page+0x3c3a/0x4b60 mm/memory.c:4535
 handle_pte_fault mm/memory.c:6651 [inline]
 __handle_mm_fault mm/memory.c:6776 [inline]
 handle_mm_fault+0x15d7/0x3750 mm/memory.c:6943
 do_user_addr_fault+0xb35/0x1480 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: 0033:0x44570e
Code: f9 03 75 09 48 8d 05 39 19 4c 01 eb 07 48 8d 05 28 19 4c 01 48 8b 4c 24 48 48 8b 19 48 89 1a 48 8b 18 48 89 5a 08 90 48 89 d3 <48> 87 11 90 48 87 18 90 90 48 8d 05 8a 63 4e 01 66 90 e8 1b a5 fd
RSP: 002b:0000102c05825500 EFLAGS: 00010246
RAX: 0000000001907018 RBX: 00007f7225ba2100 RCX: 00007f722603ee20
RDX: 00007f7225ba2100 RSI: 0000102c054c7b00 RDI: 00007f7225ba2130
RBP: 0000102c05825550 R08: 0000000000016100 R09: 0000000000000003
R10: 0000000000000002 R11: 97bc3fd4b57ac9b0 R12: 000000000048d781
R13: 0000102c054c7b00 R14: 0000102c08efeb40 R15: 0000102c054fcc50
 </TASK>