Extracting prog: 4m44.480610833s
Minimizing prog: 1h32m7.962206692s
Simplifying prog options: 12m14.97221215s
Extracting C: 2m21.821878162s
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:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program crashed: INFO: rcu detected stall in free_obj_work
single: successfully extracted reproducer
found reproducer with 10 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
ioctl$KVM_CAP_HYPERV_SYNIC2(0xffffffffffffffff, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(0xffffffffffffffff, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(0xffffffffffffffff, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$KVM_CREATE_IRQCHIP(0xffffffffffffffff, 0xae60)
r0 = ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r0, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r0, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r0, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = ioctl$KVM_CREATE_VM(0xffffffffffffffff, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r0, 0xae60)
r1 = ioctl$KVM_CREATE_VCPU(r0, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r1, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r1, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r1, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, 0x0, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, 0x0)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, 0x0, 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, 0x0)
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, 0x0)
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in kvm_vcpu_ioctl
a never seen crash title: INFO: rcu detected stall in kvm_vcpu_ioctl, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program crashed: INFO: rcu detected stall in cfg80211_wiphy_work
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program crashed: INFO: rcu detected stall in corrupted
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): prlimit64-sched_setscheduler-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-ioctl$KVM_CAP_HYPERV_SYNIC2-ioctl$KVM_SET_MSRS-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f0000000100)={0x8, 0x80000100008b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000300)=0x7)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_CAP_HYPERV_SYNIC2(r2, 0x4068aea3, &(0x7f0000000140))
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000040)={0x2, 0x0, [{0x400000b0, 0x0, 0x5}, {0x400000b1, 0x0, 0xffffffffffff0001}]})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program crashed: INFO: rcu detected stall in batadv_iv_send_outstanding_bat_ogm_packet
validation run: crashed=true
reproducing took 2h2m17.488356597s
repro crashed as (corrupted=false):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5199/1:b..l P6361/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=17169, q=750 ncpus=2)
task:kworker/u8:16   state:R  running task     stack:24408 pid:6361  tgid:6361  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5258 [inline]
 __schedule+0x150e/0x5070 kernel/sched/core.c:6866
 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7193
 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x16c/0x340 kernel/locking/lockdep.c:5872
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 44 91 25 11 <48> 3b 44 24 58 0f 85 e5 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc900040cf7e0 EFLAGS: 00000206
RAX: cc4e5ae589a49800 RBX: 0000000000000000 RCX: cc4e5ae589a49800
RDX: 00000000039c8441 RSI: ffffffff8dc93c7b RDI: ffffffff8be247e0
RBP: ffffffff8b302bd0 R08: ffffffff8b302bd0 R09: ffffffff8e33f2e0
R10: dffffc0000000000 R11: ffffed100f6b5317 R12: 0000000000000002
R13: ffffffff8e33f2e0 R14: 0000000000000000 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:867 [inline]
 batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:761 [inline]
 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:833 [inline]
 batadv_iv_ogm_schedule+0x454/0xf00 net/batman-adv/bat_iv_ogm.c:873
 batadv_iv_send_outstanding_bat_ogm_packet+0x6c6/0x7e0 net/batman-adv/bat_iv_ogm.c:1709
 process_one_work+0x93a/0x15a0 kernel/workqueue.c:3279
 process_scheduled_works kernel/workqueue.c:3362 [inline]
 worker_thread+0x9b0/0xee0 kernel/workqueue.c:3443
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
task:udevd           state:R  running task     stack:24824 pid:5199  tgid:5199  ppid:1      task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5258 [inline]
 __schedule+0x150e/0x5070 kernel/sched/core.c:6866
 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:7050
 preempt_schedule+0xae/0xc0 kernel/sched/core.c:7074
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0xfd/0x110 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 __wake_up_common_lock+0x190/0x1f0 kernel/sched/wait.c:127
 sock_def_readable+0x1eb/0x530 net/core/sock.c:3611
 __netlink_sendskb net/netlink/af_netlink.c:1263 [inline]
 netlink_sendskb+0xa1/0x140 net/netlink/af_netlink.c:1269
 netlink_unicast+0x397/0x9e0 net/netlink/af_netlink.c:1359
 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737
 __sock_sendmsg net/socket.c:752 [inline]
 ____sys_sendmsg+0x577/0x880 net/socket.c:2610
 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2664
 __sys_sendmsg net/socket.c:2696 [inline]
 __do_sys_sendmsg net/socket.c:2701 [inline]
 __se_sys_sendmsg net/socket.c:2699 [inline]
 __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2699
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5f550a7407
RSP: 002b:00007fffb2b68ca0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5f55774880 RCX: 00007f5f550a7407
RDX: 0000000000000000 RSI: 00007fffb2b68d00 RDI: 0000000000000004
RBP: 00005581b3115c90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000000cb
R13: 00005581b310e9e0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 9880 jiffies! g17169 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27280 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5258 [inline]
 __schedule+0x150e/0x5070 kernel/sched/core.c:6866
 __schedule_loop kernel/sched/core.c:6948 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6963
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82
Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 0e 21 00 f3 0f 1e fa fb f4 <e9> 48 ee 02 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007d80 EFLAGS: 000002c6
RAX: f85a9de81cba5100 RBX: ffffffff8197c6ba RCX: f85a9de81cba5100
RDX: 0000000000000001 RSI: ffffffff8daa9dc3 RDI: ffffffff8be247e0
RBP: ffffffff8e007ea8 R08: ffff8880b86336db R09: 1ffff110170c66db
R10: dffffc0000000000 R11: ffffed10170c66dc R12: ffffffff8fc3d070
R13: 1ffffffff1c129b8 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881259dc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34163fff CR3: 0000000033b54000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:767
 default_idle_call+0x73/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:191 [inline]
 do_idle+0x1ea/0x520 kernel/sched/idle.c:332
 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:430
 rest_init+0x2de/0x300 init/main.c:758
 start_kernel+0x3ac/0x400 init/main.c:1208
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x147
 </TASK>

final repro crashed as (corrupted=false):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5199/1:b..l P6361/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=17169, q=750 ncpus=2)
task:kworker/u8:16   state:R  running task     stack:24408 pid:6361  tgid:6361  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5258 [inline]
 __schedule+0x150e/0x5070 kernel/sched/core.c:6866
 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7193
 irqentry_exit+0x5d8/0x660 kernel/entry/common.c:216
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x16c/0x340 kernel/locking/lockdep.c:5872
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 44 91 25 11 <48> 3b 44 24 58 0f 85 e5 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc900040cf7e0 EFLAGS: 00000206
RAX: cc4e5ae589a49800 RBX: 0000000000000000 RCX: cc4e5ae589a49800
RDX: 00000000039c8441 RSI: ffffffff8dc93c7b RDI: ffffffff8be247e0
RBP: ffffffff8b302bd0 R08: ffffffff8b302bd0 R09: ffffffff8e33f2e0
R10: dffffc0000000000 R11: ffffed100f6b5317 R12: 0000000000000002
R13: ffffffff8e33f2e0 R14: 0000000000000000 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:867 [inline]
 batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:761 [inline]
 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:833 [inline]
 batadv_iv_ogm_schedule+0x454/0xf00 net/batman-adv/bat_iv_ogm.c:873
 batadv_iv_send_outstanding_bat_ogm_packet+0x6c6/0x7e0 net/batman-adv/bat_iv_ogm.c:1709
 process_one_work+0x93a/0x15a0 kernel/workqueue.c:3279
 process_scheduled_works kernel/workqueue.c:3362 [inline]
 worker_thread+0x9b0/0xee0 kernel/workqueue.c:3443
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
task:udevd           state:R  running task     stack:24824 pid:5199  tgid:5199  ppid:1      task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5258 [inline]
 __schedule+0x150e/0x5070 kernel/sched/core.c:6866
 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:7050
 preempt_schedule+0xae/0xc0 kernel/sched/core.c:7074
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0xfd/0x110 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 __wake_up_common_lock+0x190/0x1f0 kernel/sched/wait.c:127
 sock_def_readable+0x1eb/0x530 net/core/sock.c:3611
 __netlink_sendskb net/netlink/af_netlink.c:1263 [inline]
 netlink_sendskb+0xa1/0x140 net/netlink/af_netlink.c:1269
 netlink_unicast+0x397/0x9e0 net/netlink/af_netlink.c:1359
 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:737
 __sock_sendmsg net/socket.c:752 [inline]
 ____sys_sendmsg+0x577/0x880 net/socket.c:2610
 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2664
 __sys_sendmsg net/socket.c:2696 [inline]
 __do_sys_sendmsg net/socket.c:2701 [inline]
 __se_sys_sendmsg net/socket.c:2699 [inline]
 __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2699
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5f550a7407
RSP: 002b:00007fffb2b68ca0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5f55774880 RCX: 00007f5f550a7407
RDX: 0000000000000000 RSI: 00007fffb2b68d00 RDI: 0000000000000004
RBP: 00005581b3115c90 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000000cb
R13: 00005581b310e9e0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 9880 jiffies! g17169 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27280 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5258 [inline]
 __schedule+0x150e/0x5070 kernel/sched/core.c:6866
 __schedule_loop kernel/sched/core.c:6948 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6963
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:82
Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 0e 21 00 f3 0f 1e fa fb f4 <e9> 48 ee 02 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff8e007d80 EFLAGS: 000002c6
RAX: f85a9de81cba5100 RBX: ffffffff8197c6ba RCX: f85a9de81cba5100
RDX: 0000000000000001 RSI: ffffffff8daa9dc3 RDI: ffffffff8be247e0
RBP: ffffffff8e007ea8 R08: ffff8880b86336db R09: 1ffff110170c66db
R10: dffffc0000000000 R11: ffffed10170c66dc R12: ffffffff8fc3d070
R13: 1ffffffff1c129b8 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881259dc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34163fff CR3: 0000000033b54000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:767
 default_idle_call+0x73/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:191 [inline]
 do_idle+0x1ea/0x520 kernel/sched/idle.c:332
 cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:430
 rest_init+0x2de/0x300 init/main.c:758
 start_kernel+0x3ac/0x400 init/main.c:1208
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x143/0x1c0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x147
 </TASK>