Extracting prog: 5m7.417678538s
Minimizing prog: 1h45m0.628297171s
Simplifying prog options: 0s
Extracting C: 2m33.661720015s
Simplifying C: 55m39.133689246s


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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
ioctl$KVM_RUN(r2, 0xae80, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)

program crashed: INFO: rcu detected stall in corrupted
single: successfully extracted reproducer
found reproducer with 11 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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
ioctl$KVM_RUN(r2, 0xae80, 0x0)

program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
prctl$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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
getpid()
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r2 = getpid()
sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r0 = ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r1 = getpid()
sched_setscheduler(r1, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r0, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = ioctl$KVM_CREATE_VM(0xffffffffffffffff, 0xae01, 0x0)
r1 = ioctl$KVM_CREATE_VCPU(r0, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r2 = getpid()
sched_setscheduler(r2, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r0, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r1, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, 0x0, 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, 0x0, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, 0x0)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(0x0, 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, 0x0, 0x0, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, 0x0, 0x0, 0x43, 0x0, 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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in corrupted
simplifying C reproducer
testing compiled C 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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C 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}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in gc_worker
a never seen crash title: INFO: rcu detected stall in gc_worker, ignore
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:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in corrupted
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:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: WARNING in rcu_check_gp_start_stall
a never seen crash title: WARNING in rcu_check_gp_start_stall, ignore
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:false NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in corrupted
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in corrupted
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in corrupted
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in corrupted
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in corrupted
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in corrupted
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in corrupted
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: INFO: rcu detected stall in corrupted
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
r3 = getpid()
sched_setscheduler(r3, 0x2, &(0x7f0000000200)=0x4)
syz_open_dev$evdev(&(0x7f0000000080), 0x2, 0x842)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0}], 0x1, 0x4, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, 0x0}], 0x1, 0x43, 0x0, 0x0)
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
reproducing took 2h58m11.635019355s
repro crashed as (corrupted=true):
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=12117, q=656 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294960005-4294949503), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g12117 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:27168 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: 6168 Comm: syz.2.32 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:vmx_vmexit+0x0/0xd0
Code: 0f 1f 84 00 00 00 00 00 f7 44 24 08 01 00 00 00 74 08 0f 01 c3 e9 cf 00 00 00 0f 01 c2 e9 c7 00 00 00 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 50 48 8b 44 24 08 8f 00 48 89 48 08 48 89 50 10 48 89
RSP: 0018:ffffc900042ff3b0 EFLAGS: 00000002
RAX: 00000000e0000031 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f00d55fe6c0(0000) GS:ffff8881259e1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000000b CR3: 000000007d3ea000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 </TASK>

report is corrupted, running repro again
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:false NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-prlimit64-getpid-sched_setscheduler-syz_open_dev$evdev-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_RUN-prctl$PR_SCHED_CORE
program crashed: no output from test machine
final repro crashed as (corrupted=false):