Extracting prog: 5m33.289340369s
Minimizing prog: 42m12.438592086s
Simplifying prog options: 0s
Extracting C: 1m23.83079223s
Simplifying C: 9m32.190326551s


extracting reproducer from 12 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 45s
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, &(0x7f00000000c0)=[@code={0xa, 0x18, {"7f2003d5"}}], 0x18}, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)

program did not crash
single: failed to extract reproducer
bisect: bisecting 12 programs with base timeout 45s
testing program (duration=48s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 11, 4, 6, 13, 5, 5, 2, 8, 5, 8, 5]
detailed listing:
executing program 1:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x1)
ioctl$KVM_ARM_VCPU_INIT(r2, 0x4020aeae, &(0x7f0000000080)={0x5, 0x8})
ioctl$KVM_SET_ONE_REG(r2, 0x4010aeac, &(0x7f0000000280)=@arm64_core={0x6030000000100022, &(0x7f0000000300)=0x100})
executing program 1:
r0 = openat$kvm(0x0, &(0x7f0000000080), 0x0, 0x0)
r1 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0)
r3 = ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x0)
r4 = mmap$KVM_VCPU(&(0x7f0000009000/0x1000)=nil, 0x930, 0x280000b, 0x11, r3, 0x0)
syz_memcpy_off$KVM_EXIT_HYPERCALL(r4, 0x20, &(0x7f0000000080)="fb0149dd033be3ac2cc4a29ea6abf4e7454e37c4b85400005a9610fbff67521ce16f8f1f449a7a835673312b54ebb2aa76c869d22627e700", 0x0, 0x29)
mmap$KVM_VCPU(&(0x7f0000000000/0xa000)=nil, 0x930, 0x1000001, 0x11, r3, 0x0)
r5 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r6 = syz_kvm_setup_syzos_vm$arm64(r5, &(0x7f0000c00000/0x400000)=nil)
r7 = syz_kvm_add_vcpu$arm64(r6, &(0x7f0000000280)={0x0, 0x0}, 0x0, 0x0)
ioctl$KVM_SET_VCPU_EVENTS(r7, 0x4040aea0, &(0x7f0000000040)=@arm64={0xf, 0x2, 0x9, '\x00', 0x8000})
executing program 1:
munmap(&(0x7f0000470000/0x400000)=nil, 0xe06500)
mmap$KVM_VCPU(&(0x7f0000c2d000/0x2000)=nil, 0x930, 0x2, 0x32e7851d6de9e532, 0xffffffffffffffff, 0x0)
munmap(&(0x7f0000000000/0xc00000)=nil, 0xc00000)
openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0), 0x40000, 0x0)
executing program 1:
r0 = openat$kvm(0x0, &(0x7f0000000080), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x2041, 0x0)
r3 = ioctl$KVM_GET_VCPU_MMAP_SIZE(r2, 0xae04)
mmap$KVM_VCPU(&(0x7f0000000000/0x4000)=nil, r3, 0x5, 0x4f831, 0xffffffffffffffff, 0x0)
ioctl$KVM_IOEVENTFD(r1, 0x4040ae79, 0x0)
executing program 1:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x3)
r3 = openat$kvm(0x0, &(0x7f0000000140), 0x0, 0x0)
r4 = ioctl$KVM_CREATE_VM(r3, 0xae01, 0x0)
r5 = syz_kvm_setup_syzos_vm$arm64(r4, &(0x7f0000c00000/0x400000)=nil)
r6 = syz_kvm_add_vcpu$arm64(r5, &(0x7f0000000180)={0x0, &(0x7f00000001c0)=[@msr={0x14, 0x20, {0x603000000013dce8, 0x8000}}], 0x20}, &(0x7f0000000300)=[@featur1={0x1, 0x8}], 0x1)
ioctl$KVM_SET_DEVICE_ATTR_vcpu(r6, 0x4018aee1, &(0x7f0000000340)=@attr_pmu_init)
ioctl$KVM_RUN(r6, 0xae80, 0x0)
ioctl$KVM_ARM_VCPU_INIT(r2, 0x4020aeae, &(0x7f0000000200)={0x5, 0x8})
ioctl$KVM_SET_ONE_REG(r2, 0x4010aeac, &(0x7f00000000c0)=@arm64_sys={0x603000000013dce0, &(0x7f0000000000)=0x4401})
ioctl$KVM_SET_DEVICE_ATTR_vcpu(r2, 0x4018aee1, &(0x7f00000000c0)=@attr_pmu_init)
ioctl$KVM_RUN(r2, 0xae80, 0x0)
executing program 1:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, &(0x7f00000000c0)=[@code={0xa, 0x18, {"7f2003d5"}}], 0x18}, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, &(0x7f00000000c0)=[@smc={0x1e, 0x40, {0x86000001, [0x6, 0x4, 0x2, 0x8, 0x8000]}}], 0x40}, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)
executing program 0:
mmap$KVM_VCPU(&(0x7f0000ec1000/0x1000)=nil, 0x930, 0x0, 0x9032, 0xffffffffffffffff, 0x0)
mmap$KVM_VCPU(&(0x7f0000ec1000/0x1000)=nil, 0x930, 0x3, 0x9032, 0xffffffffffffffff, 0x0)
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, 0x0}, &(0x7f0000000100)=[@featur1={0x1, 0x8}], 0x1)
ioctl$KVM_SET_DEVICE_ATTR_vcpu(r3, 0x4018aee1, &(0x7f0000000140)=@attr_pmu_init)
ioctl$KVM_RUN(r3, 0xae80, 0x0)
r4 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x1)
ioctl$KVM_SET_DEVICE_ATTR_vcpu(r4, 0x4018aee1, &(0x7f0000000380)=@attr_pmu_filter={0x0, 0x0, 0x2, &(0x7f0000000000)={0x78fe, 0x7}})
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000280), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x3)
ioctl$KVM_ARM_VCPU_INIT(r2, 0x4020aeae, &(0x7f0000000200)={0x5, 0x8})
ioctl$KVM_SET_ONE_REG(r2, 0x4010aeac, &(0x7f00000000c0)=@arm64_fp_extra={0x60200000001000d4, &(0x7f00000001c0)=0x653})
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x80281, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x1)
r3 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
syz_kvm_vgic_v3_setup(r1, 0x0, 0x0)
close(r1)
close(r3)
close(r2)
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000080), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f00000000c0)={0x0, &(0x7f0000000100)=[@mrs={0xbe, 0x18, {0x603000000013c2a8}}], 0x18}, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)

program did not crash
replaying the whole log did not cause a kernel crash
single: executing 1 programs separately with timeout 5m0s
testing program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, &(0x7f00000000c0)=[@code={0xa, 0x18, {"7f2003d5"}}], 0x18}, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)

program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, &(0x7f00000000c0)=[@code={0xa, 0x18, {"7f2003d5"}}], 0x18}, 0x0, 0x0)

program did not crash
testing program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
ioctl$KVM_RUN(0xffffffffffffffff, 0xae80, 0x0)

program did not crash
testing program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r1 = syz_kvm_add_vcpu$arm64(0x0, &(0x7f0000000080)={0x0, &(0x7f00000000c0)=[@code={0xa, 0x18, {"7f2003d5"}}], 0x18}, 0x0, 0x0)
ioctl$KVM_RUN(r1, 0xae80, 0x0)

program did not crash
testing program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r0 = syz_kvm_setup_syzos_vm$arm64(0xffffffffffffffff, &(0x7f0000c00000/0x400000)=nil)
r1 = syz_kvm_add_vcpu$arm64(r0, &(0x7f0000000080)={0x0, &(0x7f00000000c0)=[@code={0xa, 0x18, {"7f2003d5"}}], 0x18}, 0x0, 0x0)
ioctl$KVM_RUN(r1, 0xae80, 0x0)

program did not crash
testing program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = ioctl$KVM_CREATE_VM(0xffffffffffffffff, 0xae01, 0x2f)
r1 = syz_kvm_setup_syzos_vm$arm64(r0, &(0x7f0000c00000/0x400000)=nil)
r2 = syz_kvm_add_vcpu$arm64(r1, &(0x7f0000000080)={0x0, &(0x7f00000000c0)=[@code={0xa, 0x18, {"7f2003d5"}}], 0x18}, 0x0, 0x0)
ioctl$KVM_RUN(r2, 0xae80, 0x0)

program did not crash
testing program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, 0x0, 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, &(0x7f00000000c0)=[@code={0xa, 0x18, {"7f2003d5"}}], 0x18}, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)

program did not crash
testing program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, 0x0, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)

program did not crash
testing program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, 0x0}, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)

program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
extracting C reproducer
testing compiled C program (duration=5m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
simplifying C reproducer
testing compiled C program (duration=5m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:2 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
testing compiled C program (duration=5m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
testing compiled C program (duration=5m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
testing compiled C program (duration=5m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
testing compiled C program (duration=5m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
testing compiled C program (duration=5m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
testing program (duration=5m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, 0x0}, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)

program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
validation run: crashed=true
testing program (duration=5m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, 0x0}, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)

program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
validation run: crashed=true
testing program (duration=5m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-syz_kvm_setup_syzos_vm$arm64-syz_kvm_add_vcpu$arm64-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0x0, &(0x7f0000000040), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x2f)
r2 = syz_kvm_setup_syzos_vm$arm64(r1, &(0x7f0000c00000/0x400000)=nil)
r3 = syz_kvm_add_vcpu$arm64(r2, &(0x7f0000000080)={0x0, 0x0}, 0x0, 0x0)
ioctl$KVM_RUN(r3, 0xae80, 0x0)

program crashed: KASAN: invalid-access Read in __kvm_pgtable_walk
validation run: crashed=true
reproducing took 1h7m4.858703789s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: invalid-access in __kvm_pgtable_visit arch/arm64/kvm/hyp/pgtable.c:161 [inline]
BUG: KASAN: invalid-access in __kvm_pgtable_walk+0x110/0x2d0 arch/arm64/kvm/hyp/pgtable.c:237
Read at addr f3f0000013c9e000 by task syz.2.17/3583
Pointer tag: [f3], memory tag: [fe]

CPU: 1 UID: 0 PID: 3583 Comm: syz.2.17 Not tainted syzkaller #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
Call trace:
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x78/0x90 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x108/0x61c mm/kasan/report.c:482
 kasan_report+0x88/0xac mm/kasan/report.c:595
 report_tag_fault arch/arm64/mm/fault.c:326 [inline]
 do_tag_recovery arch/arm64/mm/fault.c:338 [inline]
 __do_kernel_fault+0x170/0x1c8 arch/arm64/mm/fault.c:380
 do_bad_area+0x68/0x78 arch/arm64/mm/fault.c:480
 do_tag_check_fault+0x34/0x44 arch/arm64/mm/fault.c:853
 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:929
 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:481
 el1h_64_sync_handler+0x50/0xac arch/arm64/kernel/entry-common.c:597
 el1h_64_sync+0x6c/0x70 arch/arm64/kernel/entry.S:591
 __kvm_pgtable_visit arch/arm64/kvm/hyp/pgtable.c:161 [inline] (P)
 __kvm_pgtable_walk+0x110/0x2d0 arch/arm64/kvm/hyp/pgtable.c:237 (P)
 _kvm_pgtable_walk arch/arm64/kvm/hyp/pgtable.c:260 [inline]
 kvm_pgtable_walk+0xd0/0x164 arch/arm64/kvm/hyp/pgtable.c:283
 kvm_pgtable_stage2_destroy_range+0x3c/0x70 arch/arm64/kvm/hyp/pgtable.c:1563
 stage2_destroy_range arch/arm64/kvm/mmu.c:924 [inline]
 kvm_stage2_destroy+0x74/0xd0 arch/arm64/kvm/mmu.c:935
 kvm_free_stage2_pgd+0x4c/0x84 arch/arm64/kvm/mmu.c:1112
 kvm_uninit_stage2_mmu+0x1c/0x34 arch/arm64/kvm/mmu.c:1023
 kvm_arch_flush_shadow_all+0x6c/0x84 arch/arm64/kvm/nested.c:1113
 kvm_flush_shadow_all virt/kvm/kvm_main.c:343 [inline]
 kvm_mmu_notifier_release+0x30/0x84 virt/kvm/kvm_main.c:884
 mmu_notifier_unregister+0x5c/0x11c mm/mmu_notifier.c:815
 kvm_destroy_vm+0x148/0x2b0 virt/kvm/kvm_main.c:1287
 kvm_put_kvm virt/kvm/kvm_main.c:1344 [inline]
 kvm_vm_release+0x80/0xb0 virt/kvm/kvm_main.c:1367
 __fput+0xcc/0x2dc fs/file_table.c:468
 ____fput+0x14/0x20 fs/file_table.c:496
 task_work_run+0x78/0xd4 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x13c/0x16c arch/arm64/kernel/entry-common.c:155
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline]
 el0_svc+0x108/0x10c arch/arm64/kernel/entry-common.c:880
 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:596

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53c9e
flags: 0x1fff00000000000(node=0|zone=0|lastcpupid=0x7ff|kasantag=0xc)
raw: 01fff00000000000 ffffc1ffc01969c8 ffffc1ffc04f2308 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 fff0000013c9de00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
 fff0000013c9df00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
>fff0000013c9e000: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
                   ^
 fff0000013c9e100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
 fff0000013c9e200: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: invalid-access in __kvm_pgtable_visit arch/arm64/kvm/hyp/pgtable.c:161 [inline]
BUG: KASAN: invalid-access in __kvm_pgtable_walk+0x110/0x2d0 arch/arm64/kvm/hyp/pgtable.c:237
Read at addr f3f0000013c9e000 by task syz.2.17/3583
Pointer tag: [f3], memory tag: [fe]

CPU: 1 UID: 0 PID: 3583 Comm: syz.2.17 Not tainted syzkaller #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
Call trace:
 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x78/0x90 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x108/0x61c mm/kasan/report.c:482
 kasan_report+0x88/0xac mm/kasan/report.c:595
 report_tag_fault arch/arm64/mm/fault.c:326 [inline]
 do_tag_recovery arch/arm64/mm/fault.c:338 [inline]
 __do_kernel_fault+0x170/0x1c8 arch/arm64/mm/fault.c:380
 do_bad_area+0x68/0x78 arch/arm64/mm/fault.c:480
 do_tag_check_fault+0x34/0x44 arch/arm64/mm/fault.c:853
 do_mem_abort+0x44/0x94 arch/arm64/mm/fault.c:929
 el1_abort+0x40/0x60 arch/arm64/kernel/entry-common.c:481
 el1h_64_sync_handler+0x50/0xac arch/arm64/kernel/entry-common.c:597
 el1h_64_sync+0x6c/0x70 arch/arm64/kernel/entry.S:591
 __kvm_pgtable_visit arch/arm64/kvm/hyp/pgtable.c:161 [inline] (P)
 __kvm_pgtable_walk+0x110/0x2d0 arch/arm64/kvm/hyp/pgtable.c:237 (P)
 _kvm_pgtable_walk arch/arm64/kvm/hyp/pgtable.c:260 [inline]
 kvm_pgtable_walk+0xd0/0x164 arch/arm64/kvm/hyp/pgtable.c:283
 kvm_pgtable_stage2_destroy_range+0x3c/0x70 arch/arm64/kvm/hyp/pgtable.c:1563
 stage2_destroy_range arch/arm64/kvm/mmu.c:924 [inline]
 kvm_stage2_destroy+0x74/0xd0 arch/arm64/kvm/mmu.c:935
 kvm_free_stage2_pgd+0x4c/0x84 arch/arm64/kvm/mmu.c:1112
 kvm_uninit_stage2_mmu+0x1c/0x34 arch/arm64/kvm/mmu.c:1023
 kvm_arch_flush_shadow_all+0x6c/0x84 arch/arm64/kvm/nested.c:1113
 kvm_flush_shadow_all virt/kvm/kvm_main.c:343 [inline]
 kvm_mmu_notifier_release+0x30/0x84 virt/kvm/kvm_main.c:884
 mmu_notifier_unregister+0x5c/0x11c mm/mmu_notifier.c:815
 kvm_destroy_vm+0x148/0x2b0 virt/kvm/kvm_main.c:1287
 kvm_put_kvm virt/kvm/kvm_main.c:1344 [inline]
 kvm_vm_release+0x80/0xb0 virt/kvm/kvm_main.c:1367
 __fput+0xcc/0x2dc fs/file_table.c:468
 ____fput+0x14/0x20 fs/file_table.c:496
 task_work_run+0x78/0xd4 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x13c/0x16c arch/arm64/kernel/entry-common.c:155
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline]
 el0_svc+0x108/0x10c arch/arm64/kernel/entry-common.c:880
 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:596

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53c9e
flags: 0x1fff00000000000(node=0|zone=0|lastcpupid=0x7ff|kasantag=0xc)
raw: 01fff00000000000 ffffc1ffc01969c8 ffffc1ffc04f2308 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 fff0000013c9de00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
 fff0000013c9df00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
>fff0000013c9e000: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
                   ^
 fff0000013c9e100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
 fff0000013c9e200: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
==================================================================