Extracting prog: 3m29.317371959s
Minimizing prog: 44m16.058273775s
Simplifying prog options: 0s
Extracting C: 32.060791656s
Simplifying C: 9m19.652264134s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20000, 0x0)
r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0)
ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x3)
ioctl$KVM_HYPERV_EVENTFD(r2, 0x400caed0, &(0x7f0000000400)={0x3, r0, 0xffffffff})

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20000, 0x0)
r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0)
ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x3)
ioctl$KVM_HYPERV_EVENTFD(r2, 0x400caed0, &(0x7f0000000400)={0x3, r0, 0xffffffff})

program crashed: WARNING in __kvm_gpc_refresh
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU
detailed listing:
executing program 0:
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20000, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x3)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20000, 0x0)
r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0)
ioctl$KVM_HYPERV_EVENTFD(r2, 0x400caed0, &(0x7f0000000400)={0x3, r0, 0xffffffff})

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20000, 0x0)
ioctl$KVM_CREATE_VCPU(0xffffffffffffffff, 0xae41, 0x3)
ioctl$KVM_HYPERV_EVENTFD(0xffffffffffffffff, 0x400caed0, &(0x7f0000000400)={0x3, r0, 0xffffffff})

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
r1 = ioctl$KVM_CREATE_VM(0xffffffffffffffff, 0xae01, 0x0)
ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x3)
ioctl$KVM_HYPERV_EVENTFD(r1, 0x400caed0, &(0x7f0000000400)={0x3, r0, 0xffffffff})

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20000, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x3)
ioctl$KVM_HYPERV_EVENTFD(r1, 0x400caed0, &(0x7f0000000400)={0x3, 0xffffffffffffffff, 0xffffffff})

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
r1 = openat$kvm(0xffffffffffffff9c, 0x0, 0x20000, 0x0)
r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0)
ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x3)
ioctl$KVM_HYPERV_EVENTFD(r2, 0x400caed0, &(0x7f0000000400)={0x3, r0, 0xffffffff})

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
socket$inet_tcp(0x2, 0x1, 0x0)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20000, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x3)
ioctl$KVM_HYPERV_EVENTFD(r1, 0x400caed0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
program crashed: WARNING in __kvm_gpc_refresh
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
program crashed: WARNING in __kvm_gpc_refresh
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
program crashed: WARNING in __kvm_gpc_refresh
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
program crashed: WARNING in __kvm_gpc_refresh
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
program crashed: WARNING in __kvm_gpc_refresh
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
program crashed: WARNING in __kvm_gpc_refresh
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
program crashed: WARNING in __kvm_gpc_refresh
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
program crashed: WARNING in __kvm_gpc_refresh
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20000, 0x0)
r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0)
ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x3)
ioctl$KVM_HYPERV_EVENTFD(r2, 0x400caed0, &(0x7f0000000400)={0x3, r0, 0xffffffff})

program crashed: WARNING in __kvm_gpc_refresh
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20000, 0x0)
r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0)
ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x3)
ioctl$KVM_HYPERV_EVENTFD(r2, 0x400caed0, &(0x7f0000000400)={0x3, r0, 0xffffffff})

program crashed: WARNING in __kvm_gpc_refresh
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_VCPU-ioctl$KVM_HYPERV_EVENTFD
detailed listing:
executing program 0:
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
r1 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x20000, 0x0)
r2 = ioctl$KVM_CREATE_VM(r1, 0xae01, 0x0)
ioctl$KVM_CREATE_VCPU(r2, 0xae41, 0x3)
ioctl$KVM_HYPERV_EVENTFD(r2, 0x400caed0, &(0x7f0000000400)={0x3, r0, 0xffffffff})

program crashed: WARNING in __kvm_gpc_refresh
validation run: crashed=true
reproducing took 1h1m57.794968415s
repro crashed as (corrupted=false):
kvm_intel: L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.
------------[ cut here ]------------
kvm_is_error_gpa(gpa) == kvm_is_error_hva(uhva)
WARNING: arch/x86/kvm/../../../virt/kvm/pfncache.c:267 at __kvm_gpc_refresh+0x1219/0x13a0 virt/kvm/pfncache.c:267, CPU#0: syz.0.17/6054
Modules linked in:
CPU: 0 UID: 0 PID: 6054 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:__kvm_gpc_refresh+0x1219/0x13a0 virt/kvm/pfncache.c:267
Code: c6 05 0a 60 ba 0e 01 48 c7 c7 80 ac ed 8d be 37 04 00 00 48 c7 c2 60 39 c2 8b e8 32 d6 60 00 e9 6a f1 ff ff e8 08 a0 84 00 90 <0f> 0b 90 bb ea ff ff ff e9 a4 f8 ff ff e8 f5 9f 84 00 90 0f 0b 90
RSP: 0018:ffffc900034171c0 EFLAGS: 00010293
RAX: ffffffff81410078 RBX: ffff888000000000 RCX: ffff888030ac0000
RDX: 0000000000000000 RSI: ffff888000000000 RDI: ffff888000000000
RBP: ffffc90003417348 R08: ffffffff90118eb7 R09: 1ffffffff20231d6
R10: dffffc0000000000 R11: fffffbfff20231d7 R12: ffff88802d0b9290
R13: dffffc0000000000 R14: ffff888000000000 R15: ffffffffffffff01
FS:  000055557eed2500(0000) GS:ffff888125463000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 0000000065eda000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kvm_gpc_refresh+0xe1/0x140 virt/kvm/pfncache.c:382
 kvm_xen_set_evtchn+0x163/0x230 arch/x86/kvm/xen.c:1943
 kvm_xen_hvm_evtchn_send+0x120/0x1e0 arch/x86/kvm/xen.c:2034
 kvm_arch_vm_ioctl+0xfb1/0x1a10 arch/x86/kvm/x86.c:7519
 kvm_vm_ioctl+0x905/0xd50 virt/kvm/kvm_main.c:5402
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd7ff59bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff1bc8be18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd7ff815fa0 RCX: 00007fd7ff59bf79
RDX: 0000200000000400 RSI: 00000000400caed0 RDI: 0000000000000005
RBP: 00007fd7ff6327e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd7ff815fac R14: 00007fd7ff815fa0 R15: 00007fd7ff815fa0
 </TASK>

final repro crashed as (corrupted=false):
kvm_intel: L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.
------------[ cut here ]------------
kvm_is_error_gpa(gpa) == kvm_is_error_hva(uhva)
WARNING: arch/x86/kvm/../../../virt/kvm/pfncache.c:267 at __kvm_gpc_refresh+0x1219/0x13a0 virt/kvm/pfncache.c:267, CPU#0: syz.0.17/6054
Modules linked in:
CPU: 0 UID: 0 PID: 6054 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:__kvm_gpc_refresh+0x1219/0x13a0 virt/kvm/pfncache.c:267
Code: c6 05 0a 60 ba 0e 01 48 c7 c7 80 ac ed 8d be 37 04 00 00 48 c7 c2 60 39 c2 8b e8 32 d6 60 00 e9 6a f1 ff ff e8 08 a0 84 00 90 <0f> 0b 90 bb ea ff ff ff e9 a4 f8 ff ff e8 f5 9f 84 00 90 0f 0b 90
RSP: 0018:ffffc900034171c0 EFLAGS: 00010293
RAX: ffffffff81410078 RBX: ffff888000000000 RCX: ffff888030ac0000
RDX: 0000000000000000 RSI: ffff888000000000 RDI: ffff888000000000
RBP: ffffc90003417348 R08: ffffffff90118eb7 R09: 1ffffffff20231d6
R10: dffffc0000000000 R11: fffffbfff20231d7 R12: ffff88802d0b9290
R13: dffffc0000000000 R14: ffff888000000000 R15: ffffffffffffff01
FS:  000055557eed2500(0000) GS:ffff888125463000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 0000000065eda000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kvm_gpc_refresh+0xe1/0x140 virt/kvm/pfncache.c:382
 kvm_xen_set_evtchn+0x163/0x230 arch/x86/kvm/xen.c:1943
 kvm_xen_hvm_evtchn_send+0x120/0x1e0 arch/x86/kvm/xen.c:2034
 kvm_arch_vm_ioctl+0xfb1/0x1a10 arch/x86/kvm/x86.c:7519
 kvm_vm_ioctl+0x905/0xd50 virt/kvm/kvm_main.c:5402
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd7ff59bf79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff1bc8be18 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd7ff815fa0 RCX: 00007fd7ff59bf79
RDX: 0000200000000400 RSI: 00000000400caed0 RDI: 0000000000000005
RBP: 00007fd7ff6327e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd7ff815fac R14: 00007fd7ff815fa0 R15: 00007fd7ff815fa0
 </TASK>