syzbot

------------[ cut here ]------------
pvqspinlock: lock 0xffff88810d34e750 has corrupted value 0x0!
WARNING: CPU: 1 PID: 3173 at kernel/locking/qspinlock_paravirt.h:506 __pv_queued_spin_unlock_slowpath+0x242/0x300 kernel/locking/qspinlock_paravirt.h:504
Modules linked in:
CPU: 1 UID: 0 PID: 3173 Comm: syz.5.884 Not tainted syzkaller #0 de3e1d1c5728fabb050931035751e453f935abb5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__pv_queued_spin_unlock_slowpath+0x242/0x300 kernel/locking/qspinlock_paravirt.h:504
Code: e8 63 5f 3c fc 48 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 ac 00 00 00 8b 13 48 c7 c7 20 ce e8 85 48 89 de e8 2e b5 60 fb <0f> 0b eb 96 48 c7 c7 00 4c 52 87 4c 89 f6 4c 89 fa e8 18 17 44 fd
RSP: 0018:ffffc90004f36be0 EFLAGS: 00010246
RAX: 4a1c38bb07ad1b00 RBX: ffff88810d34e750 RCX: ffff88810334cc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90004f36c08 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff0e9ef8c R12: ffff888122585200
R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff920009e6d98
FS:  00007f35fa4e56c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000116ffe000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 __raw_callee_save___pv_queued_spin_unlock_slowpath+0x19/0x40
 .slowpath+0x9/0x13
 pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:589 [inline]
 queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline]
 do_raw_spin_unlock include/linux/spinlock.h:204 [inline]
 __raw_spin_unlock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_unlock+0x45/0x60 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 hv_tlb_flush_enqueue+0x1b4/0x290 arch/x86/kvm/hyperv.c:1961
 kvm_hv_flush_tlb+0xa0c/0x1f10 arch/x86/kvm/hyperv.c:2141
 kvm_hv_hypercall+0xfc8/0x1ca0 arch/x86/kvm/hyperv.c:-1
 kvm_emulate_hypercall+0xe6/0x450 arch/x86/kvm/x86.c:10147
 __vmx_handle_exit arch/x86/kvm/vmx/vmx.c:6597 [inline]
 vmx_handle_exit+0x12c0/0x1b10 arch/x86/kvm/vmx/vmx.c:6614
 vcpu_enter_guest arch/x86/kvm/x86.c:11169 [inline]
 vcpu_run+0x49f7/0x7840 arch/x86/kvm/x86.c:11330
 kvm_arch_vcpu_ioctl_run+0x1167/0x1bd0 arch/x86/kvm/x86.c:11654
 kvm_vcpu_ioctl+0xa48/0x1000 virt/kvm/kvm_main.c:4515
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x135/0x1b0 fs/ioctl.c:893
 __x64_sys_ioctl+0x7f/0xa0 fs/ioctl.c:893
 x64_sys_call+0x1878/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f35f959c819
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:00007f35fa4e5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f35f9815fa0 RCX: 00007f35f959c819
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
RBP: 00007f35f9632c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f35f9816038 R14: 00007f35f9815fa0 R15: 00007ffd72c62838
 </TASK>
---[ end trace 0000000000000000 ]---