------------[ cut here ]------------ pvqspinlock: lock 0xffff888113f7a750 has corrupted value 0x0! WARNING: CPU: 0 PID: 349 at kernel/locking/qspinlock_paravirt.h:506 __pv_queued_spin_unlock_slowpath+0x242/0x300 kernel/locking/qspinlock_paravirt.h:504 Modules linked in: CPU: 0 UID: 0 PID: 349 Comm: syz.3.11 Not tainted syzkaller #0 5683c47b7b818fc12acfc4a1bdd76955bb3d994d Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:__pv_queued_spin_unlock_slowpath+0x242/0x300 kernel/locking/qspinlock_paravirt.h:504 Code: e8 83 01 36 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 a0 d1 e8 85 48 89 de e8 0e f9 59 fb <0f> 0b eb 96 48 c7 c7 40 6c 52 87 4c 89 f6 4c 89 fa e8 88 d2 3d fd RSP: 0018:ffffc9000d12ebe0 EFLAGS: 00010246 RAX: a32bcbf9e253ac00 RBX: ffff888113f7a750 RCX: 0000000000080000 RDX: ffffc90001ea3000 RSI: 000000000004f040 RDI: 000000000004f041 RBP: ffffc9000d12ec08 R08: ffffc9000d12e8c7 R09: 1ffff92001a25d18 R10: dffffc0000000000 R11: fffff52001a25d19 R12: ffff8881301d3080 R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff92001a25d98 FS: 00007fd93a2dc6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000112fca000 CR4: 00000000003526b0 Call Trace: __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+0x4cd4/0x78e0 arch/x86/kvm/x86.c:11329 kvm_arch_vcpu_ioctl_run+0x1167/0x1bd0 arch/x86/kvm/x86.c:11653 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+0x132/0x1b0 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: 0033:0x7fd93939ce59 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:00007fd93a2dc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd939615fa0 RCX: 00007fd93939ce59 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000008 RBP: 00007fd939432d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd939616038 R14: 00007fd939615fa0 R15: 00007ffd7d83f8b8 ---[ end trace 0000000000000000 ]---