------------[ 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+0x1b24/0x24a0 virt/kvm/pfncache.c:267, CPU#3: syz.5.3367/20154 Modules linked in: CPU: 3 UID: 0 PID: 20154 Comm: syz.5.3367 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:__kvm_gpc_refresh+0x1b24/0x24a0 virt/kvm/pfncache.c:267 Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 6e 09 00 00 48 8b 04 24 31 db 48 8b a8 10 01 00 00 e9 f2 ef ff ff e8 3d df 84 00 90 <0f> 0b 90 e9 92 f7 ff ff e8 2f df 84 00 48 85 db 0f 84 5a ec ff ff RSP: 0018:ffffc9000dcff0f8 EFLAGS: 00010287 RAX: 00000000000006fc RBX: ffffffffffffffff RCX: ffffc900269c9000 RDX: 0000000000080000 RSI: ffffffff81836443 RDI: ffff888029388000 RBP: ffffffffffffff01 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888000000000 R13: ffff888000000001 R14: ffff888000000000 R15: ffffc9000dcff310 FS: 0000000000000000(0000) GS:ffff888097440000(0063) knlGS:00000000f549db40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f549cff4 CR3: 000000006b917000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000f0163 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: kvm_gpc_refresh+0xc9/0x190 virt/kvm/pfncache.c:382 kvm_xen_set_evtchn.part.0+0x168/0x230 arch/x86/kvm/xen.c:1942 kvm_xen_set_evtchn arch/x86/kvm/xen.c:2043 [inline] kvm_xen_hvm_evtchn_send+0x22f/0x290 arch/x86/kvm/xen.c:2033 kvm_arch_vm_ioctl+0x13ac/0x18d0 arch/x86/kvm/x86.c:7518 kvm_vm_ioctl+0x1564/0x4080 virt/kvm/kvm_main.c:5387 kvm_vm_compat_ioctl+0x2f7/0x3f0 virt/kvm/kvm_main.c:5467 __do_compat_sys_ioctl fs/ioctl.c:695 [inline] __se_compat_sys_ioctl fs/ioctl.c:638 [inline] __ia32_compat_sys_ioctl+0x2cf/0x360 fs/ioctl.c:638 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xe3/0x8c0 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x32/0x70 arch/x86/entry/syscall_32.c:332 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf70aef6c Code: d2 74 05 c1 e8 0c 89 02 8b 5d fc 31 c0 c9 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 2e 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 58 b8 RSP: 002b:00000000f549d50c EFLAGS: 00000292 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00000000400caed0 RDX: 0000000080000980 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: d2 74 05 c1 shlb %cl,-0x3f(%rbp,%rax,1) 4: e8 0c 89 02 8b call 0x8b028915 9: 5d pop %rbp a: fc cld b: 31 c0 xor %eax,%eax d: c9 leave e: c3 ret f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 0f 1f 00 nopl (%rax) 21: 51 push %rcx 22: 52 push %rdx 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 ret 2e: 90 nop 2f: 2e 8d b4 26 00 00 00 cs lea 0x0(%rsi,%riz,1),%esi 36: 00 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 3e: 58 pop %rax 3f: b8 .byte 0xb8