==================================================================
BUG: KASAN: use-after-free in kvm_setup_guest_pvclock+0x5bf/0x660 arch/x86/kvm/x86.c:3272
Read of size 4 at addr ffff88805574d320 by task syz.1.632/8749

CPU: 0 UID: 0 PID: 8749 Comm: syz.1.632 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x13d/0x4b0 mm/kasan/report.c:482
 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595
 kvm_setup_guest_pvclock+0x5bf/0x660 arch/x86/kvm/x86.c:3272
 kvm_guest_time_update+0xa11/0x10b0 arch/x86/kvm/x86.c:3408
 vcpu_enter_guest arch/x86/kvm/x86.c:11149 [inline]
 vcpu_run+0x1d44/0x5de0 arch/x86/kvm/x86.c:11707
 kvm_arch_vcpu_ioctl_run+0x103d/0x1960 arch/x86/kvm/x86.c:12062
 kvm_vcpu_ioctl+0x730/0x1700 virt/kvm/kvm_main.c:4470
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fce4db9de59
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:00007fce4eb10028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fce4de26090 RCX: 00007fce4db9de59
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005
RBP: 00007fce4dc33e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fce4de26128 R14: 00007fce4de26090 R15: 00007ffd4f5d1078
 </TASK>

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x200000000 pfn:0x5574d
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 ffffea0000f2be88 ffff88806a4414b0 0000000000000000
raw: 0000000200000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_ZERO|__GFP_COMP), pid 8743, tgid 8743 (syz.1.632), ts 103982545948, free_ts 103990385073
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0xf48/0x3530 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x299/0x2dc0 mm/page_alloc.c:5304
 alloc_pages_mpol+0x1fb/0x540 mm/mempolicy.c:2490
 folio_alloc_mpol_noprof+0x36/0x260 mm/mempolicy.c:2509
 vma_alloc_folio_noprof+0xed/0x1d0 mm/mempolicy.c:2544
 folio_prealloc mm/memory.c:1207 [inline]
 alloc_anon_folio mm/memory.c:5247 [inline]
 do_anonymous_page+0xb2b/0x2080 mm/memory.c:5342
 do_pte_missing mm/memory.c:4564 [inline]
 handle_pte_fault mm/memory.c:6379 [inline]
 __handle_mm_fault+0x1d2c/0x2a00 mm/memory.c:6517
 handle_mm_fault+0x37b/0xa30 mm/memory.c:6686
 do_user_addr_fault+0x5a3/0x12f0 arch/x86/mm/fault.c:1343
 handle_page_fault arch/x86/mm/fault.c:1483 [inline]
 exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1536
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
page last free pid 8745 tgid 8743 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 __free_frozen_pages+0x79f/0x1090 mm/page_alloc.c:2950
 __folio_put+0x3b4/0x5f0 mm/swap.c:112
 folio_put include/linux/mm.h:2124 [inline]
 put_page include/linux/mm.h:2193 [inline]
 kvm_release_page_clean virt/kvm/kvm_main.c:2813 [inline]
 kvm_release_page_clean+0x1dc/0x250 virt/kvm/kvm_main.c:2807
 hva_to_pfn_retry virt/kvm/pfncache.c:246 [inline]
 __kvm_gpc_refresh+0x1a63/0x22d0 virt/kvm/pfncache.c:330
 __kvm_gpc_activate+0x2ab/0x490 virt/kvm/pfncache.c:424
 kvm_gpc_activate_hva+0x73/0xa0 virt/kvm/pfncache.c:444
 kvm_xen_vcpu_set_attr+0xfa0/0x1350 arch/x86/kvm/xen.c:938
 kvm_arch_vcpu_ioctl+0xf73/0x57a0 arch/x86/kvm/x86.c:6612
 kvm_vcpu_ioctl+0x8a0/0x1700 virt/kvm/kvm_main.c:4647
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88805574d200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88805574d280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88805574d300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                               ^
 ffff88805574d380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88805574d400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================