reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 free_unref_folios+0xd0f/0x1950 mm/page_alloc.c:3022
 folios_put_refs+0x815/0x920 mm/folio.c:1036
 folio_batch_release include/linux/folio_batch.h:101 [inline]
 truncate_inode_pages_range+0xbbb/0xd80 mm/truncate.c:465
 kvm_gmem_punch_hole virt/kvm/guest_memfd.c:210 [inline]
 kvm_gmem_fallocate+0x5fe/0x850 virt/kvm/guest_memfd.c:281
 vfs_fallocate+0x663/0x7f0 fs/open.c:338
 madvise_remove mm/madvise.c:1047 [inline]
 madvise_vma_behavior+0x2a73/0x4160 mm/madvise.c:1360
 madvise_walk_vmas+0x576/0xb00 mm/madvise.c:1721
 madvise_do_behavior+0x385/0x540 mm/madvise.c:1916
 do_madvise+0x26f/0x330 mm/madvise.c:2014
 __do_sys_madvise mm/madvise.c:2023 [inline]
 __se_sys_madvise mm/madvise.c:2021 [inline]
 __x64_sys_madvise+0xa6/0xc0 mm/madvise.c:2021
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:155!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 17099 Comm: syz.4.2418 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:filemap_unaccount_folio+0x506/0x550 mm/filemap.c:155
Code: c4 be ff 48 89 df 48 c7 c6 40 42 79 8b e8 52 b5 1f ff 90 0f 0b e8 fa c3 be ff 48 89 df 48 c7 c6 00 40 79 8b e8 3b b5 1f ff 90 <0f> 0b e8 e3 c3 be ff 48 89 df 48 c7 c6 40 42 79 8b e8 24 b5 1f ff
RSP: 0018:ffffc900048bedc0 EFLAGS: 00010246
RAX: eacbfbfbecbc6900 RBX: ffffea0000d331c0 RCX: 0000000000000046
RDX: ffffc90010413000 RSI: ffffffff8db3258c RDI: ffff88802adc1f40
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff21646f0 R12: ffffea0000d331f0
R13: ffff88801e7d39c0 R14: 1ffffd40001a6638 R15: 1ffffd40001a6639
FS:  00007f243e5156c0(0000) GS:ffff8881249bc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000002c5030 CR3: 000000002c9e6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __filemap_remove_folio+0xc4/0x530 mm/filemap.c:226
 filemap_remove_folio+0xf1/0x3a0 mm/filemap.c:257
 truncate_inode_folio mm/truncate.c:176 [inline]
 truncate_inode_pages_range+0xada/0xd80 mm/truncate.c:461
 kvm_gmem_punch_hole virt/kvm/guest_memfd.c:210 [inline]
 kvm_gmem_fallocate+0x5fe/0x850 virt/kvm/guest_memfd.c:281
 vfs_fallocate+0x663/0x7f0 fs/open.c:338
 madvise_remove mm/madvise.c:1047 [inline]
 madvise_vma_behavior+0x2a73/0x4160 mm/madvise.c:1360
 madvise_walk_vmas+0x576/0xb00 mm/madvise.c:1721
 madvise_do_behavior+0x385/0x540 mm/madvise.c:1916
 do_madvise+0x26f/0x330 mm/madvise.c:2014
 __do_sys_madvise mm/madvise.c:2023 [inline]
 __se_sys_madvise mm/madvise.c:2021 [inline]
 __x64_sys_madvise+0xa6/0xc0 mm/madvise.c:2021
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f24402de1d9
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:00007f243e515028 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f2440566090 RCX: 00007f24402de1d9
RDX: 0000000000000009 RSI: 0000000000600003 RDI: 0000200000000000
RBP: 00007f2440375888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2440566128 R14: 00007f2440566090 R15: 00007fff4f963f68
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_unaccount_folio+0x506/0x550 mm/filemap.c:155
Code: c4 be ff 48 89 df 48 c7 c6 40 42 79 8b e8 52 b5 1f ff 90 0f 0b e8 fa c3 be ff 48 89 df 48 c7 c6 00 40 79 8b e8 3b b5 1f ff 90 <0f> 0b e8 e3 c3 be ff 48 89 df 48 c7 c6 40 42 79 8b e8 24 b5 1f ff
RSP: 0018:ffffc900048bedc0 EFLAGS: 00010246
RAX: eacbfbfbecbc6900 RBX: ffffea0000d331c0 RCX: 0000000000000046
RDX: ffffc90010413000 RSI: ffffffff8db3258c RDI: ffff88802adc1f40
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff21646f0 R12: ffffea0000d331f0
R13: ffff88801e7d39c0 R14: 1ffffd40001a6638 R15: 1ffffd40001a6639
FS:  00007f243e5156c0(0000) GS:ffff8881249bc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005563dc901950 CR3: 000000002c9e6000 CR4: 00000000003526f0