f2fs_write_end_io+0x495/0x810 fs/f2fs/data.c:353
 __submit_merged_bio+0x27a/0x6a0 fs/f2fs/data.c:543
 __f2fs_submit_merged_write fs/f2fs/data.c:638 [inline]
 __submit_merged_write_cond+0x255/0x530 fs/f2fs/data.c:660
 f2fs_submit_merged_write_cond fs/f2fs/data.c:677 [inline]
 f2fs_write_cache_pages fs/f2fs/data.c:3201 [inline]
 __f2fs_write_data_pages fs/f2fs/data.c:3282 [inline]
 f2fs_write_data_pages+0x261d/0x3000 fs/f2fs/data.c:3309
 do_writepages+0x32b/0x550 mm/page-writeback.c:2636
 __writeback_single_inode+0x145/0xff0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x6b5/0x1000 fs/fs-writeback.c:1976
 wb_writeback+0x43b/0xaf0 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x409/0xef0 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
F2FS-fs (loop0): Remounting filesystem read-only
page: refcount:3 mapcount:0 mapping:ffff888052c48b10 index:0xb pfn:0x42b99
memcg:ffff888030ad0d00
aops:f2fs_node_aops ino:1
flags: 0x4fff3800000423c(referenced|uptodate|dirty|lru|workingset|private|node=1|zone=1|lastcpupid=0x7ff)
raw: 04fff3800000423c ffffea00010f92c8 ffffea00010c2948 ffff888052c48b10
raw: 000000000000000b 0000000000000009 00000003ffffffff ffff888030ad0d00
page dumped because: VM_BUG_ON_FOLIO(!folio_test_locked(folio))
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x40c40(GFP_NOFS|__GFP_COMP), pid 5325, tgid 5324 (syz.0.0), ts 74961420116, free_ts 73104240054
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704
 prep_new_page mm/page_alloc.c:1712 [inline]
 get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
 alloc_frozen_pages_noprof mm/mempolicy.c:2490 [inline]
 alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2510
 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2520
 filemap_alloc_folio_noprof+0xdf/0x470 mm/filemap.c:1007
 __filemap_get_folio+0x3f2/0xaf0 mm/filemap.c:1980
 f2fs_new_node_folio+0x131/0xa40 fs/f2fs/node.c:1336
 f2fs_get_dnode_of_data+0x7d3/0x1b50 fs/f2fs/node.c:814
 f2fs_reserve_block+0x53/0x310 fs/f2fs/data.c:1195
 f2fs_get_new_data_folio+0x138/0x870 fs/f2fs/data.c:1363
 f2fs_add_regular_entry+0x5a3/0xc10 fs/f2fs/dir.c:702
 f2fs_add_dentry+0xda/0x1d0 fs/f2fs/dir.c:771
 f2fs_do_add_link+0x20f/0x3b0 fs/f2fs/dir.c:810
 f2fs_add_link fs/f2fs/f2fs.h:3717 [inline]
 f2fs_create+0x337/0x5c0 fs/f2fs/namei.c:380
page last free pid 5302 tgid 5302 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1248 [inline]
 __free_frozen_pages+0xc71/0xe70 mm/page_alloc.c:2706
 rcu_do_batch kernel/rcu/tree.c:2576 [inline]
 rcu_core+0xca5/0x1710 kernel/rcu/tree.c:2832
 handle_softirqs+0x286/0x870 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
------------[ cut here ]------------
kernel BUG at mm/filemap.c:1498!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 1050 Comm: kworker/u4:10 Not tainted 6.16.0-rc1-syzkaller-00004-gaef17cb3d3c4 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:folio_unlock+0x13d/0x160 mm/filemap.c:1498
Code: de c8 ff 48 89 df 48 c7 c6 e0 36 94 8b e8 7b 78 10 00 90 0f 0b e8 13 de c8 ff 48 89 df 48 c7 c6 00 2d 94 8b e8 64 78 10 00 90 <0f> 0b e8 fc dd c8 ff 48 89 df 48 c7 c6 e0 36 94 8b e8 4d 78 10 00
RSP: 0018:ffffc90002606e28 EFLAGS: 00010246
RAX: b84860dc8bb55400 RBX: ffffea00010ae640 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d9810f7 RDI: 00000000ffffffff
RBP: ffffc90002607110 R08: ffffffff8fa108f7 R09: 1ffffffff1f4211e
R10: dffffc0000000000 R11: fffffbfff1f4211f R12: 1ffffd4000215cc9
R13: 04fff3800000423c R14: ffffea00010ae648 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88808d252000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000051302000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 f2fs_sync_node_pages+0x180a/0x1a10 fs/f2fs/node.c:2081
 f2fs_write_node_pages+0x303/0x6e0 fs/f2fs/node.c:2183
 do_writepages+0x32b/0x550 mm/page-writeback.c:2636
 __writeback_single_inode+0x145/0xff0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x6b5/0x1000 fs/fs-writeback.c:1976
 wb_writeback+0x43b/0xaf0 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x409/0xef0 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_unlock+0x13d/0x160 mm/filemap.c:1498
Code: de c8 ff 48 89 df 48 c7 c6 e0 36 94 8b e8 7b 78 10 00 90 0f 0b e8 13 de c8 ff 48 89 df 48 c7 c6 00 2d 94 8b e8 64 78 10 00 90 <0f> 0b e8 fc dd c8 ff 48 89 df 48 c7 c6 e0 36 94 8b e8 4d 78 10 00
RSP: 0018:ffffc90002606e28 EFLAGS: 00010246
RAX: b84860dc8bb55400 RBX: ffffea00010ae640 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d9810f7 RDI: 00000000ffffffff
RBP: ffffc90002607110 R08: ffffffff8fa108f7 R09: 1ffffffff1f4211e
R10: dffffc0000000000 R11: fffffbfff1f4211f R12: 1ffffd4000215cc9
R13: 04fff3800000423c R14: ffffea00010ae648 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88808d252000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000051302000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400