process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x711/0x8a0 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
------------[ cut here ]------------
kernel BUG at mm/filemap.c:1498!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.15.0-next-20250527-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: writeback wb_workfn (flush-7:3)
RIP: 0010:folio_unlock+0x13d/0x160 mm/filemap.c:1498
Code: e2 c8 ff 48 89 df 48 c7 c6 80 34 94 8b e8 9b 76 10 00 90 0f 0b e8 73 e2 c8 ff 48 89 df 48 c7 c6 a0 2a 94 8b e8 84 76 10 00 90 <0f> 0b e8 5c e2 c8 ff 48 89 df 48 c7 c6 80 34 94 8b e8 6d 76 10 00
RSP: 0018:ffffc90000116e28 EFLAGS: 00010246
RAX: 101f1915d09de400 RBX: ffffea00017d3f40 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d981a7b RDI: 00000000ffffffff
RBP: ffffc90000117110 R08: ffffffff8fa131f7 R09: 1ffffffff1f4263e
R10: dffffc0000000000 R11: fffffbfff1f4263f R12: 1ffffd40002fa7e9
R13: 00fff2800000403c R14: ffffea00017d3f48 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c55000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcf5717d2d8 CR3: 0000000069f18000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 f2fs_sync_node_pages+0x17fa/0x19f0 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+0xade/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x711/0x8a0 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: e2 c8 ff 48 89 df 48 c7 c6 80 34 94 8b e8 9b 76 10 00 90 0f 0b e8 73 e2 c8 ff 48 89 df 48 c7 c6 a0 2a 94 8b e8 84 76 10 00 90 <0f> 0b e8 5c e2 c8 ff 48 89 df 48 c7 c6 80 34 94 8b e8 6d 76 10 00
RSP: 0018:ffffc90000116e28 EFLAGS: 00010246
RAX: 101f1915d09de400 RBX: ffffea00017d3f40 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d981a7b RDI: 00000000ffffffff
RBP: ffffc90000117110 R08: ffffffff8fa131f7 R09: 1ffffffff1f4263e
R10: dffffc0000000000 R11: fffffbfff1f4263f R12: 1ffffd40002fa7e9
R13: 00fff2800000403c R14: ffffea00017d3f48 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c55000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f595d683f98 CR3: 0000000011b74000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400