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+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 NOPTI
CPU: 1 UID: 0 PID: 12538 Comm: kworker/u8:0 Not tainted 6.16.0-rc2-syzkaller-00278-g3f75bfff44be #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: writeback wb_workfn (flush-7:6)
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 5b 7e 10 00 90 0f 0b e8 13 de c8 ff 48 89 df 48 c7 c6 00 2d 94 8b e8 44 7e 10 00 90 <0f> 0b e8 fc dd c8 ff 48 89 df 48 c7 c6 e0 36 94 8b e8 2d 7e 10 00
RSP: 0018:ffffc9000442ee28 EFLAGS: 00010246
RAX: 709f419fb2abd600 RBX: ffffea0000f39400 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d9825dd RDI: 00000000ffffffff
RBP: ffffc9000442f110 R08: ffffffff8fa10cf7 R09: 1ffffffff1f4219e
R10: dffffc0000000000 R11: fffffbfff1f4219f R12: 1ffffd40001e7281
R13: 00fff2800000403c R14: ffffea0000f39408 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f01683777f1 CR3: 000000007948b000 CR4: 0000000000350ef0
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+0x32e/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+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: de c8 ff 48 89 df 48 c7 c6 e0 36 94 8b e8 5b 7e 10 00 90 0f 0b e8 13 de c8 ff 48 89 df 48 c7 c6 00 2d 94 8b e8 44 7e 10 00 90 <0f> 0b e8 fc dd c8 ff 48 89 df 48 c7 c6 e0 36 94 8b e8 2d 7e 10 00
RSP: 0018:ffffc9000442ee28 EFLAGS: 00010246
RAX: 709f419fb2abd600 RBX: ffffea0000f39400 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffffffff8d9825dd RDI: 00000000ffffffff
RBP: ffffc9000442f110 R08: ffffffff8fa10cf7 R09: 1ffffffff1f4219e
R10: dffffc0000000000 R11: fffffbfff1f4219f R12: 1ffffd40001e7281
R13: 00fff2800000403c R14: ffffea0000f39408 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125c51000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1facb82f98 CR3: 000000007948b000 CR4: 0000000000350ef0