__slab_free+0x2d6/0x3a0 mm/slub.c:4557
 do_slab_free mm/slub.c:4598 [inline]
 slab_free mm/slub.c:4647 [inline]
 kmem_cache_free+0x1de/0x370 mm/slub.c:4748
 rcu_do_batch kernel/rcu/tree.c:2568 [inline]
 rcu_core+0x3e4/0x810 kernel/rcu/tree.c:2824
 handle_softirqs+0x11b/0x3a0 kernel/softirq.c:579
 run_ksoftirqd+0x28/0x40 kernel/softirq.c:968
 smpboot_thread_fn+0x189/0x2b0 kernel/smpboot.c:164
 kthread+0x23c/0x270 kernel/kthread.c:464
 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:153
 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 PTI
CPU: 1 UID: 0 PID: 383 Comm: kworker/u8:4 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(undef) 
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+0x3d/0x40 mm/filemap.c:1498
Code: 37 01 79 04 31 f6 eb 35 c3 cc cc cc cc cc 48 c7 c6 d5 98 1f 83 e8 c3 e6 04 00 90 0f 0b 48 c7 c6 44 86 19 83 e8 b4 e6 04 00 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41
RSP: 0018:ffffc900014ef7f0 EFLAGS: 00010246
RAX: 522303fa5cac6000 RBX: ffff88810ef42000 RCX: 522303fa5cac6000
RDX: 0000000000000002 RSI: ffffffff832ec8b4 RDI: ffff8881007f1b80
RBP: 0000000000000002 R08: 0000000000001fff R09: ffffffff836fd0f0
R10: 0000000000005ffd R11: 00000000ffffdfff R12: 0000000000000000
R13: ffffea00043fcc80 R14: fffa80010ff32000 R15: ffffc900014efb20
FS:  0000000000000000(0000) GS:ffff8882b378f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558e0f9b26a0 CR3: 00000000036ac000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 f2fs_sync_node_pages+0x565/0x630 fs/f2fs/node.c:2081
 f2fs_write_node_pages+0x110/0x1c0 fs/f2fs/node.c:2183
 do_writepages+0xf3/0x340 mm/page-writeback.c:2656
 __writeback_single_inode+0x6b/0x540 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x29b/0x550 fs/fs-writeback.c:1976
 wb_writeback+0x195/0x450 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x1ad/0x560 fs/fs-writeback.c:2343
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0x311/0x6b0 kernel/workqueue.c:3319
 worker_thread+0x1df/0x2f0 kernel/workqueue.c:3400
 kthread+0x23c/0x270 kernel/kthread.c:464
 ret_from_fork+0x32/0x40 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_unlock+0x3d/0x40 mm/filemap.c:1498
Code: 37 01 79 04 31 f6 eb 35 c3 cc cc cc cc cc 48 c7 c6 d5 98 1f 83 e8 c3 e6 04 00 90 0f 0b 48 c7 c6 44 86 19 83 e8 b4 e6 04 00 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41
RSP: 0018:ffffc900014ef7f0 EFLAGS: 00010246
RAX: 522303fa5cac6000 RBX: ffff88810ef42000 RCX: 522303fa5cac6000
RDX: 0000000000000002 RSI: ffffffff832ec8b4 RDI: ffff8881007f1b80
RBP: 0000000000000002 R08: 0000000000001fff R09: ffffffff836fd0f0
R10: 0000000000005ffd R11: 00000000ffffdfff R12: 0000000000000000
R13: ffffea00043fcc80 R14: fffa80010ff32000 R15: ffffc900014efb20
FS:  0000000000000000(0000) GS:ffff8882b378f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558e0f9b26a0 CR3: 00000000036ac000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400