unix_dgram_sendmsg+0x41a/0x1840 net/unix/af_unix.c:2071
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg net/socket.c:727 [inline]
 __sys_sendto+0x4a3/0x520 net/socket.c:2180
 __do_sys_sendto net/socket.c:2187 [inline]
 __se_sys_sendto net/socket.c:2183 [inline]
 __x64_sys_sendto+0xe0/0x1c0 net/socket.c:2183
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:1498!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 3506 Comm: kworker/u8:6 Not tainted 6.16.0-rc1-syzkaller-00003-gf09079bd04a9 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: writeback wb_workfn (flush-7:5)
RIP: 0010:folio_unlock mm/filemap.c:1498 [inline]
RIP: 0010:folio_unlock+0xb3/0xd0 mm/filemap.c:1493
Code: 13 a4 c9 ff 48 89 ef 31 f6 e8 f9 ed ff ff 5b 5d e9 02 a4 c9 ff e8 fd a3 c9 ff 48 c7 c6 20 0b b9 8b 48 89 ef e8 ee e4 11 00 90 <0f> 0b 48 89 df e8 23 6c 2f 00 e9 7b ff ff ff 66 66 2e 0f 1f 84 00
RSP: 0018:ffffc9000c247248 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888032165a00 RSI: ffffffff81f27812 RDI: ffff888032165e44
RBP: ffffea0001661c00 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90a82957 R11: 0000000000000001 R12: ffffc9000c247350
R13: 0000000000000002 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88812475b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f594e018f98 CR3: 000000006c3dc000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 f2fs_sync_node_pages+0x184c/0x1c30 fs/f2fs/node.c:2081
 f2fs_write_node_pages+0x27d/0x7a0 fs/f2fs/node.c:2183
 do_writepages+0x27a/0x600 mm/page-writeback.c:2636
 __writeback_single_inode+0x160/0xfb0 fs/fs-writeback.c:1680
 writeback_sb_inodes+0x601/0xf90 fs/fs-writeback.c:1976
 wb_writeback+0x419/0xb70 fs/fs-writeback.c:2156
 wb_do_writeback fs/fs-writeback.c:2303 [inline]
 wb_workfn+0x14d/0xbe0 fs/fs-writeback.c:2343
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3321 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d7/0x6f0 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 mm/filemap.c:1498 [inline]
RIP: 0010:folio_unlock+0xb3/0xd0 mm/filemap.c:1493
Code: 13 a4 c9 ff 48 89 ef 31 f6 e8 f9 ed ff ff 5b 5d e9 02 a4 c9 ff e8 fd a3 c9 ff 48 c7 c6 20 0b b9 8b 48 89 ef e8 ee e4 11 00 90 <0f> 0b 48 89 df e8 23 6c 2f 00 e9 7b ff ff ff 66 66 2e 0f 1f 84 00
RSP: 0018:ffffc9000c247248 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888032165a00 RSI: ffffffff81f27812 RDI: ffff888032165e44
RBP: ffffea0001661c00 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90a82957 R11: 0000000000000001 R12: ffffc9000c247350
R13: 0000000000000002 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88812475b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fadeff8 CR3: 000000005b6f8000 CR4: 0000000000350ef0