syzbot

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WARNING: CPU: 0 PID: 12 at fs/netfs/write_issue.c:587 netfs_writepages+0x613/0x900 fs/netfs/write_issue.c:587
Modules linked in:
CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.16.0-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: writeback wb_workfn (flush-9p-7)
RIP: 0010:netfs_writepages+0x613/0x900 fs/netfs/write_issue.c:587
Code: df e8 b1 c0 b9 ff 49 c1 e6 0c 4c 8b 2b 4c 89 f7 4c 89 ee e8 bf db 59 ff 4d 39 ee 7c 07 e8 55 d9 59 ff eb 10 e8 4e d9 59 ff 90 <0f> 0b 90 eb 05 e8 43 d9 59 ff 4d 8d 74 24 28 4c 89 f0 48 c1 e8 03
RSP: 0018:ffffc900001170c0 EFLAGS: 00010293
RAX: ffffffff82664c72 RBX: ffff888058820280 RCX: ffff88801d2a5a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 810f000000000000
RBP: ffffc900001171c0 R08: ffff888058820287 R09: 1ffff1100b104050
R10: dffffc0000000000 R11: ffffed100b104051 R12: ffffea00004766c0
R13: 0000000000000000 R14: 810f000000000000 R15: ffff888057520498
FS:  0000000000000000(0000) GS:ffff888125c57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000059812000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 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
 __writeback_inodes_wb+0x111/0x240 fs/fs-writeback.c:2047
 wb_writeback+0x44f/0xaf0 fs/fs-writeback.c:2158
 wb_check_start_all fs/fs-writeback.c:2284 [inline]
 wb_do_writeback fs/fs-writeback.c:2310 [inline]
 wb_workfn+0x90b/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+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>