syzbot

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BUG: KCSAN: data-race in __writeback_single_inode / inode_io_list_del

read-write to 0xffff88810a959c60 of 8 bytes by task 1831 on cpu 1:
 inode_io_list_del+0x4e/0x1c0 fs/fs-writeback.c:1239
 evict+0xad/0x410 fs/inode.c:651
 iput_final fs/inode.c:1747 [inline]
 iput+0x3f9/0x580 fs/inode.c:1773
 d_delete_notify include/linux/fsnotify.h:261 [inline]
 vfs_rmdir+0x270/0x2f0 fs/namei.c:4133
 do_rmdir+0x178/0x300 fs/namei.c:4181
 __do_sys_unlinkat fs/namei.c:4361 [inline]
 __se_sys_unlinkat fs/namei.c:4355 [inline]
 __x64_sys_unlinkat+0xa0/0xb0 fs/namei.c:4355
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff88810a959c60 of 8 bytes by task 1843 on cpu 0:
 __writeback_single_inode+0x46/0x590 fs/fs-writeback.c:1583
 writeback_sb_inodes+0x6a0/0xdd0 fs/fs-writeback.c:1870
 __writeback_inodes_wb+0xb0/0x2a0 fs/fs-writeback.c:1941
 wb_writeback+0x280/0x650 fs/fs-writeback.c:2046
 wb_check_start_all fs/fs-writeback.c:2168 [inline]
 wb_do_writeback+0x418/0x600 fs/fs-writeback.c:2194
 wb_workfn+0x88/0x260 fs/fs-writeback.c:2227
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

value changed: 0x0000000000020081 -> 0x00000000000000a1

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 1843 Comm: kworker/u4:6 Not tainted 6.0.0-syzkaller-11658-ga185a0995518-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Workqueue: writeback wb_workfn (flush-8:0)
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