==================================================================
BUG: KCSAN: data-race in __writeback_single_inode / inode_io_list_del

write to 0xffff888106e12cf8 of 8 bytes by task 1787 on cpu 0:
 inode_io_list_del+0xc9/0x2a0 fs/fs-writeback.c:1270
 evict+0xac/0x3c0 fs/inode.c:571
 iput_final fs/inode.c:1660 [inline]
 iput+0x430/0x580 fs/inode.c:1686
 do_unlinkat+0x293/0x4f0 fs/namei.c:4109
 __do_sys_unlink fs/namei.c:4149 [inline]
 __se_sys_unlink fs/namei.c:4147 [inline]
 __x64_sys_unlink+0x2c/0x30 fs/namei.c:4147
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888106e12cf8 of 8 bytes by task 198 on cpu 1:
 __writeback_single_inode+0x104/0x440 fs/fs-writeback.c:1633
 writeback_sb_inodes+0x563/0xd10 fs/fs-writeback.c:1878
 wb_writeback+0x28e/0x700 fs/fs-writeback.c:2051
 wb_do_writeback+0x101/0x510 fs/fs-writeback.c:2196
 wb_workfn+0xc8/0x520 fs/fs-writeback.c:2237
 process_one_work+0x3e9/0x8f0 kernel/workqueue.c:2276
 worker_thread+0x636/0xae0 kernel/workqueue.c:2422
 kthread+0x262/0x280 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

value changed: 0x0000000000020081 -> 0x00000000000000a1

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 198 Comm: kworker/u4:3 Not tainted 5.14.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: writeback wb_workfn (flush-8:0)
==================================================================