================================================================== BUG: KCSAN: data-race in io_ring_exit_work / io_sq_thread write to 0xffff888132d5c7b8 of 8 bytes by task 13005 on cpu 0: io_sq_thread+0xaab/0xba0 fs/io_uring.c:6934 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 read to 0xffff888132d5c7b8 of 8 bytes by task 4514 on cpu 1: io_sq_thread_park fs/io_uring.c:7327 [inline] io_ring_exit_work+0xa5/0x1350 fs/io_uring.c:8794 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: 0xffff888131374040 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 4514 Comm: kworker/u4:9 Not tainted 5.14.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound io_ring_exit_work ==================================================================