================================================================== BUG: KCSAN: data-race in io_submit_sqes / io_uring_poll read-write to 0xffff88814d5b2870 of 4 bytes by task 614 on cpu 0: io_get_sqe io_uring/io_uring.c:2276 [inline] io_submit_sqes+0x23f/0x1080 io_uring/io_uring.c:2327 __io_sq_thread io_uring/sqpoll.c:195 [inline] io_sq_thread+0x70f/0xff0 io_uring/sqpoll.c:317 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read to 0xffff88814d5b2870 of 4 bytes by task 630 on cpu 1: io_sqring_full io_uring/io_uring.h:285 [inline] io_uring_poll+0xcf/0x190 io_uring/io_uring.c:2739 vfs_poll include/linux/poll.h:84 [inline] __io_arm_poll_handler+0x229/0xf30 io_uring/poll.c:622 io_arm_poll_handler+0x411/0x5d0 io_uring/poll.c:756 io_wq_submit_work+0x4f6/0x5c0 io_uring/io_uring.c:1885 io_worker_handle_work+0x45a/0x9a0 io_uring/io-wq.c:597 io_wq_worker+0x286/0x820 io_uring/io-wq.c:651 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 value changed: 0x0000bfee -> 0x0000c000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 630 Comm: iou-wrk-614 Tainted: G W 6.10.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 ==================================================================