================================================================== BUG: KCSAN: data-race in io_submit_sqes / io_uring_poll write to 0xffff888144ad3050 of 4 bytes by task 5901 on cpu 0: io_get_sqe fs/io_uring.c:6698 [inline] io_submit_sqes+0x544/0xbd0 fs/io_uring.c:6732 __do_sys_io_uring_enter fs/io_uring.c:9336 [inline] __se_sys_io_uring_enter+0x1e1/0xa80 fs/io_uring.c:9278 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:9278 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888144ad3050 of 4 bytes by task 5911 on cpu 1: io_sqring_full fs/io_uring.c:1363 [inline] io_uring_poll+0x94/0x160 fs/io_uring.c:8652 vfs_poll include/linux/poll.h:90 [inline] do_pollfd fs/select.c:869 [inline] do_poll fs/select.c:917 [inline] do_sys_poll+0x622/0xc40 fs/select.c:1011 __do_sys_ppoll fs/select.c:1117 [inline] __se_sys_ppoll+0x169/0x1b0 fs/select.c:1097 __x64_sys_ppoll+0x63/0x70 fs/select.c:1097 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00001f8a -> 0x00001f91 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 5911 Comm: syz-executor.4 Not tainted 5.13.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================