================================================================== BUG: KCSAN: data-race in io_submit_sqes / io_uring_poll read-write to 0xffff88812143b870 of 4 bytes by task 12528 on cpu 0: io_get_sqe fs/io_uring.c:9040 [inline] io_submit_sqes+0x1f2/0x500 fs/io_uring.c:9086 __do_sys_io_uring_enter fs/io_uring.c:12043 [inline] __se_sys_io_uring_enter+0x24b/0xd60 fs/io_uring.c:11969 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:11969 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 0xffff88812143b870 of 4 bytes by task 12520 on cpu 1: io_sqring_full fs/io_uring.c:2184 [inline] io_uring_poll+0x8d/0x150 fs/io_uring.c:11208 vfs_poll include/linux/poll.h:88 [inline] do_pollfd fs/select.c:873 [inline] do_poll fs/select.c:921 [inline] do_sys_poll+0x6d5/0xca0 fs/select.c:1015 __do_sys_ppoll fs/select.c:1121 [inline] __se_sys_ppoll+0x195/0x1d0 fs/select.c:1101 __x64_sys_ppoll+0x63/0x70 fs/select.c:1101 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 value changed: 0x000000c7 -> 0x000000cb Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 12520 Comm: syz-executor.2 Not tainted 5.19.0-rc7-syzkaller-00002-g80e19f34c288-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 ==================================================================