================================================================== BUG: KCSAN: data-race in exit_mmap / io_ring_ctx_wait_and_kill read-write to 0xffff888105d67708 of 8 bytes by task 23191 on cpu 1: io_unaccount_mem fs/io_uring.c:7831 [inline] io_ring_ctx_wait_and_kill+0x2c3/0x370 fs/io_uring.c:8343 io_uring_release+0x3e/0x50 fs/io_uring.c:8361 __fput+0x243/0x4d0 fs/file_table.c:281 ____fput+0x11/0x20 fs/file_table.c:314 task_work_run+0x8e/0x110 kernel/task_work.c:151 exit_task_work include/linux/task_work.h:30 [inline] do_exit+0x437/0x15a0 kernel/exit.c:806 do_group_exit+0xc8/0x170 kernel/exit.c:903 get_signal+0xf9b/0x1510 kernel/signal.c:2758 arch_do_signal+0x25/0x260 arch/x86/kernel/signal.c:811 exit_to_user_mode_loop kernel/entry/common.c:161 [inline] exit_to_user_mode_prepare+0xde/0x170 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:266 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888105d67708 of 8 bytes by task 23186 on cpu 0: exit_mmap+0x94/0x3b0 mm/mmap.c:3202 __mmput+0xa2/0x220 kernel/fork.c:1079 mmput+0x38/0x40 kernel/fork.c:1100 exit_mm+0x2bd/0x320 kernel/exit.c:483 do_exit+0x3c2/0x15a0 kernel/exit.c:793 do_group_exit+0x16f/0x170 kernel/exit.c:903 __do_sys_exit_group+0xb/0x10 kernel/exit.c:914 __se_sys_exit_group+0x5/0x10 kernel/exit.c:912 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:912 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 23186 Comm: syz-executor.2 Not tainted 5.10.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================