================================================================== BUG: KCSAN: data-race in __should_fail_alloc_page / debugfs_write_file_bool write to 0xffffffff86183ea8 of 1 bytes by task 3088 on cpu 0: debugfs_write_file_bool+0xbd/0x160 fs/debugfs/file.c:911 vfs_write+0x28b/0x900 fs/read_write.c:588 ksys_write+0xeb/0x1b0 fs/read_write.c:643 __do_sys_write fs/read_write.c:655 [inline] __se_sys_write fs/read_write.c:652 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:652 x64_sys_call+0x27ef/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:2 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffffffff86183ea8 of 1 bytes by task 3089 on cpu 1: __should_fail_alloc_page+0x57/0x110 mm/fail_page_alloc.c:32 prepare_alloc_pages mm/page_alloc.c:4433 [inline] __alloc_pages_noprof+0x109/0x360 mm/page_alloc.c:4649 alloc_pages_mpol_noprof+0xb1/0x1e0 mm/mempolicy.c:2265 alloc_pages_noprof+0xe1/0x100 mm/mempolicy.c:2336 get_free_pages_noprof+0xc/0x30 mm/page_alloc.c:4707 _pgd_alloc arch/x86/mm/pgtable.c:423 [inline] pgd_alloc+0x22/0x170 arch/x86/mm/pgtable.c:439 mm_alloc_pgd kernel/fork.c:796 [inline] mm_init+0x372/0x6f0 kernel/fork.c:1295 mm_alloc+0x81/0xa0 kernel/fork.c:1335 bprm_mm_init fs/exec.c:385 [inline] alloc_bprm+0x1c8/0x5e0 fs/exec.c:1599 do_execveat_common+0x138/0x7d0 fs/exec.c:1949 do_execve fs/exec.c:2072 [inline] __do_sys_execve fs/exec.c:2148 [inline] __se_sys_execve fs/exec.c:2143 [inline] __x64_sys_execve+0x5a/0x70 fs/exec.c:2143 x64_sys_call+0x1378/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:60 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x01 -> 0x00 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 3089 Comm: syz-fuzzer Not tainted 6.10.0-rc1-syzkaller-00104-gd8ec19857b09 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 ==================================================================