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BUG: KCSAN: data-race in init_file / prepare_creds

write to 0xffff888100bb30a8 of 4 bytes by task 11531 on cpu 0:
 get_cred_many include/linux/cred.h:219 [inline]
 get_cred include/linux/cred.h:235 [inline]
 init_file+0x2e/0x1c0 fs/file_table.c:158
 alloc_empty_file+0x8b/0x200 fs/file_table.c:241
 path_openat+0x63/0x23b0 fs/namei.c:4782
 do_filp_open+0x109/0x230 fs/namei.c:4823
 do_open_execat+0xd8/0x260 fs/exec.c:783
 alloc_bprm+0x25/0x350 fs/exec.c:1409
 do_execveat_common+0x12e/0x750 fs/exec.c:1810
 do_execveat fs/exec.c:1944 [inline]
 __do_sys_execveat fs/exec.c:2018 [inline]
 __se_sys_execveat fs/exec.c:2012 [inline]
 __x64_sys_execveat+0x73/0x90 fs/exec.c:2012
 x64_sys_call+0x1c0e/0x3000 arch/x86/include/generated/asm/syscalls_64.h:323
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xca/0x2b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888100bb3000 of 184 bytes by task 11532 on cpu 1:
 prepare_creds+0x6e/0x550 kernel/cred.c:192
 prepare_exec_creds+0x14/0xe0 kernel/cred.c:234
 prepare_bprm_creds fs/exec.c:1363 [inline]
 bprm_execve+0x70/0x9b0 fs/exec.c:1733
 do_execveat_common+0x6e6/0x750 fs/exec.c:1859
 do_execveat fs/exec.c:1944 [inline]
 __do_sys_execveat fs/exec.c:2018 [inline]
 __se_sys_execveat fs/exec.c:2012 [inline]
 __x64_sys_execveat+0x73/0x90 fs/exec.c:2012
 x64_sys_call+0x1c0e/0x3000 arch/x86/include/generated/asm/syscalls_64.h:323
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xca/0x2b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 11532 Comm: syz.0.2785 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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