On Sat, Aug 04, 2012 at 12:21:43PM +0900, Tetsuo Handa wrote:
> Hello.
>
> Bisection with an error injection
>
> --- a/security/security.c
> +++ b/security/security.c
> @@ -747,6 +747,10 @@ int security_file_open(struct file *file, const struct cred *cred)
> {
> int ret;
>
> + if (ACC_MODE(file->f_flags) == FMODE_WRITE &&
> + current->pid == 1)
> + return -EPERM;
> +
> ret = security_ops->file_open(file, cred);
> if (ret)
> return ret;
>
> reported that commit eb04c282
> "fs: Add freezing handling to mnt_want_write() / mnt_drop_write()"
> is causing this warning.
>
> Would you check?
That's missed mnt_drop_write() in cleanup_all: side of do_dentry_open(). I've thrown a fix
in #for-linus; check if it works for you...
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