Re: [PATCH 1/2] prctl: Add PR_SET_MM option description

[Michael Kerrisk (man-pages)]

Cyrill,

While reviewing your patch to the prctl() manual page, I noticed the
following code inkernel/sys.c::prctl_set_mm():

        if (opt != PR_SET_MM_START_BRK && opt != PR_SET_MM_BRK) {
                /* It must be existing VMA */
                if (!vma || vma->vm_start > addr)
                        goto out;
        }

At this point, the code causes an exit with error set to zero (i.e.,
success). This looks unintended to me. Is the code correct? I suspect
a return of -EFAULT or -ENOMEM is warranted.

Cheers,

Michael
-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Author of "The Linux Programming Interface"; http://man7.org/tlpi/
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/