On Tue, Jan 16, 2018 at 07:41:24PM -0500, Jeff Moyer wrote:
> if (sigmask) {
> - if (copy_from_user(&ksigmask, sigmask, sizeof(ksigmask)))
> + if (!access_ok(VERIFY_READ, sigmask,
> + sizeof(void *) + sizeof(size_t)) ||
> + __get_user(up, (sigset_t __user * __user *)sigmask) ||
> + __get_user(sigsetsize,
> + (size_t __user *)(sigmask + sizeof(void *))))
> return -EFAULT;
How about copy_from_user() on a struct? Making eyes bleed is fun, but
people tend to get annoyed when you do it to them...
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