| commit | fb8ea062a8f2e85256e13f55696c5c5f0dfdcc8b | [log] [tgz] |
|---|---|---|
| author | James Hogan <james.hogan@imgtec.com> | Fri Mar 31 13:35:01 2017 +0100 |
| committer | James Hogan <james.hogan@imgtec.com> | Wed Apr 05 14:49:42 2017 +0100 |
| tree | 263488d227fe8bb0dea7749a07d45de104c62bd9 | |
| parent | 2257211942bbbf6c798ab70b487d7e62f7835a1a [diff] |
metag/usercopy: Add early abort to copy_to_user
When copying to userland on Meta, if any faults are encountered
immediately abort the copy instead of continuing on and repeatedly
faulting, and worse potentially copying further bytes successfully to
subsequent valid pages.
Fixes: 373cd784d0fc ("metag: Memory handling")
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
Cc: stable@vger.kernel.org