| commit | 4df548a80080afbebf8c9ad49ea4914ec747f68e | |
| author | Dan Carpenter <dan.carpenter@oracle.com> | |
| Wed, 13 Jun 2018 14:27:38 +0000 (13 17:27 +0300) | ||
| committer | Dan Carpenter <dan.carpenter@oracle.com> | |
| Wed, 13 Jun 2018 14:27:38 +0000 (13 17:27 +0300) | ||
| tree | 690a53b76ab17292f8874e765bf31b63a6e83931 | treesnapshot (tar.gz zip) |
| parent | 9cc13fe5cc6dbb2cd269f50dbbe5a6d3753fc8f3 | commitdiff |
check_spectre: ignore masked off data
Apparently, if you mask off the offset:
foo = array[offset & 0xff];
And the array has 256 elements, then the CPU won't speculatively access
beyond the end of the array.
Reported-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Apparently, if you mask off the offset:
foo = array[offset & 0xff];
And the array has 256 elements, then the CPU won't speculatively access
beyond the end of the array.
Reported-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
| check_spectre.c | diffblobblamehistory |