| commit | 7ec81e56edc2b2007ce0ae3982aa5c18af9546ab | |
| author | David Gibson <david@gibson.dropbear.id.au> | |
| Tue, 4 Dec 2012 00:38:38 +0000 (4 11:38 +1100) | ||
| committer | Anthony Liguori <aliguori@us.ibm.com> | |
| Wed, 12 Dec 2012 21:03:31 +0000 (12 15:03 -0600) | ||
| tree | cf7086a39e1e4632ac34cbf6d6724f90f8c8adc9 | treesnapshot (tar.gz zip) |
| parent | 1c97e303d4ea80a2691334b0febe87a50660f99d | commitdiff |
Fix off-by-1 error in RAM migration code
The code for migrating (or savevm-ing) memory pages starts off by creating
a dirty bitmap and filling it with 1s. Except, actually, because bit
addresses are 0-based it fills every bit except bit 0 with 1s and puts an
extra 1 beyond the end of the bitmap, potentially corrupting unrelated
memory. Oops. This patch fixes it.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
The code for migrating (or savevm-ing) memory pages starts off by creating
a dirty bitmap and filling it with 1s. Except, actually, because bit
addresses are 0-based it fills every bit except bit 0 with 1s and puts an
extra 1 beyond the end of the bitmap, potentially corrupting unrelated
memory. Oops. This patch fixes it.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
| arch_init.c | diffblobblamehistory |