diff options
Diffstat (limited to 'drivers/misc/lkdtm/heap.c')
| -rw-r--r-- | drivers/misc/lkdtm/heap.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/misc/lkdtm/heap.c b/drivers/misc/lkdtm/heap.c index 8a92f5a800fa..b4ac726a548f 100644 --- a/drivers/misc/lkdtm/heap.c +++ b/drivers/misc/lkdtm/heap.c @@ -22,6 +22,9 @@ static volatile int __offset = 1; /* * If there aren't guard pages, it's likely that a consecutive allocation will * let us overflow into the second allocation without overwriting something real. + * + * This should always be caught because there is an unconditional unmapped + * page after vmap allocations. */ void lkdtm_VMALLOC_LINEAR_OVERFLOW(void) { @@ -41,6 +44,9 @@ void lkdtm_VMALLOC_LINEAR_OVERFLOW(void) * This tries to stay within the next largest power-of-2 kmalloc cache * to avoid actually overwriting anything important if it's not detected * correctly. + * + * This should get caught by either memory tagging, KASan, or by using + * CONFIG_SLUB_DEBUG=y and slub_debug=ZF (or CONFIG_SLUB_DEBUG_ON=y). */ void lkdtm_SLAB_LINEAR_OVERFLOW(void) { |