On 9 July 2014 23:44, Andi Kleen <andi@xxxxxxxxxxxxxx> wrote: > Dave Hansen <dave.hansen@xxxxxxxxx> writes: >> >> You're also claiming that "KASAN is better than all of > > better as in finding more bugs, but surely not better as in > "do so with less overhead" > >> CONFIG_DEBUG_PAGEALLOC". So should we just disallow (or hide) >> DEBUG_PAGEALLOC on kernels where KASAN is available? > > I don't think DEBUG_PAGEALLOC/SLUB debug and kasan really conflict. > > DEBUG_PAGEALLOC/SLUB is "much lower overhead but less bugs found". > KASAN is "slow but thorough" There are niches for both. > > But I could see KASAN eventually deprecating kmemcheck, which > is just incredible slow. FWIW, I definitely agree with this -- if KASAN can do everything that kmemcheck can, it is no doubt the right way forward. Vegard -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>