On Wed, Sep 12, 2018 at 8:39 PM, Dmitry Vyukov <dvyukov@xxxxxxxxxx> wrote: > On Wed, Aug 29, 2018 at 1:35 PM, Andrey Konovalov <andreyknvl@xxxxxxxxxx> wrote: >> This patch updates KASAN documentation to reflect the addition of KHWASAN. >> -Currently KASAN is supported only for the x86_64 and arm64 architectures. >> +KASAN uses compile-time instrumentation to insert validity checks before every >> +memory access, and therefore requires a compiler version that supports that. >> +For classic KASAN you need GCC version 4.9.2 or later. GCC 5.0 or later is >> +required for detection of out-of-bounds accesses on stack and global variables. >> +KHWASAN in turns is only supported in clang and requires revision 330044 or > > in turn? > >> -and choose between CONFIG_KASAN_OUTLINE and CONFIG_KASAN_INLINE. Outline and >> -inline are compiler instrumentation types. The former produces smaller binary >> -the latter is 1.1 - 2 times faster. Inline instrumentation requires a GCC >> +and choose between CONFIG_KASAN_GENERIC (to enable classic KASAN) and >> +CONFIG_KASAN_HW (to enabled KHWASAN). You also need to choose choose between > > to enable > >> + print_address_description+0x73/0x280 mm/kasan/report.c:254 > > > KASAN does not print line numbers per se. > I think we need to show unmodified output to not confuse readers > (probably remove the useless ? lines). Will fix all in v7.
