On Tue, Nov 10, 2020 at 11:20PM +0100, Andrey Konovalov wrote: > Even though hardware tag-based mode currently doesn't support checking > vmalloc allocations, it doesn't use shadow memory and works with > VMAP_STACK as is. Change VMAP_STACK definition accordingly. > > Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx> > Link: https://linux-review.googlesource.com/id/I3552cbc12321dec82cd7372676e9372a2eb452ac > --- Shouldn't this be in the other series? FWIW, Reviewed-by: Marco Elver <elver@xxxxxxxxxx> > arch/Kconfig | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/arch/Kconfig b/arch/Kconfig > index 56b6ccc0e32d..7e7d14fae568 100644 > --- a/arch/Kconfig > +++ b/arch/Kconfig > @@ -914,16 +914,16 @@ config VMAP_STACK > default y > bool "Use a virtually-mapped stack" > depends on HAVE_ARCH_VMAP_STACK > - depends on !KASAN || KASAN_VMALLOC > + depends on !KASAN || KASAN_HW_TAGS || KASAN_VMALLOC > help > Enable this if you want the use virtually-mapped kernel stacks > with guard pages. This causes kernel stack overflows to be > caught immediately rather than causing difficult-to-diagnose > corruption. > > - To use this with KASAN, the architecture must support backing > - virtual mappings with real shadow memory, and KASAN_VMALLOC must > - be enabled. > + To use this with software KASAN modes, the architecture must support > + backing virtual mappings with real shadow memory, and KASAN_VMALLOC > + must be enabled. > > config ARCH_OPTIONAL_KERNEL_RWX > def_bool n > -- > 2.29.2.222.g5d2a92d10f8-goog >
