kasan: fix crashes on access to memory mapped by vm_map_ram()

With CONFIG_KASAN_VMALLOC=y any use of memory obtained via vm_map_ram()
will crash because there is no shadow backing that memory.

Instead of sprinkling additional kasan_populate_vmalloc() calls all over
the vmalloc code, move it into alloc_vmap_area(). This will fix
vm_map_ram() and simplify the code a bit.

[[email protected]: v2]
  Link: http://lkml.kernel.org/r/[email protected]: http://lkml.kernel.org/r/[email protected]
Fixes: 3c5c3cfb9ef4 ("kasan: support backing vmalloc space with real shadow memory")
Signed-off-by: Andrey Ryabinin <[email protected]>
Reported-by: Dmitry Vyukov <[email protected]>
Reviewed-by: Uladzislau Rezki (Sony) <[email protected]>
Cc: Daniel Axtens <[email protected]>
Cc: Alexander Potapenko <[email protected]>
Cc: Daniel Axtens <[email protected]>
Cc: Qian Cai <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions