x86: Disable HAVE_ARCH_HUGE_VMALLOC on 32-bit x86

kernel test robot reported kernel BUG like:

[ 44.587744][ T1] kernel BUG at arch/x86/mm/physaddr.c:76!
[ 44.590151][ T1] __vmalloc_area_node (mm/vmalloc.c:622 mm/vmalloc.c:2995)
[ 44.590151][ T1] __vmalloc_node_range (mm/vmalloc.c:3108)
[ 44.590151][ T1] __vmalloc_node (mm/vmalloc.c:3157)

which is triggered with HAVE_ARCH_HUGE_VMALLOC on 32-bit x86. Since BPF
only uses HAVE_ARCH_HUGE_VMALLOC for x86_64, turn it off for 32-bit x86.

Fixes: fac54e2bfb5b ("x86/Kconfig: Select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP")
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20220302175126.247459-2-song@kernel.org

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 995f2dc..9b356da 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -158,7 +158,7 @@ config X86
        select HAVE_ALIGNED_STRUCT_PAGE         if SLUB
        select HAVE_ARCH_AUDITSYSCALL
        select HAVE_ARCH_HUGE_VMAP              if X86_64 || X86_PAE
-       select HAVE_ARCH_HUGE_VMALLOC           if HAVE_ARCH_HUGE_VMAP
+       select HAVE_ARCH_HUGE_VMALLOC           if X86_64
        select HAVE_ARCH_JUMP_LABEL
        select HAVE_ARCH_JUMP_LABEL_RELATIVE
        select HAVE_ARCH_KASAN                  if X86_64