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Date: Tue, 1 Mar 2022 16:43:38 -0800
From: Song Liu <song@...nel.org>
To: <bpf@...r.kernel.org>, <netdev@...r.kernel.org>
CC: <ast@...nel.org>, <daniel@...earbox.net>, <andrii@...nel.org>,
<kernel-team@...com>, Song Liu <song@...nel.org>,
kernel test robot <oliver.sang@...el.com>
Subject: [PATCH bpf-next 1/2] 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.
Reported-by: kernel test robot <oliver.sang@...el.com>
Fixes: fac54e2bfb5b ("x86/Kconfig: Select HAVE_ARCH_HUGE_VMALLOC with HAVE_ARCH_HUGE_VMAP")
Signed-off-by: Song Liu <song@...nel.org>
---
arch/x86/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 995f2dc28631..9b356da6f46b 100644
--- 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
--
2.30.2
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