From f0df00ebc57f803603f2a2e0df197e51f06fbe90 Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Wed, 9 Apr 2025 06:58:37 -0700 Subject: [PATCH] x86/cpu: Avoid running off the end of an AMD erratum table The NULL array terminator at the end of erratum_1386_microcode was removed during the switch from x86_cpu_desc to x86_cpu_id. This causes readers to run off the end of the array. Replace the NULL. Fixes: f3f325152673 ("x86/cpu: Move AMD erratum 1386 table over to 'x86_cpu_id'") Reported-by: Jiri Slaby Signed-off-by: Dave Hansen --- arch/x86/kernel/cpu/amd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 79569f72b8ee..a839ff506f45 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -805,6 +805,7 @@ static void init_amd_bd(struct cpuinfo_x86 *c) static const struct x86_cpu_id erratum_1386_microcode[] = { X86_MATCH_VFM_STEPS(VFM_MAKE(X86_VENDOR_AMD, 0x17, 0x01), 0x2, 0x2, 0x0800126e), X86_MATCH_VFM_STEPS(VFM_MAKE(X86_VENDOR_AMD, 0x17, 0x31), 0x0, 0x0, 0x08301052), + {} }; static void fix_erratum_1386(struct cpuinfo_x86 *c) -- 2.25.1