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Fix a kprobes bug, plus add a new Intel model number to the

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upstream <asm/intel-family.h> header for drivers to use.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2023-02-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Fix a kprobes bug, plus add a new Intel model number to the upstream
  <asm/intel-family.h> header for drivers to use"

* tag 'x86-urgent-2023-02-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Add Lunar Lake M
  x86/kprobes: Fix 1 byte conditional jump target
This commit is contained in:
Linus Torvalds 2023-02-11 11:17:21 -08:00
commit 47e9aa14ce
2 changed files with 3 additions and 1 deletions
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2
arch/x86/include/asm/intel-family.h
View file

@ -123,6 +123,8 @@
#define INTEL_FAM6_METEORLAKE 0xAC
#define INTEL_FAM6_METEORLAKE_L 0xAA
#define INTEL_FAM6_LUNARLAKE_M 0xBD
/* "Small Core" Processors (Atom/E-Core) */
#define INTEL_FAM6_ATOM_BONNELL 0x1C /* Diamondville, Pineview */

2
arch/x86/kernel/kprobes/core.c
View file

@ -625,7 +625,7 @@ static int prepare_emulation(struct kprobe *p, struct insn *insn)
/* 1 byte conditional jump */
p->ainsn.emulate_op = kprobe_emulate_jcc;
p->ainsn.jcc.type = opcode & 0xf;
p->ainsn.rel32 = *(char *)insn->immediate.bytes;
p->ainsn.rel32 = insn->immediate.value;
break;
case 0x0f:
opcode = insn->opcode.bytes[1];