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| author |   Ingo Molnar <mingo@kernel.org> | 2019-11-25 09:09:27 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-11-25 09:09:27 +0100 |
| commit | ceb9e77324fa661b1001a0ae66f061b5fcb4e4e6 (patch) | |
| tree | dce8c1a21347cd12b44ed56af4aafc2a58c9ec08 /arch/x86/kernel | |
| parent | Merge branch 'perf/urgent' into perf/core, to pick up fixes (diff) | |
| parent | x86: kprobes: Prohibit probing on instruction which has emulate prefix (diff) | |
| download | linux-dev-ceb9e77324fa661b1001a0ae66f061b5fcb4e4e6.tar.xz linux-dev-ceb9e77324fa661b1001a0ae66f061b5fcb4e4e6.zip | |
Merge branch 'x86/core' into perf/core, to resolve conflicts and to pick up completed topic tree
Conflicts:
tools/perf/check-headers.sh
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/kprobes/core.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index 43fc13c831af..4f13af7cbcdb 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -351,6 +351,10 @@ int __copy_instruction(u8 *dest, u8 *src, u8 *real, struct insn *insn) kernel_insn_init(insn, dest, MAX_INSN_SIZE); insn_get_length(insn); + /* We can not probe force emulate prefixed instruction */ + if (insn_has_emulate_prefix(insn)) + return 0; + /* Another subsystem puts a breakpoint, failed to recover */ if (insn->opcode.bytes[0] == BREAKPOINT_INSTRUCTION) return 0; |