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[ Upstream commitd60ad3d46f] Since the opcodes start from 0xff are group5 instruction group which is not 2 bytes opcode but the extended opcode determined by the MOD/RM byte. The commitabd82e533d("x86/kprobes: Do not decode opcode in resume_execution()") used insn->opcode.bytes[1], but that is not correct. We have to refer the insn->modrm.bytes[1] instead. Fixes:abd82e533d("x86/kprobes: Do not decode opcode in resume_execution()") Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/161469872400.49483.18214724458034233166.stgit@devnote2 Signed-off-by: Li Huafei <lihuafei1@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.