Masami Hiramatsu 579c977253 x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes ... commit 4e9a5ae8df upstream. Since insn.prefixes.nbytes can be bigger than the size of insn.prefixes.bytes[] when a prefix is repeated, the proper check must be insn.prefixes.bytes[i] != 0 and i < 4 instead of using insn.prefixes.nbytes. Introduce a for_each_insn_prefix() macro for this purpose. Debugged by Kees Cook <keescook@chromium.org>. [ bp: Massage commit message, sync with the respective header in tools/ and drop "we". ] Fixes: 2b14449835 ("uprobes, mm, x86: Add the ability to install and remove uprobes breakpoints") Reported-by: syzbot+9b64b619f10f19d19a7c@syzkaller.appspotmail.com Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/160697103739.3146288.7437620795200799020.stgit@devnote2 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-12-11 13:23:30 +01:00
..
include	x86/uprobes: Do not use prefixes.nbytes when looping over prefixes.bytes	2020-12-11 13:23:30 +01:00
lib	x86/decoder: Add TEST opcode to Group3-2	2020-02-24 08:36:55 +01:00
tools	x86/insn: Fix awk regexp warnings	2019-11-29 10:09:45 +01:00