[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <YxiVFJ9UdM5KeIXf@hirez.programming.kicks-ass.net>
Date: Wed, 7 Sep 2022 14:56:52 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
Cc: Steven Rostedt <rostedt@...dmis.org>,
Ingo Molnar <mingo@...nel.org>,
Suleiman Souhlal <suleiman@...gle.com>,
bpf <bpf@...r.kernel.org>, linux-kernel@...r.kernel.org,
Borislav Petkov <bp@...e.de>,
Josh Poimboeuf <jpoimboe@...nel.org>, x86@...nel.org
Subject: Re: [PATCH 1/2] x86/kprobes: Fix kprobes instruction boudary check
with CONFIG_RETHUNK
On Wed, Sep 07, 2022 at 09:55:21AM +0900, Masami Hiramatsu (Google) wrote:
> if (!kallsyms_lookup_size_offset(paddr, NULL, &offset))
> return 0;
>
One more thing:
https://lkml.kernel.org/r/20220902130951.853460809@infradead.org
can result in negative offsets. The expression:
'paddr - offset'
will still get you to +0, but I might not have fully considered things
when I wrote that patch.
Powered by blists - more mailing lists