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[178.164.188.14]) by smtp.gmail.com with ESMTPSA id h14sm13181602wro.32.2021.07.05.00.48.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Jul 2021 00:48:11 -0700 (PDT) Sender: Ingo Molnar Date: Mon, 5 Jul 2021 09:48:09 +0200 From: Ingo Molnar To: Masami Hiramatsu Cc: Steven Rostedt , Josh Poimboeuf , X86 ML , Daniel Xu , linux-kernel@vger.kernel.org, bpf@vger.kernel.org, kuba@kernel.org, mingo@redhat.com, ast@kernel.org, Thomas Gleixner , Borislav Petkov , Peter Zijlstra , kernel-team@fb.com, yhs@fb.com, linux-ia64@vger.kernel.org, Abhishek Sagar , Andrii Nakryiko Subject: Re: [PATCH -tip v8 02/13] kprobes: treewide: Replace arch_deref_entry_point() with dereference_symbol_descriptor() Message-ID: References: <162399992186.506599.8457763707951687195.stgit@devnote2> <162399994018.506599.10332627573727646767.stgit@devnote2> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <162399994018.506599.10332627573727646767.stgit@devnote2> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Masami Hiramatsu wrote: > Replace arch_deref_entry_point() with dereference_symbol_descriptor() > because those are doing same thing. > > Signed-off-by: Masami Hiramatsu > Tested-by: Andrii Nakryik A better changelog: ~15 years ago kprobes grew the 'arch_deref_entry_point()' __weak function: 3d7e33825d87: ("jprobes: make jprobes a little safer for users") But this is just open-coded dereference_symbol_descriptor() in essence, and its obscure nature was causing bugs. Just use the real thing. Thanks, Ingo