From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DA5AAC433F5 for ; Mon, 21 Mar 2022 07:01:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244943AbiCUHCr (ORCPT ); Mon, 21 Mar 2022 03:02:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43342 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241003AbiCUHCq (ORCPT ); Mon, 21 Mar 2022 03:02:46 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 172FCBEF; Mon, 21 Mar 2022 00:01:20 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 9A4AC60F82; Mon, 21 Mar 2022 07:01:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5F8CAC340E8; Mon, 21 Mar 2022 07:01:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1647846079; bh=1LD0xuwdOgPcNOgMJ6zSDIel0EcKiTIJVshsWznG2Vo=; h=From:To:Cc:Subject:Date:From; b=MYqrlJWlPTbX+CGGOlGTeJe47Qu7Cvt+Kyn00BhVb4ZRxCT2YGTq82JsWaN5cw7Z6 ogKy3atkbFXVs/E0rNVAx8UFYAlxa0aAIfTajVuZaHcfQWUhkklpCoIbi4Q+aKjPao /OW2QdC0Iw/5KjShuSF2WF8P9HY9+Dk4qZDmuoiUTj5b6cZKpMHC7s5EpkxVZjJBLk 3VPm3VoFSw2GGTqSgkWVugpXqFJIaJJ7c/wcXARn0TiMKMvKKhrP/fifTgk5DOpvxv iZ760rtV8rW4DHLI7HXCHbN7AYf2sSOafDle7U8ZK6fRDHYslmxphWbE14o4ar3a+5 oc4OwXj535j4w== From: Jiri Olsa To: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Masami Hiramatsu Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, lkml , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Steven Rostedt Subject: [PATCH bpf-next 0/2] bpf: Fix kprobe_multi return probe backtrace Date: Mon, 21 Mar 2022 08:01:11 +0100 Message-Id: <20220321070113.1449167-1-jolsa@kernel.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org hi, Andrii reported that backtraces from kprobe_multi program attached as return probes are not complete and showing just initial entry [1]. Sending the fix together with bpf_get_func_ip inline revert, which is no longer suitable. thanks, jirka --- [1] https://lore.kernel.org/bpf/CAEf4BzZDDqK24rSKwXNp7XL3ErGD4bZa1M6c_c4EvDSt3jrZcg@mail.gmail.com/T/#m8d1301c0ea0892ddf9dc6fba57a57b8cf11b8c51 Jiri Olsa (2): Revert "bpf: Add support to inline bpf_get_func_ip helper on x86" bpf: Fix kprobe_multi return probe backtrace kernel/bpf/verifier.c | 21 +-------------------- kernel/trace/bpf_trace.c | 68 +++++++++++++++++++++++++++++++++++++------------------------------- 2 files changed, 38 insertions(+), 51 deletions(-)