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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 80D1BC77B75 for ; Wed, 17 May 2023 02:54:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Mime-Version:References:In-Reply-To: Message-Id:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=2KKRPRmVVJfZbOybitD4cAr96OmN0QhuNmOfVKQfP3I=; b=wMvKgL30pXQQOZ lFLVdkXMy4ZlKpBlemkN92kqBANm3l++LlpEQkGKtFio5ikoPEw6GbFr/soBmKTQhZ5sx3PMUMhFZ zrBWpg6s9Qtjb2yj19F8Q08+2f+xOqMgyvEVVOGj2okr5aX24HKhja5D54pH/3rTJ9TRqNQEVGtB+ 9BdDXWGpbkKTL2uVxpSUyXCaUe4tKB4PG+aMY+U2ydDRV39tUQhGqg8Vj1ybhO/F1ipGFg3fL7QuD PckbIu+V1vA9coZEVw1q762ayMgJvhntBteWo4pLg6IUdnPJX3jHLZkR/oGQKQI49+6JitSr25Tp3 /icSs5p432bT26SOIjQw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pz7JL-007u6H-0V; Wed, 17 May 2023 02:54:43 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pz7JH-007u5E-3B for linux-riscv@lists.infradead.org; Wed, 17 May 2023 02:54:41 +0000 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 5BB4960B7F; Wed, 17 May 2023 02:54:39 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 81329C433EF; Wed, 17 May 2023 02:54:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1684292078; bh=sFe/hVwr1RlqKJNFm/E/CQUy8RQP2QPCq5ps+biUM9c=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=g+5EQcDL1aJVnKUa9P7oA57b/J0fhJzeYfjHTKmU/TRp0LWprYJG7s3i3FWeWbRbR X9bJ2KLuZB6L62KxGGDwk739uH0Oh9865Gapt7hV+NuajubaQCh6YPj9tbebJHDEDM m4WRnqNvcl5a8uF/AJsgrjlgrsp316p+SBDagEbisG/VbjrjDb5BpoisrcGEw9u51G c0DhunDC++nODeOS0aUyO8UbMBnjA5G21/4mLTf1ex2oAI9Chbs6Sa/GrxQfBk2sDt jDGp9OjmVhTV+sjsYTUpARxL546bJitU/aBLs7h9L9thv4XQsaKVUXYpHn+8/AZZoU ZMmYifuUoeDag== Date: Wed, 17 May 2023 11:54:32 +0900 From: Masami Hiramatsu (Google) To: Ze Gao Cc: Peter Zijlstra , Steven Rostedt , Albert Ou , Alexander Gordeev , Alexei Starovoitov , Borislav Petkov , Christian Borntraeger , Dave Hansen , Heiko Carstens , "H. Peter Anvin" , Ingo Molnar , Palmer Dabbelt , Paul Walmsley , Sven Schnelle , Thomas Gleixner , Vasily Gorbik , x86@kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org, Conor Dooley , Jiri Olsa , Yonghong Song , Ze Gao Subject: Re: [PATCH v2 2/4] fprobe: make fprobe_kprobe_handler recursion free Message-Id: <20230517115432.94a65364e53cbd5b40c54e82@kernel.org> In-Reply-To: References: <20230516071830.8190-1-zegao@tencent.com> <20230516071830.8190-3-zegao@tencent.com> <20230516091820.GB2587705@hirez.programming.kicks-ass.net> <20230517010311.f46db3f78b11cf9d92193527@kernel.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230516_195440_130811_87182201 X-CRM114-Status: GOOD ( 24.29 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org T24gV2VkLCAxNyBNYXkgMjAyMyAwOTo1NDo1MyArMDgwMApaZSBHYW8gPHplZ2FvMjAyMUBnbWFp bC5jb20+IHdyb3RlOgoKPiBPb3BzLCBJIG1pc3VuZGVyc3Rvb2QgeW91ciBjb21tZW50cyBiZWZv cmUuCj4gCj4gWWVzLCBpdCdzIG5vdCBuZWNlc3NhcnkgdG8gZG8gdGhpcyByZW9yZGVyaW5nIGFz IHJlZ2FyZHMgdG8ga3Byb2JlLgoKTGV0IG1lIGNvbmZpcm0sIEkgbWVhbnQgdGhhdCB5b3VyIGN1 cnJlbnQgcGF0Y2ggaXMgY29ycmVjdC4gSSBqdXN0IG1lbnRpb25lZAp0aGF0IGtwcm9iZV9idXN5 X3tiZWdpbixlbmR9IHdpbGwgY29udGludWUgdXNlIHN0YW5kYXJkIHZlcnNpb24gYmVjYXVzZQpr cHJvYmUgaXRzZWxmIGhhbmRsZXMgdGhhdC4gUGxlYXNlIHVwZGF0ZSBvbmx5IHRoZSBwYXRjaCBk ZXNjcmlwdGlvbiBhbmQKYWRkIG15IGFjay4KCkFja2VkLWJ5OiBNYXNhbWkgSGlyYW1hdHN1IChH b29nbGUpIDxtaGlyYW1hdEBrZXJuZWwub3JnPgoKSWYgeW91IGFkZCBTdGV2ZSdzIGNhbGwgZ3Jh cGggZm9yIHRoZSBleHBsYW5hdGlvbiwgaXQgd2lsbCBoZWxwIHVzIHRvCnVuZGVyc3RhbmQgd2hh dCB3aWxsIGJlIGZpeGVkLgoKVGhhbmsgeW91LAoKPiAKPiBUaGFua3MgZm9yIHlvdXIgcmV2aWV3 Lgo+IAo+IEknbGwgcmViYXNlIG9udG8gdGhlIGxhdGVzdCB0cmVlIGFuZCBzZW5kIHYzIEFTQVAu Cj4gCj4gUmVnYXJkcywKPiBaZQo+IAo+IE9uIFdlZCwgTWF5IDE3LCAyMDIzIGF0IDEyOjAz4oCv QU0gTWFzYW1pIEhpcmFtYXRzdSA8bWhpcmFtYXRAa2VybmVsLm9yZz4gd3JvdGU6Cj4gPgo+ID4g T24gVHVlLCAxNiBNYXkgMjAyMyAxNzo0Nzo1MiArMDgwMAo+ID4gWmUgR2FvIDx6ZWdhbzIwMjFA Z21haWwuY29tPiB3cm90ZToKPiA+Cj4gPiA+IFByZWNpc2VseSwgdGhlc2UgdGhhdCBhcmUgY2Fs bGVkIHdpdGhpbiBrcHJvYmVfYnVzeV97YmVnaW4sIGVuZH0sCj4gPiA+IHdoaWNoIHRoZSBwcmV2 aW91cyBwYXRjaCBkb2VzIG5vdCByZXNvbHZlLgo+ID4KPiA+IE5vdGUgdGhhdCBrcHJvYmVfYnVz eV97YmVnaW4sZW5kfSBkb24ndCBuZWVkIHRvIHVzZSBub3RyYWNlIHZlcnNpb24KPiA+IGJlY2F1 c2Uga3Byb2JlIGl0c2VsZiBwcm9oaWJpdHMgcHJvYmluZyBvbiBwcmVlbXB0X2NvdW50X3thZGQs c3VifS4KPiA+Cj4gPiBUaGFuayB5b3UsCj4gPgo+ID4gPiBJIHdpbGwgcmVmaW5lIHRoZSBjb21t aXQgbWVzc2FnZSB0byBtYWtlIGl0IGNsZWFyLgo+ID4gPgo+ID4gPiBGWUksIGRldGFpbHMgY2Fu IGNoZWNrZWQgb3V0IGhlcmU6Cj4gPiA+ICAgICBMaW5rOiBodHRwczovL2xvcmUua2VybmVsLm9y Zy9saW51eC10cmFjZS1rZXJuZWwvMjAyMzA1MTYxMzI1MTYuYzkwMmVkY2YyMTAyODg3NGE3NGZi ODY4QGtlcm5lbC5vcmcvCj4gPiA+Cj4gPiA+IFJlZ2FyZHMsCj4gPiA+IFplCj4gPiA+Cj4gPiA+ IE9uIFR1ZSwgTWF5IDE2LCAyMDIzIGF0IDU6MTjigK9QTSBQZXRlciBaaWpsc3RyYSA8cGV0ZXJ6 QGluZnJhZGVhZC5vcmc+IHdyb3RlOgo+ID4gPiA+Cj4gPiA+ID4gT24gVHVlLCBNYXkgMTYsIDIw MjMgYXQgMDM6MTg6MjhQTSArMDgwMCwgWmUgR2FvIHdyb3RlOgo+ID4gPiA+ID4gQ3VycmVudCBp bXBsZW1lbnRhdGlvbiBjYWxscyBrcHJvYmUgcmVsYXRlZCBmdW5jdGlvbnMgYmVmb3JlIGRvaW5n Cj4gPiA+ID4gPiBmdHJhY2UgcmVjdXJzaW9uIGNoZWNrIGluIGZwcm9iZV9rcHJvYmVfaGFuZGxl ciwgd2hpY2ggb3BlbnMgZG9vcgo+ID4gPiA+ID4gdG8ga2VybmVsIGNyYXNoIGR1ZSB0byBzdGFj ayByZWN1cnNpb24gaWYgcHJlZW1wdF9jb3VudF97YWRkLCBzdWJ9Cj4gPiA+ID4gPiBpcyB0cmFj ZWFibGUuCj4gPiA+ID4KPiA+ID4gPiBXaGljaCBwcmVlbXB0X2NvdW50KigpIGFyZSB5b3UgcmVm ZXJyaW5nIHRvPyBUaGUgb25lcyB5b3UganVzdCBtYWRlCj4gPiA+ID4gX25vdHJhY2UgaW4gdGhl IHByZXZpb3VzIHBhdGNoPwo+ID4KPiA+Cj4gPiAtLQo+ID4gTWFzYW1pIEhpcmFtYXRzdSAoR29v Z2xlKSA8bWhpcmFtYXRAa2VybmVsLm9yZz4KCgotLSAKTWFzYW1pIEhpcmFtYXRzdSAoR29vZ2xl KSA8bWhpcmFtYXRAa2VybmVsLm9yZz4KCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fCmxpbnV4LXJpc2N2IG1haWxpbmcgbGlzdApsaW51eC1yaXNjdkBsaXN0 cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGlu Zm8vbGludXgtcmlzY3YK