From nobody Sat Nov 15 22:36:50 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1747227845296464.99301453915473; Wed, 14 May 2025 06:04:05 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uFBiB-0005U5-ND; Wed, 14 May 2025 08:59:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uFBhu-0004jB-KC; Wed, 14 May 2025 08:59:38 -0400 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uFBhr-0007uT-NX; Wed, 14 May 2025 08:59:34 -0400 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 871D9121AE9; Wed, 14 May 2025 15:57:49 +0300 (MSK) Received: from think4mjt.tls.msk.ru (mjtthink.wg.tls.msk.ru [192.168.177.146]) by tsrv.corpit.ru (Postfix) with ESMTP id 31FE520B857; Wed, 14 May 2025 15:57:59 +0300 (MSK) From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Michael Tokarev , Helge Konetzka , Richard Henderson Subject: [Stable-9.2.4 11/34] tcg: Allocate TEMP_VAL_MEM frame in temp_load() Date: Wed, 14 May 2025 15:57:33 +0300 Message-Id: <20250514125758.92030-11-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.5 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1747227847931116600 From: Philippe Mathieu-Daud=C3=A9 Be sure to allocate the temp frame if it wasn't. In the resolved issues, incomplete dead code elimination left a load at the top of an unreachable loop. We simply need to allocate the stack slot to avoid crashing. Fixes: c896fe29d6c ("TCG code generator") Reported-by: Michael Tokarev Reported-by: Helge Konetzka Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2891 Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2899 Signed-off-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson Signed-off-by: Richard Henderson Message-ID: <20250401144332.41615-1-philmd@linaro.org> (cherry picked from commit e139bc4b1772575e1f2dcf8e3dbe1df2b684ef1f) Signed-off-by: Michael Tokarev diff --git a/tcg/tcg.c b/tcg/tcg.c index 4578b185be..13f735b246 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -4461,6 +4461,9 @@ static void temp_load(TCGContext *s, TCGTemp *ts, TCG= RegSet desired_regs, ts->mem_coherent =3D 0; break; case TEMP_VAL_MEM: + if (!ts->mem_allocated) { + temp_allocate_frame(s, ts); + } reg =3D tcg_reg_alloc(s, desired_regs, allocated_regs, preferred_regs, ts->indirect_base); tcg_out_ld(s, ts->type, reg, ts->mem_base->reg, ts->mem_offset); --=20 2.39.5