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([75.147.178.105]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-739d97ee2d9sm2171755b3a.39.2025.04.03.18.09.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Apr 2025 18:09:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1743728973; x=1744333773; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=diH6J4hofBmrfzs6sIeDZ95DC3OrtgE6crTHghEG7+s=; b=ABzPzSOXmfE4BFkJC8Cof5GE8klzGF4axLSMMviLuP/7yF63XE86fB0IzXxvyqGsp6 ZBUf5nmoa2VA2PqUeKHC1lZcHpRZuMvSS3Uqj7/m4GuTvWrXXUHKAjeKEoHCEr4va+6Q l9BNgHDjdkZi4FFkdnhTgbbaRgZ5fCAvk7FxPIkmkSnKkX9/jePWYbTtDrcFugi2csjA UTgsgbg9flpSw/79S8ddA0rYb7qcOhIwJ/MSp08rm4N1xfVapsMUaNshNCU+ZcMyxX2d Fg7jN8kRnYZq93twHmm73cuNCF3bdo58w3UMU+4QblOqEpuyorSs2kzmR4SmOOLGR4qE fajQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743728973; x=1744333773; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=diH6J4hofBmrfzs6sIeDZ95DC3OrtgE6crTHghEG7+s=; b=MS1+N8FzMzrdD65sKxgZNqrjCt4sSFyH9YitaYh4x1kqJNCuUL79bqDtngh2jparii ah7TEDs+hm0YNrVlXhls3fXiAHWupXHO5N5fAihcJjb3RUsHcvOtUQUOhse3bFJ/9u1H pSowQyNN0Job0v55yW3MVIw9kHePAbfxw1KNdIqAUzeHRh/51/VZ486jYo4JVNjGYf94 IavBLaGdW5yLSXL7KjZRqMq4hThvsJXxvuSzSHXUduZRoki86yWuZTz9wXLrDpkChbBr hwyB7ODdt/kUuyZVts2cq7n3dRiUWXmiaU/xnHT+NodIBCpFU0hTBRRs8Wa7PEiC7yl8 jh4A== X-Gm-Message-State: AOJu0YwJ6/Sc2sI3/7V9zXbjF8pHHabdXqnb3fterX0Q18Y6rvHMUk6E +fHDGNskfxawbGCQQwGzUzicLUO9oEox8L3DeyQc0BnbHUNKm/4xU11bagY1AeIwVi1MQWym3ez k X-Gm-Gg: ASbGncvWTAF76ic3HGZQFk5Yc0X8VwsU5GM/cxVsfgmCkLzWTn5/8C6ye7j7mu4/2mK iKEreX7CD1IlSvU7+WLji8YU0yQki1kIjvXrw0ew9GkM74JmRb0nhkPmzxTXQBdx5xQntn52caU 52lButRaFK1LOXyatDmcIKXggCtv6x1QMKbK9RikFT7tPw3caYhyJ9jdAd4IkO0X412mcMmsaZS qzUhKSUsirCQoy9MQzhpoWFJuXCt6dDdsgvU6FD4ZGw6kaY/Jo3CIr+wd3gkUk4IVeXChn7mbVT A9oxfI4Kkt3WVffgP9984vL0tiAXJxa1y7tu+Yjwlug1AiqtGzg= X-Google-Smtp-Source: AGHT+IFHAJWsn0/232DMzmabORd90A1qyfzVFI0jo9fJEJ23sQJaR/n1PYuoo1Jprzp67CAbrIXHcQ== X-Received: by 2002:a05:6a00:228e:b0:736:62a8:e52d with SMTP id d2e1a72fcca58-739e4b5c16fmr2348934b3a.12.1743728973165; Thu, 03 Apr 2025 18:09:33 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Michael Tokarev , Helge Konetzka Subject: [PULL 1/6] tcg: Allocate TEMP_VAL_MEM frame in temp_load() Date: Thu, 3 Apr 2025 18:09:25 -0700 Message-ID: <20250404010930.164329-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250404010930.164329-1-richard.henderson@linaro.org> References: <20250404010930.164329-1-richard.henderson@linaro.org> 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=2607:f8b0:4864:20::42b; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1743728996821019000 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> --- tcg/tcg.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tcg/tcg.c b/tcg/tcg.c index e8950df2ad..dfd48b8264 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -4671,6 +4671,9 @@ 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 2.43.0