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([71.212.149.95]) by smtp.gmail.com with ESMTPSA id e6-20020a170902d38600b001c731b62403sm4271910pld.218.2023.11.13.09.32.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Nov 2023 09:32:42 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Helge Deller , Peter Maydell Subject: [PULL 05/12] target/hppa: Fix possible overflow in TLB size calculation Date: Mon, 13 Nov 2023 09:32:30 -0800 Message-Id: <20231113173237.48233-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231113173237.48233-1-richard.henderson@linaro.org> References: <20231113173237.48233-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::634; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x634.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, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Helge Deller Coverty found that the shift of TARGET_PAGE_SIZE (32-bit type) might overflow. Fix it by casting TARGET_PAGE_SIZE to a 64-bit type before doing the shift (CID 1523902 and CID 1523908). Reported-by: Peter Maydell Signed-off-by: Helge Deller Message-Id: Reviewed-by: Richard Henderson Signed-off-by: Richard Henderson --- target/hppa/mem_helper.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/hppa/mem_helper.c b/target/hppa/mem_helper.c index 858ce6ec7f..a13f200359 100644 --- a/target/hppa/mem_helper.c +++ b/target/hppa/mem_helper.c @@ -450,7 +450,7 @@ static void itlbt_pa20(CPUHPPAState *env, target_ulong r1, int mask_shift; mask_shift = 2 * (r1 & 0xf); - va_size = TARGET_PAGE_SIZE << mask_shift; + va_size = (uint64_t)TARGET_PAGE_SIZE << mask_shift; va_b &= -va_size; va_e = va_b + va_size - 1; @@ -505,7 +505,7 @@ static void ptlb_work(CPUState *cpu, run_on_cpu_data data) */ end = start & 0xf; start &= TARGET_PAGE_MASK; - end = TARGET_PAGE_SIZE << (2 * end); + end = (vaddr)TARGET_PAGE_SIZE << (2 * end); end = start + end - 1; hppa_flush_tlb_range(env, start, end);