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[213.67.3.247]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-52e7ab2776bsm1553637e87.175.2024.07.01.15.44.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Jul 2024 15:44:24 -0700 (PDT) From: "Edgar E. Iglesias" To: qemu-devel@nongnu.org Cc: sstabellini@kernel.org, anthony@xenproject.org, paul@xen.org, edgar.iglesias@amd.com, xen-devel@lists.xenproject.org, Paolo Bonzini , Peter Xu , David Hildenbrand , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH v1 1/2] physmem: Bail out qemu_ram_block_from_host() for invalid ram addrs Date: Tue, 2 Jul 2024 00:44:20 +0200 Message-ID: <20240701224421.1432654-2-edgar.iglesias@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240701224421.1432654-1-edgar.iglesias@gmail.com> References: <20240701224421.1432654-1-edgar.iglesias@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::12e; envelope-from=edgar.iglesias@gmail.com; helo=mail-lf1-x12e.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, FREEMAIL_FROM=0.001, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: "Edgar E. Iglesias" Bail out in qemu_ram_block_from_host() when xen_ram_addr_from_mapcache() does not find an existing mapping. Signed-off-by: Edgar E. Iglesias Reviewed-by: Alex Bennée Reviewed-by: Stefano Stabellini --- system/physmem.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/system/physmem.c b/system/physmem.c index 33d09f7571..59d1576c2b 100644 --- a/system/physmem.c +++ b/system/physmem.c @@ -2277,6 +2277,10 @@ RAMBlock *qemu_ram_block_from_host(void *ptr, bool round_offset, ram_addr_t ram_addr; RCU_READ_LOCK_GUARD(); ram_addr = xen_ram_addr_from_mapcache(ptr); + if (ram_addr == RAM_ADDR_INVALID) { + return NULL; + } + block = qemu_get_ram_block(ram_addr); if (block) { *offset = ram_addr - block->offset;