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[217.132.71.241]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49cdce10148sm18749815e9.5.2026.08.31.14.22.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 31 Aug 2026 14:22:16 -0700 (PDT) From: Roi Klevansky To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Alex=20Benn=C3=A9e?= , Laurent Vivier , Helge Deller , Pierrick Bouvier , Roi Klevansky Subject: [PATCH 0/2] linux-user: return ENOMEM from madvise on unmapped ranges Date: Tue, 1 Sep 2026 00:20:38 +0300 Message-ID: <20260831212040.1833650-1-roiklevansky@gmail.com> X-Mailer: git-send-email 2.55.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::335; envelope-from=roiklevansky@gmail.com; helo=mail-wm1-x335.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-Mailman-Approved-At: Mon, 31 Aug 2026 19:54:06 -0400 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development 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 The kernel fails madvise() with ENOMEM when it is given a partially or a fully unmapped address range. qemu-user differed from this and returned 0 instead. Patch 1 makes target_madvise() check the range with page_check_range() and potentially fail with ENOMEM while still giving precedence to advice specific errors. Patch 2 adds test cases, calling madvise() with partially and fully unmapped address ranges. Roi Klevansky (2): linux-user: return ENOMEM from madvise on unmapped ranges tests/tcg: add linux-user test for madvise returning ENOMEM linux-user/mmap.c | 7 +++- tests/tcg/multiarch/linux/linux-madvise.c | 43 +++++++++++++++++++++++ 2 files changed, 49 insertions(+), 1 deletion(-) -- 2.55.0