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Sat, 07 Mar 2026 14:53:13 -0500 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 9515E4448E; Sat, 7 Mar 2026 19:53:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4F9BDC19422; Sat, 7 Mar 2026 19:53:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772913191; bh=OOKfroUsa/NmmKFDrQXJY1cwDi1GkvGCyavkONtRuAE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nZ5QELcoMuG41M0Ort6CBbgWBlrPLDffM800Pa/YGNHxMqHuaiF6S1uvEq7kfoAII 4HpywoSmkdPuBh1Qna0XgF96VrlqLyhKjlQwGy30+WidGvYBg9wGi+5mZ39uqkHAwd 7qhdF28Ml9WH8Ra3CeXA9b00Fmy0I6FFuAu+AcwMQ2xolyyJjT8Rs7TBOWwQcxLmuX XrPcVEUGQXRNSkQvxQOe5o8Zt46ixQmsgNLKO/bYQHWuNOWvAzl5M7EnP5+52ZNIY9 x8jPazCyDgesdjRmSLPGslt3DrtzvlTHQh6B+gE9BMtKnt8Cc0tEHbq2u+uj4XYhzM jyLG1zyBmdFzA== From: deller@kernel.org To: qemu-devel@nongnu.org Cc: Richard Henderson , Warner Losh , Laurent Vivier , Pierrick Bouvier , Helge Deller , =?UTF-8?q?Alex=20Benn=C3=A9e?= , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Kyle Evans , Paolo Bonzini Subject: [PATCH 09/12] bsd-user: Deal with mmap where start > reserved_va Date: Sat, 7 Mar 2026 20:52:40 +0100 Message-ID: <20260307195243.8813-10-deller@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260307195243.8813-1-deller@kernel.org> References: <20260307195243.8813-1-deller@kernel.org> MIME-Version: 1.0 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=2600:3c0a:e001:78e:0:1991:8:25; envelope-from=deller@kernel.org; helo=sea.source.kernel.org 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, DKIMWL_WL_HIGH=-0.001, 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 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: qemu development 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 @kernel.org) X-ZM-MESSAGEID: 1772913223201158500 Content-Type: text/plain; charset="utf-8" From: Bingwu Zhang Fixes: f12294b5bd21 ("bsd-user: Use page_find_range_empty for mmap_find_vma= _reserved") Signed-off-by: Bingwu Zhang Reviewed-by: Helge Deller Reviewed-by: Warner Losh Signed-off-by: Helge Deller --- bsd-user/mmap.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c index 24ba1728eb..fe77eceb48 100644 --- a/bsd-user/mmap.c +++ b/bsd-user/mmap.c @@ -258,12 +258,14 @@ abi_ulong mmap_next_start =3D TASK_UNMAPPED_BASE; static abi_ulong mmap_find_vma_reserved(abi_ulong start, abi_ulong size, abi_ulong alignment) { - abi_ulong ret; + abi_ulong ret =3D -1; =20 - ret =3D page_find_range_empty(start, reserved_va, size, alignment); + if (start <=3D reserved_va) { + ret =3D page_find_range_empty(start, reserved_va, size, alignment); + } if (ret =3D=3D -1 && start > TARGET_PAGE_SIZE) { /* Restart at the beginning of the address space. */ - ret =3D page_find_range_empty(TARGET_PAGE_SIZE, start - 1, + ret =3D page_find_range_empty(TARGET_PAGE_SIZE, MIN(start - 1, res= erved_va), size, alignment); } =20 --=20 2.53.0