From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f202.google.com (mail-pf1-f202.google.com [209.85.210.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 706F83655CB for ; Fri, 22 May 2026 17:21:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.202 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779470514; cv=none; b=Q5+IBO9umYvO99BSoEI8rM2W4BukAy90a/HqjQseauyEaSZPe5fK7D7VcvmTmK9uVtrBt1e/mKkIGGa9g735uuoFADCvpNW+aYabzPTncgcZWUPW2olJUmZzv8UzOFiNRNyqTzLTE8WIphZX+4vVCe414fF4ysFKY7Nvne3cyxs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779470514; c=relaxed/simple; bh=nbM6CKBEq8mnqDVydCu94646WNYZnpPRKzWAFfsq49c=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=YEJJBqpx0VPg8uZbbgfagDRt1H8KrFe94NDjaYz9KU9SWy9quOVg31yBfoRyRmEAdAiYggb0Hd5XHx90ZB7R4TNN+FUUIwOpSMpH7x8pZTlILsKA83fFh4X/wSXhtwvWB5HTTmh1ThAfQim1jM13YAbGVyLtPu3ZVZXMNngvbr4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=tQ7sv0+I; arc=none smtp.client-ip=209.85.210.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="tQ7sv0+I" Received: by mail-pf1-f202.google.com with SMTP id d2e1a72fcca58-82fa1c94b37so7935231b3a.0 for ; Fri, 22 May 2026 10:21:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1779470512; x=1780075312; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:reply-to:from:to:cc :subject:date:message-id:reply-to; bh=3e6249WJI2MWSmRABK+hoCbw3HSBwCqH8h0PO+qNvxs=; b=tQ7sv0+IOcJoh8maD5SjR8aFy9u1z3EyLGImEBNV2n8z0eSvCSObrTuU5QraiYmqBD ZAcE9FAUG/7MHBRII/h7P2XwdI8DOQfGYLP2fPTfiKM/D/ZhS6CTP/0Jz+nmEK++5fGs G5OytQIebACiNxafZFP+HHk2W2MDu2LHB6paUgZMBV7WcKl+GMtRfyUFuNJljj1iXc+/ U77LDyYeC5wYOvFmiG81whadgZuaCkhS2rOqiSVddH+D4UEoXUmktU9iPhQeIi5IkrfP 7sf/7cDi4D4dFNeV1crrzL8oKEmOoGmjEZnBX7Ozjv5ORMLH3Vxgoomk5co7FVH8QWH0 ZQhg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779470512; x=1780075312; h=cc:to:from:subject:message-id:mime-version:date:reply-to :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=3e6249WJI2MWSmRABK+hoCbw3HSBwCqH8h0PO+qNvxs=; b=J+caIoiip6Vf/e2fp8I2p/APzoF6JlJj0VuFp/UHucaUaaNSLbg3iKk8zZkzvnfiRU ivu7bIUGyTV/yx1MOU41h42rHLVArgpJWWUr8Jm+Uy4IsF2D3emjVfGU1Wen0rSJfG1/ 6skee6hmn3zYtVsleEiskEriWmqU0qUOhGAPvCF3PsusL+WyZ+HRho4eeAy6P5SCtGyi KUArstGTpxvmHWSNr+FByxwztl0ilio+8LJlxesmAKTjJvZikFZ4ZlIbIIoUYdan2dnY K46INVGMLessBKqe3neh2Kcz/FoMzjU1R96Vkd/uN/qSNmYU93bNDy3z1pXX+GAeo5l9 fwlA== X-Forwarded-Encrypted: i=1; AFNElJ95DosNKvZAFhMHsP66MfWgQxVSHMawvF1M6873iWywBUXNKpAM3kfkY4BEyb88zXZjNGnemOMv7v5YryU=@vger.kernel.org X-Gm-Message-State: AOJu0Yz8W74q4omjEmh+9JboGBxzKFrNhvM+ZmW69Ago7WN/yFojeU1j NPMyPRskiPsqM2HOUhb5AG2B4Q/7l4ltSbpcc6IbCpRfEQBH/9PQxYu4AzykMkfI8RFkwC0auFM qshqe1w== X-Received: from pfmu16.prod.google.com ([2002:aa7:8390:0:b0:82f:5d4f:734f]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:2388:b0:82f:9a88:9092 with SMTP id d2e1a72fcca58-8414b5d1e03mr6517651b3a.33.1779470512322; Fri, 22 May 2026 10:21:52 -0700 (PDT) Reply-To: Sean Christopherson Date: Fri, 22 May 2026 10:21:48 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.54.0.794.g4f17f83d09-goog Message-ID: <20260522172151.3530267-1-seanjc@google.com> Subject: [PATCH v2 0/3] KVM: Fix guest_memfd binding overlap errno and selftest From: Sean Christopherson To: Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Zongyao Chen , Ackerley Tng , Sean Christopherson Content-Type: text/plain; charset="UTF-8" Fix a goof where KVM rejects guest_memfd bindings that overlap an existing binding with EINVAL instead of the intended EEXIST, and then add that specific scenario to testcase that's supposed to verify overlap checks. v2: - Collect Ackerley's reviews. - Keep the GPA overlap testcases (because why not). [Sean] - Add a patch to remove superfluous %s formatting. [Ackerley] v1: https://lore.kernel.org/all/20260518070943.2091287-1-ZongYao.Chen@linux.alibaba.com Sean Christopherson (1): KVM: selftests: Remove unnecessary "%s" formatting of a constant string Zongyao Chen (2): KVM: guest_memfd: Return -EEXIST for overlapping bindings KVM: selftests: Test guest_memfd binding overlap without GPA overlap .../selftests/kvm/set_memory_region_test.c | 31 ++++++++++++++++--- virt/kvm/guest_memfd.c | 1 + 2 files changed, 28 insertions(+), 4 deletions(-) base-commit: b7fbe9a1bf9ee6c967ef77d366ca58c35fcf1887 -- 2.54.0.794.g4f17f83d09-goog