From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9D79C329C6D; Sat, 30 May 2026 17:59:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780163951; cv=none; b=MQKb0jaVaQ013pEfhQfMqogQeneSo2//RMmuXaAK9V2dOt45GHqWv19YtA2JZrghy9ovCFqRK8XZ3o14kye7ZFvSuBcsiz9rr7QkmRF1WSWftSF/wOinr6R9Z9LB546tsNcIaa/wPFoHBGwjatXJGcX70HoM7X1SSOID0dSA32k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780163951; c=relaxed/simple; bh=bmJglTggB79cwWSRCvFN4Y1jrc0remEl++Ei1a4lNkM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EAiOrFxZ8FTG/TGC4Uir0TGPSwVBadumtZWJNpkB3V/1P7ZIHpevm1YRR5GpeuRkA904sFVGbNu8EqqyM0LHQh3hDCsHLr5SOR/yMx3cIFv0s0WFm+wmC/Bno+KNq9TvIkW2lPFztdIaSVaHna0s07npRHIJ/9yR9wxldMcTT7w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=k4uIlMcC; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="k4uIlMcC" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E12DC1F00893; Sat, 30 May 2026 17:59:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780163950; bh=jF8qOS3ENNPvlGKDLz+x4/r2zZtWWuqJU8AuGXngiLw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=k4uIlMcCRanezf0gk7wNMIEt3Y1RPEylo2X6QZkI3WKKPcafcyPKPaEfYfDuGPzRM 2ZMS7O1SFwlS6VTdAMrMy1MKdWj+ipt8vMYGBWHBP8U6x95Hf56F/sREGJaxu+NoEn odD+dIQwMb2FtzcWk8jU/GP2E+4APYhNYZC/PUsI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alexei Starovoitov , "Christian Brauner (Microsoft)" , KP Singh , Frederick Lawler , Paul Moore , Sasha Levin Subject: [PATCH 5.15 410/776] bpf-lsm: Make bpf_lsm_userns_create() sleepable Date: Sat, 30 May 2026 18:02:04 +0200 Message-ID: <20260530160251.086967557@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260530160240.228940103@linuxfoundation.org> References: <20260530160240.228940103@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Frederick Lawler [ Upstream commit 401e64b3a4af4c7a2f6a00337232a3cf0bb757ed ] Users may want to audit calls to security_create_user_ns() and access user space memory. Also create_user_ns() runs without pagefault_disabled(). Therefore, make bpf_lsm_userns_create() sleepable for mandatory access control policies. Acked-by: Alexei Starovoitov Acked-by: Christian Brauner (Microsoft) Acked-by: KP Singh Signed-off-by: Frederick Lawler Signed-off-by: Paul Moore Stable-dep-of: beaf0e96b1da ("bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks") Signed-off-by: Sasha Levin --- kernel/bpf/bpf_lsm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c index 06062370c3b81..c9e785ab62cf0 100644 --- a/kernel/bpf/bpf_lsm.c +++ b/kernel/bpf/bpf_lsm.c @@ -212,6 +212,7 @@ BTF_ID(func, bpf_lsm_task_getsecid_obj) BTF_ID(func, bpf_lsm_task_prctl) BTF_ID(func, bpf_lsm_task_setscheduler) BTF_ID(func, bpf_lsm_task_to_inode) +BTF_ID(func, bpf_lsm_userns_create) BTF_SET_END(sleepable_lsm_hooks) bool bpf_lsm_is_sleepable_hook(u32 btf_id) -- 2.53.0