From patchwork Tue Mar 5 13:38:52 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Karol Herbst X-Patchwork-Id: 13582419 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 36CA4C54E41 for ; Tue, 5 Mar 2024 13:39:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3A20210E1A4; Tue, 5 Mar 2024 13:39:00 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="OObaOxIR"; dkim-atps=neutral Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id 70D3510E1A4 for ; Tue, 5 Mar 2024 13:38:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1709645937; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=RZmDbi0/7NtmfurlLAzP54jPejCnlehzU2sr97TUoiA=; b=OObaOxIR2rZi7GO8+U2q/MPm1eChaqhouB0SyABlihD5NT2xn4TDkLK3QIwjkzbByUFLBC UQgUglBNiiJ1N9lK9xIEp626bAeqkTRzFZV5+GZCkZciufLRF04CtGRmoBxpHsfCo8ZG6l QNuTWOeTVQlT5NYnlxVq18kjOBPHFv8= Received: from mail-ej1-f70.google.com (mail-ej1-f70.google.com [209.85.218.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-417-MLy7EcRAPty9wBBzW2Yaqw-1; Tue, 05 Mar 2024 08:38:55 -0500 X-MC-Unique: MLy7EcRAPty9wBBzW2Yaqw-1 Received: by mail-ej1-f70.google.com with SMTP id a640c23a62f3a-a442979dc04so52129266b.1 for ; Tue, 05 Mar 2024 05:38:55 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709645935; x=1710250735; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=RZmDbi0/7NtmfurlLAzP54jPejCnlehzU2sr97TUoiA=; b=UzXceuZB5ITwGID8wC+vegA2l+Bn85e7q5RoxjrrDBA4xt8IVfDAFWPwrjQmUtB9es MaGoSZve8ZpEYh46dz+ldGVNNk33imjSEgs+HZ6yzftupYawJTZu8X2gn8YSXtCOwK8E GSUzOE9LZLVp0ynyUlLPSNVsd9lAvzeEPcLeV+yvQ34onvxcK3mnTo/gOMG4Mn/ZAOvi gzWXKL1XbWeNSg93VUcKCe7S6Ha7WZOVAgp+LA9WEy6PaYchbyM4w8YGM/2tlI+YIhXN GbK2EljpKW/IcIrq+oU+9WU7bNYnpKucVAMNr3cBmG6mfhDbqyPaQy8GiKR9UXEKTyd5 wBTw== X-Forwarded-Encrypted: i=1; AJvYcCWv3Fo3oYdphez4VyN6dkxMnujT0GEMv6pu/4VnpMXwHLEPEauafbgnQR4jMmcvXuliNIQcSrZytFxfmKQp2nsTES/rhplJl5aAjjK7pCs3 X-Gm-Message-State: AOJu0YwSCxGKEysgBPbf92/LOKDO9fLhcUbt27GqE6XI1e4nWIB2pjv+ +r1V3ITMWPCgcJW3vHUnrKgnzCCXmhxCLI+4fnwphxj2mvutiATXsQeaOhLYMB2JhGEhNQ307kF 9zvzZmjFThO7mvuP+h/3IQpUcdhfIPruYzlLcLTLjNo5oXaR7DMukNz5l8EJK6ma6xQ== X-Received: by 2002:a17:907:8e99:b0:a45:ac3d:c7b with SMTP id tx25-20020a1709078e9900b00a45ac3d0c7bmr392290ejc.0.1709645934810; Tue, 05 Mar 2024 05:38:54 -0800 (PST) X-Google-Smtp-Source: AGHT+IHoA5EnVACQYWqtrKszYM26SCh3o7LzluQPz/dl1CKgBblrnDtnRwmrcAiwSzosvNxTTtA1Fg== X-Received: by 2002:a17:907:8e99:b0:a45:ac3d:c7b with SMTP id tx25-20020a1709078e9900b00a45ac3d0c7bmr392262ejc.0.1709645934470; Tue, 05 Mar 2024 05:38:54 -0800 (PST) Received: from kherbst.pingu ([77.20.15.65]) by smtp.gmail.com with ESMTPSA id wk16-20020a170907055000b00a4532d289edsm2641326ejb.116.2024.03.05.05.38.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 05 Mar 2024 05:38:54 -0800 (PST) From: Karol Herbst To: linux-kernel@vger.kernel.org Cc: Lyude Paul , Danilo Krummrich , dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org, Karol Herbst , stable@vger.kernel.org Subject: [PATCH v2 1/2] drm/nouveau: fix stale locked mutex in nouveau_gem_ioctl_pushbuf Date: Tue, 5 Mar 2024 14:38:52 +0100 Message-ID: <20240305133853.2214268-1-kherbst@redhat.com> X-Mailer: git-send-email 2.44.0 MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" If VM_BIND is enabled on the client the legacy submission ioctl can't be used, however if a client tries to do so regardless it will return an error. In this case the clients mutex remained unlocked leading to a deadlock inside nouveau_drm_postclose or any other nouveau ioctl call. Fixes: b88baab82871 ("drm/nouveau: implement new VM_BIND uAPI") Cc: Danilo Krummrich Cc: # v6.6+ Signed-off-by: Karol Herbst Reviewed-by: Lyude Paul Reviewed-by: Danilo Krummrich Link: https://patchwork.freedesktop.org/patch/msgid/20240304183157.1587152-1-kherbst@redhat.com --- drivers/gpu/drm/nouveau/nouveau_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index 49c2bcbef1299..5a887d67dc0e8 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -764,7 +764,7 @@ nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data, return -ENOMEM; if (unlikely(nouveau_cli_uvmm(cli))) - return -ENOSYS; + return nouveau_abi16_put(abi16, -ENOSYS); list_for_each_entry(temp, &abi16->channels, head) { if (temp->chan->chid == req->channel) {