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 DCF9047D451; Sat, 12 Sep 2026 18:18:33 +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=1789237115; cv=none; b=QkHlMnTPH+RUuKZxstkYtolMIEYgprMOaVfYK4VhlaAQT4tFkc62DPbsJK1PYjrogbuwcgG/0L6+vhhTDX0khL42bEHqWg/7aLc0s7vfxxrpy/lmetQGe2XMcF02C/iRi+mg9kttGYmYVkNOyDXS0gCqcyavmti+Q8ei5A9Srt4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789237115; c=relaxed/simple; bh=r6fMdTzkTT97Wc7cUTXW+aQksJWrmIYPodiSmWv0vQA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fSLKTjp4wk7uzL2+tChNeh5m4igmyaYCftCD2RMSJD4vFqqoV1FVq7SG4y0nIA4tMnR3MJ6qvF7+aiR/BYQxHPMIh3aQeA1UfGdkut0x+m/J4CSsQw4Hmhcl2IG1FsQWQzbnbKnWdr+j6Ha0FC+4fyGgFeHGOz6vtgWgoNQeazQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=kLcOMuiN; 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="kLcOMuiN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9739A1F000FF; Sat, 12 Sep 2026 18:18:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789237113; bh=GOjKDCyg7fkT01PePmTEVPpok7eq+nQME+or4cgG6DI=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=kLcOMuiNwjUJaqZoR1nZVSBgaKFFG7BhbwMeBUh+oFI9eM9y10DeQCnBNlwWSFa0I MOyH8L10kN//toao4RPTkTk2tN6geuhVJwCHPGBZiTcfr5ogytmVX41TakNhc9+fKA DIS6GttLODf61ZL/PWvhpILm/687Qxjt7fzsJVZI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Runyu Xiao , Takashi Iwai Subject: [PATCH 5.15 193/935] ALSA: pcxhr: initialize mutexes before requesting threaded IRQ Date: Sat, 12 Sep 2026 08:53:43 +0200 Message-ID: <20260912065531.243550612@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065526.833703348@linuxfoundation.org> References: <20260912065526.833703348@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: Runyu Xiao commit 6c97817e20598e5473094e0e38d1f51f1cf4dfff upstream. pcxhr_probe() requests pcxhr_threaded_irq() before initializing mgr->lock, even though the threaded handler takes that mutex. Initialize the manager locks before request_threaded_irq() so an early interrupt cannot run against uninitialized mutex state during probe. Fixes: 9bef72bdb26e ("ALSA: pcxhr: Use nonatomic PCM ops") Cc: stable@vger.kernel.org Signed-off-by: Runyu Xiao Link: https://patch.msgid.link/20260818144717.2269918-1-runyu.xiao@seu.edu.cn Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman --- sound/pci/pcxhr/pcxhr.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) --- a/sound/pci/pcxhr/pcxhr.c +++ b/sound/pci/pcxhr/pcxhr.c @@ -1551,6 +1551,13 @@ static int pcxhr_probe(struct pci_dev *p mgr->pci = pci; mgr->irq = -1; + /* ISR lock */ + mutex_init(&mgr->lock); + mutex_init(&mgr->msg_lock); + + /* init setup mutex*/ + mutex_init(&mgr->setup_mutex); + if (request_threaded_irq(pci->irq, pcxhr_interrupt, pcxhr_threaded_irq, IRQF_SHARED, KBUILD_MODNAME, mgr)) { @@ -1564,13 +1571,6 @@ static int pcxhr_probe(struct pci_dev *p "Digigram at 0x%lx & 0x%lx, 0x%lx irq %i", mgr->port[0], mgr->port[1], mgr->port[2], mgr->irq); - /* ISR lock */ - mutex_init(&mgr->lock); - mutex_init(&mgr->msg_lock); - - /* init setup mutex*/ - mutex_init(&mgr->setup_mutex); - mgr->prmh = kmalloc(sizeof(*mgr->prmh) + sizeof(u32) * (PCXHR_SIZE_MAX_LONG_STATUS - PCXHR_SIZE_MAX_STATUS),