From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 010887581B; Mon, 15 Apr 2024 12:50:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713185445; cv=none; b=RL1gxotVsRd6oLB60TpGmT3WLTgYzqQeaEHl6IhaAC7XBpj+R9qq/+VzGN1fMTZi1Su/KG3LdaAthceh+FQJBsQrFZhEUFCj0B0DSLzdbSAD2ZFGJBKshTniVTrZJZvkRCvFte8DYHXwKtcfa32ukaMz86o/az10I3Zc/h5lC2I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713185445; c=relaxed/simple; bh=9WgubhEyjIntDb8goamQgfEtmkM2n3g7m1ut+oETaNg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=qc8SvhYc/nA4nOr8766llZnjrBnFvrDS/aTzauryy8TG1uwKeDxrGAVvJ+Ut4fK5gzOhyPxA07Ay+jPF3WLqiGO9aPMhrvIl8LM6VECZjvWJymOePddZnhykrdHmcw4/RVKSihY195/C9DivGUBjaiX+YqQJ7O6hHF38VBGHmu8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ocAQeneK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ocAQeneK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BF86BC113CC; Mon, 15 Apr 2024 12:50:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713185444; bh=9WgubhEyjIntDb8goamQgfEtmkM2n3g7m1ut+oETaNg=; h=From:To:Cc:Subject:Date:From; b=ocAQeneKpzKhpF99Tt/dEaC7PxMcQsj/vF/dL/kHf8Z1Iws/J6ivQHe4iveyGR3UM 2xBGkiIzASN0AbQsqXYxwFu303Ye0uxV0Mr1RU+68vCcA6HIlfZvbJJ9fpO15qGgrC IxQD57wiBWoICprZrQsyJ0aHSqysjbbENNRQQcv7eaDBDTzXdRhPZgK2PdTFcMXm74 /TVjr7ec+PaQ7bP7lx701VJBnPtza3cXC/6TjlTNxujccwbMulw91OvWT0AgGds6sl BcWZh1BGrCsoND9+H4wnylUPFSQ3DHpY2Z4Td8M3b5HRUlmSx6r4JRMiRkJ2Qc8rdv HiipbGnBGutwg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Takashi Iwai , syzbot+7fb05ccf7b3d2f9617b3@syzkaller.appspotmail.com, Sasha Levin , perex@perex.cz, tiwai@suse.com, linux-sound@vger.kernel.org Subject: [PATCH AUTOSEL 5.15 1/4] ALSA: line6: Zero-initialize message buffers Date: Mon, 15 Apr 2024 06:04:43 -0400 Message-ID: <20240415100449.3127574-1-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.15.155 Content-Transfer-Encoding: 8bit From: Takashi Iwai [ Upstream commit c4e51e424e2c772ce1836912a8b0b87cd61bc9d5 ] For shutting up spurious KMSAN uninit-value warnings, just replace kmalloc() calls with kzalloc() for the buffers used for communications. There should be no real issue with the original code, but it's still better to cover. Reported-by: syzbot+7fb05ccf7b3d2f9617b3@syzkaller.appspotmail.com Closes: https://lore.kernel.org/r/00000000000084b18706150bcca5@google.com Message-ID: <20240402063628.26609-1-tiwai@suse.de> Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/usb/line6/driver.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c index b67617b68e509..f4437015d43a7 100644 --- a/sound/usb/line6/driver.c +++ b/sound/usb/line6/driver.c @@ -202,7 +202,7 @@ int line6_send_raw_message_async(struct usb_line6 *line6, const char *buffer, struct urb *urb; /* create message: */ - msg = kmalloc(sizeof(struct message), GFP_ATOMIC); + msg = kzalloc(sizeof(struct message), GFP_ATOMIC); if (msg == NULL) return -ENOMEM; @@ -688,7 +688,7 @@ static int line6_init_cap_control(struct usb_line6 *line6) int ret; /* initialize USB buffers: */ - line6->buffer_listen = kmalloc(LINE6_BUFSIZE_LISTEN, GFP_KERNEL); + line6->buffer_listen = kzalloc(LINE6_BUFSIZE_LISTEN, GFP_KERNEL); if (!line6->buffer_listen) return -ENOMEM; @@ -697,7 +697,7 @@ static int line6_init_cap_control(struct usb_line6 *line6) return -ENOMEM; if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) { - line6->buffer_message = kmalloc(LINE6_MIDI_MESSAGE_MAXLEN, GFP_KERNEL); + line6->buffer_message = kzalloc(LINE6_MIDI_MESSAGE_MAXLEN, GFP_KERNEL); if (!line6->buffer_message) return -ENOMEM; -- 2.43.0