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Bennett" , Jaroslav Kysela , Takashi Iwai , linux-kernel@vger.kernel.org (open list) Subject: [PATCH] ALSA: usb-audio: Use flexible allocation for FCP packets Date: Mon, 18 May 2026 17:48:34 -0700 Message-ID: <20260519004834.627676-1-rosenp@gmail.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Allocate FCP request and response packets with kmalloc_flex() for the trailing packet data instead of passing the computed struct size directly to kmalloc(). Keep the computed packet sizes for the USB transfer length checks. Assisted-by: Codex:GPT-5.5 Signed-off-by: Rosen Penev --- sound/usb/fcp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/usb/fcp.c b/sound/usb/fcp.c index 0fc4d063c48a..ea746bdb36ff 100644 --- a/sound/usb/fcp.c +++ b/sound/usb/fcp.c @@ -191,13 +191,13 @@ static int fcp_usb(struct usb_mixer_interface *mixer,= u32 opcode, =20 struct fcp_usb_packet *req __free(kfree) =3D NULL; size_t req_buf_size =3D struct_size(req, data, req_size); - req =3D kmalloc(req_buf_size, GFP_KERNEL); + req =3D kmalloc_flex(*req, data, req_size); if (!req) return -ENOMEM; =20 struct fcp_usb_packet *resp __free(kfree) =3D NULL; size_t resp_buf_size =3D struct_size(resp, data, resp_size); - resp =3D kmalloc(resp_buf_size, GFP_KERNEL); + resp =3D kmalloc_flex(*resp, data, resp_size); if (!resp) return -ENOMEM; =20 --=20 2.54.0