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[177.4.161.23]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-304ed5a9d27sm7315561eec.25.2026.05.31.16.25.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 31 May 2026 16:25:38 -0700 (PDT) Message-ID: Date: Sun, 31 May 2026 20:25:35 -0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] ALSA: seq: Use flexible array for device arguments To: Takashi Iwai Cc: Takashi Iwai , Jaroslav Kysela , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, notify@kernel.org References: <20260529-alsa-seq-flex-args-v1-1-bb3ff5c62d49@gmail.com> <871perpujb.wl-tiwai@suse.de> From: =?UTF-8?Q?C=C3=A1ssio_Gabriel_Monteiro_Pires?= Content-Language: en-US In-Reply-To: <871perpujb.wl-tiwai@suse.de> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------049zIao8DuoP3DSZV0OYtvMV" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------049zIao8DuoP3DSZV0OYtvMV Content-Type: multipart/mixed; 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charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 5/31/26 10:39, Takashi Iwai wrote: >> diff --git a/sound/core/seq_device.c b/sound/core/seq_device.c >> index 1b062d6b17ea..a7b69ff07261 100644 >> --- a/sound/core/seq_device.c >> +++ b/sound/core/seq_device.c >> @@ -234,7 +234,10 @@ int snd_seq_device_new(struct snd_card *card, int= device, const char *id, >> if (snd_BUG_ON(!id)) >> return -EINVAL; >> =20 >> - dev =3D kzalloc(sizeof(*dev) + argsize, GFP_KERNEL); >> + if (argsize < 0) >> + return -EINVAL; >> + >> + dev =3D kzalloc(struct_size(dev, args, argsize), GFP_KERNEL); >> if (!dev) >> return -ENOMEM; >=20 > IIRC, we can use kzalloc_flex() for this kind, too: >=20 > dev =3D kzalloc_flex(*dev, args, argsize); Thanks, I missed kzalloc_flex(). I=E2=80=99ll keep the negative argsize check in v2, so invalid callers get -EINVAL before the count is converted to size_t. --=20 Thanks, C=C3=A1ssio --------------qGH6wHWtj2aQrikTakDqTzs3-- --------------049zIao8DuoP3DSZV0OYtvMV Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature.asc" -----BEGIN PGP SIGNATURE----- wnsEABYIACMWIQSrYqI5vIrg1X9eqEjQXT8aWv/ugwUCahzDbwUDAAAAAAAKCRDQXT8aWv/ug+Qw AQCaX5JaCnT1CEQdeXyaSZG2awgxnQWe1o6DQRe8sleWdwD9Fu8mcQSX12uIB8LB9bIARKUJEUSK 51XbGBKq1DNQOQA= =mxY6 -----END PGP SIGNATURE----- --------------049zIao8DuoP3DSZV0OYtvMV--