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Miller" , , Dan Douglass , Radu Alexe , Tudor Ambarus Subject: [PATCH 2/5] crypto: caampkc - avoid kzalloc(0) in caam_read_raw_data Date: Tue, 25 Apr 2017 16:26:36 +0300 Message-ID: <20170425132639.20178-3-horia.geanta@nxp.com> X-Mailer: git-send-email 2.12.0.264.gd6db3f216544 In-Reply-To: <20170425132639.20178-1-horia.geanta@nxp.com> References: <20170425132639.20178-1-horia.geanta@nxp.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-Matching-Connectors: 131376004332413834; (91ab9b29-cfa4-454e-5278-08d120cd25b8); () X-Forefront-Antispam-Report: CIP:192.88.158.2; IPV:NLI; CTRY:US; EFV:NLI; SFV:NSPM; SFS:(10009020)(6009001)(336005)(39840400002)(39410400002)(39850400002)(39400400002)(39450400003)(39860400002)(39380400002)(2980300002)(1109001)(1110001)(339900001)(189002)(199003)(9170700003)(23676002)(5820100001)(4326008)(356003)(305945005)(50466002)(50226002)(8676002)(53936002)(54906002)(8936002)(5660300001)(85426001)(36756003)(81166006)(6666003)(6916009)(2950100002)(2906002)(106466001)(77096006)(8656002)(2870700001)(86362001)(76176999)(47776003)(50986999)(110136004)(33646002)(1076002)(105606002)(189998001)(104016004)(38730400002); 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Ip=[192.88.158.2]; Helo=[az84smr01.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN3PR0301MB1186 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Tudor Ambarus The function returns NULL if buf is composed only of zeros. Signed-off-by: Tudor Ambarus Signed-off-by: Horia Geantă --- drivers/crypto/caam/caampkc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/crypto/caam/caampkc.c b/drivers/crypto/caam/caampkc.c index 49cbdcba7883..999ba18495b0 100644 --- a/drivers/crypto/caam/caampkc.c +++ b/drivers/crypto/caam/caampkc.c @@ -374,6 +374,8 @@ static inline u8 *caam_read_raw_data(const u8 *buf, size_t *nbytes) buf++; (*nbytes)--; } + if (!*nbytes) + return NULL; val = kzalloc(*nbytes, GFP_DMA | GFP_KERNEL); if (!val)