5.10-stable review patch. If anyone has any objections, please let me know.
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From: Christophe JAILLET christophe.jaillet@wanadoo.fr
[ Upstream commit c977950146720abff14e46d8c53f5638b06a9182 ]
This error handling looks really strange. Check if the string has been truncated instead.
Fixes: 02ab994635eb ("crypto: hisilicon - Fixed some tiny bugs of HPRE") Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/crypto/hisilicon/hpre/hpre_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/hisilicon/hpre/hpre_main.c b/drivers/crypto/hisilicon/hpre/hpre_main.c index a33394d91bbf8..8da9d6dc6e87a 100644 --- a/drivers/crypto/hisilicon/hpre/hpre_main.c +++ b/drivers/crypto/hisilicon/hpre/hpre_main.c @@ -637,7 +637,7 @@ static int hpre_cluster_debugfs_init(struct hisi_qm *qm)
for (i = 0; i < HPRE_CLUSTERS_NUM; i++) { ret = snprintf(buf, HPRE_DBGFS_VAL_MAX_LEN, "cluster%d", i); - if (ret < 0) + if (ret >= HPRE_DBGFS_VAL_MAX_LEN) return -EINVAL; tmp_d = debugfs_create_dir(buf, qm->debug.debug_root);