devm_kasprintf() can return a NULL pointer on failure,but this
returned value in fme_perf_pmu_register is not checked.
Add NULL check in fme_perf_pmu_register, to handle kernel NULL
pointer dereference error.
Fixes: 724142f8c42a ("fpga: dfl: fme: add performance reporting support")
Signed-off-by: Charles Han <hanchunchao@xxxxxxxxxx>
---
drivers/fpga/dfl-fme-perf.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/fpga/dfl-fme-perf.c b/drivers/fpga/dfl-fme-perf.c
index 7422d2bc6f37..db56d52411ef 100644
--- a/drivers/fpga/dfl-fme-perf.c
+++ b/drivers/fpga/dfl-fme-perf.c
@@ -925,6 +925,8 @@ static int fme_perf_pmu_register(struct platform_device *pdev,
PERF_PMU_CAP_NO_EXCLUDE;
name = devm_kasprintf(priv->dev, GFP_KERNEL, "dfl_fme%d", pdev->id);
+ if (!name)
+ return -ENOMEM;
ret = perf_pmu_register(pmu, name, -1);
if (ret)
--
2.31.1
