[PATCH] soc: aspeed: Add check devm_kasprintf() returned value
Charles Han
hanchunchao at inspur.com
Sun Sep 29 11:25:03 AEST 2024
devm_kasprintf() can return a NULL pointer on failure in
aspeed_lpc_enable_snoop() but this returned value is not checked.
Fixes: 3772e5da4454 ("drivers/misc: Aspeed LPC snoop output using misc chardev")
Signed-off-by: Charles Han <hanchunchao at inspur.com>
---
drivers/soc/aspeed/aspeed-lpc-snoop.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/soc/aspeed/aspeed-lpc-snoop.c b/drivers/soc/aspeed/aspeed-lpc-snoop.c
index 888b5840c015..68317b2e44b5 100644
--- a/drivers/soc/aspeed/aspeed-lpc-snoop.c
+++ b/drivers/soc/aspeed/aspeed-lpc-snoop.c
@@ -200,6 +200,9 @@ static int aspeed_lpc_enable_snoop(struct aspeed_lpc_snoop *lpc_snoop,
lpc_snoop->chan[channel].miscdev.minor = MISC_DYNAMIC_MINOR;
lpc_snoop->chan[channel].miscdev.name =
devm_kasprintf(dev, GFP_KERNEL, "%s%d", DEVICE_NAME, channel);
+ if (!lpc_snoop->chan[channel].miscdev.name)
+ return -ENOMEM;
+
lpc_snoop->chan[channel].miscdev.fops = &snoop_fops;
lpc_snoop->chan[channel].miscdev.parent = dev;
rc = misc_register(&lpc_snoop->chan[channel].miscdev);
--
2.31.1
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