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| author | Chenyuan Yang <[email protected]> | 2025-03-11 01:05:11 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2025-04-15 14:13:55 +0000 |
| commit | a99b598d836c9c6411110c70a2da134c78d96e67 (patch) | |
| tree | 303ec1dc3e252c75ab122a9be05ae28e1bdbbeb6 | |
| parent | misc: fastrpc: Add meaningful labels for exit paths (diff) | |
| download | kernel-a99b598d836c9c6411110c70a2da134c78d96e67.tar.gz kernel-a99b598d836c9c6411110c70a2da134c78d96e67.zip | |
misc: tps6594-pfsm: Add NULL pointer check in tps6594_pfsm_probe()
The returned value, pfsm->miscdev.name, from devm_kasprintf()
could be NULL.
A pointer check is added to prevent potential NULL pointer dereference.
This is similar to the fix in commit 3027e7b15b02
("ice: Fix some null pointer dereference issues in ice_ptp.c").
This issue is found by our static analysis tool.
Signed-off-by: Chenyuan Yang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
| -rw-r--r-- | drivers/misc/tps6594-pfsm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/misc/tps6594-pfsm.c b/drivers/misc/tps6594-pfsm.c index 0a24ce44cc37..6db1c9d48f8f 100644 --- a/drivers/misc/tps6594-pfsm.c +++ b/drivers/misc/tps6594-pfsm.c @@ -281,6 +281,9 @@ static int tps6594_pfsm_probe(struct platform_device *pdev) pfsm->miscdev.minor = MISC_DYNAMIC_MINOR; pfsm->miscdev.name = devm_kasprintf(dev, GFP_KERNEL, "pfsm-%ld-0x%02x", tps->chip_id, tps->reg); + if (!pfsm->miscdev.name) + return -ENOMEM; + pfsm->miscdev.fops = &tps6594_pfsm_fops; pfsm->miscdev.parent = dev->parent; pfsm->chip_id = tps->chip_id; |