diff mbox series

[1/2] nfc: mei_phy: Return directly after a failed kzalloc() in mei_nfc_send()

Message ID 0a98d3b6-e0ec-408a-aa2d-f2b23dcff26f@web.de (mailing list archive)
State Rejected
Delegated to: Netdev Maintainers
Headers show
Series nfc: mei_phy: Adjustments for two function implementations | expand

Checks

Context Check Description
netdev/series_format warning Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1113 this patch: 1113
netdev/cc_maintainers success CCed 2 of 2 maintainers
netdev/build_clang success Errors and warnings before: 1140 this patch: 1140
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1140 this patch: 1140
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 11 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Markus Elfring Dec. 27, 2023, 4:02 p.m. UTC 
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 27 Dec 2023 16:30:20 +0100

The kfree() function was called in one case by
the mei_nfc_send() function during error handling
even if the passed variable contained a null pointer.
This issue was detected by using the Coccinelle software.

Thus return directly after a call of the function “kzalloc” failed
at the beginning.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/nfc/mei_phy.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--
2.43.0
diff mbox series

Patch

diff --git a/drivers/nfc/mei_phy.c b/drivers/nfc/mei_phy.c
index f9cca885beec..937f229f4646 100644
--- a/drivers/nfc/mei_phy.c
+++ b/drivers/nfc/mei_phy.c
@@ -208,10 +208,9 @@  static int mei_nfc_send(struct nfc_mei_phy *phy, const u8 *buf, size_t length)
 	u8 *mei_buf;
 	int err;

-	err = -ENOMEM;
 	mei_buf = kzalloc(length + MEI_NFC_HEADER_SIZE, GFP_KERNEL);
 	if (!mei_buf)
-		goto out;
+		return -ENOMEM;

 	hdr = (struct mei_nfc_hdr *)mei_buf;
 	hdr->cmd = MEI_NFC_CMD_HCI_SEND;