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authorKees Cook <keescook@chromium.org>2018-05-08 16:08:53 -0700
committerKees Cook <keescook@chromium.org>2018-06-06 11:15:43 -0700
commit0ed2dd03b94b7b7f66e23f25073b5385d0416589 (patch)
tree5b46cbc179ffcdaf40715d53b8308f5a937b5c40 /drivers/misc/cb710
parentb4b06db115bbbc10252287ae2d326fb5ecefaf18 (diff)
download96b-common-0ed2dd03b94b7b7f66e23f25073b5385d0416589.tar.gz
treewide: Use struct_size() for devm_kmalloc() and friends
Replaces open-coded struct size calculations with struct_size() for devm_*, f2fs_*, and sock_* allocations. Automatically generated (and manually adjusted) from the following Coccinelle script: // Direct reference to struct field. @@ identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc"; expression HANDLE; expression GFP; identifier VAR, ELEMENT; expression COUNT; @@ - alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(*VAR->ELEMENT), GFP) + alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP) // mr = kzalloc(sizeof(*mr) + m * sizeof(mr->map[0]), GFP_KERNEL); @@ identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc"; expression HANDLE; expression GFP; identifier VAR, ELEMENT; expression COUNT; @@ - alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(VAR->ELEMENT[0]), GFP) + alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP) // Same pattern, but can't trivially locate the trailing element name, // or variable name. @@ identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc"; expression HANDLE; expression GFP; expression SOMETHING, COUNT, ELEMENT; @@ - alloc(HANDLE, sizeof(SOMETHING) + COUNT * sizeof(ELEMENT), GFP) + alloc(HANDLE, CHECKME_struct_size(&SOMETHING, ELEMENT, COUNT), GFP) Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'drivers/misc/cb710')
-rw-r--r--drivers/misc/cb710/core.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/misc/cb710/core.c b/drivers/misc/cb710/core.c
index fb397e7d1cce..4d4acf763b65 100644
--- a/drivers/misc/cb710/core.c
+++ b/drivers/misc/cb710/core.c
@@ -232,8 +232,8 @@ static int cb710_probe(struct pci_dev *pdev,
if (val & CB710_SLOT_SM)
++n;
- chip = devm_kzalloc(&pdev->dev,
- sizeof(*chip) + n * sizeof(*chip->slot), GFP_KERNEL);
+ chip = devm_kzalloc(&pdev->dev, struct_size(chip, slot, n),
+ GFP_KERNEL);
if (!chip)
return -ENOMEM;