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| author | Kees Cook <keescook@chromium.org> | 2018-05-08 16:08:53 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2018-06-06 11:15:43 -0700 |
| commit | 0ed2dd03b94b7b7f66e23f25073b5385d0416589 (patch) | |
| tree | 5b46cbc179ffcdaf40715d53b8308f5a937b5c40 /drivers/dma/nbpfaxi.c | |
| parent | b4b06db115bbbc10252287ae2d326fb5ecefaf18 (diff) | |
| download | linux-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/dma/nbpfaxi.c')
| -rw-r--r-- | drivers/dma/nbpfaxi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/dma/nbpfaxi.c b/drivers/dma/nbpfaxi.c index 50559338239b..2f9974ddfbb2 100644 --- a/drivers/dma/nbpfaxi.c +++ b/drivers/dma/nbpfaxi.c @@ -1305,8 +1305,8 @@ static int nbpf_probe(struct platform_device *pdev) cfg = of_device_get_match_data(dev); num_channels = cfg->num_channels; - nbpf = devm_kzalloc(dev, sizeof(*nbpf) + num_channels * - sizeof(nbpf->chan[0]), GFP_KERNEL); + nbpf = devm_kzalloc(dev, struct_size(nbpf, chan, num_channels), + GFP_KERNEL); if (!nbpf) return -ENOMEM; |