diff options
| author | Kees Cook <[email protected]> | 2022-10-29 00:47:34 -0700 |
|---|---|---|
| committer | Kees Cook <[email protected]> | 2022-11-18 09:17:13 -0800 |
| commit | 74c8e6bffbe10c4470139496f930c0b0752c85c9 (patch) | |
| tree | f6f815615a576b96eed8d849340db29664c24684 | |
| parent | 8abfff25b3e2c8f51049295f86dd257492ac1969 (diff) | |
driver core: Add __alloc_size hint to devm allocators
Mark the devm_*alloc()-family of allocations with appropriate
__alloc_size()/__realloc_size() hints so the compiler can attempt to
reason about buffer lengths from allocations.
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Rasmus Villemoes <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Nishanth Menon <[email protected]>
Cc: Michael Kelley <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Won Chung <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
| -rw-r--r-- | include/linux/device.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index 424b55df0272..5e4cd857e74f 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -197,9 +197,9 @@ void devres_remove_group(struct device *dev, void *id); int devres_release_group(struct device *dev, void *id); /* managed devm_k.alloc/kfree for device drivers */ -void *devm_kmalloc(struct device *dev, size_t size, gfp_t gfp) __malloc; +void *devm_kmalloc(struct device *dev, size_t size, gfp_t gfp) __alloc_size(2); void *devm_krealloc(struct device *dev, void *ptr, size_t size, - gfp_t gfp) __must_check; + gfp_t gfp) __must_check __realloc_size(3); __printf(3, 0) char *devm_kvasprintf(struct device *dev, gfp_t gfp, const char *fmt, va_list ap) __malloc; __printf(3, 4) char *devm_kasprintf(struct device *dev, gfp_t gfp, @@ -226,7 +226,8 @@ static inline void *devm_kcalloc(struct device *dev, void devm_kfree(struct device *dev, const void *p); char *devm_kstrdup(struct device *dev, const char *s, gfp_t gfp) __malloc; const char *devm_kstrdup_const(struct device *dev, const char *s, gfp_t gfp); -void *devm_kmemdup(struct device *dev, const void *src, size_t len, gfp_t gfp); +void *devm_kmemdup(struct device *dev, const void *src, size_t len, gfp_t gfp) + __realloc_size(3); unsigned long devm_get_free_pages(struct device *dev, gfp_t gfp_mask, unsigned int order); |