summaryrefslogtreecommitdiff
path: root/include/linux/device.h
diff options
context:
space:
mode:
authorKees Cook <keescook@chromium.org>2022-10-29 00:47:34 -0700
committerKees Cook <keescook@chromium.org>2022-11-18 09:17:13 -0800
commit74c8e6bffbe10c4470139496f930c0b0752c85c9 (patch)
treef6f815615a576b96eed8d849340db29664c24684 /include/linux/device.h
parent8abfff25b3e2c8f51049295f86dd257492ac1969 (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 <gregkh@linuxfoundation.org> Cc: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Nishanth Menon <nm@ti.com> Cc: Michael Kelley <mikelley@microsoft.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Won Chung <wonchung@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20221029074734.gonna.276-kees@kernel.org
Diffstat (limited to 'include/linux/device.h')
-rw-r--r--include/linux/device.h7
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);