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devres: Introduce devm_kmemdup_array()

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[ Upstream commit a103b833ac3806b816bc993cba77d0b17cf801f1 ]

Introduce '_array' variant of devm_kmemdup() which is more robust and
consistent with alloc family of helpers.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Raag Jadav <raag.jadav@intel.com>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Stable-dep-of: 7dd7f39fce00 ("ASoC: SOF: Intel: hda: Fix UAF when reloading module")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Raag Jadav
2025-02-12 11:55:05 +05:30
committed by Greg Kroah-Hartman
parent 7207effe47
commit 4a39fbffad
1 changed files with 5 additions and 0 deletions
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5
include/linux/device/devres.h
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@@ -79,6 +79,11 @@ void devm_kfree(struct device *dev, const void *p);
void * __realloc_size(3)
devm_kmemdup(struct device *dev, const void *src, size_t len, gfp_t gfp);
static inline void *devm_kmemdup_array(struct device *dev, const void *src,
size_t n, size_t size, gfp_t flags)
{
return devm_kmemdup(dev, src, size_mul(size, n), flags);
}
char * __malloc
devm_kstrdup(struct device *dev, const char *s, gfp_t gfp);