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devres: Use kmalloc_size_roundup() to match ksize() usage

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Round up allocations with kmalloc_size_roundup() so that devres's use
of ksize() is always accurate and no special handling of the memory is
needed by KASAN, UBSAN_BOUNDS, nor FORTIFY_SOURCE.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20221018090406.never.856-kees@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kees Cook 2022-10-18 02:04:10 -07:00 committed by Greg Kroah-Hartman
parent 9e6002ad9e
commit 6fcd7e702d
1 changed files with 3 additions and 0 deletions
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drivers/base/devres.c
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@ -101,6 +101,9 @@ static bool check_dr_size(size_t size, size_t *tot_size)
size, tot_size)))
return false;
/* Actually allocate the full kmalloc bucket size. */
*tot_size = kmalloc_size_roundup(*tot_size);
return true;
}