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linux/random.h: Mark CONFIG_ARCH_RANDOM functions __must_check

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commit 904caa6413c87aacbf7d0682da617c39ca18cf1a upstream.

We must not use the pointer output without validating the
success of the random read.

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20200110145422.49141-7-broonie@kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Richard Henderson 2020-01-10 14:54:18 +00:00 committed by Greg Kroah-Hartman
parent 2295356d23
commit 78b28324aa
1 changed files with 4 additions and 4 deletions
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8
include/linux/random.h
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@ -96,19 +96,19 @@ unsigned long randomize_page(unsigned long start, unsigned long range);
#ifdef CONFIG_ARCH_RANDOM
# include <asm/archrandom.h>
#else
static inline bool arch_get_random_long(unsigned long *v)
static inline bool __must_check arch_get_random_long(unsigned long *v)
{
return false;
}
static inline bool arch_get_random_int(unsigned int *v)
static inline bool __must_check arch_get_random_int(unsigned int *v)
{
return false;
}
static inline bool arch_get_random_seed_long(unsigned long *v)
static inline bool __must_check arch_get_random_seed_long(unsigned long *v)
{
return false;
}
static inline bool arch_get_random_seed_int(unsigned int *v)
static inline bool __must_check arch_get_random_seed_int(unsigned int *v)
{
return false;
}