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(parent: 6ff6304) | patch
hwrng: core - use rng_fillbuf in add_early_randomness()
authorDominik Brodowski <linux@dominikbrodowski.net>
Mon, 24 Jan 2022 20:29:48 +0000 (21:29 +0100)
committerHerbert Xu <herbert@gondor.apana.org.au>
Sat, 5 Feb 2022 04:10:49 +0000 (15:10 +1100)
commitc05ac449442dd214e262057a3a49c368e224c384
tree47ec0f7861be150010f150d8ae0a276326551738tree | snapshot
parent6ff6304497c900a0284e3aa89ad86f0ed01f86d8commit | diff
hwrng: core - use rng_fillbuf in add_early_randomness()

Using rng_buffer in add_early_randomness() may race with rng_dev_read().
Use rng_fillbuf instead, as it is otherwise only used within the kernel
by hwrng_fillfn() and therefore never exposed to userspace.

Cc: Matt Mackall <mpm@selenic.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
drivers/char/hw_random/core.c diff | blob | history
Domain: System / Kernel;