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(parent: 1001354) | patch
hwrng: core - Don't use a stack buffer in add_early_randomness()
authorAndrew Lutomirski <luto@kernel.org>
Mon, 17 Oct 2016 17:06:27 +0000 (10:06 -0700)
committerHerbert Xu <herbert@gondor.apana.org.au>
Wed, 19 Oct 2016 03:20:21 +0000 (11:20 +0800)
commit6d4952d9d9d4dc2bb9c0255d95a09405a1e958f7
treede7c243da39513abf015bca7993dff3245467729tree | snapshot
parent1001354ca34179f3db924eb66672442a173147dccommit | diff
hwrng: core - Don't use a stack buffer in add_early_randomness()

hw_random carefully avoids using a stack buffer except in
add_early_randomness().  This causes a crash in virtio_rng if
CONFIG_VMAP_STACK=y.

Reported-by: Matt Mullins <mmullins@mmlx.us>
Tested-by: Matt Mullins <mmullins@mmlx.us>
Fixes: d3cc7996473a ("hwrng: fetch randomness only after device init")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
drivers/char/hw_random/core.c diff | blob | history
Domain: System / Kernel;