drm/nouveau/secboot/acr: Remove VLA usage

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In the quest to remove all stack VLA usage from the kernel[1], this
allocates the working buffers before starting the writing so it won't
abort in the middle. This needs an initial walk of the lists to figure
out how large the buffer should be.

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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This commit is contained in:

Kees Cook 2018-05-24 10:24:36 -07:00 • committed by Ben Skeggs

parent 94a0b8634f

commit 0d46690155

2 changed files with 37 additions and 4 deletions

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25

drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r352.c

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16

drivers/gpu/drm/nouveau/nvkm/subdev/secboot/acr_r367.c

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