Zhou Qingyang 408ab78ca1 drm/nouveau/acr: Fix undefined behavior in nvkm_acr_hsfw_load_bl()
[ Upstream commit 2343bcdb47 ]

In nvkm_acr_hsfw_load_bl(), the return value of kmalloc() is directly
passed to memcpy(), which could lead to undefined behavior on failure
of kmalloc().

Fix this bug by using kmemdup() instead of kmalloc()+memcpy().

This bug was found by a static analyzer.

Builds with 'make allyesconfig' show no new warnings,
and our static analyzer no longer warns about this code.

Fixes: 22dcda45a3 ("drm/nouveau/acr: implement new subdev to replace "secure boot"")
Signed-off-by: Zhou Qingyang <zhou1615@umn.edu>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220124165856.57022-1-zhou1615@umn.edu
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-08 14:23:25 +02:00
2022-04-08 14:23:00 +02:00
2022-03-28 09:58:46 +02:00

Linux kernel
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There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
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