Alexander A. Klimov e0ce103e89 drm/vc4: fix krealloc() memory leak ...

[ Upstream commit 5d563a5da8 ]

Don't just overwrite the original pointer passed to krealloc()
with its return value without checking latter:

    MEM = krealloc(MEM, SZ, GFP);

If krealloc() returns NULL, that erases the pointer
to the still allocated memory, hence leaks this memory.
Instead, use a temporary variable, check it's not NULL
and only then assign it to the original pointer:

    TMP = krealloc(MEM, SZ, GFP);
    if (!TMP) return;
    MEM = TMP;

While on it, use krealloc_array().

Fixes: 6d45c81d22 ("drm/vc4: Add support for branching in shader validation.")
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Link: https://patch.msgid.link/20260606123817.37222-1-grandmaster@al2klimov.de
Signed-off-by: Sasha Levin <sashal@kernel.org>

2026-06-19 13:39:31 +02:00

..

drm

drm/vc4: fix krealloc() memory leak

2026-06-19 13:39:31 +02:00

host1x

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ipu-v3

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vga

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Makefile

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