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media: st-hva: Fix potential NULL pointer dereferences
[ Upstream commit b7fdd20868
]
When ctx_id >= HVA_MAX_INSTANCES in hva_hw_its_irq_thread() it tries to
access fields of ctx that is NULL at that point. The patch gets rid of
these accesses.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Evgeny Novikov <novikov@ispras.ru>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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parent
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1 changed files with 1 additions and 2 deletions
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@ -130,8 +130,7 @@ static irqreturn_t hva_hw_its_irq_thread(int irq, void *arg)
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ctx_id = (hva->sts_reg & 0xFF00) >> 8;
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if (ctx_id >= HVA_MAX_INSTANCES) {
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dev_err(dev, "%s %s: bad context identifier: %d\n",
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ctx->name, __func__, ctx_id);
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ctx->hw_err = true;
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HVA_PREFIX, __func__, ctx_id);
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goto out;
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}
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