Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.14 15/25] media: st-hva: Fix potential NULL pointer dereferences | Date | Sun, 4 Jul 2021 19:11:13 -0400 |
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From: Evgeny Novikov <novikov@ispras.ru>
[ Upstream commit b7fdd208687ba59ebfb09b2199596471c63b69e3 ]
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> --- drivers/media/platform/sti/hva/hva-hw.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/media/platform/sti/hva/hva-hw.c b/drivers/media/platform/sti/hva/hva-hw.c index 1185f6b6721e..3bb4d55c2058 100644 --- a/drivers/media/platform/sti/hva/hva-hw.c +++ b/drivers/media/platform/sti/hva/hva-hw.c @@ -130,8 +130,7 @@ static irqreturn_t hva_hw_its_irq_thread(int irq, void *arg) ctx_id = (hva->sts_reg & 0xFF00) >> 8; if (ctx_id >= HVA_MAX_INSTANCES) { dev_err(dev, "%s %s: bad context identifier: %d\n", - ctx->name, __func__, ctx_id); - ctx->hw_err = true; + HVA_PREFIX, __func__, ctx_id); goto out; } -- 2.30.2
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