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MIPS: OCTEON: irq: Fix potential NULL pointer dereference

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commit 792a402c28 upstream.

There is a potential NULL pointer dereference in case kzalloc()
fails and returns NULL.

Fix this by adding a NULL check on *cd*

This bug was detected with the help of Coccinelle.

Fixes: 64b139f97c ("MIPS: OCTEON: irq: add CIB and other fixes")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gustavo A. R. Silva
2019-01-22 14:18:42 -06:00
committed by Greg Kroah-Hartman
parent dd8faa3ad5
commit 60fa37e535
1 changed files with 3 additions and 0 deletions
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3
arch/mips/cavium-octeon/octeon-irq.c
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@@ -2199,6 +2199,9 @@ static int octeon_irq_cib_map(struct irq_domain *d,
}
cd = kzalloc(sizeof(*cd), GFP_KERNEL);
if (!cd)
return -ENOMEM;
cd->host_data = host_data;
cd->bit = hw;