4.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
commit 902f4d067a50ccf645a58dd5fb1d113b6e0f9b5b upstream.
The allocation of host_data is not null checked, leading to a null
pointer dereference if the allocation fails. Fix this by adding a null
check and return with -ENOMEM.
Fixes: 64b139f97c01 ("MIPS: OCTEON: irq: add CIB and other fixes")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Acked-by: David Daney <david.daney@xxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: "Steven J. Hill" <Steven.Hill@xxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: <stable@xxxxxxxxxxxxxxx> # 4.0+
Patchwork: https://patchwork.linux-mips.org/patch/18658/
Signed-off-by: James Hogan <jhogan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/mips/cavium-octeon/octeon-irq.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/mips/cavium-octeon/octeon-irq.c
+++ b/arch/mips/cavium-octeon/octeon-irq.c
@@ -2277,6 +2277,8 @@ static int __init octeon_irq_init_cib(st
}
host_data = kzalloc(sizeof(*host_data), GFP_KERNEL);
+ if (!host_data)
+ return -ENOMEM;
raw_spin_lock_init(&host_data->lock);
addr = of_get_address(ciu_node, 0, NULL, NULL);