[PATCH 4.9 19/86] MIPS: OCTEON: irq: Check for null return on kzalloc allocation

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

--

From: Colin Ian King 

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 
Acked-by: David Daney 
Cc: Ralf Baechle 
Cc: "Steven J. Hill" 
Cc: linux-m...@linux-mips.org
Cc:  # 4.0+
Patchwork: https://patchwork.linux-mips.org/patch/18658/
Signed-off-by: James Hogan 
Signed-off-by: Greg Kroah-Hartman 

---
 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(_data->lock);
 
addr = of_get_address(ciu_node, 0, NULL, NULL);

[PATCH 4.9 19/86] MIPS: OCTEON: irq: Check for null return on kzalloc allocation

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

--

From: Colin Ian King 

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 
Acked-by: David Daney 
Cc: Ralf Baechle 
Cc: "Steven J. Hill" 
Cc: linux-m...@linux-mips.org
Cc:  # 4.0+
Patchwork: https://patchwork.linux-mips.org/patch/18658/
Signed-off-by: James Hogan 
Signed-off-by: Greg Kroah-Hartman 

---
 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(_data->lock);
 
addr = of_get_address(ciu_node, 0, NULL, NULL);