This is a note to let you know that I've just added the patch titled
MIPS: OCTEON: irq: Check for null return on kzalloc allocation
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: mips-octeon-irq-check-for-null-return-on-kzalloc-allocation.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From 902f4d067a50ccf645a58dd5fb1d113b6e0f9b5b Mon Sep 17 00:00:00 2001
From: Colin Ian King colin.king@canonical.com Date: Thu, 22 Feb 2018 18:08:53 +0000 Subject: MIPS: OCTEON: irq: Check for null return on kzalloc allocation
From: Colin Ian King colin.king@canonical.com
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@canonical.com Acked-by: David Daney david.daney@cavium.com Cc: Ralf Baechle ralf@linux-mips.org Cc: "Steven J. Hill" Steven.Hill@cavium.com Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org # 4.0+ Patchwork: https://patchwork.linux-mips.org/patch/18658/ Signed-off-by: James Hogan jhogan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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);
Patches currently in stable-queue which might be from colin.king@canonical.com are
queue-4.9/mips-ath25-check-for-kzalloc-allocation-failure.patch queue-4.9/mips-octeon-irq-check-for-null-return-on-kzalloc-allocation.patch