This is a note to let you know that I've just added the patch titled
net/mlxfw: Fix out-of-memory error in mfa2 flash burning
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-mlxfw-fix-out-of-memory-error-in-mfa2-flash-burning.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu 02 Jan 2020 11:13:41 AM CET
From: Vladyslav Tarasiuk <vladyslavt@xxxxxxxxxxxx>
Date: Thu, 26 Dec 2019 10:41:56 +0200
Subject: net/mlxfw: Fix out-of-memory error in mfa2 flash burning
From: Vladyslav Tarasiuk <vladyslavt@xxxxxxxxxxxx>
[ Upstream commit a5bcd72e054aabb93ddc51ed8cde36a5bfc50271 ]
The burning process requires to perform internal allocations of large
chunks of memory. This memory doesn't need to be contiguous and can be
safely allocated by vzalloc() instead of kzalloc(). This patch changes
such allocation to avoid possible out-of-memory failure.
Fixes: 410ed13cae39 ("Add the mlxfw module for Mellanox firmware flash process")
Signed-off-by: Vladyslav Tarasiuk <vladyslavt@xxxxxxxxxxxx>
Reviewed-by: Aya Levin <ayal@xxxxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Tested-by: Ido Schimmel <idosch@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.c
+++ b/drivers/net/ethernet/mellanox/mlxfw/mlxfw_mfa2.c
@@ -37,6 +37,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netlink.h>
+#include <linux/vmalloc.h>
#include <linux/xz.h>
#include "mlxfw_mfa2.h"
#include "mlxfw_mfa2_file.h"
@@ -579,7 +580,7 @@ mlxfw_mfa2_file_component_get(const stru
comp_size = be32_to_cpu(comp->size);
comp_buf_size = comp_size + mlxfw_mfa2_comp_magic_len;
- comp_data = kmalloc(sizeof(*comp_data) + comp_buf_size, GFP_KERNEL);
+ comp_data = vzalloc(sizeof(*comp_data) + comp_buf_size);
if (!comp_data)
return ERR_PTR(-ENOMEM);
comp_data->comp.data_size = comp_size;
@@ -601,7 +602,7 @@ mlxfw_mfa2_file_component_get(const stru
comp_data->comp.data = comp_data->buff + mlxfw_mfa2_comp_magic_len;
return &comp_data->comp;
err_out:
- kfree(comp_data);
+ vfree(comp_data);
return ERR_PTR(err);
}
@@ -610,7 +611,7 @@ void mlxfw_mfa2_file_component_put(struc
const struct mlxfw_mfa2_comp_data *comp_data;
comp_data = container_of(comp, struct mlxfw_mfa2_comp_data, comp);
- kfree(comp_data);
+ vfree(comp_data);
}
void mlxfw_mfa2_file_fini(struct mlxfw_mfa2_file *mfa2_file)
Patches currently in stable-queue which might be from vladyslavt@xxxxxxxxxxxx are
queue-4.14/net-mlxfw-fix-out-of-memory-error-in-mfa2-flash-burning.patch
