From f0623340fd2cab724e3c54ac026d1414325f375d Mon Sep 17 00:00:00 2001 From: Peter Lafreniere Date: Thu, 16 Jun 2022 11:23:33 -0400 Subject: [PATCH] ax25: use GFP_KERNEL in ax25_dev_device_up() ax25_dev_device_up() is only called during device setup, which is done in user context. In addition, ax25_dev_device_up() unconditionally calls ax25_register_dev_sysctl(), which already allocates with GFP_KERNEL. Since it is allowed to sleep in this function, here we change ax25_dev_device_up() to use GFP_KERNEL to reduce unnecessary out-of-memory errors. Reported-by: Dan Carpenter Signed-off-by: Peter Lafreniere Link: https://lore.kernel.org/r/20220616152333.9812-1-pjlafren@mtu.edu Signed-off-by: Jakub Kicinski --- net/ax25/ax25_dev.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/ax25/ax25_dev.c b/net/ax25/ax25_dev.c index ab88b6ac5401..c5462486dbca 100644 --- a/net/ax25/ax25_dev.c +++ b/net/ax25/ax25_dev.c @@ -52,7 +52,8 @@ void ax25_dev_device_up(struct net_device *dev) { ax25_dev *ax25_dev; - if ((ax25_dev = kzalloc(sizeof(*ax25_dev), GFP_ATOMIC)) == NULL) { + ax25_dev = kzalloc(sizeof(*ax25_dev), GFP_KERNEL); + if (!ax25_dev) { printk(KERN_ERR "AX.25: ax25_dev_device_up - out of memory\n"); return; } @@ -60,7 +61,7 @@ void ax25_dev_device_up(struct net_device *dev) refcount_set(&ax25_dev->refcount, 1); dev->ax25_ptr = ax25_dev; ax25_dev->dev = dev; - netdev_hold(dev, &ax25_dev->dev_tracker, GFP_ATOMIC); + netdev_hold(dev, &ax25_dev->dev_tracker, GFP_KERNEL); ax25_dev->forward = NULL; ax25_dev->device_up = true;