Hello there,
I just ran the sourceforge tool cppcheck over the source code of the
new Linux kernel 2.6.32.4
It said
1.
[./btrfs/free-space-cache.c:600]: (style) Redundant condition. It is safe to deallocate a NULL pointer
The source code is
if (info->bitmap)
kfree(info->bitmap);
I agree with cppcheck. Suggest delete the if test.
2.
[./btrfs/free-space-cache.c:906]: (style) Redundant condition. It is safe to deallocate a NULL pointer
Duplicate.
3.
[./btrfs/relocation.c:3278]: (error) Memory leak: cluster
The source code is
cluster = kzalloc(sizeof(*cluster), GFP_NOFS);
if (!cluster)
return -ENOMEM;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
Suggest new code
cluster = kzalloc(sizeof(*cluster), GFP_NOFS);
if (!cluster)
return -ENOMEM;
path = btrfs_alloc_path();
if (!path)
{
kfree( cluster);
return -ENOMEM;
}
4.
[./btrfs/volumes.c:1257]: (error) Possible null pointer dereference: fs_devices
The source code is
while (fs_devices) {
if (fs_devices->seed == device->fs_devices)
break;
fs_devices = fs_devices->seed;
}
fs_devices->seed = device->fs_devices->seed;
So presumably fs_devices can never be NULL i.e. the while loop will
always find what it is looking for and so no code to test for NULL is
required.
Regards
David Binderman
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