Commits
71c29bd5c235 ("IB/uverbs: Add devnode method to set path/mode")
and
c3af0980ce01 ("IB: Add devnode methods to cm_class and umad_class")
added devnode methods that set the mode.
However, these methods don't check for a NULL mode, and so we get a
crash when unloading modules because devtmpfs_delete_node() calls
device_get_devnode() with mode == NULL.
Add the missing checks.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de>
[ Also fix cm.c. - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
static char *cm_devnode(struct device *dev, mode_t *mode)
{
- *mode = 0666;
+ if (mode)
+ *mode = 0666;
return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev));
}
static char *uverbs_devnode(struct device *dev, mode_t *mode)
{
- *mode = 0666;
+ if (mode)
+ *mode = 0666;
return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev));
}