In the Linux kernel, the following vulnerability has been resolved: ntb: intel: Fix the NULL vs IS_ERR() bug for debugfs_create_dir() The debugfs_create_dir() function returns error pointers. It never returns NULL. So use IS_ERR() to check it.
https://git.kernel.org/stable/c/ef7e34237e2612b116a84c9640628a6f7a0d693e
https://git.kernel.org/stable/c/e229897d373a87ee09ec5cc4ecd4bb2f895fc16b
https://git.kernel.org/stable/c/babba8595d1e5d57313a6187f3e51aceacc6881a
https://git.kernel.org/stable/c/b66bf833e72a1e23d7ccafc0f8f74e80f8c357b5
https://git.kernel.org/stable/c/a429158f2e0a7a03eb67fd5e204e1f6735c725aa
https://git.kernel.org/stable/c/7cbd6d7fb9ba2be03978809c848e2e50eaeead2c
https://git.kernel.org/stable/c/4b2fbba4e44630a59b09d32627b63c4ffdf70f78
https://git.kernel.org/stable/c/20cbc281033ef5324f67f2d54bc539968f937255
https://git.kernel.org/stable/c/16e5bed6c1883b19f9fcbdff996aa3381954d5f3