In the Linux kernel, the following vulnerability has been resolved: btrfs: handle errors from btrfs_dec_ref() properly In walk_up_proc() we BUG_ON(ret) from btrfs_dec_ref(). This is incorrect, we have proper error handling here, return the error.
https://git.kernel.org/stable/c/a7f16a7a709845855cb5a0e080a52bda5873f9de
https://git.kernel.org/stable/c/5eb178f373b4f16f3b42d55ff88fc94dd95b93b1