udf: refactor inode_bmap() to handle error

Vulnerability Description

In the Linux kernel, the following vulnerability has been resolved: udf: refactor inode_bmap() to handle error Refactor inode_bmap() to handle error since udf_next_aext() can return error now. On situations like ftruncate, udf_extend_file() can now detect errors and bail out early without resorting to checking for particular offsets and assuming internal behavior of these functions.

References

• https://git.kernel.org/stable/c/493447dd8336607fce426f7879e581095f6c606e
• https://git.kernel.org/stable/c/b22d9a5698abf04341f8fbc30141e0673863c3a6
• https://git.kernel.org/stable/c/c226964ec786f3797ed389a16392ce4357697d24