CVE-2024-53130 nilfs2: fix null-ptr-deref in block_dirty_buffer tracepoint

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix null-ptr-deref in blockdirtybuffer tracepoint When using the "block:blockdirtybuffer" tracepoint, markbufferdirty may cause a NULL pointer dereference, or a general protection fault when KASAN is enabled. This happens...