CVE-2025-38203 jfs: Fix null-ptr-deref in jfs_ioc_trim

In the Linux kernel, the following vulnerability has been resolved: jfs: Fix null-ptr-deref in jfsioctrim Syzkaller Report Oops: general protection fault, probably for non-canonical address 0xdffffc0000000087: 0000 1 KASAN: null-ptr-deref in range 0x0000000000000438-0x000000000000043f CPU: 2 UID:...