CVE-2022-48802 fs/proc: task_mmu.c: don't read mapcount for migration entry

In the Linux kernel, the following vulnerability has been resolved: fs/proc: taskmmu.c: don't read mapcount for migration entry The syzbot reported the below BUG: kernel BUG at include/linux/page-flags.h:785! invalid opcode: 0000 1 PREEMPT SMP KASAN CPU: 1 PID: 4392 Comm: syz-executor560 Not...