In the Linux kernel, the following vulnerability has been resolved: riscv: save the SR_SUM status over switches When threads/tasks are switched we need to ensure the old execution's SR_SUM state is…

摘要

In the Linux kernel, the following vulnerability has been resolved: riscv: save the SR_SUM status over switches When threads/tasks are switched we need to ensure the old execution's SR_SUM state is saved and the new thread has the old SR_SUM state restored. The issue was seen under heavy load especially with the syz-stress tool running, with crashes as follows in schedule_tail: Unable to handle kernel access to user memory without uaccess routines at virtual address 000000002749f0d0 Oops [#…

中文摘要建设中，暂以英文摘要呈现（DR-003 v2）。