In the Linux kernel, the following vulnerability has been resolved: rcu: Fix __thiscpuread() lockdep warning in rcu_forcequiescentstate() Running rcutorture with non-zero fqsduration module parameter in a kernel built with CONFIGPREEMPTION=y results in the following splat: BUG: using __thiscpuread() in preemptible [00000000] code: rcutorturefqs/398 caller is __thiscpupreemptcheck+0x13/0x20 CPU: 3 PID: 398 Comm: rcutorturefqs Not tainted 6.0.0-rc1-yoctodev-standard+ Call Trace: <TASK> dumpstacklvl+0x5b/0x86 dumpstack+0x10/0x16 checkpreemptiondisabled+0xe5/0xf0 __thiscpupreempt_check+0x13/0x20 rcuforcequiescentstate.part.0+0x1c/0x170 rcuforcequiescentstate+0x1e/0x30 rcutorturefqs+0xca/0x160 ? rcutortureboost+0x430/0x430 kthread+0x192/0x1d0 ? kthreadcompleteandexit+0x30/0x30 retfromfork+0x22/0x30 </TASK> The problem is that rcuforcequiescentstate() uses __thiscpuread() in preemptible code instead of the proper rawcpuread(). This commit therefore changes __thiscpuread() to rawcpuread().