CVE-2025-40142 ALSA: pcm: Disable bottom softirqs as part of spin_lock_irq() on PREEMPT_RT

In the Linux kernel, the following vulnerability has been resolved: ALSA: pcm: Disable bottom softirqs as part of spinlockirq on PREEMPTRT sndpcmgrouplockirq acquires a spinlockt and disables interrupts via spinlockirq. This also implicitly disables the handling of softirqs such as TIMERSOFTIRQ. ...