In the Linux kernel, the following vulnerability has been resolved:

riscv: kexec: Avoid deadlock in kexec crash path

If the kexec crash code is called in the interrupt context, the
machine_kexec_mask_interrupts() function will trigger a deadlock while
trying to acquire the irqdesc spinlock and then deactivate irqchip in
irq_set_irqchip_state() function.

Unlike arm64, riscv only requires irq_eoi handler to complete EOI and
keeping irq_set_irqchip_state() will only leave this possible deadlock
without any use. So we simply remove it.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-42140
• https://git.kernel.org/stable/c/484dd545271d02d1571e1c6b62ea7df9dbe5e692
• https://git.kernel.org/stable/c/653deee48a4682ea17a05b96fb6842795ab5943c
• https://git.kernel.org/stable/c/7692c9b6baacdee378435f58f19baf0eb69e4155
• https://git.kernel.org/stable/c/bb80a7911218bbab2a69b5db7d2545643ab0073d
• https://git.kernel.org/stable/c/c562ba719df570c986caf0941fea2449150bcbc4