Description
In the Linux kernel, the following vulnerability has been resolved: sched_ext: Fix possible deadlock in the deferred_irq_workfn() For PREEMPT_RT=y kernels, the deferred_irq_workfn() is executed in the per-cpu irq_work/* task context and not disable-irq, if the rq returned by container_of() is current CPU's rq, the following scenarios may occur: lock(&rq->__lock); <Interrupt> lock(&rq->__lock); This commit use IRQ_WORK_INIT_HARD() to replace init_irq_work() to initialize rq->scx.deferred_irq_work, make the deferred_irq_workfn() is always invoked in hard-irq context.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
5b26f7b920f76b2b9cc398c252a9e35e44bf5bb9 to < 541959b2fadb832a7d0ceb95041dc52bdcf6bff7affected5b26f7b920f76b2b9cc398c252a9e35e44bf5bb9 to < 600b4379b9a7ba41340d652211fb29699da4c629affected5b26f7b920f76b2b9cc398c252a9e35e44bf5bb9 to < a257e974210320ede524f340ffe16bf4bf0dda1eaffected
Linux Linux
Default version status: affected
6.12affected0 to < 6.12unaffected6.12.68 to ≤ 6.12.*unaffected6.17.12 to ≤ 6.17.*unaffected6.18 to ≤ *unaffected