workqueue: Use raise_softirq() to trigger softirq in irq_work handler

bh_pool_kick_normal() and bh_pool_kick_highpri() are registered via
init_irq_work() without the IRQ_WORK_HARD_IRQ flag. On PREEMPT_RT, such
irq_work items are processed by the per-CPU irq_workd kthread in preemptible
task context with IRQs enabled. However, raise_softirq_irqoff() requires
IRQs to be disabled. Calling it from irq_workd trips the lockdep assertion
in __raise_softirq_irqoff() and the non-atomic update of the softirq pending
mask can lose bits raised by an interrupt on the same CPU. Replace
raise_softirq_irqoff() with raise_softirq() in the irq_work handlers.

Fixes: 2f34d7337d98 ("workqueue: Fix queue_work_on() with BH workqueues")
Cc: stable@vger.kernel.org # v6.9+
Signed-off-by: Zqiang <qiang.zhang@linux.dev>
Signed-off-by: Tejun Heo <tj@kernel.org>

0 files changed, 0 insertions, 0 deletions