tree 2a6ba19073820f116050b1730f3e08f97187ddb2
parent 2b879eaf095878430c38cbd95e5c0fc4ce65ad8e
author Thomas Gleixner <tglx@linutronix.de> 1297065905 +0100
committer Thomas Gleixner <tglx@linutronix.de> 1298116688 +0100

genirq: Plug race in report_bad_irq()

We cannot walk the action chain unlocked. Even if IRQ_INPROGRESS is
set an action can be removed and we follow a null pointer. It's safe
to take the lock there, because the code which removes the action will
call synchronize_irq() which waits unlocked for IRQ_INPROGRESS going
away.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>