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free_irq() can remove an irqaction while the corresponding interrupt is in progress, but free_irq() sets action->thread to NULL unconditionally, which might lead to a NULL pointer dereference in handle_IRQ_event() when the hard interrupt context tries to wake up the handler thread. Prevent this by moving the thread stop after synchronize_irq(). No need to set action->thread to NULL either as action is going to be freed anyway. This fixes a boot crash reported against preempt-rt which uses the mainline irq threads code to implement full irq threading. [ tglx: removed local irqthread variable ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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autoprobe.c | ||
chip.c | ||
devres.c | ||
handle.c | ||
internals.h | ||
Makefile | ||
manage.c | ||
migration.c | ||
numa_migrate.c | ||
pm.c | ||
proc.c | ||
resend.c | ||
spurious.c |