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With CONFIG_DEBUG_SHIRQ set we will get an interrupt as soon as we allocate one. Tasklets may be scheduled in the interrupt handler but they will be initialized after the handler returns, causing a BUG() in kernel/softirq.c when they run. Should fix this Fedora bug report: https://bugzilla.redhat.com/show_bug.cgi?id=449817 Signed-off-by: Chuck Ebbert <cebbert@redhat.com> Acked-by: Pierre Ossman <drzeus@drzeus.cx> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>