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authorEd Swierk <eswierk@aristanetworks.com>2009-01-26 15:33:31 -0800
committerIngo Molnar <mingo@elte.hu>2009-01-27 00:36:19 +0100
commit3a9f84d354ce1e19956083c8e691727dea33bd5a (patch)
treeabe8c280d3adb7a8e5fc838c59b122a46e6fd464 /lib
parentbf50c903faba4ec7686ee8a570ac384b0f20814d (diff)
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signals, debug: fix BUG: using smp_processor_id() in preemptible code in print_fatal_signal()
With print-fatal-signals=1 on a kernel with CONFIG_PREEMPT=y, sending an unexpected signal to a process causes a BUG: using smp_processor_id() in preemptible code. get_signal_to_deliver() releases the siglock before calling print_fatal_signal(), which calls show_regs(), which calls smp_processor_id(), which is not supposed to be called from a preemptible thread. Make sure show_regs() runs with preemption disabled. Signed-off-by: Ed Swierk <eswierk@aristanetworks.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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