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authorOleg Nesterov <oleg@redhat.com>2011-01-18 17:10:32 +0100
committerIngo Molnar <mingo@elte.hu>2011-01-18 19:34:23 +0100
commit66832eb4baaaa9abe4c993ddf9113a79e39b9915 (patch)
treebc1b60069c5313231a5ddca0f0dcab953489bb1e /kernel/extable.c
parent22a4ec729017ba613337a28f306f94ba5023fe2e (diff)
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perf: Validate cpu early in perf_event_alloc()
Starting from perf_event_alloc()->perf_init_event(), the kernel assumes that event->cpu is either -1 or the valid CPU number. Change perf_event_alloc() to validate this argument early. This also means we can remove the similar check in find_get_context(). Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Prasad <prasad@linux.vnet.ibm.com> Cc: Roland McGrath <roland@redhat.com> Cc: gregkh@suse.de Cc: stable@kernel.org LKML-Reference: <20110118161032.GC693@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/extable.c')
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