Commit df501100 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'perf-urgent-2021-06-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 

Pull x86 perf fix from Ingo Molnar:
 "An LBR buffer fix for code that probably only worked accidentally"

* tag 'perf-urgent-2021-06-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/lbr: Zero the xstate buffer on allocation
parents c0e45785 7f049fbd

arch/x86/events/intel/lbr.c

+2 −1
Original line number Diff line number Diff line
@@ -731,7 +731,8 @@ void reserve_lbr_buffers(void) 
		if (!kmem_cache || cpuc->lbr_xsave)

			continue;



		cpuc->lbr_xsave = kmem_cache_alloc_node(kmem_cache, GFP_KERNEL,

		cpuc->lbr_xsave = kmem_cache_alloc_node(kmem_cache,

							GFP_KERNEL | __GFP_ZERO,

							cpu_to_node(cpu));

	}

}