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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-24 18:55:12 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-24 18:55:12 +0300 |
| commit | df5011000496355d8508d56cd3ce45b1196b8b43 (patch) | |
| tree | e8b469c9425664a69775ff1eff2a011747e38013 | |
| parent | c0e457851fffd90eac14ad2528dfea3994945c28 (diff) | |
| parent | 7f049fbdd57f6ea71dc741d903c19c73b2f70950 (diff) | |
| download | linux-df5011000496355d8508d56cd3ce45b1196b8b43.tar.xz | |
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
| -rw-r--r-- | arch/x86/events/intel/lbr.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c index 4409d2cccfda..e8453de7a964 100644 --- a/arch/x86/events/intel/lbr.c +++ b/arch/x86/events/intel/lbr.c @@ -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)); } } |