[PATCH 0/3] perf: Support multiple stacks (v2)

[Arun Sharma]

If userspace has two or more stacks and we happen to take a sample when
the stack pointer is pointing to a higher stack, we might get truncated
callchains. This patch series tries to address that.

Changelog:

v2: do this for compat32 as well
v2: improve safety checks and reduce max callchain size

Arun Sharma (3):
  perf, x86: Allow multiple stacks
  perf, x86: Don't leak kernel data via callchains
  perf, x86: Limit callchains to 127

 arch/x86/kernel/cpu/perf_event.c |   14 +++++++-------
 include/linux/perf_event.h       |    2 +-
 2 files changed, 8 insertions(+), 8 deletions(-)

-- 
1.7.8.4

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