Messages in this thread | | | From | Arun Sharma <> | Subject | [PATCH 0/3] perf: Support multiple stacks (v2) | Date | Fri, 20 Apr 2012 12:35:24 -0700 |
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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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