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| author | Paul Mackerras <paulus@samba.org> | 2009-03-05 14:05:57 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2009-03-06 08:07:13 +1100 |
| commit | 86028598de16538f02519141756ccf4accfc29a6 (patch) | |
| tree | b2afaf03f578547bda536d0d99e87636e59216ea /arch/powerpc/kernel | |
| parent | b5e8acf66ff5db707c7e08df49fdf6b415878442 (diff) | |
| download | linux-86028598de16538f02519141756ccf4accfc29a6.tar.gz linux-86028598de16538f02519141756ccf4accfc29a6.tar.bz2 linux-86028598de16538f02519141756ccf4accfc29a6.zip | |
perfcounters/powerpc: fix oops with multiple counters in a group
Impact: fix oops-causing bug
This fixes a bug in the powerpc hw_perf_counter_init where the code
didn't initialize ctrs[n] before passing the ctrs array to check_excludes,
leading to possible oopses and other incorrect behaviour. This fixes it
by initializing ctrs[n] correctly.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/perf_counter.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/perf_counter.c b/arch/powerpc/kernel/perf_counter.c index 112332d07fc2..4fec112386fc 100644 --- a/arch/powerpc/kernel/perf_counter.c +++ b/arch/powerpc/kernel/perf_counter.c @@ -633,6 +633,7 @@ hw_perf_counter_init(struct perf_counter *counter) return NULL; } events[n] = ev; + ctrs[n] = counter; if (check_excludes(ctrs, n, 1)) return NULL; if (power_check_constraints(events, n + 1)) |