3.16.75-rc1 review patch. If anyone has any objections, please let me know.
--
From: Jan Stancek
commit 68de8867ea5d99127e836c23f6bccf4d44859623 upstream.
One path in power_pmu_event_init() calls get_cpu_var(), but is
missing matching call to put_cpu_var(), which causes preemp
...@jms.id.au
> Sent: Wednesday, 25 March, 2015 6:25:09 AM
> Subject: Re: powerpc/perf: add missing put_cpu_var in power_pmu_event_init
>
> On Tue, 2015-24-03 at 12:33:22 UTC, Jan Stancek wrote:
> > One path in power_pmu_event_init() calls get_cpu_var(), but is
> > miss
On Tue, 2015-24-03 at 12:33:22 UTC, Jan Stancek wrote:
> One path in power_pmu_event_init() calls get_cpu_var(), but is
> missing matching call to put_cpu_var(), which causes preemption
> imbalance and crash in user-space:
>
> Page fault in user mode with in_atomic() = 1 mm = c01fefa5a280
>
One path in power_pmu_event_init() calls get_cpu_var(), but is
missing matching call to put_cpu_var(), which causes preemption
imbalance and crash in user-space:
Page fault in user mode with in_atomic() = 1 mm = c01fefa5a280
NIP = 3fff9bf2cae0 MSR = 90014280f032
Oops: Weird page fau
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