linux-stable

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History

Peter Zijlstra 451d24d1e5 perf/core: Fix crash in perf_event_read()

Alexei had his box explode because doing read() on a package
(rapl/uncore) event that isn't currently scheduled in ends up doing an
out-of-bounds load.

Rework the code to more explicitly deal with event->oncpu being -1.

Reported-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: David Carrillo-Cisneros <davidcc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: eranian@google.com
Fixes: d6a2f9035bfc ("perf/core: Introduce PMU_EV_CAP_READ_ACTIVE_PKG")
Link: http://lkml.kernel.org/r/20170131102710.GL6515@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>

2017-02-10 09:04:50 +01:00

callchain.c

perf core: Per event callchain limit

2016-05-30 12:41:44 -03:00

core.c

perf/core: Fix crash in perf_event_read()

2017-02-10 09:04:50 +01:00

hw_breakpoint.c

perf: Collapse and fix event_function_call() users

2016-01-21 18:54:24 +01:00

internal.h

bpf, events: fix offset in skb copy handler