diff options
| author | Peter Zijlstra <[email protected]> | 2017-01-31 10:27:10 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-02-10 08:04:50 +0000 |
| commit | 451d24d1e5f40bad000fa9abe36ddb16fc9928cb (patch) | |
| tree | 532b1fe208f3223a3b447f535f4a761f08c2527a /drivers/gpu/drm/imx/imx-tve.c | |
| parent | Merge tag 'perf-urgent-for-mingo-4.10-20170203' of git://git.kernel.org/pub/s... (diff) | |
| download | kernel-451d24d1e5f40bad000fa9abe36ddb16fc9928cb.tar.gz kernel-451d24d1e5f40bad000fa9abe36ddb16fc9928cb.zip | |
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 <[email protected]>
Tested-by: Alexei Starovoitov <[email protected]>
Tested-by: David Carrillo-Cisneros <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Fixes: d6a2f9035bfc ("perf/core: Introduce PMU_EV_CAP_READ_ACTIVE_PKG")
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/imx/imx-tve.c')
0 files changed, 0 insertions, 0 deletions