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| author | Alexander Shishkin <[email protected]> | 2017-10-23 12:35:33 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-10-24 11:19:27 +0000 |
| commit | 2eece390bf68ec8f733d7e4a3ba8a5ea350082ae (patch) | |
| tree | 94e5167d90a56e6437789583a626ca34a090b27b /tools/perf/util/annotate.c | |
| parent | Merge tag 'platform-drivers-x86-v4.14-3' of git://git.infradead.org/linux-pla... (diff) | |
| download | kernel-2eece390bf68ec8f733d7e4a3ba8a5ea350082ae.tar.gz kernel-2eece390bf68ec8f733d7e4a3ba8a5ea350082ae.zip | |
perf/x86/intel/bts: Fix exclusive event reference leak
Commit:
d2878d642a4ed ("perf/x86/intel/bts: Disallow use by unprivileged users on paranoid systems")
... adds a privilege check in the exactly wrong place in the event init path:
after the 'LBR exclusive' reference has been taken, and doesn't release it
in the case of insufficient privileges. After this, nobody in the system
gets to use PT or LBR afterwards.
This patch moves the privilege check to where it should have been in the
first place.
Signed-off-by: Alexander Shishkin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Fixes: d2878d642a4ed ("perf/x86/intel/bts: Disallow use by unprivileged users on paranoid systems")
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/util/annotate.c')
0 files changed, 0 insertions, 0 deletions