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| author | Peter Zijlstra <peterz@infradead.org> | 2019-03-14 14:01:14 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-03-15 12:22:51 +0100 |
| commit | ede271b059463731cbd6dffe55ffd70d7dbe8392 (patch) | |
| tree | 5d1b2014a92505823799984d192a60fa99501dfd /tools | |
| parent | f261c4e529dac5608a604d3dd3ae1cd2adf23c89 (diff) | |
| download | linux-0-day-ede271b059463731cbd6dffe55ffd70d7dbe8392.tar.gz linux-0-day-ede271b059463731cbd6dffe55ffd70d7dbe8392.tar.xz | |
perf/x86/intel: Fix memory corruption
Through:
validate_event()
x86_pmu.get_event_constraints(.idx=-1)
tfa_get_event_constraints()
dyn_constraint()
cpuc->constraint_list[-1] is used, which is an obvious out-of-bound access.
In this case, simply skip the TFA constraint code, there is no event
constraint with just PMC3, therefore the code will never result in the
empty set.
Fixes: 400816f60c54 ("perf/x86/intel: Implement support for TSX Force Abort")
Reported-by: Tony Jones <tonyj@suse.com>
Reported-by: "DSouza, Nelson" <nelson.dsouza@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Tony Jones <tonyj@suse.com>
Tested-by: "DSouza, Nelson" <nelson.dsouza@intel.com>
Cc: eranian@google.com
Cc: jolsa@redhat.com
Cc: stable@kernel.org
Link: https://lkml.kernel.org/r/20190314130705.441549378@infradead.org
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions