mirror of
https://github.com/torvalds/linux.git
synced 2026-11-10 17:11:02 +01:00
cf3d239189
perf_event__synthesize_schedstat() has two event lifetime issues.
After a successful iteration, event is freed but retains its value. If
the next iteration starts with an unrecognized schedstat record type,
neither synthesizer assigns a new value. The stale pointer then passes
the NULL check, may be passed to process(), and is freed again.
In addition, when user_requested_cpus filters out a synthesized event,
the continue path skips free(event), leaking the event.
Make event local to each loop iteration so it always starts as NULL.
Also avoid the filter continue and unconditionally free each synthesized
event at the end of the iteration.
Fixes:
|
||
|---|---|---|
| .. | ||
| accounting | ||
| arch | ||
| bootconfig | ||
| bpf | ||
| build | ||
| certs | ||
| cgroup | ||
| counter | ||
| crypto | ||
| debugging | ||
| dma | ||
| docs | ||
| firewire | ||
| firmware | ||
| gpio | ||
| hv | ||
| iio | ||
| include | ||
| kvm/kvm_stat | ||
| laptop | ||
| leds | ||
| lib | ||
| memory-model | ||
| mm | ||
| net | ||
| objtool | ||
| pcmcia | ||
| perf | ||
| platform/x86/amd | ||
| power | ||
| rcu | ||
| sched | ||
| sched_ext | ||
| scripts | ||
| sound | ||
| spi | ||
| testing | ||
| thermal | ||
| time | ||
| tracing | ||
| unittests | ||
| usb | ||
| verification | ||
| virtio | ||
| wmi | ||
| workqueue | ||
| writeback | ||
| Makefile | ||