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perf evsel: Use zfree() to reduce chances of use after free
authorArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 12 Apr 2023 12:50:08 +0000 (09:50 -0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 12 Apr 2023 13:03:37 +0000 (10:03 -0300)
commitcdf13c0918c9b1b233d6db690fc4c06afbc29e57
tree69ca3b661930913dc36e264523dbea6cf3464928tree | snapshot
parentefe98a7a39777ce266142159f303fb52c3b817c0commit | diff
perf evsel: Use zfree() to reduce chances of use after free

Do defensive programming by using zfree() to initialize freed pointers
to NULL, so that eventual use after free result in a NULL pointer deref
instead of more subtle behaviour.

Also remove one NULL test before free(), as it accepts a NULL arg and we
get one line shaved not doing it explicitely.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/evsel.c diff | blob | history
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