Messages in this thread Patch in this message | | | From | Gaurav Singh <> | Subject | [PATCH] [perf] Fix null pointer deference in nest_epollfd | Date | Wed, 17 Jun 2020 20:38:49 -0400 |
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Add a NULL check for worker before dereferencing.
Signed-off-by: Gaurav Singh <gaurav1086@gmail.com> --- tools/perf/bench/epoll-wait.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/tools/perf/bench/epoll-wait.c b/tools/perf/bench/epoll-wait.c index 75dca9773186..42983eb7f82e 100644 --- a/tools/perf/bench/epoll-wait.c +++ b/tools/perf/bench/epoll-wait.c @@ -239,6 +239,9 @@ static void *workerfn(void *arg) static void nest_epollfd(struct worker *w) { + if (!w) + return; + unsigned int i; struct epoll_event ev; int efd = multiq ? w->epollfd : epollfd; -- 2.17.1
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