Recently I started to use KMSAN and found the warning in security/selinux/hooks.c which triggers each time I use the official guide to run syzkaller reproducers Link: https://github.com/google/syzkaller/blob/master/docs/syzbot_assets.md#run-a-c-reproducer I'm not quiet confident what are the rules in security subsystem. It's not a bug, but a warning which is triggered by KMSAN for the argument of the security_net_peersid_resolve() which was not initialized. It will not affect anything inside this function, at least with the current order of checking the variables, which might eventually change. Please reply if you're ok with such not-a-bug fixes. Otherwise I'll just ignore this warning in my experiments with KMSAN. PS: most likely if fixes commit 220deb966ea5 ("SELinux: Better integration between peer labeling subsystems"). Not sure if this tag is needed for this patch. Andrew Kanner (1): selinux: netlabel: Prevent KMSAN warning in selinux_inet_conn_request() security/selinux/netlabel.c | 1 + 1 file changed, 1 insertion(+) -- 2.39.3