3.16.85-rc1 review patch. If anyone has any objections, please let me know.
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From: Vladis Dronov vdronov@redhat.com
commit 76319946f321e30872dd72af7de867cb26e7a373 upstream.
Any process is able to send netlink messages with invalid types. Make the warning rate-limited to prevent too much log spam.
The warning is supposed to help to find misbehaving programs, so print the triggering command name and pid.
Reported-by: Florian Weimer fweimer@redhat.com Signed-off-by: Vladis Dronov vdronov@redhat.com [PM: subject line tweak to make checkpatch.pl happy] Signed-off-by: Paul Moore pmoore@redhat.com Signed-off-by: Ben Hutchings ben@decadent.org.uk --- security/selinux/hooks.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
--- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -4683,11 +4683,12 @@ static int selinux_nlmsg_perm(struct soc err = selinux_nlmsg_lookup(sksec->sclass, nlh->nlmsg_type, &perm); if (err) { if (err == -EINVAL) { - printk(KERN_WARNING - "SELinux: unrecognized netlink message:" - " protocol=%hu nlmsg_type=%hu sclass=%s\n", + pr_warn_ratelimited("SELinux: unrecognized netlink" + " message: protocol=%hu nlmsg_type=%hu sclass=%s" + " pig=%d comm=%s\n", sk->sk_protocol, nlh->nlmsg_type, - secclass_map[sksec->sclass - 1].name); + secclass_map[sksec->sclass - 1].name, + task_pid_nr(current), current->comm); if (!selinux_enforcing || security_get_allow_unknown()) err = 0; }