Thanks for the strace, these looked like the 'important' parts:
sendto(3, {{len=56, type=AUDIT_SET, flags=NLM_F_REQUEST|NLM_F_ACK, seq=3,
pid=0},
"\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa2\xb8\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"...},
56, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 56
poll([{fd=3, events=POLLIN}], 1, 500) = 1 ([{fd=3, revents=POLLIN}])
recvfrom(3, {{len=76, type=NLMSG_ERROR, flags=0, seq=3, pid=2734242},
{error=-EEXIST, msg={{len=56, type=AUDIT_SET, flags=NLM_F_REQUEST|NLM_F_ACK,
seq=3, pid=0},
"\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa2\xb8\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"...}}},
8988, MSG_PEEK|MSG_DONTWAIT, {sa_family=AF_NETLINK, nl_pid=0,
nl_groups=00000000}, [12]) = 76
recvfrom(3, {{len=76, type=NLMSG_ERROR, flags=0, seq=3, pid=2734242},
{error=-EEXIST, msg={{len=56, type=AUDIT_SET, flags=NLM_F_REQUEST|NLM_F_ACK,
seq=3, pid=0},
"\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xa2\xb8\x29\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"...}}},
8988, MSG_DONTWAIT, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000},
[12]) = 76
write(2, "Error setting audit daemon pid ("..., 44Error setting audit daemon
pid (File exists)) = 44
...
write(2, "The audit daemon is exiting.", 28The audit daemon is exiting.) = 28
write(2, "\n", 1
) = 1
sendto(3, {{len=56, type=AUDIT_SET, flags=NLM_F_REQUEST|NLM_F_ACK, seq=4,
pid=0},
"\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"...},
56, 0, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000}, 12) = 56
poll([{fd=3, events=POLLIN}], 1, 500) = 1 ([{fd=3, revents=POLLIN}])
recvfrom(3, {{len=76, type=NLMSG_ERROR, flags=0, seq=4, pid=2734242},
{error=-EACCES, msg={{len=56, type=AUDIT_SET, flags=NLM_F_REQUEST|NLM_F_ACK,
seq=4, pid=0},
"\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"...}}},
8988, MSG_PEEK|MSG_DONTWAIT, {sa_family=AF_NETLINK, nl_pid=0,
nl_groups=00000000}, [12]) = 76
recvfrom(3, {{len=76, type=NLMSG_ERROR, flags=0, seq=4, pid=2734242},
{error=-EACCES, msg={{len=56, type=AUDIT_SET, flags=NLM_F_REQUEST|NLM_F_ACK,
seq=4, pid=0},
"\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"...}}},
8988, MSG_DONTWAIT, {sa_family=AF_NETLINK, nl_pid=0, nl_groups=00000000},
[12]) = 76
write(2, "Error setting audit daemon pid ("..., 50Error setting audit daemon
pid (Permission denied)) = 50
write(2, "\n", 1
) = 1
I don't understand why it's issuing an AUDIT_SET command after it
already decided to exit -- maybe it's just trying to tear itself down
cleanly.
I found a few cases in the kernel code for returning both file exists and
permission denied:
kernel/audit.c audit_netlink_ok():
/* Only support auditd and auditctl in initial pid namespace
* for now. */
if (task_active_pid_ns(current) != &init_pid_ns)
return -EPERM;
if (!netlink_capable(skb, CAP_AUDIT_CONTROL))
err = -EPERM;
break;
kernel/audit.c audit_receive_msg():
auditd_pid = auditd_pid_vnr();
if (auditd_pid) {
/* replacing a healthy auditd is not allowed */
if (new_pid) {
audit_log_config_change("audit_pid",
new_pid, auditd_pid, 0);
return -EEXIST;
}
kernel/audit.c audit_set_feature():
/* are we changing a locked feature? */
if (old_lock && (new_feature != old_feature)) {
audit_log_feature_change(i, old_feature, new_feature,
old_lock, new_lock, 0);
return -EPERM;
}
Do any of these feel applicable to your environment?
Thanks
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1873627
Title:
auditd fails after moving /var it a new filesystem and turning
/var/run into a symlink to /run
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/audit/+bug/1873627/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
