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Adding /proc/timer_list to the masked paths list

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/proc/timer_list seems to leak information about the host. Here is
an example from a busybox container running on docker+kubernetes.

 # cat /proc/timer_list | grep -i -e kube
 <ffff8800b8cc3db0>, hrtimer_wakeup, S:01, futex_wait_queue_me, kubelet/2497
 <ffff880129ac3db0>, hrtimer_wakeup, S:01, futex_wait_queue_me, kube-proxy/3478
 <ffff8800b1b77db0>, hrtimer_wakeup, S:01, futex_wait_queue_me, kube-proxy/3470
 <ffff8800bb6abdb0>, hrtimer_wakeup, S:01, futex_wait_queue_me, kubelet/2499

Signed-Off-By: Davanum Srinivas <davanum@gmail.com>
Signed-off-by: Davanum Srinivas <davanum@gmail.com>
(cherry picked from commit 03bd00b68f)
Signed-off-by: Tibor Vass <tibor@docker.com>
This commit is contained in:
Davanum Srinivas 2016-08-11 15:12:35 -04:00 • committed by Tibor Vass
parent 7b95154474
commit 3048098843
1 changed files with 1 additions and 0 deletions
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1
oci/defaults_linux.go
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@ -81,6 +81,7 @@ func DefaultSpec() specs.Spec {
MaskedPaths: []string{
"/proc/kcore",
"/proc/latency_stats",
"/proc/timer_list",
"/proc/timer_stats",
"/proc/sched_debug",
},