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feat(core) : reducing locks coverage to avoid potential deadlocks #1883

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merged 2 commits into from
Dec 6, 2024

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Prateeknandle
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Purpose of PR?:

Fixes #

Does this PR introduce a breaking change?

If the changes in this PR are manually verified, list down the scenarios covered::

Additional information for reviewer? :
Mention if this PR is part of any design or a continuation of previous PRs

Checklist:

  • Bug fix. Fixes #
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • This change requires a documentation update
  • PR Title follows the convention of <type>(<scope>): <subject>
  • Commit has unit tests
  • Commit has integration tests

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Initial overview

KubeArmor/core/kubeUpdate.go Outdated Show resolved Hide resolved
KubeArmor/core/kubeUpdate.go Show resolved Hide resolved
daemon1024
daemon1024 previously approved these changes Oct 30, 2024
@daemon1024 daemon1024 changed the title Enhancement : reducing locks coverage feat(core) : reducing locks coverage to avoid potential deadlocks Oct 30, 2024
@daemon1024 daemon1024 force-pushed the deadlock branch 2 times, most recently from 098eaaf to acc5ed8 Compare November 7, 2024 06:06
rootxrishabh
rootxrishabh previously approved these changes Nov 13, 2024
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Basic sanity successful -

rootxrishabh@fedora:~/KubeArmor/KubeArmor/build$ karmor logs 
local port to be used for port forwarding kubearmor-relay-66999cb886-scthr: 32785 
Created a gRPC client (localhost:32785)
Checked the liveness of the gRPC server
Started to watch alerts
== Alert / 2024-11-13 14:50:33.957179 ==
ClusterName: default
HostName: gke-rishabh-cluster-default-pool-7ceba30f-fpcc
NamespaceName: default
PodName: nginx-bf5d5cf98-2s97v
Labels: app=nginx
ContainerName: nginx
ContainerID: d74ce140d48a586c5d6c55b5586356a635d6d3975e15ebe7a7aa86e0d238544d
ContainerImage: docker.io/library/nginx:latest@sha256:bc5eac5eafc581aeda3008b4b1f07ebba230de2f27d47767129a6a905c84f470
Type: MatchedPolicy
PolicyName: block-pkg-mgmt-tools-exec
Severity: 1
Source: /usr/bin/bash
Resource: /usr/bin/apt
Operation: Process
Action: Block
Data: lsm=SECURITY_BPRM_CHECK
Enforcer: BPFLSM
Result: Permission denied
Cwd: /
HostPID: 99824
HostPPID: 99799
Owner: map[Name:nginx Namespace:default Ref:Deployment]
PID: 43
PPID: 99799
ParentProcessName: /usr/bin/bash
ProcessName: /usr/bin/apt
UID: 0


rootxrishabh@fedora:~/KubeArmor/KubeArmor/build$ k exec -it nginx-bf5d5cf98-2s97v -n default  -- bash
root@nginx-bf5d5cf98-2s97v:/# apt
bash: /usr/bin/apt: Permission denied

Containers:
  kubearmor:
    Container ID:  containerd://7c30be7cf790666a4bb38648d71c0544712066dbf6d6164b382a0dafe336ab47
    Image:         rootxrishabh/kubearmor:deadlock
    Image ID:      docker.io/rootxrishabh/kubearmor@sha256:310790aa69a419da76e16a4a09d0d2e779a3ed0082df6fb4068058db5c25f5c9

Environment -

  • K8s -> GKE
  • Container Runtime -> containerd://1.7.22
  • Kernel Version -> 6.1.100+
  • Operating system -> Container-Optimized OS from Google

@rksharma95
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race conditions found, @Prateeknandle can you check again?
kubearmor_race.log

@DelusionalOptimist
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@Prateeknandle this is a must for stable release. Can you please check @rksharma95's comments?
cc @daemon1024

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CITY

@daemon1024 daemon1024 merged commit 67cde68 into kubearmor:main Dec 6, 2024
17 checks passed
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5 participants