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Maniphest T7806

VPP: setting cpu skip-cores with no main-core configured crashes vpp process
Closed, ResolvedPublicBUG
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Description

The skip-cores option with no main-core configured passes config validation and causes vpp crash

set vpp settings interface eth1 driver 'dpdk'
set vpp settings cpu skip-cores 1
commit

journalctl.log42 KBDownload

Version:          VyOS 2025.09.10-0018-rolling
Release train:    current
Release flavor:   generic

Built by:         autobuild@vyos.net
Built on:         Wed 10 Sep 2025 00:18 UTC
Build UUID:       846c1b06-a380-48fa-b3dd-d954700da0a2
Build commit ID:  c6d3547904cfac

Architecture:     x86_64
Boot via:         installed image
System type:      KVM guest
Secure Boot:      n/a (BIOS)

Hardware vendor:  Amazon EC2
Hardware model:   c5.2xlarge
Hardware S/N:     ec228fe5-4b54-696b-21d1-31b62275d073
Hardware UUID:    ec228fe5-4b54-696b-21d1-31b62275d073

Details

Version
VyOS 2025.09.10-0018-rolling
Is it a breaking change?
Perfectly compatible
Issue type
Bug (incorrect behavior)

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Event Timeline

a.kudientsov created this task.Sep 11 2025, 11:06 AM
Unknown Object (User) triaged this task as Normal priority.Sep 11 2025, 11:17 AM
pasik subscribed.Sep 11 2025, 1:21 PM
natali-rs1985 changed the task status from Open to In progress.Sep 11 2025, 2:14 PM
natali-rs1985 claimed this task.
natali-rs1985 added a project: VyOS 1.5 Circinus (1.5-stream-2025-Q3).
natali-rs1985 changed Is it a breaking change? from Unspecified (possibly destroys the router) to Perfectly compatible.
a.kudientsov added a parent task: T7070: VPP related bugs the root task.Sep 15 2025, 9:22 AM
natali-rs1985 added a comment.Sep 16 2025, 7:37 AM

https://github.com/vyos/vyos-1x/pull/4721

natali-rs1985 mentioned this in rVYOSONEXa23dbe4bb921: T7806: VPP do not allow skip-cores to be configured without main-core.Sep 16 2025, 3:31 PM
Restricted Repository Identity mentioned this in rVYOSONEX4669748ca1b3: Merge pull request #4721 from natali-rs1985/T7806.Sep 16 2025, 3:31 PM
natali-rs1985 closed this task as Resolved.Sep 18 2025, 1:11 PM
natali-rs1985 moved this task from Need Triage to Completed on the VyOS Rolling board.
natali-rs1985 moved this task from Open to Finished on the VyOS 1.5 Circinus (1.5-stream-2025-Q3) board.
dmbaturin edited projects, added VyOS 1.5 Circinus (2025.11); removed VyOS 1.5 Circinus (1.5-stream-2025-Q3), VyOS Rolling.Thu, Nov 13, 12:01 AM