From: bugzilla@dpdk.org
To: dev@dpdk.org
Subject: [DPDK/ethdev Bug 2031] cn10k: NPA_POOL_ERR_INT_RANGE on Pool 1 during mbuf pool creation in testpmd
Date: Fri, 04 Sep 2026 19:14:02 +0000 [thread overview]
Message-ID: <bug-2031-3@https.bugs.dpdk.org/> (raw)
https://bugs.dpdk.org/show_bug.cgi?id=2031
Bug ID: 2031
Summary: cn10k: NPA_POOL_ERR_INT_RANGE on Pool 1 during mbuf
pool creation in testpmd
Product: DPDK
Version: 24.11
Hardware: ARM
OS: Linux
Status: UNCONFIRMED
Severity: critical
Priority: Normal
Component: ethdev
Assignee: dev@dpdk.org
Reporter: amiyaranjan.mohakud@gmail.com
Target Milestone: ---
Created attachment 390
--> https://bugs.dpdk.org/attachment.cgi?id=390&action=edit
testpmd-cn10k-mempool-issue.txt
Environment:
------------
- SoC: Marvell Octeon CN10K (cn10kb_a0)
- Kernel: 6.12.68
- DPDK: 24.11.2
- IOVA mode: PA
- VFIO: no-iommu mode
- Hugepages: 1024 x 2MB (2048 MB total)
- Mempool ops: cn10k_mempool_ops
Description:
--------------
testpmd creates mbuf pool mb_pool_0 (n=203456, size=2304) using
cn10k_mempool_ops. During pool populate, Pool 1 triggers NPA_POOL_ERR_INT_RANGE
repeatedly, followed by Err_intr=0x1000:
testpmd: create a new mbuf pool <mb_pool_0>: n=203456, size=2304, socket=0
testpmd: preferred mempool ops selected: cn10k_mempool_ops
CNXK: npa_q_irq():150 queue_intr=0x1 qintx=1
CNXK: npa_q_irq():165 Pool=1 NPA_POOL_ERR_INT_RANGE
(repeats 4 times during mbuf pool populate)
Configuring Port 0 (socket 0)
CNXK: npa_err_irq():18 Err_intr=0x1000
CNXK: npa_err_irq():18 Err_intr=0x1000
Pool 1 context at time of error:
ptr_start: 0x24808d200
ptr_end: 0x267200000
buf_size: 20 (units of 128 bytes = 2560 bytes)
buf_offset: 1
count: decreasing across dumps (0x31aa6 → 0x31a91 → 0x31a79 → 0)
op_pc: increasing (0x1a → 0x2f → 0x47 → 0x31ac0)
stack_pages: 0 (remains zero across all dumps)
Notable observations:
----------------------
- stack_pages remains 0 throughout, even as op_pc increases — suggesting
buffers are being freed but the stack is not being updated
- count decreases to 0 by the final dump, indicating the pool is fully
drained
- The address range [0x24808d200, 0x267200000) spans ~512 MB, but the mempool
requests ~203K buffers of 2304 bytes (~447 MB)
Expected Result
-------------------
No NPA pool range errors. Pool 1 should initialize and populate without
triggering NPA_POOL_ERR_INT_RANGE or npa_err_irq interrupts.
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