LayerscapeのトピックLSDK20.04-isc-19 Memory Error

LSDK20.04-isc-19 Memory Error

Chidananda22 — Mon, 01 Sep 2025 14:48:19 GMT

Hi All,

Previously I was using LSDK20.04-isc-09 . All running fine.

Now compiling my application with LSDK20.04-isc-19. Getting issue while pool creation .

It hangs . in GDB i can see stack corrupted .

compared . config and config/defconfig_arm64-dpaa-linuxapp-gcc.

Disabled :

CONFIG_RTE_LA12XX_SOCKET_ID=0

CONFIG_RTE_LA12XX_SOCKET_MAX_SEG=0

Any memory and pool related changes I need to take care in my application.

Please suggest

Re: LSDK20.04-isc-19 Memory Error

LFGP — Tue, 02 Sep 2025 00:43:01 GMT

dear @Chidananda22 ,

there were several updates between both releases (LSDK20.04-isc-09-Ubuntu 18 and LSDK20.04-isc-19-Ubuntu20).

You need to upgrade your developer environment. Please considere to use the LSDK21.08 release.

LFGP

Re: LSDK20.04-isc-19 Memory Error

Chidananda22 — Tue, 02 Sep 2025 13:00:04 GMT

thanks @LFGP for your quick response . I will use 21.08 LSDK and update you ,

Re: LSDK20.04-isc-19 Memory Error

Chidananda22 — Tue, 02 Sep 2025 13:14:35 GMT

Hi @LFGP

Verified with LSDK 21.08 . Same result. Stuck in memory allocation .

Currently our application working fine with isc-09 . But while migrating to isc-19 it is stuck in memory allocation .

Working Logs

fslmc: fslmc_get_container_group(): Container: dprc.2 has VFIO iommu group id = 11
fslmc: fslmc_vfio_setup_group(): VFIO Container FD is [0x1D]
fslmc: fslmc_map_dma(): --> Map address: 0x140000000, size: 1073741824
fslmc: rte_fslmc_vfio_dmamap(): Installed memory callback handler
fslmc: rte_fslmc_vfio_dmamap(): Total 1 segments found.
fslmc: Unable to map region (errno = 22)

fslmc: dpaa2_get_qbman_swp(): New Portal 0x17ffec3c0 (2) affined thread - 2340
fslmc: dpaa2_configure_stashing(): Portal= 2 CPU= 3 SDEST= 1
fslmc: DPAA Portal=0x17ffec3c0 (2) is affined to thread 2340
fslmc: dpaa2_get_qbman_swp(): New Portal 0x17ffe4dc0 (3) affined thread - 2341
fslmc: dpaa2_configure_stashing(): Portal= 3 CPU= 2 SDEST= 1
fslmc: DPAA Portal=0x17ffe4dc0 (3) is affined to thread 2341
fslmc: fslmc_memevent_cb(): Request for alloc, va=0x1c0000000, virt_addr=0x1c0000000, iova=0x1c0000000, map_len=1073741824
fslmc: fslmc_map_dma(): --> Map address: 0x1c0000000, size: 1073741824
fslmc: fslmc_memevent_cb(): Total Mapped: addr=0x1c0000000, len=1073741824
fslmc: dpaa2_get_qbman_swp(): New Portal 0x17ffdd7c0 (4) affined thread - 2338
fslmc: dpaa2_configure_stashing(): Portal= 4 CPU= 1 SDEST= 0
fslmc: DPAA Portal=0x17ffdd7c0 (4) is affined for eth rx to thread 2338
fslmc: fslmc_memevent_cb(): Request for alloc, va=0x200000000, virt_addr=0x200000000, iova=0x200000000, map_len=1073741824

Not working Logs

fslmc: fslmc_get_group_id(): GROUP(dprc.2) has VFIO iommu group id = 11
fslmc: fslmc_vfio_setup_group(): VFIO GROUP FD is 28
fslmc: fslmc_map_dma(): DMA MEM map size(40000000): VA(140000000):IOVA(140000000):PHY(2700000000)
fslmc NOTICE: DMA MEM map size(40000000): VA(140000000):IOVA(140000000):PHY(2700000000)
fslmc: rte_fslmc_vfio_dmamap(): Installed memory callback handler
fslmc: rte_fslmc_vfio_dmamap(): Total 1 segments found.

Stuck Here

fslmc: fslmc_memevent_cb(): alloc, va=0x180000000, virt=180000000, iova=180000000, len=1073741824
fslmc: fslmc_map_dma(): DMA MEM map size(40000000): VA(180000000):IOVA(180000000):PHY(26c0000000)

recompiled again with

CONFIG_RTE_LA12XX_SOCKET_ID=0

CONFIG_RTE_LA12XX_SOCKET_MAX_SEG=0

No success . If any quick help based on above logs .

Re: LSDK20.04-isc-19 Memory Error

LFGP — Wed, 03 Sep 2025 16:28:01 GMT

dear @Chidananda22

please be sure regarding the free space to allocate the DMA.
On the other hand, please set the CONFIG_DEBUG_FS, CONFIG_DMA_API_DEBUG in the Kernel, in order to get out more info about the issue.
could you please share the complete logs for isc-09 and isc-19 as a compressed file.

Re: LSDK20.04-isc-19 Memory Error

Chidananda22 — Fri, 05 Sep 2025 11:44:26 GMT

Thanks @LFGP .

Resolved after migrating to isc-23 . All application are up and running .

Re: LSDK20.04-isc-19 Memory Error

LFGP — Fri, 05 Sep 2025 18:03:18 GMT

Dear @Chidananda22,

that is a great new, thanks for share your findings.
BR
LFGP