From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id A6CBD42ABE; Tue, 9 May 2023 16:24:27 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 3788F42D31; Tue, 9 May 2023 16:24:27 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id A716A41151 for ; Tue, 9 May 2023 16:24:26 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id 8408442ABF; Tue, 9 May 2023 16:24:26 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [Bug 1227] KNI : memory-leaks, each time kni_rx_burst it is allocates new mbufs even if no needs. Date: Tue, 09 May 2023 14:24:26 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: ethdev X-Bugzilla-Version: 22.11 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: yasinncaner@gmail.com X-Bugzilla-Status: UNCONFIRMED X-Bugzilla-Resolution: X-Bugzilla-Priority: Normal X-Bugzilla-Assigned-To: dev@dpdk.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter target_milestone attachments.created Message-ID: Content-Type: multipart/alternative; boundary=16836422660.D0f4.2392870 Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org --16836422660.D0f4.2392870 Date: Tue, 9 May 2023 16:24:26 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All https://bugs.dpdk.org/show_bug.cgi?id=3D1227 Bug ID: 1227 Summary: KNI : memory-leaks, each time kni_rx_burst it is allocates new mbufs even if no needs. Product: DPDK Version: 22.11 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: ethdev Assignee: dev@dpdk.org Reporter: yasinncaner@gmail.com Target Milestone: --- Created attachment 251 --> https://bugs.dpdk.org/attachment.cgi?id=3D251&action=3Dedit flow_kni_rx_burst Hello I tried to explain memory-leak via graph=20 https://pastebin.ubuntu.com/p/s4h5psqtgZ/ scenario :=20 1. kni_alloc allocates 32 units (kni->alloc_q) then completes initialization 2. rte_kni_rx_burst receive 1 packet from kernel. 1 of 31 units is filled by message, 31 units is empty but it is allocated in kni->alloc_q. 3. rte_kni_rx_burst then allocates another 32 units i dont know why but the= re is a comment like this."If buffers removed, allocate mbufs and then put them into alloc_q" ( How to tests buffers are removed or not? there is not any q= uery in code) 4. 1 message mbuf is transmited via rte_eth_tx_burst .=20 5. 1 message mbuf never back to freed and back to original memory pool. 31+= 32 units memory act like in use but they are not. never back to original memory pool 6. this cycle goes on to 2 . ? Why there is newer allocation in rte_kni_rx_burst i dont know. ? I tried to free 1 packet via rte_pktmbuf_free but sometimes corrupt to po= ol like below. sometimes 1 packet/unit back to original memory pool [UseCount_mpool:65][avail_mpool:10334] [UseCount_mpool:4294967135][avail_mpool:10560] ? In my view, after transmiting message to mbufs should be in to kni->free_= q. ? in my view, there is missing query in func kni_allocate_mbufs to test all= oc_q is empty or not. Best regards. --=20 You are receiving this mail because: You are the assignee for the bug.= --16836422660.D0f4.2392870 Date: Tue, 9 May 2023 16:24:26 +0200 MIME-Version: 1.0 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.dpdk.org/ Auto-Submitted: auto-generated X-Auto-Response-Suppress: All
Bug ID 1227
Summary KNI : memory-leaks, each time kni_rx_burst it is allocates ne= w mbufs even if no needs.
Product DPDK
Version 22.11
Hardware All
OS All
Status UNCONFIRMED
Severity normal
Priority Normal
Component ethdev
Assignee dev@dpdk.org
Reporter yasinncaner@gmail.com
Target Milestone --- 

Created attachment 251 [details]
flow_kni_rx_burst

Hello

I tried to explain memory-leak via graph=20

https://pastebin.ubun=
tu.com/p/s4h5psqtgZ/


scenario :=20

1. kni_alloc allocates 32 units (kni->alloc_q) then completes initializa=
tion
2. rte_kni_rx_burst receive 1 packet from kernel. 1 of 31 units is filled by
message, 31 units is empty but it is allocated in kni->alloc_q.
3. rte_kni_rx_burst then allocates another 32 units i dont know why but the=
re
is a comment like this."If buffers removed, allocate mbufs and then pu=
t them
into alloc_q" ( How to tests buffers are removed or not? there is not =
any query
in code)
4. 1 message mbuf is transmited via rte_eth_tx_burst .=20
5. 1 message mbuf never back to freed and back to original memory pool. 31+=
32
units memory act like in use but they are not. never back to original memory
pool
6. this cycle goes on to 2 .

? Why there is newer allocation in rte_kni_rx_burst i dont know.
? I tried to free 1 packet via rte_pktmbuf_free but sometimes corrupt to po=
ol
like below. sometimes 1 packet/unit back to original memory pool
[UseCount_mpool:65][avail_mpool:10334]
[UseCount_mpool:4294967135][avail_mpool:10560]
? In my view, after transmiting message to mbufs should be in to kni->fr=
ee_q.
? in my view, there is missing query in func kni_allocate_mbufs to test all=
oc_q
is empty or not.
Best regards.

You are receiving this mail because:
  • You are the assignee for the bug.
=20=20=20=20=20=20=20=20=20=20
= --16836422660.D0f4.2392870--