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 80628467AA; Wed, 21 May 2025 11:32:39 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 6E9CC41156; Wed, 21 May 2025 11:32:39 +0200 (CEST) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 1534F40151 for ; Wed, 21 May 2025 11:32:38 +0200 (CEST) Received: by inbox.dpdk.org (Postfix, from userid 33) id 04C09467AB; Wed, 21 May 2025 11:32:37 +0200 (CEST) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/core Bug 1708] rte_malloc_socket failed to allocate with large alignment and ASan Date: Wed, 21 May 2025 09:32:37 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: core X-Bugzilla-Version: 21.11 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: plestringant@kalrayinc.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 Message-ID: Content-Type: multipart/alternative; boundary=17478199560.B5e8FC1.2161541 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 --17478199560.B5e8FC1.2161541 Date: Wed, 21 May 2025 11:32:36 +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=3D1708 Bug ID: 1708 Summary: rte_malloc_socket failed to allocate with large alignment and ASan Product: DPDK Version: 21.11 Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: core Assignee: dev@dpdk.org Reporter: plestringant@kalrayinc.com Target Milestone: --- After commit f92b9ebed03dbd140a5a7b921cb898e661a59068, I am unable to alloc= ate 1MiB aligned 1MiB with rte_malloc_socket when DPDK is built with ASan. Enter try_expand_heap_primary with pg_sz=3D0x200000, elt_size=3D0x100000, align=3D0x100000 alloc_sz is set to 0x200000 Enter alloc_pages_on_heap Enter find_suitable_element Enter elem_start_pt with elem of size 0x200000 MALLOC_ELEM_TRAILER_LEN is non zero because of ASan new_data_start is equal to elem because of alignment There is no room for the header and it fails. If my analysis is correct the formula used in try_expand_heap_primary to compute alloc_sz is off. I suggest something like: alloc_sz =3D RTE_ALIGN_CEIL(RTE_ALIGN_CEIL(elt_size + MALLOC_ELEM_TRAILER_L= EN, align) + MALLOC_ELEM_HEADER_LEN, pg_sz); I am working with branch 21.11, but I think this issue affects all the bran= ches which contain commit f92b9ebed03dbd140a5a7b921cb898e661a59068 --=20 You are receiving this mail because: You are the assignee for the bug.= --17478199560.B5e8FC1.2161541 Date: Wed, 21 May 2025 11:32:36 +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 1708
Summary rte_malloc_socket failed to allocate with large alignment and= ASan
Product DPDK
Version 21.11
Hardware All
OS All
Status UNCONFIRMED
Severity normal
Priority Normal
Component core
Assignee dev@dpdk.org
Reporter plestringant@kalrayinc.com
Target Milestone --- 

After commit f92b9ebed03dbd140a5a7=
b921cb898e661a59068, I am unable to allocate
1MiB aligned 1MiB with rte_malloc_socket when DPDK is built with ASan.

Enter try_expand_heap_primary with pg_sz=3D0x200000, elt_size=3D0x100000,
align=3D0x100000
alloc_sz is set to 0x200000
Enter alloc_pages_on_heap
Enter find_suitable_element
Enter elem_start_pt with elem of size 0x200000
MALLOC_ELEM_TRAILER_LEN is non zero because of ASan
new_data_start is equal to elem because of alignment
There is no room for the header and it fails.

If my analysis is correct the formula used in try_expand_heap_primary to
compute alloc_sz is off. I suggest something like:

alloc_sz =3D RTE_ALIGN_CEIL(RTE_ALIGN_CEIL(elt_size + MALLOC_ELEM_TRAILER_L=
EN,
align) + MALLOC_ELEM_HEADER_LEN, pg_sz);

I am working with branch 21.11, but I think this issue affects all the bran=
ches
which contain commit f92b9ebed03dbd140a5a7b921cb898e661a59068

You are receiving this mail because:
  • You are the assignee for the bug.
=20=20=20=20=20=20=20=20=20=20
= --17478199560.B5e8FC1.2161541--