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 4330B4641D; Wed, 19 Mar 2025 13:16:10 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 2E8AF402C4; Wed, 19 Mar 2025 13:16:10 +0100 (CET) Received: from inbox.dpdk.org (inbox.dpdk.org [95.142.172.178]) by mails.dpdk.org (Postfix) with ESMTP id 97A884026B for ; Wed, 19 Mar 2025 13:16:08 +0100 (CET) Received: by inbox.dpdk.org (Postfix, from userid 33) id 81A8A46423; Wed, 19 Mar 2025 13:16:08 +0100 (CET) From: bugzilla@dpdk.org To: dev@dpdk.org Subject: [DPDK/other Bug 1678] acl: build issue in Neon implementation with GCC 15 in Fedora Rawhide Aarch64 Date: Wed, 19 Mar 2025 12:16:07 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: DPDK X-Bugzilla-Component: other X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: david.marchand@redhat.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=17423865680.9bAEa93.671928 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 --17423865680.9bAEa93.671928 Date: Wed, 19 Mar 2025 13:16:08 +0100 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=3D1678 Bug ID: 1678 Summary: acl: build issue in Neon implementation with GCC 15 in Fedora Rawhide Aarch64 Product: DPDK Version: unspecified Hardware: All OS: All Status: UNCONFIRMED Severity: normal Priority: Normal Component: other Assignee: dev@dpdk.org Reporter: david.marchand@redhat.com Target Milestone: --- This was caught in OBS, and can be reproduced with a Fedora Rawhide aarch64 container. bash-5.2# meson setup build-fedora-aarch64 -Ddisable_drivers=3D*/* -Denable_libs=3Dacl -Ddeveloper_mode=3Ddisabled -Dmachine=3Ddefault ... bash-5.2# ninja -C build-fedora-aarch64 lib/librte_acl.a ninja: Entering directory `build-fedora-aarch64' [6/7] Compiling C object lib/librte_acl.a.p/acl_acl_run_neon.c.o In file included from ../lib/acl/acl_run_neon.h:7, from ../lib/acl/acl_run_neon.c:5: In function 'alloc_completion', inlined from 'acl_start_next_trie' at ../lib/acl/acl_run.h:140:24, inlined from 'search_neon_4.isra' at ../lib/acl/acl_run_neon.h:239:20: ../lib/acl/acl_run.h:93:25: warning: 'cmplt' may be used uninitialized [-Wmaybe-uninitialized] 93 | if (p[n].count =3D=3D 0) { | ~~~~^~~~~~ ../lib/acl/acl_run_neon.h: In function 'search_neon_4.isra': ../lib/acl/acl_run_neon.h:230:27: note: 'cmplt' declared here 230 | struct completion cmplt[4]; | ^~~~~ In function 'alloc_completion', inlined from 'acl_start_next_trie' at ../lib/acl/acl_run.h:140:24, inlined from 'search_neon_4.isra' at ../lib/acl/acl_run_neon.h:239:20: ../lib/acl/acl_run.h:93:25: warning: 'cmplt' may be used uninitialized [-Wmaybe-uninitialized] 93 | if (p[n].count =3D=3D 0) { | ~~~~^~~~~~ ../lib/acl/acl_run_neon.h: In function 'search_neon_4.isra': ../lib/acl/acl_run_neon.h:230:27: note: 'cmplt' declared here 230 | struct completion cmplt[4]; | ^~~~~ In function 'alloc_completion', inlined from 'acl_start_next_trie' at ../lib/acl/acl_run.h:140:24, inlined from 'search_neon_4.isra' at ../lib/acl/acl_run_neon.h:239:20: ../lib/acl/acl_run.h:93:25: warning: 'cmplt' may be used uninitialized [-Wmaybe-uninitialized] 93 | if (p[n].count =3D=3D 0) { | ~~~~^~~~~~ ../lib/acl/acl_run_neon.h: In function 'search_neon_4.isra': ../lib/acl/acl_run_neon.h:230:27: note: 'cmplt' declared here 230 | struct completion cmplt[4]; | ^~~~~ [7/7] Linking static target lib/librte_acl.a A quick fix (needs review): diff --git a/lib/acl/acl_run_neon.h b/lib/acl/acl_run_neon.h index 63074f871d..ed7424e076 100644 --- a/lib/acl/acl_run_neon.h +++ b/lib/acl/acl_run_neon.h @@ -234,10 +234,10 @@ search_neon_4(const struct rte_acl_ctx *ctx, const uint8_t **data, acl_set_flow(&flows, cmplt, RTE_DIM(cmplt), data, results, total_packets, categories, ctx->trans_table); - for (n =3D 0; n < 4; n++) { + for (n =3D 0; n < 4; n++) cmplt[n].count =3D 0; + for (n =3D 0; n < 4; n++) index_array[n] =3D acl_start_next_trie(&flows, parms, n, ct= x); - } /* Check for any matches. */ acl_match_check_x4(0, ctx, parms, &flows, index_array); --=20 You are receiving this mail because: You are the assignee for the bug.= --17423865680.9bAEa93.671928 Date: Wed, 19 Mar 2025 13:16:08 +0100 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 1678
Summary acl: build issue in Neon implementation with GCC 15 in Fedora= Rawhide Aarch64
Product DPDK
Version unspecified
Hardware All
OS All
Status UNCONFIRMED
Severity normal
Priority Normal
Component other
Assignee dev@dpdk.org
Reporter david.marchand@redhat.com
Target Milestone --- 

This was caught in OBS, and can be=
 reproduced with a Fedora Rawhide aarch64
container.

bash-5.2# meson setup build-fedora-aarch64 -Ddisable_drivers=3D*/*
-Denable_libs=3Dacl -Ddeveloper_mode=3Ddisabled -Dmachine=3Ddefault
...
bash-5.2# ninja -C build-fedora-aarch64 lib/librte_acl.a
ninja: Entering directory `build-fedora-aarch64'
[6/7] Compiling C object lib/librte_acl.a.p/acl_acl_run_neon.c.o
In file included from ../lib/acl/acl_run_neon.h:7,
                 from ../lib/acl/acl_run_neon.c:5:
In function 'alloc_completion',
    inlined from 'acl_start_next_trie' at ../lib/acl/acl_run.h:140:24,
    inlined from 'search_neon_4.isra' at ../lib/acl/acl_run_neon.h:239:20:
../lib/acl/acl_run.h:93:25: warning: 'cmplt' may be used uninitialized
[-Wmaybe-uninitialized]
   93 |                 if (p[n].count =3D=3D 0) {
      |                     ~~~~^~~~~~
../lib/acl/acl_run_neon.h: In function 'search_neon_4.isra':
../lib/acl/acl_run_neon.h:230:27: note: 'cmplt' declared here
  230 |         struct completion cmplt[4];
      |                           ^~~~~
In function 'alloc_completion',
    inlined from 'acl_start_next_trie' at ../lib/acl/acl_run.h:140:24,
    inlined from 'search_neon_4.isra' at ../lib/acl/acl_run_neon.h:239:20:
../lib/acl/acl_run.h:93:25: warning: 'cmplt' may be used uninitialized
[-Wmaybe-uninitialized]
   93 |                 if (p[n].count =3D=3D 0) {
      |                     ~~~~^~~~~~
../lib/acl/acl_run_neon.h: In function 'search_neon_4.isra':
../lib/acl/acl_run_neon.h:230:27: note: 'cmplt' declared here
  230 |         struct completion cmplt[4];
      |                           ^~~~~
In function 'alloc_completion',
    inlined from 'acl_start_next_trie' at ../lib/acl/acl_run.h:140:24,
    inlined from 'search_neon_4.isra' at ../lib/acl/acl_run_neon.h:239:20:
../lib/acl/acl_run.h:93:25: warning: 'cmplt' may be used uninitialized
[-Wmaybe-uninitialized]
   93 |                 if (p[n].count =3D=3D 0) {
      |                     ~~~~^~~~~~
../lib/acl/acl_run_neon.h: In function 'search_neon_4.isra':
../lib/acl/acl_run_neon.h:230:27: note: 'cmplt' declared here
  230 |         struct completion cmplt[4];
      |                           ^~~~~
[7/7] Linking static target lib/librte_acl.a


A quick fix (needs review):
diff --git a/lib/acl/acl_run_neon.h b/lib/acl/acl_run_neon.h
index 63074f871d..ed7424e076 100644
--- a/lib/acl/acl_run_neon.h
+++ b/lib/acl/acl_run_neon.h
@@ -234,10 +234,10 @@ search_neon_4(const struct rte_acl_ct=
x *ctx, const
uint8_t **data,
        acl_set_flow(&flows, cmplt, RTE_DIM(cmplt), data, results,
                     total_packets, categories, ctx->trans_table);

-       for (n =3D 0; n < 4; n++) {
+       for (n =3D 0; n < 4; n++)
                cmplt[n].count =3D 0;
+       for (n =3D 0; n < 4; n++)
                index_array[n] =3D acl_start_next_trie(&flows, parms, n=
, ctx);
-       }

        /* Check for any matches. */
        acl_match_check_x4(0, ctx, parms, &flows, index_array);

You are receiving this mail because:
  • You are the assignee for the bug.
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