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Mon, 02 Nov 2026 13:13:08 -0800 (PST) Date: Mon, 02 Nov 2026 13:13:08 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ae8fce4.52c4c7f9.b7231.0004.GAE@google.com> Subject: [moderation/CI] Re: igmp: use copy-on-write RCU updates in ip_mc_source() From: syzbot ci To: syzkaller-upstream-moderation@googlegroups.com Cc: syzbot@lists.linux.dev Content-Type: text/plain; charset="UTF-8" syzbot ci has tested the following series [v1] igmp: use copy-on-write RCU updates in ip_mc_source() https://lore.kernel.org/all/20261102095312.47767-1-18983559317@163.com * [PATCH net v1] igmp: use copy-on-write RCU updates in ip_mc_source() and found the following issue: kernel build error Full report is available here: https://ci.syzbot.org/series/03228251-9799-4e5a-8f98-a8e37eb3c89f *** kernel build error tree: net URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netdev/net.git base: 209108a5456171ab430e25b54b2dfe083455bfb6 arch: amd64 compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 config: https://ci.syzbot.org/builds/a8f5c308-a81f-4c46-8bef-b7d2c3d0efbc/config net/ipv4/igmp.c:2646:1: error: function definition is not allowed here net/ipv4/igmp.c:2737:1: error: function definition is not allowed here net/ipv4/igmp.c:2797:1: error: function definition is not allowed here net/ipv4/igmp.c:2846:1: error: function definition is not allowed here net/ipv4/igmp.c:2893:1: error: function definition is not allowed here net/ipv4/igmp.c:2919:1: error: function definition is not allowed here net/ipv4/igmp.c:2972:1: error: function definition is not allowed here net/ipv4/igmp.c:2994:1: error: function definition is not allowed here net/ipv4/igmp.c:3013:1: error: function definition is not allowed here net/ipv4/igmp.c:3023:1: error: function definition is not allowed here net/ipv4/igmp.c:3029:1: error: function definition is not allowed here net/ipv4/igmp.c:3041:1: error: function definition is not allowed here net/ipv4/igmp.c:3050:1: error: function definition is not allowed here net/ipv4/igmp.c:3089:11: error: use of undeclared identifier 'igmp_mc_seq_start'; did you mean 'mr_mfc_seq_start'? net/ipv4/igmp.c:3090:10: error: use of undeclared identifier 'igmp_mc_seq_next' net/ipv4/igmp.c:3091:10: error: use of undeclared identifier 'igmp_mc_seq_stop'; did you mean 'igmp_mc_seq_ops'? net/ipv4/igmp.c:3092:10: error: use of undeclared identifier 'igmp_mc_seq_show'; did you mean 'igmp_mc_seq_ops'? net/ipv4/igmp.c:3105:1: error: function definition is not allowed here net/ipv4/igmp.c:3134:1: error: function definition is not allowed here *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com. To test a fix for this bug, please reply with `#syz test` (on a separate line) and attach the patch to the email. Notes: - The patch will be applied on top of the tested series (as an incremental fix). - To test a new version of the whole series, please send it directly to syzbot@lists.linux.dev. - Arguments like custom git repos and branches are not supported. The email will later be sent to: [18983559317@163.com davem@davemloft.net dsahern@kernel.org edumazet@google.com horms@kernel.org idosch@nvidia.com kuba@kernel.org linux-kernel@vger.kernel.org netdev@vger.kernel.org pabeni@redhat.com] If the report looks fine to you, reply with: #syz upstream If the report is a false positive, reply with #syz invalid