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Sun, 19 Oct 2025 00:02:36 -0700 (PDT) Date: Sun, 19 Oct 2025 00:02:36 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68f48d0c.050a0220.91a22.0436.GAE@google.com> Subject: [moderation/CI] Re: kernel: Introduce multikernel architecture support From: syzbot ci To: syzkaller-upstream-moderation@googlegroups.com Cc: syzbot@lists.linux.dev Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable syzbot ci has tested the following series [v2] kernel: Introduce multikernel architecture support https://lore.kernel.org/all/20251019061631.2235405-1-xiyou.wangcong@gmail.c= om * [RFC Patch v2 01/16] kexec: Introduce multikernel support via kexec * [RFC Patch v2 02/16] x86: Introduce SMP INIT trampoline for multikernel C= PU bootstrap * [RFC Patch v2 03/16] multikernel: Introduce basic multikernel subsystem i= nfrastructure * [RFC Patch v2 04/16] x86: Introduce MULTIKERNEL_VECTOR for inter-kernel c= ommunication * [RFC Patch v2 05/16] x86: Introduce arch_cpu_physical_id() to obtain phys= ical CPU ID * [RFC Patch v2 06/16] multikernel: Introduce physical memory reservation a= nd allocation * [RFC Patch v2 07/16] kexec: Implement dynamic kimage tracking * [RFC Patch v2 08/16] multikernel: Introduce device-tree based kernfs inte= rface * [RFC Patch v2 09/16] kexec: Integrate multikernel instance management wit= h kexec subsystem * [RFC Patch v2 10/16] Documentation: Add multikernel usage * [RFC Patch v2 11/16] kexec: Add /proc/kimage interface for kimage trackin= g * [RFC Patch v2 12/16] multikernel: Introduce per-instance memory allocatio= n interface * [RFC Patch v2 13/16] kernel: Introduce generic multikernel IPI communicat= ion framework * [RFC Patch v2 14/16] multikernel: Add messaging layer for inter-kernel co= mmunication * [RFC Patch v2 15/16] kexec: Integrate multikernel support with kexec_file= _load() * [RFC Patch v2 16/16] multikernel: Integrate Kexec HandOver framework for = DTB preservation and found the following issue: kernel build error Full report is available here: https://ci.syzbot.org/series/5e5f2222-c421-445c-80a8-329e052eb00d *** kernel build error tree: torvalds URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvald= s/linux base: 3a8660878839faadb4f1a6dd72c3179c1df56787 arch: amd64 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp= 1~20250708183702.136), Debian LLD 20.1.8 config: https://ci.syzbot.org/builds/b83eab88-f300-46c6-99d0-d9ce6edaf4e= b/config ld.lld: error: undefined symbol: mk_kimage_alloc ld.lld: error: undefined symbol: mk_kimage_free ld.lld: error: undefined symbol: mk_instance_set_state ld.lld: error: undefined symbol: mk_instance_put ld.lld: error: undefined symbol: mk_instance_find *** 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. The email will later be sent to: [akpm@linux-foundation.org bhe@redhat.com changyuanl@google.com cwang@multi= ernel.io cwang@multikernel.io graf@amazon.com jiri@resnulli.us kexec@lists.= infradead.org linux-kernel@vger.kernel.org linux-mm@kvack.org multikernel@l= ists.linux.dev pasha.tatashin@soleen.com rppt@kernel.org stefanha@redhat.co= m xiyou.wangcong@gmail.com] If the report looks fine to you, reply with: #syz upstream