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Wed, 27 May 2026 23:00:34 -0700 (PDT) Date: Wed, 27 May 2026 23:00:34 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a17da02.d07c18fe.1069e4.001a.GAE@google.com> Subject: [moderation/CI] Re: mshv: enable kexec with Hyper-V donated pages and partitions 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 [v1] mshv: enable kexec with Hyper-V donated pages and partitions https://lore.kernel.org/all/20260528004204.1484584-1-jloeser@linux.microsof= t.com * [RFC PATCH 01/20] kho: generalize radix tree APIs * [RFC PATCH 02/20] kho: store incoming radix tree in kho_in * [RFC PATCH 03/20] kho: add a struct for radix callbacks * [RFC PATCH 04/20] kho: add callback for table pages * [RFC PATCH 05/20] kho: add data argument to radix walk callback * [RFC PATCH 06/20] kho: allow early-boot usage of the KHO radix tree * [RFC PATCH 07/20] kho: allow destroying KHO radix tree * [RFC PATCH 08/20] kho: add kho_radix_init_tree() * [RFC PATCH 09/20] memblock: introduce MEMBLOCK_KHO_SCRATCH_EXT * [RFC PATCH 10/20] kho: extended scratch * [RFC PATCH 11/20] kho: return virtual address of mem_map * [RFC PATCH 12/20] mm/hugetlb: make bootmem allocation work with KHO * [RFC PATCH 13/20] kho: add radix tree freeze and del_key() error reportin= g * [RFC PATCH 14/20] kho: Add crash-kernel-safe radix tree presence check * [RFC PATCH 15/20] mshv: Use page tracker to manage MSHV-owned pages and p= reserve with KHO * [RFC PATCH 16/20] mshv: Add debugfs interface to page tracker * [RFC PATCH 17/20] hyperv: Reserve crash MSR P2 for page preservation root= PA * [RFC PATCH 18/20] mshv: Exclude Hyper-V donated pages from crash dump col= lection * [RFC PATCH 19/20] kexec: export kexec_in_progress for modules * [RFC PATCH 20/20] mshv: freeze and vacuum partitions across kexec and found the following issue: kernel build error Full report is available here: https://ci.syzbot.org/series/3ae14a59-1f75-49c7-b968-ba5197b42ec3 *** kernel build error tree: linux-next URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/li= nux-next base: e7d700e14934e68f86338c5610cf2ae76798b663 arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp= 1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/90866729-fbd8-4e80-afc5-b8813f0533f= a/config mm/mm_init.c:2705:2: error: call to undeclared function 'kho_extend_scratch= '; ISO C99 and later do not support implicit function declarations [-Wimpli= cit-function-declaration] *** 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 patch for this bug, please reply with `#syz test` (should be on a separate line). The patch should be attached to the email. Note: arguments like custom git repos and branches are not supported. The email will later be sent to: [akpm@linux-foundation.org bhe@redhat.com bp@alien8.de catalin.marinas@arm.= com dave.hansen@linux.intel.com david@kernel.org decui@microsoft.com graf@a= mazon.com haiyangz@microsoft.com hpa@zytor.com jasonmiu@google.com jbouron@= amazon.com jloeser@linux.microsoft.com kees@kernel.org kexec@lists.infradea= d.org kys@microsoft.com linux-arm-kernel@lists.infradead.org linux-hyperv@v= ger.kernel.org linux-kernel@vger.kernel.org linux-mm@kvack.org longli@micro= soft.com mario.limonciello@amd.com mhklinux@outlook.com mingo@redhat.com mu= chun.song@linux.dev osalvador@suse.de pasha.tatashin@soleen.com piliu@redha= t.com pratyush@kernel.org rafael.j.wysocki@intel.com ran.xiaokai@zte.com.cn= rppt@kernel.org sourabhjain@linux.ibm.com tglx@kernel.org wei.liu@kernel.o= rg will@kernel.org x86@kernel.org] If the report looks fine to you, reply with: #syz upstream If the report is a false positive, reply with #syz invalid