if I use a pvops domU kernel version 2.6.32.18 crash works fine. However if I use a pvops domU kernel version 2.6.32.21 I get the error messages: crash: cannot find mfn 874307 (0xd5743) in page index crash: cannot read/find cr3 page Any suggestions as to what is wrong? -Thomas (1) domU information: cat /proc/version Linux version 2.6.32.21-1 (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #1 SMP Tue Sep 7 15:40:55 PDT 2010 cat /proc/cmdline root=UUID=ee471711-e94d-4ff1-973c-e45526adea25 ro crashkernel=384M-2G:64M,2G-:128M iommu=soft swiotlb=force console=hvc0,115200n8 ip=:127.0.255.255::::eth0:dhcp cat /sys/kernel/kexec_crash_loaded 1 xen.cfg is using on_crash = 'coredump-restart' core is generated by executing echo c > /proc/sysrq-trigger on the domU. (2) core file is generated by the domU crash -rw------- 1 root root 2145653832 Sep 9 09:42 /var/xen/dump/xyz/2010-0909-0942.13-xyz.1.core (3) crash information crash-d99 /boot/vmlinux-2.6.32.21-1 /var/xen/dump/xyz/2010-0909-0942.13-xyz.1.core crash 5.0.7 ... crash: /var/xen/dump/xyz/2010-0909-0942.13-xyz.1.core: not a netdump ELF dumpfile crash: /var/xen/dump/xyz/2010-0909-0942.13-xyz.1.core: not a kdump ELF dumpfile flags: 109 (XENDUMP_LOCAL|XC_CORE_ELF|XC_CORE_P2M_CREATE) xfd: 3 page_size: 4096 ofp: 0 page: 1d67c70 panic_pc: 0 panic_sp: 0 accesses: 0 cache_hits: 0 last_pfn: -1 redundant: 0 poc[5000]: 1d68c80 (none used) xc_save: nr_pfns: 0 (0x0) vmconfig_size: 0 (0x0) vmconfig_buf: 0 p2m_frame_list: 0 (none) pfns_not: 0 pfns_not_offset: 0 vcpu_ctxt_offset: 0 shared_info_page_offset: 0 region_pfn_type: 0 batch_count: 0 batch_offsets: 0 (none) ia64_version: 0 ia64_page_offsets: 0 (none) xc_core: header: xch_magic: f00febed (XC_CORE_MAGIC) xch_nr_vcpus: 7 xch_nr_pages: 521792 (0x7f640) xch_ctxt_offset: 1896 (0x768) xch_index_offset: 2137305088 (0x7f64b000) xch_pages_offset: 45056 (0xb000) elf_class: ELFCLASS64 elf_strtab_offset: 2145653760 (0x7fe41400) format_version: 0000000000000001 shared_info_offset: 38072 (0x94b8) elf_index_pfn[128]: 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 0:-1 last_batch: index: 0 (0 - 0) accesses: 0 duplicates: 0 elf32: 0 elf64: 1d67040 p2m_frames: 0 p2m_frame_index_list: Elf64_Ehdr: e_ident: \177ELF e_ident[EI_CLASS]: 2 (ELFCLASS64) e_ident[EI_DATA]: 1 (ELFDATA2LSB) e_ident[EI_VERSION]: 1 (EV_CURRENT) e_ident[EI_OSABI]: 0 (ELFOSABI_SYSV) e_ident[EI_ABIVERSION]: 1 e_type: 4 (ET_CORE) e_machine: 62 (EM_X86_64) e_version: 1 (EV_CURRENT) e_entry: 0 e_phoff: 0 e_shoff: 40 e_flags: 0 e_ehsize: 40 e_phentsize: 38 e_phnum: 0 e_shentsize: 40 e_shnum: 7 e_shstrndx: 1 Elf64_Shdr: sh_name: 0 "" sh_type: 0 (SHT_NULL) sh_flags: 0 sh_addr: 0 sh_offset: 0 sh_size: 0 sh_link: 0 sh_info: 0 sh_addralign: 0 sh_entsize: 0 Elf64_Shdr: sh_name: 1 ".shstrtab" sh_type: 3 (SHT_STRTAB) sh_flags: 0 sh_addr: 0 sh_offset: 7fe41400 sh_size: 48 sh_link: 0 sh_info: 0 sh_addralign: 0 sh_entsize: 0 .shstrtab .note.Xen .xen_prstatus .xen_shared_info .xen_pages .xen_p2m Elf64_Shdr: sh_name: b ".note.Xen" sh_type: 7 (SHT_NOTE) sh_flags: 0 sh_addr: 0 sh_offset: 200 sh_size: 568 sh_link: 0 sh_info: 0 sh_addralign: 0 sh_entsize: 0 namesz: 4 descz: 0 type: 2000000 (XEN_ELFNOTE_DUMPCORE_NONE) name: Xen (empty) namesz: 4 descz: 32 type: 2000001 (XEN_ELFNOTE_DUMPCORE_HEADER) name: Xen 00000000f00febed 0000000000000007 000000000007f640 0000000000001000 namesz: 4 descz: 1280 type: 2000002 (XEN_ELFNOTE_DUMPCORE_XEN_VERSION) 0000000000000004 0000000000000000 ff003463722d312e 2400000000000008 7372657620636367 2e342e34206e6f69 746e756255282033 2d332e342e342075 3575746e75627534 ffff82c480002029 0000000000000001 0000000001aa0660 ffff006567646562 0000000000000001 006d6f632e69736c ffff880000000001 ffff82c480367c0e ffff82c400000100 20677541206e7553 34343a3930203120 205444502039323a ffff820030313032 2d302e332d6e6578 782034365f363878 782d302e332d6e65 68207032335f3638 782d302e332d6d76 76682032335f3638 38782d302e332d6d 7668207032335f36 38782d302e332d6d 0000002034365f36 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 616c696176616e75 7820343600656c62 782d302e332d6e65 68207032335f3638 782d302e332d6d76 76682032335f3638 38782d302e332d6d 7668207032335f36 ffff800000000000 0000000000001000 namesz: 4 descz: 8 type: 2000003 (XEN_ELFNOTE_DUMPCORE_FORMAT_VERSION) name: Xen 0000000000000001 Elf64_Shdr: sh_type: 1 (SHT_PROGBITS) sh_flags: 0 sh_addr: 0 sh_offset: 768 sh_size: 8d50 sh_link: 0 sh_info: 0 sh_addralign: 8 sh_entsize: 1430 Elf64_Shdr: sh_name: 23 ".xen_shared_info" sh_type: 1 (SHT_PROGBITS) sh_flags: 0 sh_addr: 0 sh_offset: 94b8 sh_size: 1000 sh_link: 0 sh_info: 0 sh_addralign: 8 sh_entsize: 1000 Elf64_Shdr: sh_name: 34 ".xen_pages" sh_type: 1 (SHT_PROGBITS) sh_flags: 0 sh_addr: 0 sh_offset: b000 sh_size: 7f640000 sh_link: 0 sh_info: 0 sh_addralign: 1000 sh_entsize: 1000 Elf64_Shdr: sh_name: 3f ".xen_p2m" sh_type: 1 (SHT_PROGBITS) sh_flags: 0 sh_addr: 0 sh_offset: 7f64b000 sh_size: 7f6400 sh_link: 0 sh_info: 0 sh_addralign: 8 sh_entsize: 10 crash: pv_init_ops exists: ARCH_PVOPS gdb /boot/vmlinux-2.6.32.21-1 GNU gdb (GDB) 7.0 Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu"... GETBUF(248 -> 0) GETBUF(1500 -> 1) FREEBUF(1) FREEBUF(0) <readmem: ffffffff81614800, KVADDR, "kernel_config_data", 32768, (ROE), 2fed090> addr: ffffffff81614800 paddr: 1614800 cnt: 2048 GETBUF(248 -> 0) FREEBUF(0) MEMBER_OFFSET(vcpu_guest_context, ctrlreg): 4984 ctrlreg[0]: 80050033 ctrlreg[1]: d5742000 ctrlreg[2]: 0 ctrlreg[3]: d5743000 ctrlreg[4]: 2660 ctrlreg[5]: 0 ctrlreg[6]: 0 ctrlreg[7]: 0 crash: cannot find mfn 874307 (0xd5743) in page index crash: cannot read/find cr3 page