Re: [Crash-utility] crash: page excluded: kernel virtual address: ffffffff81e3da50 type: "page_offset_base"

Hi Dave,   Because I didn't subscribe the list, so please CC me when reply:) My colleague help to forward your reply to me, so I decide to reply directly in order to keep this mail in the thread other than new a thread. On 11/23/2017 02:04 PM, Fei, Jie/费 杰 wrote: Sorry, I am to new dump/crash area. I am using kdump to create the vmcore. Actually, I did solve this issue by add "nokaslr" to kernel parameter when I used the built-in crash of Fedora. But when turn to the compiled version of my own, that solution don't work. here is the output of `crash -d8`: $ sudo ./crash -d8 /var/crash/127.0.0.1-2017-11-22-18\:21\:42/vmcore ../linux/vmlinux crash 7.2.0++ Copyright (C) 2002-2017 Red Hat, Inc. Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation Copyright (C) 1999-2006 Hewlett-Packard Co Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. Copyright (C) 2005, 2011 NEC Corporation Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc. Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. This program is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Enter "help copying" to see the conditions. This program has absolutely no warranty. Enter "help warranty" for details. compressed kdump: header->utsname.machine: x86_64 compressed kdump: memory bitmap offset: 2000 diskdump_data: filename: /var/crash/127.0.0.1-2017-11-22-18:21:42/vmcore flags: 6 (KDUMP_CMPRS_LOCAL|ERROR_EXCLUDED) dfd: 3 ofp: 0 machine_type: 62 (EM_X86_64) header: 1013930 signature: "KDUMP " header_version: 6 utsname: sysname: Linux nodename: IAAS1 release: 4.14.0 version: #1 SMP Wed Nov 15 10:32:46 CST 2017 machine: x86_64 domainname: (none) timestamp: tv_sec: 5a154fac tv_usec: 0 status: 2 (DUMP_DH_COMPRESSED_LZO) block_size: 4096 sub_hdr_size: 1 bitmap_blocks: 80 max_mapnr: 1310208 total_ram_blocks: 0 device_blocks: 0 written_blocks: 0 current_cpu: 0 nr_cpus: 4 tasks[nr_cpus]: 0 0 0 0 sub_header: 0 (n/a) sub_header_kdump: 1014940 phys_base: 0 dump_level: 31 (0x1f) (DUMP_EXCLUDE_ZERO|DUMP_EXCLUDE_CACHE|DUMP_EXCLUDE_CACHE_PRI|DUMP_EXCLUDE_USER_DATA|DUMP_EXCLUDE_FREE) split: 0 start_pfn: (unused) end_pfn: (unused) offset_vmcoreinfo: 5648 (0x1610) size_vmcoreinfo: 1883 (0x75b) OSRELEASE=4.14.0 PAGESIZE=4096 SYMBOL(init_uts_ns)=ffffffff81e10280 SYMBOL(node_online_map)=ffffffff82030e80 SYMBOL(swapper_pg_dir)=ffffffff81e09000 SYMBOL(_stext)=ffffffff81000000 SYMBOL(vmap_area_list)=ffffffff81efc470 SYMBOL(mem_section)=ffffffff82401dc0 LENGTH(mem_section)=2048 SIZE(mem_section)=16 OFFSET(mem_section.section_mem_map)=0 SIZE(page)=64 SIZE(pglist_data)=172864 SIZE(zone)=1664 SIZE(free_area)=104 SIZE(list_head)=16 SIZE(nodemask_t)=128 OFFSET(page.flags)=0 OFFSET(page._refcount)=28 OFFSET(page.mapping)=8 OFFSET(page.lru)=32 OFFSET(page._mapcount)=24 OFFSET(page.private)=48 OFFSET(page.compound_dtor)=40 OFFSET(page.compound_order)=44 OFFSET(page.compound_head)=32 OFFSET(pglist_data.node_zones)=0 OFFSET(pglist_data.nr_zones)=172192 OFFSET(pglist_data.node_start_pfn)=172200 OFFSET(pglist_data.node_spanned_pages)=172216 OFFSET(pglist_data.node_id)=172224 OFFSET(zone.free_area)=192 OFFSET(zone.vm_stat)=1472 OFFSET(zone.spanned_pages)=112 OFFSET(free_area.free_list)=0 OFFSET(list_head.next)=0 OFFSET(list_head.prev)=8 OFFSET(vmap_area.va_start)=0 OFFSET(vmap_area.list)=48 LENGTH(zone.free_area)=11 SYMBOL(log_buf)=ffffffff81e58480 SYMBOL(log_buf_len)=ffffffff81e5847c SYMBOL(log_first_idx)=ffffffff823340f8 SYMBOL(clear_idx)=ffffffff823340cc SYMBOL(log_next_idx)=ffffffff823340e8 SIZE(printk_log)=16 OFFSET(printk_log.ts_nsec)=0 OFFSET(printk_log.len)=8 OFFSET(printk_log.text_len)=10 OFFSET(printk_log.dict_len)=12 LENGTH(free_area.free_list)=6 NUMBER(NR_FREE_PAGES)=0 NUMBER(PG_lru)=5 NUMBER(PG_private)=12 NUMBER(PG_swapcache)=9 NUMBER(PG_slab)=8 NUMBER(PG_hwpoison)=22 NUMBER(PG_head_mask)=32768 NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE)=-128 NUMBER(HUGETLB_PAGE_DTOR)=2 NUMBER(phys_base)=0 SYMBOL(init_top_pgt)=ffffffff81e09000 SYMBOL(node_data)=ffffffff8202c6c0 LENGTH(node_data)=1024 KERNELOFFSET=0 NUMBER(KERNEL_IMAGE_SIZE)=1073741824 CRASHTIME=1511346092 offset_note: 4200 (0x1068) size_note: 3332 (0xd04) notes_buf: 1015950 num_prstatus_notes: 4 notes[0]: 1015950 (NT_PRSTATUS) si.signo: 0 si.code: 0 si.errno: 0 cursig: 0 sigpend: 0 sighold: 0 pid: 114 ppid: 0 pgrp: 0 sid:0 utime: 0.000000 stime: 0.000000 cutime: 0.000000 cstime: 0.000000 ORIG_RAX: ffffffffffffffff fpvalid: 0 R15: ffffffff82445b80 R14: ffffffff822f3422 R13: 0000000000000020 R12: 00000000000026f5 RBP: ffffc90000adbce0 RBX: ffffffff82445b80 R11: ffffffff822f342d R10: 0000000000000000 R9: 000000000000000f R8: 0000000000000000 RAX: 000000799065724b RCX: 0000007990656c1b RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000cdd RIP: ffffffff8188600f RFLAGS: 0000000000000097 RSP: ffffc90000adbce0 FS_BASE: 0000000000000000 GS_BASE: 0000000000000000 CS: 0010 SS: 0018 DS: 0000 ES: 0000 FS: 0000 GS: 0000 notes[1]: 1015ab4 (NT_PRSTATUS) si.signo: 0 si.code: 0 si.errno: 0 cursig: 0 sigpend: 0 sighold: 0 pid: 2030 ppid: 0 pgrp: 0 sid:0 utime: 0.000000 stime: 0.000000 cutime: 0.000000 cstime: 0.000000 ORIG_RAX: ffffffffffffffff fpvalid: 0 R15: ffff880131999500 R14: ffffffff81f76fa0 R13: 0000000000000000 R12: 0000000000000007 RBP: ffffc90001dabdd8 RBX: 0000000000000063 R11: ffffffff822f342d R10: 0000000000000001 R9: 0000000000000007 R8: 00000000000002d9 RAX: 000000000000000f RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff88013fa8e138 RDI: 0000000000000063 RIP: ffffffff81532ad6 RFLAGS: 0000000000010282 RSP: ffffc90001dabdd8 FS_BASE: 00007fe58251fb80 GS_BASE: 0000000000000000 CS: 0010 SS: 0018 DS: 0000 ES: 0000 FS: 0000 GS: 0000 notes[2]: 1015c18 (NT_PRSTATUS) si.signo: 0 si.code: 0 si.errno: 0 cursig: 0 sigpend: 0 sighold: 0 pid: 0 ppid: 0 pgrp: 0 sid:0 utime: 0.000000 stime: 0.000000 cutime: 0.000000 cstime: 0.000000 ORIG_RAX: ffffffffffffffff fpvalid: 0 R15: ffffffff81f65618 R14: 0000000000000020 R13: 0000000000000004 R12: 0000000000000003 RBP: ffffc900006a3e60 RBX: 0000000000000008 R11: 000000000000298b R10: ffffc900006a3e40 R9: 0000000000000018 R8: 00000000000054a2 RAX: 0000000000000020 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff81f65480 RDI: 0000000000000002 RIP: ffffffff81895ddc RFLAGS: 0000000000000046 RSP: ffffc900006a3e40 FS_BASE: 0000000000000000 GS_BASE: 0000000000000000 CS: 0010 SS: 0018 DS: 0000 ES: 0000 FS: 0000 GS: 0000 notes[3]: 1015d7c (NT_PRSTATUS) si.signo: 0 si.code: 0 si.errno: 0 cursig: 0 sigpend: 0 sighold: 0 pid: 0 ppid: 0 pgrp: 0 sid:0 utime: 0.000000 stime: 0.000000 cutime: 0.000000 cstime: 0.000000 ORIG_RAX: ffffffffffffffff fpvalid: 0 R15: ffffffff81f65618 R14: 0000000000000020 R13: 0000000000000004 R12: 0000000000000003 RBP: ffffc900006abe60 RBX: 0000000000000008 R11: 000000000000037e R10: ffffc900006abe40 R9: 0000000000000008 R8: 00000000ffffffff RAX: 0000000000000020 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff81f65480 RDI: 0000000000000003 RIP: ffffffff81895ddc RFLAGS: 0000000000000046 RSP: ffffc900006abe40 FS_BASE: 0000000000000000 GS_BASE: 0000000000000000 CS: 0010 SS: 0018 DS: 0000 ES: 0000 FS: 0000 GS: 0000 snapshot_task: 0 num_qemu_notes: 0 NOTE offsets: 1068 (NT_PRSTATUS) 11cc (NT_PRSTATUS) 1330 (NT_PRSTATUS) 1494 (NT_PRSTATUS) offset_eraseinfo: 0 (0x0) size_eraseinfo: 0 (0x0) start_pfn_64: (unused) end_pfn_64: (unused) max_mapnr_64: 1310208 (0x13fe00) data_offset: 52000 block_size: 4096 block_shift: 12 bitmap: 7f8ff466c010 bitmap_len: 327680 max_mapnr: 1310208 (0x13fe00) dumpable_bitmap: 7f8ff461b010 byte: 0 bit: 0 compressed_page: 10470a0 curbufptr: 0 page_cache_hdr[0]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 1037090 pg_hit_count: 0 page_cache_hdr[1]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 1038090 pg_hit_count: 0 page_cache_hdr[2]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 1039090 pg_hit_count: 0 page_cache_hdr[3]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 103a090 pg_hit_count: 0 page_cache_hdr[4]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 103b090 pg_hit_count: 0 page_cache_hdr[5]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 103c090 pg_hit_count: 0 page_cache_hdr[6]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 103d090 pg_hit_count: 0 page_cache_hdr[7]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 103e090 pg_hit_count: 0 page_cache_hdr[8]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 103f090 pg_hit_count: 0 page_cache_hdr[9]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 1040090 pg_hit_count: 0 page_cache_hdr[10]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 1041090 pg_hit_count: 0 page_cache_hdr[11]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 1042090 pg_hit_count: 0 page_cache_hdr[12]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 1043090 pg_hit_count: 0 page_cache_hdr[13]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 1044090 pg_hit_count: 0 page_cache_hdr[14]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 1045090 pg_hit_count: 0 page_cache_hdr[15]: pg_flags: 0 () pg_addr: 0 pg_bufptr: 1046090 pg_hit_count: 0 page_cache_buf: 1037090 evict_index: 0 evictions: 0 accesses: 0 cached_reads: 0 valid_pages: 1036680 readmem: read_diskdump() crash: pv_init_ops exists: ARCH_PVOPS VMCOREINFO: NUMBER(phys_base): 0 -> 0 gdb ../linux/vmlinux GNU gdb (GDB) 7.6 Copyright (C) 2013 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(288 -> 0) GETBUF(1500 -> 1) FREEBUF(1) FREEBUF(0) <readmem: ffffffff81e3da50, KVADDR, "page_offset_base", 8, (FOE), d83568> <read_diskdump: addr: ffffffff81e3da50 paddr: 1e3da50 cnt: 8> read_diskdump: PAGE_EXCLUDED: paddr/pfn: 1e3da50/1e3d crash: page excluded: kernel virtual address: ffffffff81e3da50 type: "page_offset_base" -- Sincerely, Cao jin