[Crash-utility] Re: crash: seek error: kernel virtual address: ffffffff8292c360 type: "page_offset_base"

Hi Crash-utility folks, Recently, I am using crash to debug a live system. When I execute the crash, it cannot enter the crash cmd shell, it was broken by crash seek error. My kernel turned on the CONFIG_RANDOMIZE_BASE, and I added the kaslr=auto parameter to crash. If I disable the CONFIG_RANDOMIZE_BASE, the issue has gone. Could you please help to check if any config/parameter I was missing? Thanks. The following is my system information: crash version: 8.0.6 kernel version: 6.1.118 Host system: qemux86-64 Here is the full log with -d: root@intel-x86-64:/boot# crash -S /boot/vmlinux-6.1.118-yocto-standard /proc/kcore -d10 --kaslr=auto

crash 8.0.6 Copyright (C) 2002-2025  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, 2020-2024  NEC Corporation Copyright (C) 1999, 2002, 2007  Silicon Graphics, Inc. Copyright (C) 1999, 2000, 2001, 2002  Mission Critical Linux, Inc. Copyright (C) 2015, 2021  VMware, 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. get_live_memory_source: /proc/kcore proc_kcore_data:             flags: 500 (KCORE_LOCAL|KCORE_ELF64)         segments: 10       elf_header: 56471f1eb9c0       header_size: 12324           notes64: 56471f1eba00           load64: 56471f1eba38           notes32: 0           load32: 0       vmcoreinfo: 0   size_vmcoreinfo: 0   Elf64_Phdr:         p_type: 4 (PT_NOTE)         p_flags: 0       p_offset: 2a8         p_vaddr: 0         p_paddr: 0       p_filesz: 11644         p_memsz: 0         p_align: 0   Elf64_Phdr:         p_type: 1 (PT_LOAD)         p_flags: 7       p_offset: 7fffaa404000         p_vaddr: ffffffffaa400000         p_paddr: b8600000       p_filesz: 33751040         p_memsz: 33751040         p_align: 4096   Elf64_Phdr:         p_type: 1 (PT_LOAD)         p_flags: 7       p_offset: 286600004000         p_vaddr: ffffa86600000000         p_paddr: ffffffffffffffff       p_filesz: 35184372088831         p_memsz: 35184372088831         p_align: 4096   Elf64_Phdr:         p_type: 1 (PT_LOAD)         p_flags: 7       p_offset: 7fffc0004000         p_vaddr: ffffffffc0000000         p_paddr: ffffffffffffffff       p_filesz: 1056964608         p_memsz: 1056964608         p_align: 4096   Elf64_Phdr:         p_type: 1 (PT_LOAD)         p_flags: 7       p_offset: 126ac0005000         p_vaddr: ffff926ac0001000         p_paddr: 1000       p_filesz: 647168         p_memsz: 647168         p_align: 4096   Elf64_Phdr:         p_type: 1 (PT_LOAD)         p_flags: 7       p_offset: 4d8880004000         p_vaddr: ffffcd8880000000         p_paddr: ffffffffffffffff       p_filesz: 12288         p_memsz: 12288         p_align: 4096   Elf64_Phdr:         p_type: 1 (PT_LOAD)         p_flags: 7       p_offset: 126ac0104000         p_vaddr: ffff926ac0100000         p_paddr: 100000       p_filesz: 12902400         p_memsz: 12902400         p_align: 4096   Elf64_Phdr:         p_type: 1 (PT_LOAD)         p_flags: 7       p_offset: 4d8880008000         p_vaddr: ffffcd8880004000         p_paddr: ffffffffffffffff       p_filesz: 204800         p_memsz: 204800         p_align: 4096   Elf64_Phdr:         p_type: 1 (PT_LOAD)         p_flags: 7       p_offset: 126ac0d53000         p_vaddr: ffff926ac0d4f000         p_paddr: d4f000       p_filesz: 3207118848         p_memsz: 3207118848         p_align: 4096   Elf64_Phdr:         p_type: 1 (PT_LOAD)         p_flags: 7       p_offset: 126bc0004000         p_vaddr: ffff926bc0000000         p_paddr: 100000000       p_filesz: 4294967296         p_memsz: 4294967296         p_align: 4096   Elf64_Phdr:         p_type: 1 (PT_LOAD)         p_flags: 7       p_offset: 4d8884004000         p_vaddr: ffffcd8884000000         p_paddr: ffffffffffffffff       p_filesz: 67108864         p_memsz: 67108864         p_align: 4096   Elf64_Nhdr:       n_namesz: 5 ("CORE")       n_descsz: 336         n_type: 1 (NT_PRSTATUS)   Elf64_Nhdr:       n_namesz: 5 ("CORE")       n_descsz: 136         n_type: 3 (NT_PRPSINFO)   Elf64_Nhdr:       n_namesz: 5 ("CORE")       n_descsz: 7808         n_type: 4 (NT_TASKSTRUCT)   Elf64_Nhdr:       n_namesz: 11 ("VMCOREINFO")       n_descsz: 3279         n_type: 0 (unknown)       OSRELEASE=6.1.118-yocto-standard       BUILD-ID=1400000003000000474e5500a343709706409b9c       PAGESIZE=4096       SYMBOL(init_uts_ns)=ffffffffac037a80       OFFSET(uts_namespace.name)=0       SYMBOL(node_online_map)=ffffffffac06d3e8       SYMBOL(swapper_pg_dir)=ffffffffabe0a000       SYMBOL(_stext)=ffffffffaa400000       SYMBOL(vmap_area_list)=ffffffffabf12fb0       SYMBOL(mem_section)=ffff926cbfff5000       LENGTH(mem_section)=2048       SIZE(mem_section)=16       OFFSET(mem_section.section_mem_map)=0       NUMBER(SECTION_SIZE_BITS)=27       NUMBER(MAX_PHYSMEM_BITS)=46       SIZE(page)=64       SIZE(pglist_data)=15616       SIZE(zone)=1600       SIZE(free_area)=104       SIZE(list_head)=16       SIZE(nodemask_t)=8       OFFSET(page.flags)=0       OFFSET(page._refcount)=52       OFFSET(page.mapping)=24       OFFSET(page.lru)=8       OFFSET(page._mapcount)=48       OFFSET(page.private)=40       OFFSET(page.compound_dtor)=16       OFFSET(page.compound_order)=17       OFFSET(page.compound_head)=8       OFFSET(pglist_data.node_zones)=0       OFFSET(pglist_data.nr_zones)=14624       OFFSET(pglist_data.node_start_pfn)=14632       OFFSET(pglist_data.node_spanned_pages)=14648       OFFSET(pglist_data.node_id)=14656       OFFSET(zone.free_area)=192       OFFSET(zone.vm_stat)=1472       OFFSET(zone.spanned_pages)=136       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)=40       LENGTH(zone.free_area)=11       SYMBOL(prb)=ffffffffabe647d8       SYMBOL(printk_rb_static)=ffffffffabe647e0       SYMBOL(clear_seq)=ffffffffac307f20       SIZE(printk_ringbuffer)=88       OFFSET(printk_ringbuffer.desc_ring)=0       OFFSET(printk_ringbuffer.text_data_ring)=48       OFFSET(printk_ringbuffer.fail)=80       SIZE(prb_desc_ring)=48       OFFSET(prb_desc_ring.count_bits)=0       OFFSET(prb_desc_ring.descs)=8       OFFSET(prb_desc_ring.infos)=16       OFFSET(prb_desc_ring.head_id)=24       OFFSET(prb_desc_ring.tail_id)=32       SIZE(prb_desc)=24       OFFSET(prb_desc.state_var)=0       OFFSET(prb_desc.text_blk_lpos)=8       SIZE(prb_data_blk_lpos)=16       OFFSET(prb_data_blk_lpos.begin)=0       OFFSET(prb_data_blk_lpos.next)=8       SIZE(printk_info)=88       OFFSET(printk_info.seq)=0       OFFSET(printk_info.ts_nsec)=8       OFFSET(printk_info.text_len)=16       OFFSET(printk_info.caller_id)=20       OFFSET(printk_info.dev_info)=24       SIZE(dev_printk_info)=64       OFFSET(dev_printk_info.subsystem)=0       LENGTH(printk_info_subsystem)=16       OFFSET(dev_printk_info.device)=16       LENGTH(printk_info_device)=48       SIZE(prb_data_ring)=32       OFFSET(prb_data_ring.size_bits)=0       OFFSET(prb_data_ring.data)=8       OFFSET(prb_data_ring.head_lpos)=16       OFFSET(prb_data_ring.tail_lpos)=24       SIZE(atomic_long_t)=8       OFFSET(atomic_long_t.counter)=0       SIZE(latched_seq)=24       OFFSET(latched_seq.val)=8       LENGTH(free_area.free_list)=6       NUMBER(NR_FREE_PAGES)=0       NUMBER(PG_lru)=4       NUMBER(PG_private)=13       NUMBER(PG_swapcache)=10       NUMBER(PG_swapbacked)=19       NUMBER(PG_slab)=9       NUMBER(PG_hwpoison)=23       NUMBER(PG_head_mask)=65536       NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE)=-129       NUMBER(HUGETLB_PAGE_DTOR)=2       NUMBER(PAGE_OFFLINE_MAPCOUNT_VALUE)=-257       SYMBOL(kallsyms_names)=ffffffffaba0f7d8       SYMBOL(kallsyms_num_syms)=ffffffffaba0f7d0       SYMBOL(kallsyms_token_table)=ffffffffabbf5400       SYMBOL(kallsyms_token_index)=ffffffffabbf5788       SYMBOL(kallsyms_offsets)=ffffffffab9984f8       SYMBOL(kallsyms_relative_base)=ffffffffaba0f7c8       NUMBER(phys_base)=2384461824       SYMBOL(init_top_pgt)=ffffffffabe0a000       NUMBER(pgtable_l5_enabled)=0       SYMBOL(node_data)=ffffffffac06c3a0       LENGTH(node_data)=64       KERNELOFFSET=29400000       NUMBER(KERNEL_IMAGE_SIZE)=1073741824       NUMBER(sme_mask)=0 readmem: read_proc_kcore() -> /proc/kcore VMCOREINFO: NUMBER(phys_base): 2384461824 -> 8e200000 gdb /boot/vmlinux-6.1.118-yocto-standard GNU gdb (GDB) 10.2 Copyright (C) 2021 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-wrs-linux". Type "show configuration" for configuration details. Find the GDB manual and other documentation resources online at:     <http://www.gnu.org/software/gdb/documentation/>;. For help, type "help". Type "apropos word" to search for commands related to "word"... GETBUF(344 -> 0)   GETBUF(1500 -> 1)   FREEBUF(1) FREEBUF(0) <readmem: ffffffff8292c360, KVADDR, "page_offset_base", 8, (FOE|Q), 56471ef799c8> <read_proc_kcore: addr: ffffffff8292c360 paddr: 90b2c360 cnt: 8> crash: seek error: kernel virtual address: ffffffff8292c360  type: "page_offset_base" -- Crash-utility mailing list -- devel(a)lists.crash-utility.osci.io To unsubscribe send an email to devel-leave(a)lists.crash-utility.osci.io https://${domain_name}/admin/lists/devel.lists.crash-utility.osci.io/ Contribution Guidelines: https://github.com/crash-utility/crash/wiki