[Crash-utility] crash on arm64
Dave Anderson
anderson at redhat.com
Sun Jan 5 16:46:20 UTC 2020
----- Original Message -----
>
>
> ----- Original Message -----
> > Hello
> >
> > I am getting the following error when I use crash on arm64 platform (NXP
> > LS1043A, with 4 A53 cores).
> > crash: read error: kernel virtual address: ffff00007b616100 type:
> > "memory section root table"
> >
> > Additional information is that when I boot the kernel with nokaslr in
> > bootargs, the crash seems to work well.
> >
> > Have any one else seen similar issue?
> >
> > The kernel version is top of mainline with the below patch applied:
> > - arm64/crash_core: Export TCR_EL1.T1SZ in vmcoreinfo
> > (http://lists.infradead.org/pipermail/kexec/2019-November/023962.html)
> >
> > And the crash-utils is from here:
> > https://github.com/crash-utility/crash.git
> > commit 5e975dd8c817ea6aea35e1e15b83c378aee9c136
> > Author: Dave Anderson <anderson at redhat.com>
> > Date: Tue Dec 24 08:43:52 2019 -0500
> >
> > When determining the ARM64 kernel's "vabits_actual" value by reading
> > the new TCR_EL1.T1SZ vmcoreinfo entry, display its value during
> > session initialization only when invoking crash with "-d1" or larger
> > -d debug value.
> > (anderson at redhat.com)
>
> What version of kexec-tools are you using?
Also -- how do things work on the live system, both with and without KASLR?
Dave
>
> Dave
>
> >
> > Logs of crash -d1 are below:
> > nxa19049 at lsv03080:~/data/ups/crash$ ./crash -d1 ../linux/vmlinux
> > ../linux/vmcore
> >
> > crash 7.2.7++
> > Copyright (C) 2002-2019 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.
> >
> > vmcore_data:
> > flags: c0 (KDUMP_LOCAL|KDUMP_ELF64)
> > ndfd: 3
> > ofp: 7fa9998cf620
> > header_size: 8192
> > num_pt_load_segments: 4
> > pt_load_segment[0]:
> > file_offset: 2000
> > phys_start: 82080000
> > phys_end: 839bc000
> > zero_fill: 0
> > pt_load_segment[1]:
> > file_offset: 193e000
> > phys_start: 80000000
> > phys_end: d8000000
> > zero_fill: 0
> > pt_load_segment[2]:
> > file_offset: 5993e000
> > phys_start: fb000000
> > phys_end: fb800000
> > zero_fill: 0
> > pt_load_segment[3]:
> > file_offset: 5a13e000
> > phys_start: fbc00000
> > phys_end: fbe00000
> > zero_fill: 0
> > elf_header: 2724410
> > elf32: 0
> > notes32: 0
> > load32: 0
> > elf64: 2724410
> > notes64: 2724450
> > load64: 2724488
> > sect0_64: 0
> > nt_prstatus: 2725410
> > nt_prpsinfo: 0
> > nt_taskstruct: 0
> > task_struct: 0
> > arch_data1: (unused)
> > arch_data2: (unused)
> > switch_stack: 0
> > page_size: 4096
> > xen_kdump_data: (unused)
> > num_prstatus_notes: 4
> > num_qemu_notes: 0
> > vmcoreinfo: 2725a98
> > size_vmcoreinfo: 1939
> > nt_prstatus_percpu:
> > 0000000002725410 00000000027255ac 0000000002725748 00000000027258e4
> > nt_qemu_percpu:
> > backup_src_start: 0
> > backup_src_size: 0
> > backup_offset: 0
> >
> > 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]: 0
> > e_type: 4 (ET_CORE)
> > e_machine: 183 (EM_AARCH64)
> > e_version: 1 (EV_CURRENT)
> > e_entry: 0
> > e_phoff: 40
> > e_shoff: 0
> > e_flags: 0
> > e_ehsize: 40
> > e_phentsize: 38
> > e_phnum: 5
> > e_shentsize: 0
> > e_shnum: 0
> > e_shstrndx: 0
> > Elf64_Phdr:
> > p_type: 4 (PT_NOTE)
> > p_offset: 4096 (1000)
> > p_vaddr: 0
> > p_paddr: 0
> > p_filesz: 3612 (e1c)
> > p_memsz: 3612 (e1c)
> > p_flags: 0 ()
> > p_align: 0
> > Elf64_Phdr:
> > p_type: 1 (PT_LOAD)
> > p_offset: 8192 (2000)
> > p_vaddr: ffffd3ebfa480000
> > p_paddr: 82080000
> > p_filesz: 26460160 (193c000)
> > p_memsz: 26460160 (193c000)
> > p_flags: 7 (PF_X|PF_W|PF_R)
> > p_align: 0
> > Elf64_Phdr:
> > p_type: 1 (PT_LOAD)
> > p_offset: 26468352 (193e000)
> > p_vaddr: ffff000000000000
> > p_paddr: 80000000
> > p_filesz: 1476395008 (58000000)
> > p_memsz: 1476395008 (58000000)
> > p_flags: 7 (PF_X|PF_W|PF_R)
> > p_align: 0
> > Elf64_Phdr:
> > p_type: 1 (PT_LOAD)
> > p_offset: 1502863360 (5993e000)
> > p_vaddr: ffff00007b000000
> > p_paddr: fb000000
> > p_filesz: 8388608 (800000)
> > p_memsz: 8388608 (800000)
> > p_flags: 7 (PF_X|PF_W|PF_R)
> > p_align: 0
> > Elf64_Phdr:
> > p_type: 1 (PT_LOAD)
> > p_offset: 1511251968 (5a13e000)
> > p_vaddr: ffff00007bc00000
> > p_paddr: fbc00000
> > p_filesz: 2097152 (200000)
> > p_memsz: 2097152 (200000)
> > p_flags: 7 (PF_X|PF_W|PF_R)
> > p_align: 0
> > Elf64_Nhdr:
> > n_namesz: 5 ("CORE")
> > n_descsz: 392
> > n_type: 1 (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
> > X0: 00000000000000e0 X1: ffff00007b5c4d80 X2:
> > ffff
> > 2c147fdf5000
> > X3: 000000000007b688 X4: 0000000000000015 X5:
> > 00ff
> > ffffffffffff
> > X6: 0000000035f70457 X7: 0000000000000000 X8:
> > ffff
> > 00007b5c3e3c
> > X9: 00000000000041b3 X10: ffff00007b5c3e1c X11:
> > 0000
> > 0000000325d3
> > X12: 00000000000325d3 X13: 071c71c71c71c71c X14:
> > 0000
> > 000000000000
> > X15: 0000000000000000 X16: 0000000000000000 X17:
> > 0000
> > 000000000000
> > X18: 0000000000000000 X19: 0000001e69146f40 X20:
> > ffff
> > 000053175800
> > X21: 0000000000000001 X22: ffff00007b5c3b00 X23:
> > 0000
> > 000000000001
> > X24: 0000001e633ee5f0 X25: ffff00007b5c3b00 X26:
> > ffff
> > 000053175800
> > X27: 0000000000000001 X28: 0000000082c16344 X29:
> > ffff
> > d3ebfbb73e50
> > LR: ffffd3ebfadbbab0 SP: ffffd3ebfbb73e50 PC:
> > ffff
> > d3ebfadbbab8
> > PSTATE: 60000005 FPVALID: 00000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 00000000000000e0 ffff00007b5c4d80
> > ffff2c147fdf5000 000000000007b688
> > 0000000000000015 00ffffffffffffff
> > 0000000035f70457 0000000000000000
> > ffff00007b5c3e3c 00000000000041b3
> > ffff00007b5c3e1c 00000000000325d3
> > 00000000000325d3 071c71c71c71c71c
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000001e69146f40
> > ffff000053175800 0000000000000001
> > ffff00007b5c3b00 0000000000000001
> > 0000001e633ee5f0 ffff00007b5c3b00
> > ffff000053175800 0000000000000001
> > 0000000082c16344 ffffd3ebfbb73e50
> > ffffd3ebfadbbab0 ffffd3ebfbb73e50
> > ffffd3ebfadbbab8 0000000060000005
> > 0000000000000000
> > Elf64_Nhdr:
> > n_namesz: 5 ("CORE")
> > n_descsz: 392
> > n_type: 1 (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
> > X0: 00000000000000e0 X1: ffff00007b5dad80 X2:
> > ffff
> > 2c147fe0b000
> > X3: 000000000007b688 X4: 0000000000000015 X5:
> > 00ff
> > ffffffffffff
> > X6: 0000000035f70457 X7: 0000000000000000 X8:
> > ffff
> > 00007b5d9e3c
> > X9: 0000000000000db6 X10: ffff00007b5d9e1c X11:
> > 0000
> > 000000085aa2
> > X12: 0000000000085aa2 X13: 071c71c71c71c71c X14:
> > 0000
> > 000000000000
> > X15: 0000000000000000 X16: 0000000000000000 X17:
> > 0000
> > 000000000000
> > X18: 0000000000000000 X19: 0000001e69147148 X20:
> > ffff
> > 000053176000
> > X21: 0000000000000001 X22: ffff00007b5d9b00 X23:
> > 0000
> > 000000000001
> > X24: 0000001e599e8230 X25: ffff00007b5d9b00 X26:
> > ffff
> > 000053176000
> > X27: 0000000000000001 X28: 0000000000000000 X29:
> > ffff
> > 800010083ec0
> > LR: ffffd3ebfadbbab0 SP: ffff800010083ec0 PC:
> > ffff
> > d3ebfadbbab8
> > PSTATE: 60000005 FPVALID: 00000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 00000000000000e0 ffff00007b5dad80
> > ffff2c147fe0b000 000000000007b688
> > 0000000000000015 00ffffffffffffff
> > 0000000035f70457 0000000000000000
> > ffff00007b5d9e3c 0000000000000db6
> > ffff00007b5d9e1c 0000000000085aa2
> > 0000000000085aa2 071c71c71c71c71c
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000001e69147148
> > ffff000053176000 0000000000000001
> > ffff00007b5d9b00 0000000000000001
> > 0000001e599e8230 ffff00007b5d9b00
> > ffff000053176000 0000000000000001
> > 0000000000000000 ffff800010083ec0
> > ffffd3ebfadbbab0 ffff800010083ec0
> > ffffd3ebfadbbab8 0000000060000005
> > 0000000000000000
> > Elf64_Nhdr:
> > n_namesz: 5 ("CORE")
> > n_descsz: 392
> > n_type: 1 (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
> > X0: 00000000000000e0 X1: ffff00007b5f0d80 X2:
> > ffff
> > 2c147fe21000
> > X3: 000000000007b688 X4: 0000000000000015 X5:
> > 00ff
> > ffffffffffff
> > X6: 0000000035f70457 X7: 0000000000000000 X8:
> > ffff
> > 00007b5efe3c
> > X9: ffff80001008beb0 X10: ffff00007b5efe1c X11:
> > 0000
> > 00000000466e
> > X12: 000000000000466e X13: 071c71c71c71c71c X14:
> > 0000
> > 000000000000
> > X15: 0000000000000000 X16: 0000000000000000 X17:
> > 0000
> > 000000000000
> > X18: 0000000000000000 X19: 0000001e69147148 X20:
> > ffff
> > 000053176800
> > X21: 0000000000000001 X22: ffff00007b5efb00 X23:
> > 0000
> > 000000000001
> > X24: 0000001e68f584b8 X25: ffff00007b5efb00 X26:
> > ffff
> > 000053176800
> > X27: 0000000000000001 X28: 0000000000000000 X29:
> > ffff
> > 80001008bec0
> > LR: ffffd3ebfadbbab0 SP: ffff80001008bec0 PC:
> > ffff
> > d3ebfadbbab8
> > PSTATE: 60000005 FPVALID: 00000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 00000000000000e0 ffff00007b5f0d80
> > ffff2c147fe21000 000000000007b688
> > 0000000000000015 00ffffffffffffff
> > 0000000035f70457 0000000000000000
> > ffff00007b5efe3c ffff80001008beb0
> > ffff00007b5efe1c 000000000000466e
> > 000000000000466e 071c71c71c71c71c
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000001e69147148
> > ffff000053176800 0000000000000001
> > ffff00007b5efb00 0000000000000001
> > 0000001e68f584b8 ffff00007b5efb00
> > ffff000053176800 0000000000000001
> > 0000000000000000 ffff80001008bec0
> > ffffd3ebfadbbab0 ffff80001008bec0
> > ffffd3ebfadbbab8 0000000060000005
> > 0000000000000000
> > Elf64_Nhdr:
> > n_namesz: 5 ("CORE")
> > n_descsz: 392
> > n_type: 1 (NT_PRSTATUS)
> > si.signo: 0 si.code: 0 si.errno: 0
> > cursig: 0 sigpend: 0 sighold: 0
> > pid: 884 ppid: 0 pgrp: 0 sid:0
> > utime: 0.000000 stime: 0.000000
> > cutime: 0.000000 cstime: 0.000000
> > X0: ffff00004de23400 X1: 0000000000000000 X2:
> > ffff
> > 00004f58c600
> > X3: 0000000000000000 X4: ffffd3ebfbb954b8 X5:
> > ffff
> > 00004f58c600
> > X6: 0000000000000001 X7: ffff8000102fbbe0 X8:
> > 0000
> > 000000000146
> > X9: 00000000ffffffd0 X10: ffffd3ebfbb7a120 X11:
> > 0000
> > 000005f5e0ff
> > X12: ffffd3ebfbb90000 X13: ffff8000102fb8f5 X14:
> > ffff
> > 8000902fb8e7
> > X15: ffffd3ebfbb798c8 X16: 0000000000000000 X17:
> > 0000
> > 000000000000
> > X18: ffffffffffffffff X19: ffffd3ebfbb79000 X20:
> > ffff
> > d3ebfbb95000
> > X21: 0000000000000000 X22: ffffd3ebfbd7a000 X23:
> > ffff
> > 8000102fbaf8
> > X24: 0000000000000004 X25: 0000000000000000 X26:
> > ffff
> > d3ebfbce4000
> > X27: 0000000000000000 X28: ffff00004f58c600 X29:
> > ffff
> > 8000102fbab0
> > LR: ffffd3ebfa58ded8 SP: ffff8000102fbab0 PC:
> > ffff
> > d3ebfa58df5c
> > PSTATE: 60000085 FPVALID: 00000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000374 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > 0000000000000000 0000000000000000
> > ffff00004de23400 0000000000000000
> > ffff00004f58c600 0000000000000000
> > ffffd3ebfbb954b8 ffff00004f58c600
> > 0000000000000001 ffff8000102fbbe0
> > 0000000000000146 00000000ffffffd0
> > ffffd3ebfbb7a120 0000000005f5e0ff
> > ffffd3ebfbb90000 ffff8000102fb8f5
> > ffff8000902fb8e7 ffffd3ebfbb798c8
> > 0000000000000000 0000000000000000
> > ffffffffffffffff ffffd3ebfbb79000
> > ffffd3ebfbb95000 0000000000000000
> > ffffd3ebfbd7a000 ffff8000102fbaf8
> > 0000000000000004 0000000000000000
> > ffffd3ebfbce4000 0000000000000000
> > ffff00004f58c600 ffff8000102fbab0
> > ffffd3ebfa58ded8 ffff8000102fbab0
> > ffffd3ebfa58df5c 0000000060000085
> > 0000000000000000
> > Elf64_Nhdr:
> > n_namesz: 11 ("VMCOREINFO")
> > n_descsz: 1939
> > n_type: 0 (unused)
> > OSRELEASE=5.5.0-rc4-00068-gf8631e1
> > PAGESIZE=4096
> > SYMBOL(init_uts_ns)=ffffd3ebfbb81bf8
> > SYMBOL(node_online_map)=ffffd3ebfbb7a3e8
> > SYMBOL(swapper_pg_dir)=ffffd3ebfb67a000
> > SYMBOL(_stext)=ffffd3ebfa481000
> > SYMBOL(vmap_area_list)=ffffd3ebfbb9b258
> > SYMBOL(mem_section)=ffff00007b616100
> > LENGTH(mem_section)=1024
> > SIZE(mem_section)=16
> > OFFSET(mem_section.section_mem_map)=0
> > SIZE(page)=64
> > SIZE(pglist_data)=7936
> > SIZE(zone)=1664
> > 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)=7200
> > OFFSET(pglist_data.node_start_pfn)=7208
> > OFFSET(pglist_data.node_spanned_pages)=7224
> > OFFSET(pglist_data.node_id)=7232
> > 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)=40
> > LENGTH(zone.free_area)=11
> > SYMBOL(log_buf)=ffffd3ebfbb90b40
> > SYMBOL(log_buf_len)=ffffd3ebfbb90b38
> > SYMBOL(log_first_idx)=ffffd3ebfbd5566c
> > SYMBOL(clear_idx)=ffffd3ebfbd55678
> > SYMBOL(log_next_idx)=ffffd3ebfbd55668
> > 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)=4
> > NUMBER(PG_private)=13
> > NUMBER(PG_swapcache)=10
> > NUMBER(PG_swapbacked)=19
> > NUMBER(PG_slab)=9
> > NUMBER(PG_hwpoison)=22
> > NUMBER(PG_head_mask)=65536
> > NUMBER(PAGE_BUDDY_MAPCOUNT_VALUE)=-129
> > NUMBER(HUGETLB_PAGE_DTOR)=2
> > NUMBER(PAGE_OFFLINE_MAPCOUNT_VALUE)=-257
> > NUMBER(VA_BITS)=48
> > NUMBER(kimage_voffset)=0xffffd3eb78400000
> > NUMBER(PHYS_OFFSET)=0xffffafb780000000
> > NUMBER(tcr_el1_t1sz)=0x10
> > KERNELOFFSET=53ebea400000
> > CRASHTIME=1517155176
> >
> > readmem: read_kdump()
> > KASLR:
> > _stext from vmlinux: ffff800010081000
> > _stext from vmcoreinfo: ffffd3ebfa481000
> > relocate: 53ebea400000 (87998116MB)
> > crash: pv_ops exists: ARCH_PVOPS
> > vmcoreinfo : vabits_actual: 48
> > using ffffafb780000000 as phys_offset
> > kimage_voffset: ffffd3eb78400000
> > phys_offset: ffffafb780000000
> > 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 "--host=x86_64-unknown-linux-gnu
> > --target=aarch64-elf-linux"...
> >
> > WARNING: kernel relocated [87998116MB]: patching 135244 gdb minimal_symbol
> > values
> >
> > crash: CONFIG_NR_CPUS: 256
> > crash: CONFIG_HZ: 250
> > crash: # CONFIG_DEBUG_INFO_REDUCED is not set
> > cpu_possible_mask: cpus: 0 1 2 3
> > cpu_present_mask: cpus: 0 1 2 3
> > cpu_online_mask: cpus: 0 1 2 3
> > cpu_active_mask: cpus: 0 1 2 3
> > xtime timespec.tv_sec: 5a6df368: Sun Jan 28 21:29:36 2018
> > utsname:
> > sysname: Linux
> > nodename: localhost
> > release: 5.5.0-rc4-00068-gf8631e1
> > version: #18 SMP PREEMPT Fri Jan 3 19:16:28 IST 2020
> > machine: aarch64
> > domainname: (none)
> > base kernel version: 5.5.0
> > verify_namelist:
> > dumpfile /proc/version:
> > Linux version 5.5.0-rc4-00068-gf8631e1
> > (mailto:nxa19049 at lsv03080.swis.in-blr01.nxp.com) (gcc version 7.3.0 (GCC))
> > #18 SMP PREEMPT Fri Jan 3 19:16:28 IST 2020
> > ../linux/vmlinux:
> > Linux version 5.5.0-rc4-00068-gf8631e1
> > (mailto:nxa19049 at lsv03080.swis.in-blr01.nxp.com) (gcc version 7.3.0 (GCC))
> > #18 SMP PREEMPT Fri Jan 3 19:16:28 IST 2020
> >
> > crash: get_cpus_present: present: 4
> > hypervisor: (undetermined)
> >
> > ikconfig: 2550 valid configs.
> > SECTION_SIZE_BITS: 30
> > CONFIG_ARM64_VA_BITS: 48
> > VA_BITS_ACTUAL: 48
> > (calculated) VA_BITS: 48
> > PAGE_OFFSET: ffff000000000000
> > VA_START: ffff800000000000
> > modules: ffff800008000000 - ffff80000fffffff
> > vmalloc: ffff800010000000 - fffffdffbffeffff
> > kernel image: ffffd3ebfa480000 - ffffd3ebfbdbc000
> > vmemmap: fffffe0000000000 - ffffffffffffffff
> >
> > irq_stack_ptr:
> > type: 1, TYPE_CODE_PTR
> > target_typecode: 8, TYPE_CODE_INT
> > target_length: 8
> > length: 8
> > crash: test msg 2crash: test msg 2 p=7b5b9050 cpunum=0crash: read error:
> > kernel virtual address: ffff00007b5b9050 type: "IRQ stack pointer"
> > crash: test msg 2 p=7b5cf050 cpunum=1crash: read error: kernel virtual
> > address: ffff00007b5cf050 type: "IRQ stack pointer"
> > crash: test msg 2 p=7b5e5050 cpunum=2crash: read error: kernel virtual
> > address: ffff00007b5e5050 type: "IRQ stack pointer"
> > crash: test msg 2 p=7b5fb050 cpunum=3crash: read error: kernel virtual
> > address: ffff00007b5fb050 type: "IRQ stack pointer"
> > crash: builtin stackframe.sp offset differs from kernel version
> > crash: builtin stackframe.pc offset differs from kernel version
> > kernel NR_CPUS: 256
> > PAGESIZE=4096
> > mem_section_size = 8192
> > NR_SECTION_ROOTS = 1024
> > NR_MEM_SECTIONS = 262144
> > SECTIONS_PER_ROOT = 256
> > SECTION_ROOT_MASK = 0xff
> > PAGES_PER_SECTION = 262144
> > crash: read error: kernel virtual address: ffff00007b616100 type: "memory
> > section root table"
> >
> > Regards
> > Poonam
> >
> >
> >
>
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