使用 crash 实用工具调试

./crash <PATH>/vmlinux <PATH>/DDRCS0_0.BIN@0x80000000,<PATH>/DDRCS1_0.BIN@0x100000000,<PATH>/DDRCS1_1.BIN@0x180000000 -m vabits_actual=48 -m max_physmem_bits=48 -m kimage_voffset=0xffffb40bbf600000  --kaslr=0x340c3d320000

crash 8.0.4
Copyright (C) 2002-2022  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, 2020-2022  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.

NOTE: setting vabits_actual to: 48

NOTE: setting max_physmem_bits to: 48
GNU gdb (GDB) 10.2
Copyright (C) 2021 Free Software Foundation, Inc.
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Type "show copying" and "show warranty" for details.
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WARNING: cpu 0: cannot find NT_PRSTATUS note
WARNING: cpu 1: cannot find NT_PRSTATUS note
WARNING: cpu 2: cannot find NT_PRSTATUS note
WARNING: cpu 3: cannot find NT_PRSTATUS note
WARNING: cpu 4: cannot find NT_PRSTATUS note
WARNING: cpu 5: cannot find NT_PRSTATUS note
WARNING: cpu 6: cannot find NT_PRSTATUS note
WARNING: cpu 7: cannot find NT_PRSTATUS note
      KERNEL: /test/vmlinux  [TAINTED]
   DUMPFILES: /var/tmp/ramdump_elf_PBaLfj [temporary ELF header]
            /test/DDRCS0_0.BIN
            /test/DDRCS1_0.BIN
            /test/DDRCS1_1.BIN
      CPUS: 8 [OFFLINE: 7]
      DATE: Sun Jan  6 05:30:34 +0530 1980
      UPTIME: 00:00:48
LOAD AVERAGE: 1.60, 0.51, 0.18
      TASKS: 532
   RELEASE: 6.6.17-debug
   VERSION: #1 SMP PREEMPT Mon Mar 25 04:52:52 UTC 2024
   MACHINE: aarch64  (unknown Mhz)
      MEMORY: 5.5 GB
      PANIC: "Kernel panic - not syncing: sysrq triggered crash"
         PID: 1419
   COMMAND: "sh"
      TASK: ffff1756f61ea000  [THREAD_INFO: ffff1756f61ea000]
         CPU: 0
      STATE: TASK_RUNNING (PANIC)

crash> man

*              files          mod            sbitmapq       union
alias          foreach        mount          search         vm
ascii          fuser          net            set            vtop
bpf            gdb            p              sig            waitq
bt             help           ps             struct         whatis
btop           ipcs           pte            swap           wr
dev            irq            ptob           sym            q
dis            kmem           ptov           sys
eval           list           rd             task
exit           log            repeat         timer
extend         mach           runq           tree

crash version: 8.0.4    gdb version: 10.2
For help on any command above, enter "help <command>".
For help on input options, enter "help input".
For help on output options, enter "help output".

crash> log

[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x412fd050]
[    0.000000] Linux version 6.6.17-debug (oe-user@oe-host) (aarch64-qcom-linux-gcc (GCC) 11.4.0, GNU ld (GNU Binutils) 2.38.20220708) #1 SMP PREEMPT Mon Mar 25 04:52:52 UTC 2024
[    0.000000] KASLR enabled
[    0.000000] Machine model: Qualcomm Technologies, Inc. Robotics RB3gen2 addons vision mezz platform
[    0.000000] efi: EFI v2.7 by Qualcomm Technologies, Inc.
[    0.000000] efi: MEMATTR=0x9ccf6018 INITRD=0x9cceaf18 RNG=0x9cce3018 MEMRESERVE=0x9ccea818
[    0.000000] random: crng init done
[    0.000000] Reserved memory: created CMA memory pool at 0x00000000fd000000, size 12 MiB
[    0.000000] OF: reserved mem: initialized node adsp-heap, compatible id shared-dma-pool

crash> p memdump

memdump = $1 = {
table_phys = 4110417920,
table = 0xffff80008087d000
}