Re: [Crash-utility] [Question] crash-arm64 cannot determine VA_BITS_ACTUAL for qemu dump-guest-memory

Dear Mantainers, I meet a problem that the latest crash tool built for ARM64cannot load the vmcore genarated by Qemu ARM64 guest OS. 1) The vmcore captured by "dump-guest-memory" cmd in qemu monitor mode: (qemu)  dump-guest-memory vmcore $ file vmcore vmcore: ELF 64-bit LSB core file, ARM aarch64, version 1 (SYSV), SVR4-style My host OS installed qemu-system-aarch64 version is 6.2.0 $ qemu-system-aarch64 --version QEMU emulator version 6.2.0 2) The test for linux version both 5.0 and 5.15 which disable kaslr is NG, but test linux version 4.0 loading vmcore is OK. Here's the error log while crash tool loading linux-5.15 vmcore: $ crash64 vmlinux vmcore crash64 8.0.3++ 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. crash64: cannot determine VA_BITS_ACTUAL 3) It seems crash tool cannot get vabits_actual from vmcore, so I append "vabits_actual=48" to crash cmd: $ crash-arm64 vmlinux vmcore -m vabits_actual=48 The result shows some symbols seek error: crash-arm64: seek error: kernel virtual address: ffff800011769918  type: "possible" WARNING: cannot read cpu_possible_map crash-arm64: seek error: kernel virtual address: ffff800011769958  type: "present" WARNING: cannot read cpu_present_map crash-arm64: seek error: kernel virtual address: ffff800011769938  type: "online" WARNING: cannot read cpu_online_map crash-arm64: seek error: kernel virtual address: ffff800011769978  type: "active" WARNING: cannot read cpu_active_map crash-arm64: seek error: kernel virtual address: ffff800011936390  type: "shadow_timekeeper xtime_sec" xtime timespec.tv_sec: 55fcd060743a: Thu Feb 11 04:14:50 CST 2997960 crash-arm64: seek error: kernel virtual address: ffff800011771268  type: "init_uts_ns" The attachment is the detailed log which append "-d 1" to crash cmd. Could you please help this?