我正在使用 arm64 设备测试崩溃内核映像功能，内核版本为 linux-5.4，现在我通过“echo c > /proc/sysrq-trigger”触发内核崩溃，然后内核会触发空指针崩溃并保存上下文，然后启动第二个内核。现在我看到内核重启而没有任何日志，所以我需要找出内核重启的原因。
控制台日志是：
AP488B:/# echo c > /proc/sysrq-trigger
[04/17/2023 12:41:26.4299] Kernel panic - not syncing: sysrq triggered crash
[04/17/2023 12:41:26.4299] CPU: 1 PID: 8523 Comm: ash Kdump: loaded Tainted: P E 5.4.164 #29
[04/17/2023 12:41:26.4999] Hardware name: Qualcomm Technologies, Inc. IPQ8074/AP-HK02 (DT)
[04/17/2023 12:41:26.6099] Call trace:
[04/17/2023 12:41:26.7099] dump_backtrace+0x0/0x15c
[04/17/2023 12:41:26.7499] show_stack+0x14/0x1c
[04/17/2023 12:41:26.8099] dump_stack+0xb4/0xf8
[04/17/2023 12:41:26.8599] panic+0x154/0x358
[04/17/2023 12:41:26.9199] sysrq_handle_reboot+0x0/0x20
[04/17/2023 12:41:26.9599] __handle_sysrq+0xa0/0x158
[04/17/2023 12:41:27.0299] write_sysrq_trigger+0x98/0xa8
[04/17/2023 12:41:27.0799] proc_reg_write+0x58/0x94
[04/17/2023 12:41:27.1499] __vfs_write+0x18/0x38
[04/17/2023 12:41:27.1999] vfs_write+0xd4/0x18c
[04/17/2023 12:41:27.2599] ksys_write+0x70/0xd8
[04/17/2023 12:41:27.3099] __arm64_sys_write+0x14/0x1c
[04/17/2023 12:41:27.3699] el0_svc_common.constprop.0+0xfc/0x17c
[04/17/2023 12:41:27.4299] el0_svc_handler+0x7c/0x84
[04/17/2023 12:41:27.4999] el0_svc+0x8/0x680
[04/17/2023 12:41:27.5999] SMP: cpu1 stopping secondary CPUs 0,2-3
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Board type: C9124AX
U-Boot DEV 2016.01 (btldr release 38) (Mar 31 2023 - 14:02:16 -0700)