Android: How to get kernel logs after kernel panic?

Question

I am using an Android Custom ROM on my device, also with a custom boot.img (custom kernel + cmdline + ramdisk). I now want to be able to view the kernel logs immediately aft

Answer 1

As for me,

cat /proc/last_kmsg 

after reboot (caused by the kernel panic during insmod) does list messages relevant to the crash, like

[  424.909515] Kernel panic - not syncing: Fatal exception
[  424.909606] Backtrace: 
[  424.909790] [] (dump_backtrace+0x0/0x10c) from [] (dump_stack+0x18/0x1c)
[  424.909973]  r6:c5cccf00 r5:00000000 r4:c08505a0 r3:00000000

So you can at least try. I am working with Linux 3.0.31-g4f6d371 on Galaxy Nexus.