The Linux kernel boot is stuck at a certain point, how to debug it?

[cirosantilli2]

https://www.mail-archive.com/gem5-users@gem5.org/msg15333.html

• easiest way: find the most similar possible working configuration, and compare what is different between them, and bisect that: https://github.com/cirosantilli/linux-kernel-module-cheat/tree/02b433e3ee8edb129c1e286a37ed2c8a8170fefe#gem5 contains a few.
• gdb step debug gem5
• gdb step debug the Linux kernel through gem5 to find which lines are repeating: https://github.com/cirosantilli/linux-kernel-module-cheat/tree/02b433e3ee8edb129c1e286a37ed2c8a8170fefe#gdb
• trace the Linux kernel execution to find out where the repetition started: https://github.com/cirosantilli/linux-kernel-module-cheat/tree/02b433e3ee8edb129c1e286a37ed2c8a8170fefe#tracing TODO: port the line tracing to gem5 as well as QEMU. Should be trivial.