[Verse 1] Deep beneath the surface where applications dwell Something's gone catastrophic, performance went to hell Time to crack the kernel open, dissect what's running wild Stack traces and crash dumps scattered like breadcrumbs for this child Kernel address sanitizer catches memory abuse Buffer overflows and dangling pointers cut loose Print statements won't save you in this privileged domain Need proper tools and wisdom to diagnose the pain [Chorus] Trace and profile, catch the call Perf records where cycles fall GDB with KGDB mode Ftrace reveals the execution road Memory leaks and deadlock scenes Sysrq magic, intervenes Debug symbols tell the tale When kernel space systems fail [Verse 2] Perf top displays the hottest functions burning bright CPU cycles getting wasted somewhere out of sight Cache misses pile up quickly when algorithms drag Context switches multiply, performance starts to sag Ftrace hooks into functions as they execute their dance Function graph and events give you that deeper glance Ring buffer holds the secrets of what happened and when Timestamp precision matters when you're hunting bugs again [Chorus] Trace and profile, catch the call Perf records where cycles fall GDB with KGDB mode Ftrace reveals the execution road Memory leaks and deadlock scenes Sysrq magic, intervenes Debug symbols tell the tale When kernel space systems fail [Bridge] KASAN finds the poison bytes UBSAN checks for overflow writes Lock dependency graphs expose Circular waits that decompose Kernel oops with register state Call stack frozen, sealed by fate [Verse 3] SystemTap scripts inject probes dynamically clean eBPF programs monitor what kernel routines mean Crash utility dissects vmcore files with surgical precision Post-mortem analysis guides your debugging mission When nothing else responds and system's frozen tight Alt SysRq combinations bring back control and sight Serial console debugging when the graphics fail Kernel debugger stepping through each instruction's trail [Chorus] Trace and profile, catch the call Perf records where cycles fall GDB with KGDB mode Ftrace reveals the execution road Memory leaks and deadlock scenes Sysrq magic, intervenes Debug symbols tell the tale When kernel space systems fail [Outro] From user space frustrations to kernel revelations Debug at the boundary, solve across abstractions Performance bottlenecks vanish under scrutiny's lens Master these techniques and kernel mysteries end
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