stack_trace_save_user(9)

🌸 NAME 🌸

okay so bestie, welcome to stack_trace_save_user(9) from the Kernel API Manual — the lil kernel API that does exactly what it says: Save a user space stack trace into a storage array. no cap, that’s the whole vibe: grab that user space stack trace and tuck it into your array. 💖

✨ SYNOPSIS ✨

unsigned int stack_trace_save_user (unsigned long *store , unsigned int
size );

💅 ARGUMENTS 💅

• store — Pointer to storage array. this is the array, bestie — the place where the trace entries get stored. 📦
• size — Size of the storage array. it’s literally how big your store array is, so the function knows the limit. 🎀

🎀 RETURN 🎀

Number of trace entries stored. that’s the count of trace entries that got saved, slay. ✨

🦋 SEE ALSO 🦋

Kernel file ./kernel/stacktrace.c, and these iconic little references:

• stack_trace_print(9)
• stack_trace_snprint(9)
• stack_trace_save(9)
• stack_trace_save_tsk(9)
• stack_trace_save_regs(9)
• stack_trace_save_tsk_reliable(9)
• stack_trace_save(9)
• stack_trace_save_tsk(9)
• stack_trace_save_regs(9)
• stack_trace_save_tsk_reliable(9)
• filter_irq_stacks(9)

xoxo, signed off by the ./kernel source 💖 October 2026, still repping stack_trace_save_user(9) ✨