user_enable_block_step(9)

💅 user_enable_block_step(9) 💅

okay bestie, welcome to user_enable_block_step(9) from the Kernel API Manual — this is the page about stepping until a branch in a user-mode task, and it's giving extremely specific low-level energy 🫶✨

🌸 NAME 🌸

user_enable_block_step — step until branch in user-mode task 💅

🦋 SYNOPSIS 🦋

void user_enable_block_step (struct task_struct *task );

🎀 ARGUMENTS 🎀

• task — either current or a task stopped in TASK_TRACED. That's the whole vibe check for this one 💖

🔥 DESCRIPTION 🔥

okay so here's the tea: this can only be called when arch_has_block_step has returned nonzero, and it will never be called when single-instruction stepping is being used. No cap 🫶

Set task so that when it returns to user mode, it will trap after the next branch or trap taken. That's literally the whole move ✨

👑 SEE ALSO 👑

• Kernel file: ./include/linux/ptrace.h
• ptrace_may_access(9)
• ptrace_parent(9)
• ptrace_event_enabled(9)
• ptrace_event(9)
• ptrace_event_pid(9)
• ptrace_init_task(9)
• ptrace_release_task(9)
• arch_has_single_step(9)
• user_enable_single_step(9)
• user_disable_single_step(9)
• arch_has_block_step(9)
• arch_ptrace_stop_needed(9)
• arch_ptrace_stop(9)
• ptrace_report_syscall_permit_entry(9)
• ptrace_report_syscall_exit(9)

cute sign-off bestie: source ./include/linux, dated October 2026, page user_enable_block_step(9) — periodt 💖🎀