trace_signal_deliver(9)

💖 NAME 💖

trace_signal_deliver — the hook that gets called when a signal is delivered ✨

okay so this is trace_signal_deliver(9) from the Kernel API Manual, and we’re gonna get you comfy with it, bestie 🫶

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🌸 SYNOPSIS 🌸

here’s the function signature, no cap:

void trace_signal_deliver (int sig , struct kernel_siginfo *info ,
       struct k_sigaction *ka );

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🦋 ARGUMENTS 🦋

• sig — the signal number, literally the signal’s little ID 🎀
• info — a pointer to struct siginfo 👀
• ka — a pointer to struct k_sigaction 💅

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💅 DESCRIPTION 💅

so here’s the tea: a sig signal is delivered to the current process with the info siginfo, and it’s gonna be handled by ka. and ka->sa.sa_handler can be SIG_IGN or SIG_DFL — iconic, but important 😌

now for the lore: some signals reported by the signal_generate tracepoint can be lost, ignored, or modified (by a debugger) before they ever hit this tracepoint 😭. so this tracepoint can show you which signals are actually delivered, but matching generated signals and delivered signals may not be correct — fr fr, don’t treat that match-up as gospel 💀

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🔥 SEE ALSO 🔥

• Kernel file ./include/trace/events/signal.h — go peek, bestie 📖
• trace_signal_generate(9) — the related tracepoint vibe check 👑

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okay bye bestie — source/version is ./include/trace/events, date is October 2026, and this whole page is literally trace_signal_deliver(9) 🫶💅