seccomp_filter_release(9)

🎀 NAME 🎀

Okay bestie, welcome to seccomp_filter_release(9) from the Kernel API Manual — yes, that's the manual name, and this page is lowkey iconic. seccomp_filter_release does exactly this: detach the task from its filter tree, drop its reference count, and notify about unused filters. That's the whole name-section serve. 💅

✨ SYNOPSIS ✨

The signature is literally this, no notes:

void seccomp_filter_release (struct task_struct *tsk );

💅 ARGUMENTS 💅

• tsk — task the filter should be released from. That's the main character here, bestie.

🦋 DESCRIPTION 🦋

Okay so listen: this function should only be called when the task is exiting, because it detaches the task from its filter tree. No cap, that's the rule.

Also, PF_EXITING has to be set for the task. Like, required. Not optional, not a vibe suggestion — set it. periodt 💅

🌈 SEE ALSO 🌈

These are the references your brain wants next, fr fr:

• Kernel file: ./kernel/seccomp.c
• struct seccomp_kaddfd(9)
• struct notification(9)
• struct action_cache(9)
• struct seccomp_filter(9)
• seccomp_check_filter(9)
• seccomp_cache_check_allow(9)
• seccomp_run_filters(9)
• seccomp_can_sync_threads(9)
• seccomp_sync_threads(9)
• seccomp_prepare_filter(9)
• seccomp_prepare_user_filter(9)
• seccomp_is_const_allow(9)
• seccomp_cache_prepare(9)
• seccomp_attach_filter(9)
• seccomp_set_mode_strict(9)
• seccomp_set_mode_filter(9)
• prctl_set_seccomp(9)

Source/version: ./kernel · Date: October 2026. That's the page, bestie — go be iconic with your filters 🫶✨