trace_landlock_free_domain(9)

trace_landlock_free_domain(9) 💅

okay so this page is from the Kernel API Manual — yes, the kernel docs, and we’re making it cute. buckle up, bestie 🎀

💖 NAME 💖

trace_landlock_free_domain — “Domain freed” 🦋

✨ SYNOPSIS ✨

void trace_landlock_free_domain (const struct landlock_hierarchy
*hierarchy );

🌸 ARGUMENTS 🌸

• hierarchy — the hierarchy node being freed. she is never NULL, okay? never. 🙈

🎀 DESCRIPTION 🎀

This event is emitted when the hierarchy node’s last reference is dropped: its refcount reaches zero after all child domains have released their parent reference. it’s giving “final goodbye” energy, lowkey.

A committed domain is freed from a kworker via landlock_put_domain_deferred (the credential free path runs in RCU context, where sleeping is forbidden — literally not the vibe), so the current task is not the sandboxed task that triggered the free. main character = the free, not the task, iykyk.

Balanced by a matching landlock_create_domain event.

🦋 SEE ALSO 🦋

go read these, bestie — the whole landlock trace event family is iconic:

• Kernel file ./include/trace/events/landlock.h
• Landlock trace events(9)
• trace_landlock_create_ruleset(9)
• trace_landlock_free_ruleset(9)
• trace_landlock_add_rule_path_beneath(9)
• trace_landlock_add_rule_net_port(9)
• trace_landlock_create_domain(9)
• trace_landlock_enforce_domain(9)
• trace_landlock_check_rule_inode(9)
• trace_landlock_check_rule_net_port(9)
• trace_landlock_deny_access_fs(9)
• trace_landlock_deny_access_net(9)
• trace_landlock_deny_ptrace(9)
• trace_landlock_deny_scope_signal(9)
• trace_landlock_deny_scope_abstract_unix_socket(9)

that’s the whole page, bestie 💖 source/version ./include/trace/events, dated October 2026, from the Kernel API Manual. periodt. 🫶