uretprobe(2)                  System Calls Manual                 uretprobe(2)

NAME
       uretprobe - execute pending return uprobes

SYNOPSIS
       int uretprobe(void);

DESCRIPTION
       uretprobe() is an alternative to breakpoint instructions for triggering
       return uprobe consumers.

       Calls to uretprobe() are only made from the user-space trampoline
       provided by the kernel.  Calls from any other place result in a SIGILL.

RETURN VALUE
       The return value is architecture-specific.

ERRORS
       SIGILL uretprobe() was called by a user-space program.

VERSIONS
       The behavior varies across systems.

STANDARDS
       None.

HISTORY
       Linux 6.11.

       uretprobe() was initially introduced for the x86_64 architecture where
       it was shown to be faster than breakpoint traps.  It might be extended
       to other architectures.

CAVEATS
       uretprobe() exists only to allow the invocation of return uprobe
       consumers.  It should never be called directly.

Linux man-pages 6.19              2026-02-08                      uretprobe(2)