PR_MCE_KILL_SET(2const)                                PR_MCE_KILL_SET(2const)

NAME
       PR_MCE_KILL_SET - set the machine check memory corruption kill policy

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <linux/prctl.h>  /* Definition of PR_* constants */
       #include <sys/prctl.h>

       int prctl(PR_MCE_KILL, PR_MCE_KILL_SET, long pol, 0L, 0L);

DESCRIPTION
       Use a thread-specific memory corruption kill policy.

       pol defines whether the policy is early kill (PR_MCE_KILL_EARLY), late
       kill (PR_MCE_KILL_LATE), or the system-wide default
       (PR_MCE_KILL_DEFAULT).

       Early kill means that the thread receives a SIGBUS signal as soon as
       hardware memory corruption is detected inside its address space.

       In late kill mode, the process is killed only when it accesses a
       corrupted page.  See sigaction(2) for more information on the SIGBUS
       signal.

RETURN VALUE
       On success, 0 is returned.  On error, -1 is returned, and errno is set
       to indicate the error.

ERRORS
       EINVAL pol is not a valid value.

STANDARDS
       Linux.

HISTORY
       Linux 2.6.32.

SEE ALSO
       prctl(2), PR_MCE_KILL(2const)

Linux man-pages 6.19              2026-02-08           PR_MCE_KILL_SET(2const)