diff options
| -rw-r--r-- | include/linux/ptrace.h | 2 | ||||
| -rw-r--r-- | include/uapi/linux/ptrace.h | 5 | ||||
| -rw-r--r-- | kernel/ptrace.c | 3 |
3 files changed, 9 insertions, 1 deletions
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h index a89ff04..addfbe7 100644 --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -32,6 +32,8 @@ #define PT_TRACE_EXIT PT_EVENT_FLAG(PTRACE_EVENT_EXIT) #define PT_TRACE_SECCOMP PT_EVENT_FLAG(PTRACE_EVENT_SECCOMP) +#define PT_EXITKILL (PTRACE_O_EXITKILL << PT_OPT_FLAG_SHIFT) + /* single stepping state bits (used on ARM and PA-RISC) */ #define PT_SINGLESTEP_BIT 31 #define PT_SINGLESTEP (1<<PT_SINGLESTEP_BIT) diff --git a/include/uapi/linux/ptrace.h b/include/uapi/linux/ptrace.h index 1ef6c05..022ab18 100644 --- a/include/uapi/linux/ptrace.h +++ b/include/uapi/linux/ptrace.h @@ -73,7 +73,10 @@ #define PTRACE_O_TRACEEXIT (1 << PTRACE_EVENT_EXIT) #define PTRACE_O_TRACESECCOMP (1 << PTRACE_EVENT_SECCOMP) -#define PTRACE_O_MASK 0x000000ff +/* eventless options */ +#define PTRACE_O_EXITKILL (1 << 20) + +#define PTRACE_O_MASK (0x000000ff | PTRACE_O_EXITKILL) #include <asm/ptrace.h> diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 1f5e55d..ec8118a 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -457,6 +457,9 @@ void exit_ptrace(struct task_struct *tracer) return; list_for_each_entry_safe(p, n, &tracer->ptraced, ptrace_entry) { + if (unlikely(p->ptrace & PT_EXITKILL)) + send_sig_info(SIGKILL, SEND_SIG_FORCED, p); + if (__ptrace_detach(tracer, p)) list_add(&p->ptrace_entry, &ptrace_dead); } |