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| author | Eric W. Biederman <ebiederm@xmission.com> | 2018-09-03 10:32:52 +0200 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-09-11 21:19:35 +0200 |
| commit | 079b22dc9be985c591589fcb94769b8e13518aa0 (patch) | |
| tree | 13212013fd3981735b99e3da4f15e7d89cea283e /kernel/ptrace.c | |
| parent | f149b31557446aff9ca96d4be7e39cc266f6e7cc (diff) | |
| download | lwn-079b22dc9be985c591589fcb94769b8e13518aa0.tar.gz lwn-079b22dc9be985c591589fcb94769b8e13518aa0.zip | |
signal: Use SEND_SIG_PRIV not SEND_SIG_FORCED with SIGKILL and SIGSTOP
Now that siginfo is never allocated for SIGKILL and SIGSTOP there is
no difference between SEND_SIG_PRIV and SEND_SIG_FORCED for SIGKILL
and SIGSTOP. This makes SEND_SIG_FORCED unnecessary and redundant in
the presence of SIGKILL and SIGSTOP. Therefore change users of
SEND_SIG_FORCED that are sending SIGKILL or SIGSTOP to use
SEND_SIG_PRIV instead.
This removes the last users of SEND_SIG_FORCED.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'kernel/ptrace.c')
| -rw-r--r-- | kernel/ptrace.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 21fec73d45d4..45f77a1b9c97 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -396,7 +396,7 @@ static int ptrace_attach(struct task_struct *task, long request, /* SEIZE doesn't trap tracee on attach */ if (!seize) - send_sig_info(SIGSTOP, SEND_SIG_FORCED, task); + send_sig_info(SIGSTOP, SEND_SIG_PRIV, task); spin_lock(&task->sighand->siglock); @@ -563,7 +563,7 @@ void exit_ptrace(struct task_struct *tracer, struct list_head *dead) 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); + send_sig_info(SIGKILL, SEND_SIG_PRIV, p); if (__ptrace_detach(tracer, p)) list_add(&p->ptrace_entry, dead); |