xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

signal: Use SEND_SIG_PRIV not SEND_SIG_FORCED with SIGKILL and SIGSTOP

Browse Source 
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>
This commit is contained in:
Eric W. Biederman
2018-09-03 10:32:52 +02:00
parent f149b31557
commit 079b22dc9b
3 changed files with 5 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/ptrace.c
View File

@@ -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);