A part of dbb5afad100a ("ptrace: make ptrace() fail if the tracee changed its
pid unexpectedly")
is missing during merge, which invalidates the commit.
Signed-off-by: He Zhe <[email protected]>
---
kernel/ptrace.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index ee935f6c2300..ec2d9fd37a11 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -194,7 +194,8 @@ static bool ptrace_freeze_traced(struct task_struct *task)
return ret;
spin_lock_irq(&task->sighand->siglock);
- if (task_is_traced(task) && !__fatal_signal_pending(task)) {
+ if (task_is_traced(task) && !looks_like_a_spurious_pid(task) &&
+ !__fatal_signal_pending(task)) {
unsigned long flags;
raw_spin_lock_irqsave(&task->pi_lock, flags);
--
2.29.2
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