signal: Use lockdep_assert_held instead of assert_spin_locked

The distinction is that assert_spin_locked() checks if the lock is held *by*anyone* whereas lockdep_assert_held() asserts the current context holds the lock. Also, the check goes away if you build without lockdep.

Eric W. Biederman committed 4 years ago

Commit cb3c19c1 parent 16cc1bc1 file · +2 −2Browse files

Showing the changes to kernel (1 of 1 file). Show all

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kernel/signal.c+2−2

@@ -884,7 +884,7 @@ static int check_kill_permission(int sig, struct kernel_siginfo *info, · 883 unmodified lines
884	884	static void ptrace_trap_notify(struct task_struct *t)
885	885	{
886	886	WARN_ON_ONCE(!(t->ptrace & PT_SEIZED));
887		− assert_spin_locked(&t->sighand->siglock);
	887	+ lockdep_assert_held(&t->sighand->siglock);
888	888
889	889	task_set_jobctl_pending(t, JOBCTL_TRAP_NOTIFY);
890	890	ptrace_signal_wake_up(t, t->jobctl & JOBCTL_LISTENING);
@@ -1079,7 +1079,7 @@ static int __send_signal_locked(int sig, struct kernel_siginfo *info, · 188 unmodified lines
1079	1079	int override_rlimit;
1080	1080	int ret = 0, result;
1081	1081
1082		− assert_spin_locked(&t->sighand->siglock);
	1082	+ lockdep_assert_held(&t->sighand->siglock);
1083	1083
1084	1084	result = TRACE_SIGNAL_IGNORED;
1085	1085	if (!prepare_signal(sig, t, force))