[PATCH] x86_64: Fix interaction of single stepping with debuggers (d61915da) · Commits · 戴 / test

Ported from i386/Linus Fix another TF corner case. Need to do the special TF handling for all signals to make debuggers happy Signed-off-by:

arch/x86_64/kernel/signal.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -368,6 +368,18 @@ handle_signal(unsigned long sig, siginfo_t info, struct k_sigaction ka,
		}
		}

		/*
		* If TF is set due to a debugger (PT_DTRACE), clear the TF
		* flag so that register information in the sigcontext is
		* correct.
		*/
		if (unlikely(regs->eflags & TF_MASK)) {
		if (likely(current->ptrace & PT_DTRACE)) {
		current->ptrace &= ~PT_DTRACE;
		regs->eflags &= ~TF_MASK;
		}
		}

		#ifdef CONFIG_IA32_EMULATION
		if (test_thread_flag(TIF_IA32)) {
		if (ka->sa.sa_flags & SA_SIGINFO)