Commit 43ffe982 authored May 24, 2023 by Helge Deller Committed by Greg Kroah-Hartman May 30, 2023

parisc: Handle kgdb breakpoints only in kernel context



commit 6888ff04e37d01295620a73f3f7efbc79f6ef152 upstream.

The kernel kgdb break instructions should only be handled when running
in kernel context.

Cc: <stable@vger.kernel.org> # v5.4+
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent f7d19a36

arch/parisc/kernel/traps.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -305,8 +305,8 @@ static void handle_break(struct pt_regs *regs)
		#endif

		#ifdef CONFIG_KGDB
		if (unlikely(iir == PARISC_KGDB_COMPILED_BREAK_INSN \|\|
		iir == PARISC_KGDB_BREAK_INSN)) {
		if (unlikely((iir == PARISC_KGDB_COMPILED_BREAK_INSN \|\|
		iir == PARISC_KGDB_BREAK_INSN)) && !user_mode(regs)) {
		kgdb_handle_exception(9, SIGTRAP, 0, regs);
		return;
		}