From: Helge Deller deller@gmx.de
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 --- arch/parisc/kernel/traps.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/parisc/kernel/traps.c +++ b/arch/parisc/kernel/traps.c @@ -302,8 +302,8 @@ static void handle_break(struct pt_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; }