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parisc: Handle kgdb breakpoints only in kernel context

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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>
This commit is contained in:
Helge Deller 2023-05-24 14:34:58 +02:00 committed by Greg Kroah-Hartman
parent e1f14a4071
commit c0993b463f
1 changed files with 2 additions and 2 deletions
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4
arch/parisc/kernel/traps.c
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@ -302,8 +302,8 @@ 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;
}