diff mbox series

parisc: Handle Kprobes and KGDB breakpoints only in kernel

Message ID ZGtrS4jHUbWXWdTo@p100 (mailing list archive)
State Accepted, archived
Headers show
Series parisc: Handle Kprobes and KGDB breakpoints only in kernel | expand

Commit Message

Helge Deller May 22, 2023, 1:16 p.m. UTC 
context
Reply-To:

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

Signed-off-by: Helge Deller <deller@gmx.de>
diff mbox series

Patch

diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index f9696fbf646c..67b51841dc8b 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -291,19 +291,19 @@  static void handle_break(struct pt_regs *regs)
 	}

 #ifdef CONFIG_KPROBES
-	if (unlikely(iir == PARISC_KPROBES_BREAK_INSN)) {
+	if (unlikely(iir == PARISC_KPROBES_BREAK_INSN && !user_mode(regs))) {
 		parisc_kprobe_break_handler(regs);
 		return;
 	}
-	if (unlikely(iir == PARISC_KPROBES_BREAK_INSN2)) {
+	if (unlikely(iir == PARISC_KPROBES_BREAK_INSN2 && !user_mode(regs))) {
 		parisc_kprobe_ss_handler(regs);
 		return;
 	}
 #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;
 	}