* [PATCH] parisc: Handle Kprobes and KGDB breakpoints only in kernel
@ 2023-05-22 13:16 Helge Deller
0 siblings, 0 replies; only message in thread
From: Helge Deller @ 2023-05-22 13:16 UTC (permalink / raw)
To: linux-parisc
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 --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;
}
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2023-05-22 13:16 [PATCH] parisc: Handle Kprobes and KGDB breakpoints only in kernel Helge Deller
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