This is a note to let you know that I've just added the patch titled
parisc: Handle kgdb breakpoints only in kernel context
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
parisc-handle-kgdb-breakpoints-only-in-kernel-context.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6888ff04e37d01295620a73f3f7efbc79f6ef152 Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@xxxxxx>
Date: Wed, 24 May 2023 14:34:58 +0200
Subject: parisc: Handle kgdb breakpoints only in kernel context
From: Helge Deller <deller@xxxxxx>
commit 6888ff04e37d01295620a73f3f7efbc79f6ef152 upstream.
The kernel kgdb break instructions should only be handled when running
in kernel context.
Cc: <stable@xxxxxxxxxxxxxxx> # v5.4+
Signed-off-by: Helge Deller <deller@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
@@ -305,8 +305,8 @@ 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;
}
Patches currently in stable-queue which might be from deller@xxxxxx are
queue-5.4/parisc-allow-to-reboot-machine-after-system-halt.patch
queue-5.4/parisc-handle-kgdb-breakpoints-only-in-kernel-context.patch
