From dd64621a2a97798d5df40028238a703d4324036b Mon Sep 17 00:00:00 2001 From: Tiezhu Yang Date: Sun, 23 Apr 2023 09:39:47 +0800 Subject: csky: uprobes: Restore thread.trap_no thread.trap_no is saved in arch_uprobe_pre_xol(), it should be restored in arch_uprobe_{post,abort}_xol() accordingly, otherwise the save operation is meaningless, this change is similar with x86 and powerpc. Signed-off-by: Tiezhu Yang Acked-by: Oleg Nesterov Reviewed-by: Guo Ren Signed-off-by: Guo Ren --- arch/csky/kernel/probes/uprobes.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/csky') diff --git a/arch/csky/kernel/probes/uprobes.c b/arch/csky/kernel/probes/uprobes.c index 2d31a12e46cf..936bea6fd32d 100644 --- a/arch/csky/kernel/probes/uprobes.c +++ b/arch/csky/kernel/probes/uprobes.c @@ -64,6 +64,7 @@ int arch_uprobe_post_xol(struct arch_uprobe *auprobe, struct pt_regs *regs) struct uprobe_task *utask = current->utask; WARN_ON_ONCE(current->thread.trap_no != UPROBE_TRAP_NR); + current->thread.trap_no = utask->autask.saved_trap_no; instruction_pointer_set(regs, utask->vaddr + auprobe->insn_size); @@ -101,6 +102,8 @@ void arch_uprobe_abort_xol(struct arch_uprobe *auprobe, struct pt_regs *regs) { struct uprobe_task *utask = current->utask; + current->thread.trap_no = utask->autask.saved_trap_no; + /* * Task has received a fatal signal, so reset back to probed * address. -- cgit v1.2.3