diff options
| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2023-04-23 09:39:47 +0800 |
|---|---|---|
| committer | Guo Ren <guoren@linux.alibaba.com> | 2023-06-18 08:37:27 -0400 |
| commit | dd64621a2a97798d5df40028238a703d4324036b (patch) | |
| tree | 7c694cda668d0197a500285dd16cafb9ddd9c8c7 /arch/csky/kernel | |
| parent | ac9a78681b921877518763ba0e89202254349d1b (diff) | |
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 <yangtiezhu@loongson.cn>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Signed-off-by: Guo Ren <guoren@kernel.org>
Diffstat (limited to 'arch/csky/kernel')
| -rw-r--r-- | arch/csky/kernel/probes/uprobes.c | 3 |
1 files changed, 3 insertions, 0 deletions
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. |