diff options
| -rw-r--r-- | kernel/ptrace.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 4b4f72084d1..74a3d693c19 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -596,18 +596,24 @@ int ptrace_request(struct task_struct *child, long request, #ifdef CONFIG_BINFMT_ELF_FDPIC case PTRACE_GETFDPIC: { + struct mm_struct *mm = get_task_mm(child); unsigned long tmp = 0; + ret = -ESRCH; + if (!mm) + break; + switch (addr) { case PTRACE_GETFDPIC_EXEC: - tmp = child->mm->context.exec_fdpic_loadmap; + tmp = mm->context.exec_fdpic_loadmap; break; case PTRACE_GETFDPIC_INTERP: - tmp = child->mm->context.interp_fdpic_loadmap; + tmp = mm->context.interp_fdpic_loadmap; break; default: break; } + mmput(mm); ret = put_user(tmp, (unsigned long __user *) data); break; |