kernel/module/debug_kmemleak.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Module kmemleak support
   4  *
   5  * Copyright (C) 2009 Catalin Marinas
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/kmemleak.h>
  10 #include "internal.h"
  11
  12 void kmemleak_load_module(const struct module *mod,
  13                           const struct load_info *info)
  14 {
  15         unsigned int i;
  16
  17         /* only scan the sections containing data */
  18         kmemleak_scan_area(mod, sizeof(struct module), GFP_KERNEL);
  19
  20         for (i = 1; i < info->hdr->e_shnum; i++) {
  21                 /* Scan all writable sections that's not executable */
  22                 if (!(info->sechdrs[i].sh_flags & SHF_ALLOC) ||
  23                     !(info->sechdrs[i].sh_flags & SHF_WRITE) ||
  24                     (info->sechdrs[i].sh_flags & SHF_EXECINSTR))
  25                         continue;
  26
  27                 kmemleak_scan_area((void *)info->sechdrs[i].sh_addr,
  28                                    info->sechdrs[i].sh_size, GFP_KERNEL);
  29         }
  30 }