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modsign: log module name in the event of an error

Now that we have the load_info struct all initialized (including info->name, which contains the name of the module) before module_sig_check(), make the load_info struct and hence module name available to mod_verify_sig() so that we can log the module name in the event of an error.

Jessica Yu committed 8 years ago

Commit f314dfe1 parent 996302c3 files · +32 −27Browse files

Showing the changes to kernel/module.c (1 of 3 files). Show all

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kernel/module.c+1−21
@@ -307,26 +307,6 @@ int unregister_module_notifier(struct notifier_block *nb) · 306 unmodified lines
307}307}
308EXPORT_SYMBOL(unregister_module_notifier);308EXPORT_SYMBOL(unregister_module_notifier);
309 309
310struct load_info {
311 const char *name;
312 /* pointer to module in temporary copy, freed at end of load_module() */
313 struct module *mod;
314 Elf_Ehdr *hdr;
315 unsigned long len;
316 Elf_Shdr *sechdrs;
317 char *secstrings, *strtab;
318 unsigned long symoffs, stroffs;
319 struct _ddebug *debug;
320 unsigned int num_debug;
321 bool sig_ok;
322#ifdef CONFIG_KALLSYMS
323 unsigned long mod_kallsyms_init_off;
324#endif
325 struct {
326 unsigned int sym, str, mod, vers, info, pcpu;
327 } index;
328};
329
330/*310/*
331 * We require a truly strong try_module_get(): 0 means success.311 * We require a truly strong try_module_get(): 0 means success.
332 * Otherwise an error is returned due to ongoing or failed312 * Otherwise an error is returned due to ongoing or failed
@@ -2778,7 +2758,7 @@ static int module_sig_check(struct load_info *info, int flags) · 2445 unmodified lines
2778 memcmp(mod + info->len - markerlen, MODULE_SIG_STRING, markerlen) == 0) {2758 memcmp(mod + info->len - markerlen, MODULE_SIG_STRING, markerlen) == 0) {
2779 /* We truncate the module to discard the signature */2759 /* We truncate the module to discard the signature */
2780 info->len -= markerlen;2760 info->len -= markerlen;
2781 err = mod_verify_sig(mod, &info->len);2761 err = mod_verify_sig(mod, info);
2782 }2762 }
2783 2763
2784 if (!err) {2764 if (!err) {