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Modules updates for v5.6

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Summary of modules changes for the 5.6 merge window:
 
 - Add "MS" (SHF_MERGE|SHF_STRINGS) section flags to __ksymtab_strings to
   indicate to the linker that it can perform string deduplication (i.e.,
   duplicate strings are reduced to a single copy in the string table).
   This means any repeated namespace string would be merged to just one
   entry in __ksymtab_strings.
 
 - Various code cleanups and small fixes (fix small memleak in error path,
   improve moduleparam docs, silence rcu warnings, improve error logging)
 
 Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull module updates from Jessica Yu:
 "Summary of modules changes for the 5.6 merge window:

   - Add "MS" (SHF_MERGE|SHF_STRINGS) section flags to __ksymtab_strings
     to indicate to the linker that it can perform string deduplication
     (i.e., duplicate strings are reduced to a single copy in the string
     table). This means any repeated namespace string would be merged to
     just one entry in __ksymtab_strings.

   - Various code cleanups and small fixes (fix small memleak in error
     path, improve moduleparam docs, silence rcu warnings, improve error
     logging)"

* tag 'modules-for-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  module.h: Annotate mod_kallsyms with __rcu
  module: avoid setting info->name early in case we can fall back to info->mod->name
  modsign: print module name along with error message
  kernel/module: Fix memleak in module_add_modinfo_attrs()
  export.h: reduce __ksymtab_strings string duplication by using "MS" section flags
  moduleparam: fix kerneldoc
  modules: lockdep: Suppress suspicious RCU usage warning
This commit is contained in:
Linus Torvalds 2020-01-31 11:42:13 -08:00
commit ddaefe8947
5 changed files with 119 additions and 28 deletions
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2
include/linux/module.h
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@ -429,7 +429,7 @@ struct module {
#ifdef CONFIG_KALLSYMS
/* Protected by RCU and/or module_mutex: use rcu_dereference() */
struct mod_kallsyms *kallsyms;
struct mod_kallsyms __rcu *kallsyms;
struct mod_kallsyms core_kallsyms;
/* Section attributes */