linux.git/scripts/mod/modpost.c, branch v4.18.12

scripts: modpost: check memory allocation results

2018-09-15T07:46:46+00:00

[ Upstream commit 1f3aa9002dc6a0d59a4b599b4fc8f01cf43ef014 ]

Fix missing error check for memory allocation functions in
scripts/mod/modpost.c.

Fixes kernel bugzilla #200319:
https://bugzilla.kernel.org/show_bug.cgi?id=200319

Signed-off-by: Randy Dunlap 
Cc: Yuexing Wang 
Signed-off-by: Masahiro Yamada 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

modpost: constify *modname function argument where possible

2018-05-17T13:45:00+00:00

Neither find_module() nor read_symbols() does change *modname.

Signed-off-by: Masahiro Yamada

modpost: remove redundant is_vmlinux() test

2018-05-17T13:44:59+00:00

The second test of is_vmlinux() is redundant.

Signed-off-by: Masahiro Yamada

modpost: use strstarts() helper more widely

2018-05-17T13:44:59+00:00

Currently, strstarts() is only used in export_from_secname().
Use it more widely to improve the code readability.

Signed-off-by: Masahiro Yamada

modpost: pass struct elf_info pointer to get_modinfo()

2018-05-17T13:44:58+00:00

get_(next_)modinfo takes a pointer and length pair of the .modinfo
section.  Instead, pass struct elf_info pointer to reduce the number
of function arguments.

Signed-off-by: Masahiro Yamada

modpost: remove symbol prefix support

2018-05-17T13:43:33+00:00

CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX was selected by BLACKFIN, METAG.
They were removed by commit 4ba66a976072 ("arch: remove blackfin port"),
commit bb6fb6dfcc17 ("metag: Remove arch/metag/"), respectively.

No more architecture enables CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX,
hence VMLINUX_SYMBOL_STR(foo) can be simplify replaced with "foo".

Signed-off-by: Masahiro Yamada 
Reviewed-by: Sam Ravnborg

mn10300: Remove the architecture

2018-03-09T22:19:56+00:00

Remove the MN10300 arch as the hardware is defunct.

Suggested-by: Arnd Bergmann 
Signed-off-by: David Howells 
cc: Masahiro Yamada 
cc: linux-am33-list@redhat.com
Signed-off-by: Arnd Bergmann

Merge tag 'modules-for-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

2018-02-07T22:29:34+00:00

Pull modules updates from Jessica Yu:
 "Minor code cleanups and MAINTAINERS update"

* tag 'modules-for-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  modpost: Remove trailing semicolon
  ftrace/module: Move ftrace_release_mod() to ddebug_cleanup label
  MAINTAINERS: Remove from module & paravirt maintenance

Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2018-01-30T03:08:02+00:00

Pull x86/pti updates from Thomas Gleixner:
 "Another set of melted spectrum related changes:

   - Code simplifications and cleanups for RSB and retpolines.

   - Make the indirect calls in KVM speculation safe.

   - Whitelist CPUs which are known not to speculate from Meltdown and
     prepare for the new CPUID flag which tells the kernel that a CPU is
     not affected.

   - A less rigorous variant of the module retpoline check which merily
     warns when a non-retpoline protected module is loaded and reflects
     that fact in the sysfs file.

   - Prepare for Indirect Branch Prediction Barrier support.

   - Prepare for exposure of the Speculation Control MSRs to guests, so
     guest OSes which depend on those "features" can use them. Includes
     a blacklist of the broken microcodes. The actual exposure of the
     MSRs through KVM is still being worked on"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/speculation: Simplify indirect_branch_prediction_barrier()
  x86/retpoline: Simplify vmexit_fill_RSB()
  x86/cpufeatures: Clean up Spectre v2 related CPUID flags
  x86/cpu/bugs: Make retpoline module warning conditional
  x86/bugs: Drop one "mitigation" from dmesg
  x86/nospec: Fix header guards names
  x86/alternative: Print unadorned pointers
  x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support
  x86/cpufeature: Blacklist SPEC_CTRL/PRED_CMD on early Spectre v2 microcodes
  x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown
  x86/msr: Add definitions for new speculation control MSRs
  x86/cpufeatures: Add AMD feature bits for Speculation Control
  x86/cpufeatures: Add Intel feature bits for Speculation Control
  x86/cpufeatures: Add CPUID_7_EDX CPUID leaf
  module/retpoline: Warn about missing retpoline in module
  KVM: VMX: Make indirect call speculation safe
  KVM: x86: Make indirect calls in emulator speculation safe

module/retpoline: Warn about missing retpoline in module

2018-01-26T14:03:56+00:00

There's a risk that a kernel which has full retpoline mitigations becomes
vulnerable when a module gets loaded that hasn't been compiled with the
right compiler or the right option.

To enable detection of that mismatch at module load time, add a module info
string "retpoline" at build time when the module was compiled with
retpoline support. This only covers compiled C source, but assembler source
or prebuilt object files are not checked.

If a retpoline enabled kernel detects a non retpoline protected module at
load time, print a warning and report it in the sysfs vulnerability file.

[ tglx: Massaged changelog ]

Signed-off-by: Andi Kleen 
Signed-off-by: Thomas Gleixner 
Cc: David Woodhouse 
Cc: gregkh@linuxfoundation.org
Cc: torvalds@linux-foundation.org
Cc: jeyu@kernel.org
Cc: arjan@linux.intel.com
Link: https://lkml.kernel.org/r/20180125235028.31211-1-andi@firstfloor.org