[GIT PULL] parisc fixes for 4.6-rc2

[GIT PULL] parisc fixes for 4.6-rc2

[Helge Deller]

Hi Linus,

please pull some important fixes for the parisc architecture from:

  git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git parisc-4.6-3

Since commit 0de7985 (parisc: Use generic extable search and sort routines)
module loading is boken on parisc, because the parisc module loader wasn't
prepared for the new R_PARISC_PCREL32 relocations.

In addition, due to that breakage, Mikulas Patocka noticed that handling
exceptions from modules probably never worked on parisc. It was just masked by
the fact that exceptions from modules don't happen during normal use.

This patch series fixes those issues and survives the tests of the
lib/test_user_copy kernel module test.  Some patches are tagged for stable.

Thanks,
Helge

----------------------------------------------------------------
Helge Deller (5):
      parisc: Handle R_PARISC_PCREL32 relocations in kernel modules
      parisc: Avoid function pointers for kernel exception routines
      parisc: Fix kernel crash with reversed copy_from_user()
      parisc: Unbreak handling exceptions from kernel modules
      parisc: Update comment regarding relative extable support

 arch/parisc/include/asm/uaccess.h | 11 +++++------
 arch/parisc/kernel/asm-offsets.c  |  1 +
 arch/parisc/kernel/module.c       |  8 ++++++++
 arch/parisc/kernel/parisc_ksyms.c | 10 +++++-----
 arch/parisc/kernel/traps.c        |  3 +++
 arch/parisc/lib/fixup.S           |  6 ++++++
 arch/parisc/mm/fault.c            |  1 +
 7 files changed, 29 insertions(+), 11 deletions(-)

Re: [GIT PULL] parisc fixes for 4.6-rc2

[Mikulas Patocka]

On Sat, 9 Apr 2016, Helge Deller wrote:

> Hi Linus,
> 
> please pull some important fixes for the parisc architecture from:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git parisc-4.6-3
> 
> Since commit 0de7985 (parisc: Use generic extable search and sort routines)
> module loading is boken on parisc, because the parisc module loader wasn't
> prepared for the new R_PARISC_PCREL32 relocations.
> 
> In addition, due to that breakage, Mikulas Patocka noticed that handling
> exceptions from modules probably never worked on parisc. It was just masked by
> the fact that exceptions from modules don't happen during normal use.
> 
> This patch series fixes those issues and survives the tests of the
> lib/test_user_copy kernel module test.  Some patches are tagged for stable.
> 
> Thanks,
> Helge
> 
> ----------------------------------------------------------------
> Helge Deller (5):
>       parisc: Handle R_PARISC_PCREL32 relocations in kernel modules
>       parisc: Avoid function pointers for kernel exception routines
>       parisc: Fix kernel crash with reversed copy_from_user()
>       parisc: Unbreak handling exceptions from kernel modules
>       parisc: Update comment regarding relative extable support
> 
>  arch/parisc/include/asm/uaccess.h | 11 +++++------
>  arch/parisc/kernel/asm-offsets.c  |  1 +
>  arch/parisc/kernel/module.c       |  8 ++++++++
>  arch/parisc/kernel/parisc_ksyms.c | 10 +++++-----
>  arch/parisc/kernel/traps.c        |  3 +++
>  arch/parisc/lib/fixup.S           |  6 ++++++
>  arch/parisc/mm/fault.c            |  1 +
>  7 files changed, 29 insertions(+), 11 deletions(-)

Hi

I confirm that the kernel 4.6-rc3 fixes exception handling from modules.

Mikulas