linux-stable.git/arch/openrisc, branch linux-4.1.y

signal/openrisc: Fix do_unaligned_access to send the proper signal

2018-03-04T15:28:22+00:00

[ Upstream commit 500d58300571b6602341b041f97c082a461ef994 ]

While reviewing the signal sending on openrisc the do_unaligned_access
function stood out because it is obviously wrong.  A comment about an
si_code set above when actually si_code is never set.  Leading to a
random si_code being sent to userspace in the event of an unaligned
access.

Looking further SIGBUS BUS_ADRALN is the proper pair of signal and
si_code to send for an unaligned access. That is what other
architectures do and what is required by posix.

Given that do_unaligned_access is broken in a way that no one can be
relying on it on openrisc fix the code to just do the right thing.

Cc: stable@vger.kernel.org
Fixes: 769a8a96229e ("OpenRISC: Traps")
Cc: Jonas Bonn 
Cc: Stefan Kristiansson 
Cc: Stafford Horne 
Cc: Arnd Bergmann 
Cc: openrisc@lists.librecores.org
Acked-by: Stafford Horne 
Signed-off-by: "Eric W. Biederman" 
Signed-off-by: Sasha Levin

openrisc: fix issue handling 8 byte get_user calls

2018-01-17T17:55:34+00:00

[ Upstream commit 154e67cd8e8f964809d0e75e44bb121b169c75b3 ]

Was getting the following error with allmodconfig:

  ERROR: "__get_user_bad" [lib/test_user_copy.ko] undefined!

This was simply a missing break statement, causing an unwanted fall
through.

Signed-off-by: Stafford Horne 
Signed-off-by: Sasha Levin

openrisc: Add _text symbol to fix ksym build error

2017-09-10T20:35:55+00:00

[ Upstream commit 086cc1c31a0ec075dac02425367c871bb65bc2c9 ]

The build robot reports:

   .tmp_kallsyms1.o: In function `kallsyms_relative_base':
>> (.rodata+0x8a18): undefined reference to `_text'

This is when using 'make alldefconfig'. Adding this _text symbol to mark
the start of the kernel as in other architecture fixes this.

Signed-off-by: Stafford Horne 
Acked-by: Jonas Bonn 
Signed-off-by: Sasha Levin

openrisc: fix the fix of copy_from_user()

2016-10-10T01:21:06+00:00

[ Upstream commit 8e4b72054f554967827e18be1de0e8122e6efc04 ]

Since commit acb2505d0119 ("openrisc: fix copy_from_user()"),
copy_from_user() returns the number of bytes requested, not the
number of bytes not copied.

Cc: Al Viro 
Fixes: acb2505d0119 ("openrisc: fix copy_from_user()")
Signed-off-by: Guenter Roeck 
Signed-off-by: Sasha Levin

openrisc: fix copy_from_user()

2016-10-03T01:13:59+00:00

[ Upstream commit acb2505d0119033a80c85ac8d02dccae41271667 ]

... that should zero on faults.  Also remove the  helpful
logics wrt range truncation copied from ppc32.  Where it had ever
been needed only in case of copy_from_user() *and* had not been merged
into the mainline until a month after the need had disappeared.
A decade before openrisc went into mainline, I might add...

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro 
Signed-off-by: Sasha Levin

openrisc: fix CONFIG_UID16 setting

2015-08-03T16:28:58+00:00

commit 04ea1e91f85615318ea91ce8ab50cb6a01ee4005 upstream.

openrisc-allnoconfig:

  kernel/uid16.c: In function 'SYSC_setgroups16':
  kernel/uid16.c:184:2: error: implicit declaration of function 'groups_alloc'
  kernel/uid16.c:184:13: warning: assignment makes pointer from integer without a cast

openrisc shouldn't be setting CONFIG_UID16 when CONFIG_MULTIUSER=n.

Fixes: 2813893f8b197a1 ("kernel: conditionally support non-root users, groups and capabilities")
Reported-by: Fengguang Wu 
Cc: Iulia Manda 
Cc: Josh Triplett 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Cc: Guenter Roeck 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'akpm' (patches from Andrew)

2015-04-15T23:39:15+00:00

Merge second patchbomb from Andrew Morton:

 - the rest of MM

 - various misc bits

 - add ability to run /sbin/reboot at reboot time

 - printk/vsprintf changes

 - fiddle with seq_printf() return value

* akpm: (114 commits)
  parisc: remove use of seq_printf return value
  lru_cache: remove use of seq_printf return value
  tracing: remove use of seq_printf return value
  cgroup: remove use of seq_printf return value
  proc: remove use of seq_printf return value
  s390: remove use of seq_printf return value
  cris fasttimer: remove use of seq_printf return value
  cris: remove use of seq_printf return value
  openrisc: remove use of seq_printf return value
  ARM: plat-pxa: remove use of seq_printf return value
  nios2: cpuinfo: remove use of seq_printf return value
  microblaze: mb: remove use of seq_printf return value
  ipc: remove use of seq_printf return value
  rtc: remove use of seq_printf return value
  power: wakeup: remove use of seq_printf return value
  x86: mtrr: if: remove use of seq_printf return value
  linux/bitmap.h: improve BITMAP_{LAST,FIRST}_WORD_MASK
  MAINTAINERS: CREDITS: remove Stefano Brivio from B43
  .mailmap: add Ricardo Ribalda
  CREDITS: add Ricardo Ribalda Delgado
  ...

openrisc: remove use of seq_printf return value

2015-04-15T23:35:25+00:00

The seq_printf return value, because it's frequently misused,
will eventually be converted to void.

See: commit 1f33c41c03da ("seq_file: Rename seq_overflow() to
     seq_has_overflowed() and make public")

Signed-off-by: Joe Perches 
Cc: Jonas Bonn 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc

2015-04-15T20:53:55+00:00

Pull exec domain removal from Richard Weinberger:
 "This series removes execution domain support from Linux.

  The idea behind exec domains was to support different ABIs.  The
  feature was never complete nor stable.  Let's rip it out and make the
  kernel signal handling code less complicated"

* 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (27 commits)
  arm64: Removed unused variable
  sparc: Fix execution domain removal
  Remove rest of exec domains.
  arch: Remove exec_domain from remaining archs
  arc: Remove signal translation and exec_domain
  xtensa: Remove signal translation and exec_domain
  xtensa: Autogenerate offsets in struct thread_info
  x86: Remove signal translation and exec_domain
  unicore32: Remove signal translation and exec_domain
  um: Remove signal translation and exec_domain
  tile: Remove signal translation and exec_domain
  sparc: Remove signal translation and exec_domain
  sh: Remove signal translation and exec_domain
  s390: Remove signal translation and exec_domain
  mn10300: Remove signal translation and exec_domain
  microblaze: Remove signal translation and exec_domain
  m68k: Remove signal translation and exec_domain
  m32r: Remove signal translation and exec_domain
  m32r: Autogenerate offsets in struct thread_info
  frv: Remove signal translation and exec_domain
  ...

arch: Remove exec_domain from remaining archs

2015-04-12T19:03:30+00:00

Signed-off-by: Richard Weinberger