x86/kprobes: Fix crash when probing CS CALL instructionsgrafted

When using eBPF to probe CS CALL instructions within a function,
a crash can be triggered.

The eBPF tool probes offset 257 of the __hrtimer_run_queues()
function:

<__hrtimer_run_queues+249>:  nopl   0x0(%rax,%rax,1)
<__hrtimer_run_queues+254>:  mov    %r14,%rdi
<__hrtimer_run_queues+257>:  cs call <__x86_indirect_thunk_r12>
<__hrtimer_run_queues+263>:  mov    %eax,%r12d
<__hrtimer_run_queues+266>:  xchg   %ax,%ax
<__hrtimer_run_queues+268>:  mov    %r13,%rdi

Which triggers this crash:

  BUG: unable to handle page fault for address: 00000000000f41c9
  #PF: supervisor write access in kernel mode
  #PF: error_code(0x0002) - not-present page
  PGD 0 P4D 0
  Oops: 0002 [#1] SMP NOPTI
  CPU: 1 PID: 0 Comm: swapper/1 Kdump: loaded Tainted: P
  RIP: 0010:__hrtimer_run_queues+0x106/0x230

Note that __hrtimer_run_queues+0x106 is __hrtimer_run_queues+262, which is
at the 6th byte of the above CS CALL instruction. Since the CS CALL
instruction occupies 6 bytes, the exception occurred in the middle of that
call instruction.

The root cause is that when using eBPF tools to probe in the middle of a
function, a kprobe with INT3 is used as the underlying implementation.

During single-step emulation of the original CALL instruction,
int3_emulate_call() assumes that the probed CALL instruction is 5 bytes
long. However, the actual CS-prefixed CALL instruction occupies 6 bytes,
so it constructs an incorrect exception return address. When the CPU
returns from the kprobe handler, the next instruction to be executed is at
the address of the last byte of that CS CALL instruction. Coincidentally,
starting from that address, the CPU fetches and decodes a completely
different instruction, which ultimately triggers a kernel crash.

Fix the issue by using the actual instruction length obtained from
the instruction decoder when constructing the exception return
address, rather than relying on the hardcoded CALL_INSN_SIZE macro.

[ mingo: Refined the changelog ]

Fixes: 6256e668b7af ("x86/kprobes: Use int3 instead of debug trap for single-step")
Suggested-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Jinke Han <jinkehan@didiglobal.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://patch.msgid.link/20260908073742.GA10517@didi-ThinkCentre-M920t-N000

1 files changed, 623 insertions, 0 deletions

diff --git a/fs/nls/Kconfig b/fs/nls/Kconfig
new file mode 100644
index 000000000..2a601af6f
--- /dev/null
+++ b/fs/nls/Kconfig
@@ -0,0 +1,623 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Native language support configuration
+#
+
+menuconfig NLS
+	tristate "Native language support"
+	help
+	  The base Native Language Support. A number of filesystems
+	  depend on it (e.g. FAT, JOLIET, NT, BEOS filesystems), as well
+	  as the ability of some filesystems to use native languages
+	  (NCP, SMB).
+
+	  If unsure, say Y.
+
+	  To compile this code as a module, choose M here: the module
+	  will be called nls_base.
+
+if NLS
+
+config NLS_DEFAULT
+	string "Default NLS Option"
+	default "iso8859-1"
+	help
+	  The default NLS used when mounting file system. Note, that this is
+	  the NLS used by your console, not the NLS used by a specific file
+	  system (if different) to store data (filenames) on a disk.
+	  Currently, the valid values are:
+	  big5, cp437, cp737, cp775, cp850, cp852, cp855, cp857, cp860, cp861,
+	  cp862, cp863, cp864, cp865, cp866, cp869, cp874, cp932, cp936,
+	  cp949, cp950, cp1251, cp1255, euc-jp, euc-kr, gb2312, iso8859-1,
+	  iso8859-2, iso8859-3, iso8859-4, iso8859-5, iso8859-6, iso8859-7,
+	  iso8859-8, iso8859-9, iso8859-13, iso8859-14, iso8859-15,
+	  koi8-r, koi8-ru, koi8-u, sjis, tis-620, macroman, utf8.
+	  If you specify a wrong value, it will use the built-in NLS;
+	  compatible with iso8859-1.
+
+	  If unsure, specify it as "iso8859-1".
+
+config NLS_CODEPAGE_437
+	tristate "Codepage 437 (United States, Canada)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored
+	  in so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage that is used in
+	  the United States and parts of Canada. This is recommended.
+
+config NLS_CODEPAGE_737
+	tristate "Codepage 737 (Greek)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored
+	  in so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage that is used for
+	  Greek. If unsure, say N.
+
+config NLS_CODEPAGE_775
+	tristate "Codepage 775 (Baltic Rim)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored
+	  in so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage that is used
+	  for the Baltic Rim Languages (Latvian and Lithuanian). If unsure,
+	  say N.
+
+config NLS_CODEPAGE_850
+	tristate "Codepage 850 (Europe)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage that is used for
+	  much of Europe -- United Kingdom, Germany, Spain, Italy, and [add
+	  more countries here]. It has some characters useful to many European
+	  languages that are not part of the US codepage 437.
+
+	  If unsure, say Y.
+
+config NLS_CODEPAGE_852
+	tristate "Codepage 852 (Central/Eastern Europe)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Latin 2 codepage used by DOS
+	  for much of Central and Eastern Europe. It has all the required
+	  characters for these languages: Albanian, Croatian, Czech, English,
+	  Finnish, Hungarian, Irish, German, Polish, Romanian, Serbian (Latin
+	  transcription), Slovak, Slovenian, and Sorbian.
+
+config NLS_CODEPAGE_855
+	tristate "Codepage 855 (Cyrillic)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Cyrillic.
+
+config NLS_CODEPAGE_857
+	tristate "Codepage 857 (Turkish)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Turkish.
+
+config NLS_CODEPAGE_860
+	tristate "Codepage 860 (Portuguese)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Portuguese.
+
+config NLS_CODEPAGE_861
+	tristate "Codepage 861 (Icelandic)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Icelandic.
+
+config NLS_CODEPAGE_862
+	tristate "Codepage 862 (Hebrew)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Hebrew.
+
+config NLS_CODEPAGE_863
+	tristate "Codepage 863 (Canadian French)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Canadian
+	  French.
+
+config NLS_CODEPAGE_864
+	tristate "Codepage 864 (Arabic)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Arabic.
+
+config NLS_CODEPAGE_865
+	tristate "Codepage 865 (Norwegian, Danish)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for the Nordic
+	  European countries.
+
+config NLS_CODEPAGE_866
+	tristate "Codepage 866 (Cyrillic/Russian)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for
+	  Cyrillic/Russian.
+
+config NLS_CODEPAGE_869
+	tristate "Codepage 869 (Greek)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Greek.
+
+config NLS_CODEPAGE_936
+	tristate "Simplified Chinese charset (CP936, GB2312)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Simplified
+	  Chinese(GBK).
+
+config NLS_CODEPAGE_950
+	tristate "Traditional Chinese charset (Big5)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Traditional
+	  Chinese(Big5).
+
+config NLS_CODEPAGE_932
+	tristate "Japanese charsets (Shift-JIS, EUC-JP)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Shift-JIS
+	  or EUC-JP. To use EUC-JP, you can use 'euc-jp' as mount option or
+	  NLS Default value during kernel configuration, instead of 'cp932'.
+
+config NLS_CODEPAGE_949
+	tristate "Korean charset (CP949, EUC-KR)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for UHC.
+
+config NLS_CODEPAGE_874
+	tristate "Thai charset (CP874, TIS-620)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Thai.
+
+config NLS_ISO8859_8
+	tristate "Hebrew charsets (ISO-8859-8, CP1255)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for ISO8859-8, the Hebrew
+	  character set.
+
+config NLS_CODEPAGE_1250
+	tristate "Windows CP1250 (Slavic/Central European Languages)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CDROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the Windows CP-1250
+	  character set, which works for most Latin-written Slavic and Central
+	  European languages: Czech, German, Hungarian, Polish, Rumanian, Croatian,
+	  Slovak, Slovene.
+
+config NLS_CODEPAGE_1251
+	tristate "Windows CP1251 (Bulgarian, Belarusian)"
+	help
+	  The Microsoft FAT file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called DOS codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  DOS/Windows partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the DOS codepage for Russian and
+	  Bulgarian and Belarusian.
+
+config NLS_ASCII
+	tristate "ASCII (United States)"
+	help
+	  An ASCII NLS module is needed if you want to override the
+	  DEFAULT NLS with this very basic charset and don't want any
+	  non-ASCII characters to be translated.
+
+config NLS_ISO8859_1
+	tristate "NLS ISO 8859-1  (Latin 1; Western European Languages)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the Latin 1 character
+	  set, which covers most West European languages such as Albanian,
+	  Catalan, Danish, Dutch, English, Faeroese, Finnish, French, German,
+	  Galician, Irish, Icelandic, Italian, Norwegian, Portuguese, Spanish,
+	  and Swedish. It is also the default for the US. If unsure, say Y.
+
+config NLS_ISO8859_2
+	tristate "NLS ISO 8859-2  (Latin 2; Slavic/Central European Languages)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the Latin 2 character
+	  set, which works for most Latin-written Slavic and Central European
+	  languages: Czech, German, Hungarian, Polish, Rumanian, Croatian,
+	  Slovak, Slovene.
+
+config NLS_ISO8859_3
+	tristate "NLS ISO 8859-3  (Latin 3; Esperanto, Galician, Maltese, Turkish)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the Latin 3 character
+	  set, which is popular with authors of Esperanto, Galician, Maltese,
+	  and Turkish.
+
+config NLS_ISO8859_4
+	tristate "NLS ISO 8859-4  (Latin 4; old Baltic charset)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the Latin 4 character
+	  set which introduces letters for Estonian, Latvian, and
+	  Lithuanian. It is an incomplete predecessor of Latin 7.
+
+config NLS_ISO8859_5
+	tristate "NLS ISO 8859-5  (Cyrillic)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for ISO8859-5, a Cyrillic
+	  character set with which you can type Bulgarian, Belarusian,
+	  Macedonian, Russian, Serbian, and Ukrainian. Note that the charset
+	  KOI8-R is preferred in Russia.
+
+config NLS_ISO8859_6
+	tristate "NLS ISO 8859-6  (Arabic)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for ISO8859-6, the Arabic
+	  character set.
+
+config NLS_ISO8859_7
+	tristate "NLS ISO 8859-7  (Modern Greek)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for ISO8859-7, the Modern
+	  Greek character set.
+
+config NLS_ISO8859_9
+	tristate "NLS ISO 8859-9  (Latin 5; Turkish)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the Latin 5 character
+	  set, and it replaces the rarely needed Icelandic letters in Latin 1
+	  with the Turkish ones. Useful in Turkey.
+
+config NLS_ISO8859_13
+	tristate "NLS ISO 8859-13 (Latin 7; Baltic)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the Latin 7 character
+	  set, which supports modern Baltic languages including Latvian
+	  and Lithuanian.
+
+config NLS_ISO8859_14
+	tristate "NLS ISO 8859-14 (Latin 8; Celtic)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the Latin 8 character
+	  set, which adds the last accented vowels for Welsh (aka Cymraeg)
+	  (and Manx Gaelic) that were missing in Latin 1.
+	  <http://linux.speech.cymru.org/> has further information.
+
+config NLS_ISO8859_15
+	tristate "NLS ISO 8859-15 (Latin 9; Western European Languages with Euro)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the Latin 9 character
+	  set, which covers most West European languages such as Albanian,
+	  Catalan, Danish, Dutch, English, Estonian, Faeroese, Finnish,
+	  French, German, Galician, Irish, Icelandic, Italian, Norwegian,
+	  Portuguese, Spanish, and Swedish. Latin 9 is an update to
+	  Latin 1 (ISO 8859-1) that removes a handful of rarely used
+	  characters and instead adds support for Estonian, corrects the
+	  support for French and Finnish, and adds the new Euro character.
+	  If unsure, say Y.
+
+config NLS_KOI8_R
+	tristate "NLS KOI8-R (Russian)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the preferred Russian
+	  character set.
+
+config NLS_KOI8_U
+	tristate "NLS KOI8-U/RU (Ukrainian, Belarusian)"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the preferred Ukrainian
+	  (koi8-u) and Belarusian (koi8-ru) character sets.
+
+config NLS_MAC_ROMAN
+	tristate "Codepage macroman"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  much of Europe -- United Kingdom, Germany, Spain, Italy, and [add
+	  more countries here].
+
+	  If unsure, say Y.
+
+config NLS_MAC_CELTIC
+	tristate "Codepage macceltic"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  Celtic.
+
+	  If unsure, say Y.
+
+config NLS_MAC_CENTEURO
+	tristate "Codepage maccenteuro"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  Central Europe.
+
+	  If unsure, say Y.
+
+config NLS_MAC_CROATIAN
+	tristate "Codepage maccroatian"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  Croatian.
+
+	  If unsure, say Y.
+
+config NLS_MAC_CYRILLIC
+	tristate "Codepage maccyrillic"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  Cyrillic.
+
+	  If unsure, say Y.
+
+config NLS_MAC_GAELIC
+	tristate "Codepage macgaelic"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  Gaelic.
+
+	  If unsure, say Y.
+
+config NLS_MAC_GREEK
+	tristate "Codepage macgreek"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  Greek.
+
+	  If unsure, say Y.
+
+config NLS_MAC_ICELAND
+	tristate "Codepage maciceland"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  Iceland.
+
+	  If unsure, say Y.
+
+config NLS_MAC_INUIT
+	tristate "Codepage macinuit"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  Inuit.
+
+	  If unsure, say Y.
+
+config NLS_MAC_ROMANIAN
+	tristate "Codepage macromanian"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  Romanian.
+
+	  If unsure, say Y.
+
+config NLS_MAC_TURKISH
+	tristate "Codepage macturkish"
+	help
+	  The Apple HFS file system family can deal with filenames in
+	  native language character sets. These character sets are stored in
+	  so-called MAC codepages. You need to include the appropriate
+	  codepage if you want to be able to read/write these filenames on
+	  Mac partitions correctly. This does apply to the filenames
+	  only, not to the file contents. You can include several codepages;
+	  say Y here if you want to include the Mac codepage that is used for
+	  Turkish.
+
+	  If unsure, say Y.
+
+config NLS_UTF8
+	tristate "NLS UTF-8"
+	help
+	  If you want to display filenames with native language characters
+	  from the Microsoft FAT file system family or from JOLIET CD-ROMs
+	  correctly on the screen, you need to include the appropriate
+	  input/output character sets. Say Y here for the UTF-8 encoding of
+	  the Unicode/ISO9646 universal character set.
+
+config NLS_UCS2_UTILS
+	tristate
+
+endif # NLS