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0cde56e028
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Greentime Hu 0cde56e028 nds32: Fix a kernel panic issue because of wrong frame pointer access. 
It can make sure that trace_hardirqs_off/trace_hardirqs_on can get a correct
return address by frame pointer through __builtin_return_address() in this fix.

Unable to handle kernel paging request at virtual address fffffffc
pgd = 3c42e9cf
[fffffffc] *pgd=02a9c000

Internal error: Oops: 1 [#1]
Modules linked in:
CPU: 0
PC is at trace_hardirqs_off+0x78/0xec
LP is at common_exception_handler+0xda/0xf4
pc : [<b23ea5a4>]    lp : [<b2352eba>]    Tainted: G        W
sp : ada60ab0  fp : efcaff48  gp : 3a020490
r25: efcb0000  r24: 00000000
r23: 00000000  r22: 00000000  r21: 00000000  r20: 000700c1
r19: 000700ca  r18: 3a21b018  r17: 00000001  r16: 00000002
r15: 00000001  r14: 0000002a  r13: 3a00a804  r12: ada60ab0
r11: 3a113af8  r10: 3a01c530  r9 : 3a124404  r8 : 00120f9c
r7 : b2352eba  r6 : 00000000  r5 : 3a126b58  r4 : 00000000
r3 : 3a1726a8  r2 : b2921000  r1 : 00000000  r0 : 00000000
  IRQs off  Segment user
Process init (pid: 1, stack limit = 0x069d7f15)
Stack: (0xada60ab0 to 0xada61000)
Stack: 0aa0:                                     00000000 00000003 3a110000 0011f000
Stack: 0ac0: 00000005 00000000 00000000 00000000 ada60b10 3a01fe68 ada60b0c ada60b08
Stack: 0ae0: 00000000 ada60ab8 ada60b30 3a020550 00000000 00000001 3a11c2f8 3a01c6e8
Stack: 0b00: 3a01cb80 fffffba8 3a113af8 3a21b018 3a122c28 00003ec4 00000165 00000000
Stack: 0b20: 3a126aec 0000006c 00000000 00000001 3a01fe68 00000000 00000003 00000000
Stack: 0b40: 00000001 000003f8 3a020930 3a01c530 00000008 ada60c18 3a020490 3a003120
Stack: 0b60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0b80: 00000000 00000000 00000000 00000000 ffff8000 00000000 00000000 00000000
Stack: 0ba0: 00000000 00000001 3a020550 00000000 3a01d020 00000000 fffff000 fffff000
Stack: 0bc0: 00000000 00000000 00000000 00000000 ada60f2c 00000000 00000001 00000000
Stack: 0be0: 00000000 00000000 3a01fe68 fffffab0 00008034 00000008 3a0010cc 3a01fe68
Stack: 0c00: 00000000 00000000 00000001 ada60c88 3a020490 3a0139d4 0009dc6f 00000000
Stack: 0c20: 00000000 00000000 ada60fce fffff000 00000000 0000ebe0 3a020038 3a020550
Stack: 0c40: ada60f20 ada60c90 3a0007f0 3a0002a8 ada60c8c 00000000 00000000 ada60c88
Stack: 0c60: 3a020490 3a004570 00000000 00000000 ada60f20 3a0007f0 3a000000 00000000
Stack: 0c80: 3a020490 3a004850 00000000 3a013f24 3a000000 00000000 3a01ff44 00000000
Stack: 0ca0: 00000000 00000000 00000000 00000000 00000000 00000000 3a01ff84 3a01ff7c
Stack: 0cc0: 3a01ff4c 3a01ff5c 3a01ff64 3a01ff9c 3a01ffa4 3a01ffac 3a01ff6c 3a01ff74
Stack: 0ce0: 00000000 00000000 3a01ff44 00000000 00000000 00000000 00000000 00000000
Stack: 0d00: 3a01ff8c 00000000 00000000 3a01ff94 00000000 00000000 00000000 00000000
Stack: 0d20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0d40: 3a01ffbc 3a01ffb4 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0d60: 00000000 00000000 00000000 00000000 00000000 3a01ffc4 00000000 00000000
Stack: 0d80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0da0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0dc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 3a01ff54
Stack: 0de0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0e00: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0e20: 00000000 00000004 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0e40: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0e60: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0e80: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0ea0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Stack: 0ec0: 00000000 00000000 00000000 00000000 ffffffff 00000000 00000000 00000000
Stack: 0ee0: 00000000 00000000 00000000 00000000 ada60f20 00000000 00000000 00000000
Stack: 0f00: 00000000 00000000 00000000 00000000 00000000 00000000 3a020490 3a000b24
Stack: 0f20: 00000001 ada60fde 00000000 ada60fe4 ada60feb 00000000 00000021 3a038000
Stack: 0f40: 00000010 0009dc6f 00000006 00001000 00000011 00000064 00000003 00008034
Stack: 0f60: 00000004 00000020 00000005 00000008 00000007 3a000000 00000008 00000000
Stack: 0f80: 00000009 0000ebe0 0000000b 00000000 0000000c 00000000 0000000d 00000000
Stack: 0fa0: 0000000e 00000000 00000017 00000000 00000019 ada60fce 0000001f ada60ff6
Stack: 0fc0: 00000000 00000000 00000000 b5010000 fa839914 23b5dd89 a2aea540 692fc82e
Stack: 0fe0: 0074696e 454d4f48 54002f3d 3d4d5245 756e696c 692f0078 0074696e 00000000
CPU: 0 PID: 1 Comm: init Tainted: G        W         4.18.0-00015-g1888b64a2558-dirty #112
Hardware name: andestech,ae3xx (DT)
Call Trace:
[<b27a8e34>] dump_stack+0x2c/0x38
[<b2354874>] die+0x128/0x18c
[<b2356f4c>] do_page_fault+0x3b8/0x4e0
[<b2352ed4>] ret_from_exception+0x0/0x10
[<b2352eba>] common_exception_handler+0xda/0xf4

Signed-off-by: Greentime Hu <greentime@andestech.com>
2018-09-04 14:45:19 +08:00
arch nds32: Fix a kernel panic issue because of wrong frame pointer access. 2018-09-04 14:45:19 +08:00
block block: bsg: move atomic_t ref_count variable to refcount API 2018-08-27 19:17:02 -06:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto DMAengine updates for v4.19-rc1 2018-08-18 15:55:59 -07:00
Documentation linux-watchdog 4.19-rc2 tag 2018-09-01 13:17:15 -07:00
drivers Devicetree updates for 4.19-rc2: 2018-09-02 10:56:01 -07:00
firmware kbuild: remove all dummy assignments to obj- 2017-11-18 11:46:06 +09:00
fs Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-09-02 09:41:45 -07:00
include Devicetree updates for 4.19-rc2: 2018-09-02 10:56:01 -07:00
init Kbuild updates for v4.19 (2nd) 2018-08-25 13:40:38 -07:00
ipc ipc/util.c: update return value of ipc_getref from int to bool 2018-08-22 10:52:52 -07:00
kernel Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-09-02 10:09:35 -07:00
lib Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-09-02 09:41:45 -07:00
LICENSES LICENSES: Add Linux-OpenIB license text 2018-04-27 16:41:53 -06:00
mm notifier: Remove notifier header file wherever not used 2018-08-30 12:56:40 +02:00
net Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-09-02 09:41:45 -07:00
samples samples/bpf: all XDP samples should unload xdp/bpf prog on SIGTERM 2018-08-16 21:55:32 +02:00
scripts nds32/ftrace: Add RECORD_MCOUNT support 2018-09-04 14:45:18 +08:00
security + Cleanups 2018-08-24 13:00:33 -07:00
sound Merge branch 'akpm' (patches from Andrew) 2018-08-23 19:20:12 -07:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-08-27 11:59:39 -07:00
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/ 2018-08-22 23:21:44 +09:00
virt ARM: Support for Group0 interrupts in guests, Cache management 2018-08-22 13:52:44 -07:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Kbuild updates for v4.17 (2nd) 2018-04-15 17:21:30 -07:00
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
COPYING COPYING: use the new text with points to the license files 2018-03-23 12:41:45 -06:00
CREDITS 9p: remove Ron Minnich from MAINTAINERS 2018-08-17 16:20:26 -07:00
Kbuild Kbuild updates for v4.15 2017-11-17 17:45:29 -08:00
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS Fix up libata MAINTAINERS entry 2018-08-27 08:07:25 -07:00
Makefile Linux 4.19-rc2 2018-09-02 14:37:30 -07:00
README Docs: Added a pointer to the formatted docs to README 2018-03-21 09:02:53 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.