linux/arch/m68k
Greg Ungerer ecd60532e0 m68k: fix "bad page state" oops on ColdFire boot
Booting a ColdFire m68k core with MMU enabled causes a "bad page state"
oops since commit 1d40a5ea01 ("mm: mark pages in use for page tables"):

 BUG: Bad page state in process sh  pfn:01ce2
 page:004fefc8 count:0 mapcount:-1024 mapping:00000000 index:0x0
 flags: 0x0()
 raw: 00000000 00000000 00000000 fffffbff 00000000 00000100 00000200 00000000
 raw: 039c4000
 page dumped because: nonzero mapcount
 Modules linked in:
 CPU: 0 PID: 22 Comm: sh Not tainted 4.17.0-07461-g1d40a5ea01d5 #13

Fix by calling pgtable_page_dtor() in our __pte_free_tlb() code path,
so that the PG_table flag is cleared before we free the pte page.

Note that I had to change the type of pte_free() to be static from
extern. Otherwise you get a lot of warnings like this:

./arch/m68k/include/asm/mcf_pgalloc.h:80:2: warning: ‘pgtable_page_dtor’ is static but used in inline function ‘pte_free’ which is not static
  pgtable_page_dtor(page);
  ^

And making it static is consistent with our use of this in the other
m68k pgalloc definitions of pte_free().

Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
CC: Matthew Wilcox <willy@infradead.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
2018-07-02 10:05:13 +10:00
..
68000 m68k: Fix off-by-one calendar month 2018-05-22 10:31:50 +02:00
amiga treewide: Switch DEFINE_TIMER callbacks to struct timer_list * 2017-11-21 15:57:05 -08:00
apollo m68k: Fix off-by-one calendar month 2018-05-22 10:31:50 +02:00
atari m68k/atari: Modernize printing of kernel messages 2017-02-12 10:36:49 +01:00
bvme6000 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
coldfire m68k: fix ColdFire PCI config reads and writes 2018-05-28 09:45:27 +10:00
configs m68k/defconfig: Update defconfigs for v4.17-rc3 2018-05-22 10:31:53 +02:00
emu net: Remove usage of net_device last_rx member 2017-01-18 17:22:49 -05:00
fpsp040 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hp300 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ifpsp060 scripts/spelling.txt: add regsiter -> register spelling mistake 2017-05-08 17:15:13 -07:00
include m68k: fix "bad page state" oops on ColdFire boot 2018-07-02 10:05:13 +10:00
kernel m68k updates for 4.18 2018-06-04 15:50:22 -07:00
lib License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mac m68k/mac: Fix SWIM memory resource end address 2018-05-22 10:31:13 +02:00
math-emu m68k: Assorted spelling fixes 2016-07-03 14:05:28 +02:00
mm Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu 2018-06-05 10:51:30 -07:00
mvme16x m68k: Fix off-by-one calendar month 2018-05-22 10:31:50 +02:00
mvme147 m68k: Fix off-by-one calendar month 2018-05-22 10:31:50 +02:00
q40 m68k/q40: Modernize printing of kernel messages 2017-02-12 10:36:51 +01:00
sun3 m68k: Fix off-by-one calendar month 2018-05-22 10:31:50 +02:00
sun3x m68k: Fix off-by-one calendar month 2018-05-22 10:31:50 +02:00
tools/amiga License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.bus m68k: allow ColdFire PCI bus on MMU and non-MMU configuration 2018-05-28 09:45:27 +10:00
Kconfig.cpu m68k: allow ColdFire m5441x parts to run with MMU enabled 2017-11-06 08:25:20 +10:00
Kconfig.debug License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.devices License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.machine m68k: add Sysam stmark2 open board support 2017-11-07 13:27:38 +10:00
Makefile m68knommu: remove obsolete 68360 support 2016-03-07 10:07:17 +10:00
install.sh