linux-next

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History

Lv Zheng 83848fbe7e ACPICA: Tables: Mechanism to handle late stage acpi_get_table() imbalance

Considering this case:

 1. A program opens a sysfs table file 65535 times, it can increase
    validation_count and first increment cause the table to be mapped:

     validation_count = 65535

 2. AML execution causes "Load" to be executed on the same
    table, this time it cannot increase validation_count, so
    validation_count remains:

      validation_count = 65535

 3. The program closes sysfs table file 65535 times, it can decrease
    validation_count and the last decrement cause the table to be
    unmapped:

     validation_count = 0

 4. AML code still accessing the loaded table, kernel crash can be
    observed.

To prevent that from happening, add a validation_count threashold.
When it is reached, the validation_count can no longer be
incremented/decremented to invalidate the table descriptor (means
preventing table unmappings)

Note that code added in acpi_tb_put_table() is actually a no-op but
changes the warning message into a "warn once" one. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
[ rjw: Changelog, comments ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

2017-06-12 14:09:29 +02:00

acapps.h

ACPICA: Tools: Update common signon, remove compilation bit width

2017-02-09 14:47:42 +01:00

accommon.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acconvert.h

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

acdebug.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acdispat.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acevents.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acglobal.h

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

achware.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acinterp.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

aclocal.h

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

acmacros.h

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

acnamesp.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acobject.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acopcode.h

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

acparser.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acpredef.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acresrc.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acstruct.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

actables.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

acutils.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

amlcode.h

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

amlresrc.h

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbcmds.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbconvert.c

scripts/spelling.txt: add "an union" pattern and fix typo instances

2017-02-27 18:43:46 -08:00

dbdisply.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbexec.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbfileio.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbhistry.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbinput.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbmethod.c

ACPICA: debugger: fix memory leak on Pathname

2017-04-27 00:31:00 +02:00

dbnames.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbobject.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbstats.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbtest.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbutils.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dbxface.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

dsargs.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dscontrol.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

dsdebug.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dsfield.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dsinit.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dsmethod.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dsmthdat.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

dsobject.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

dsopcode.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

dsutils.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

dswexec.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

dswload2.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

dswload.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dswscope.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

dswstate.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evevent.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evglock.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evgpe.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evgpeblk.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evgpeinit.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evgpeutil.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evhandler.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evmisc.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evregion.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evrgnini.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evsci.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evxface.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evxfevnt.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evxfgpe.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

evxfregn.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exconcat.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exconfig.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exconvrt.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

excreate.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exdebug.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exdump.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exfield.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exfldio.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exmisc.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

exmutex.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exnames.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

exoparg1.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

exoparg2.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

exoparg3.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exoparg6.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

exprep.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exregion.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exresnte.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exresolv.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

exresop.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exstore.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

exstoren.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

exstorob.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exsystem.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

extrace.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

exutils.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

hwacpi.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

hwesleep.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

hwgpe.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

hwpci.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

hwregs.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

hwsleep.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

hwtimer.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

hwvalid.c

ACPICA: Fix several incorrect invocations of ACPICA return macro

2017-04-27 00:31:00 +02:00

hwxface.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

hwxfsleep.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

Makefile

ACPICA: Add non-linux host build support

2017-04-11 22:11:09 +02:00

nsaccess.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

nsalloc.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsarguments.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsconvert.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsdump.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsdumpdv.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nseval.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsinit.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsload.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsnames.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsobject.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsparse.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nspredef.c

scripts/spelling.txt: add "an union" pattern and fix typo instances

2017-02-27 18:43:46 -08:00

nsprepkg.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsrepair2.c

ACPICA: Update for automatic repair code for objects returned by evaluate_object

2017-04-27 00:31:00 +02:00

nsrepair.c

ACPICA: Update for automatic repair code for objects returned by evaluate_object

2017-04-27 00:31:00 +02:00

nssearch.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsutils.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

nswalk.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsxfeval.c

scripts/spelling.txt: add "an union" pattern and fix typo instances

2017-02-27 18:43:46 -08:00

nsxfname.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

nsxfobj.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

psargs.c

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

psloop.c

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

psobject.c

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

psopcode.c

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

psopinfo.c

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

psparse.c

ACPICA: Cleanup AML opcode definitions, no functional change

2017-04-27 00:31:00 +02:00

psscope.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

pstree.c

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

psutils.c

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

pswalk.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

psxface.c

ACPICA: Source tree: Update copyright notices to 2017

2017-02-09 14:47:02 +01:00

rsaddr.c

2017-02-09 14:47:02 +01:00

rscalc.c

2017-02-09 14:47:02 +01:00

rscreate.c

2017-02-09 14:47:02 +01:00

rsdump.c

2017-02-09 14:47:02 +01:00

rsdumpinfo.c

2017-02-09 14:47:02 +01:00

rsinfo.c

2017-02-09 14:47:02 +01:00

rsio.c

2017-02-09 14:47:02 +01:00

rsirq.c

2017-02-09 14:47:02 +01:00

rslist.c

2017-02-09 14:47:02 +01:00

rsmemory.c

2017-02-09 14:47:02 +01:00

rsmisc.c

2017-02-09 14:47:02 +01:00

rsserial.c

2017-02-09 14:47:02 +01:00

rsutils.c

2017-02-09 14:47:02 +01:00

rsxface.c

2017-02-09 14:47:02 +01:00

tbdata.c

2017-02-09 14:47:02 +01:00

tbfadt.c

2017-02-09 14:47:02 +01:00

tbfind.c

2017-02-09 14:47:02 +01:00

tbinstal.c

2017-02-09 14:47:02 +01:00

tbprint.c

2017-02-09 14:47:02 +01:00

tbutils.c

ACPICA: Tables: Mechanism to handle late stage acpi_get_table() imbalance

2017-06-12 14:09:29 +02:00

tbxface.c

2017-02-09 14:47:02 +01:00

tbxfload.c

2017-02-09 14:47:02 +01:00

tbxfroot.c

2017-02-09 14:47:02 +01:00

utaddress.c

2017-02-09 14:47:02 +01:00

utalloc.c

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

utascii.c

2017-02-09 14:47:02 +01:00

utbuffer.c

2017-02-09 14:47:02 +01:00

utcache.c

ACPICA: Local cache support: Allow small cache objects

2017-04-27 00:31:01 +02:00

utcopy.c

2017-02-09 14:47:02 +01:00

utdebug.c

ACPICA: iasl: add ASL conversion tool

2017-04-28 21:56:10 +02:00

utdecode.c

2017-02-09 14:47:02 +01:00

utdelete.c

2017-02-09 14:47:02 +01:00

uterror.c

2017-02-09 14:47:02 +01:00

uteval.c

2017-02-09 14:47:02 +01:00

utexcep.c

2017-02-09 14:47:02 +01:00

utglobal.c

2017-02-09 14:47:02 +01:00

uthex.c

2017-02-09 14:47:02 +01:00

utids.c

2017-02-09 14:47:02 +01:00

utinit.c

2017-02-09 14:47:02 +01:00

utlock.c

2017-02-09 14:47:02 +01:00

utmath.c

2017-02-09 14:47:02 +01:00

utmisc.c

2017-02-09 14:47:02 +01:00

utmutex.c

2017-02-09 14:47:02 +01:00

utnonansi.c

2017-02-09 14:47:02 +01:00

utobject.c

2017-02-09 14:47:02 +01:00

utosi.c

2017-02-09 14:47:02 +01:00

utownerid.c

2017-02-09 14:47:02 +01:00

utpredef.c

2017-02-09 14:47:02 +01:00

utprint.c

2017-02-09 14:47:02 +01:00

utresrc.c

Revert "ACPICA: Disassembler: Enhance resource descriptor detection"

2017-06-05 23:33:39 +02:00

utstate.c

2017-02-09 14:47:02 +01:00

utstring.c

2017-02-09 14:47:02 +01:00

utstrtoul64.c

2017-02-09 14:47:02 +01:00

uttrack.c

2017-02-09 14:47:02 +01:00

utuuid.c

2017-02-09 14:47:02 +01:00

utxface.c

2017-02-09 14:47:02 +01:00

utxferror.c

ACPICA: Update some function headers, no funtional change

2017-04-27 00:30:59 +02:00

utxfinit.c

2017-02-09 14:47:02 +01:00

utxfmutex.c

2017-02-09 14:47:02 +01:00