Messages in this thread | | | Subject | [PATCH 00/38] Annotate hw config module params for future lockdown | From | David Howells <> | Date | Wed, 05 Apr 2017 17:56:53 +0100 |
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Here's a set of patches that annotate module parameters that configure hardware resources including ioports, iomem addresses, irq lines and dma channels.
This will be used in a future patch[*] to prohibit the use of such module parameters so that hardware can't be abused to gain access to the running kernel image.
[*] Which is in my "Kernel lockdown" series, posted separately for length reasons.
This is done by changing:
module_param(n, t, p) module_param_named(n, v, t, p) module_param_array(n, t, m, p)
to:
module_param_hw(n, t, hwtype, p) module_param_hw_named(n, v, t, hwtype, p) module_param_hw_array(n, t, hwtype, m, p)
where hwtype specifies the type of the resource being configured.
Note that the hwtype is compile checked, but not currently stored (the lockdown code probably won't require it). It is, however, there for future use.
Further note that the hwtype can also be used for grepping.
The patches can be found here also:
http://git.kernel.org/cgit/linux/kernel/git/dhowells/linux-fs.git/log/?h=hwparam
at tag:
hwparam-20170405
David --- David Howells (38): Annotate module params that specify hardware parameters (eg. ioport) Annotate hardware config module parameters in arch/x86/mm/ Annotate hardware config module parameters in drivers/char/ipmi/ Annotate hardware config module parameters in drivers/char/mwave/ Annotate hardware config module parameters in drivers/char/ Annotate hardware config module parameters in drivers/clocksource/ Annotate hardware config module parameters in drivers/cpufreq/ Annotate hardware config module parameters in drivers/gpio/ Annotate hardware config module parameters in drivers/i2c/ Annotate hardware config module parameters in drivers/iio/ Annotate hardware config module parameters in drivers/input/ Annotate hardware config module parameters in drivers/isdn/ Annotate hardware config module parameters in drivers/media/ Annotate hardware config module parameters in drivers/misc/ Annotate hardware config module parameters in drivers/mmc/host/ Annotate hardware config module parameters in drivers/net/appletalk/ Annotate hardware config module parameters in drivers/net/arcnet/ Annotate hardware config module parameters in drivers/net/can/ Annotate hardware config module parameters in drivers/net/ethernet/ Annotate hardware config module parameters in drivers/net/hamradio/ Annotate hardware config module parameters in drivers/net/irda/ Annotate hardware config module parameters in drivers/net/wan/ Annotate hardware config module parameters in drivers/net/wireless/ Annotate hardware config module parameters in drivers/parport/ Annotate hardware config module parameters in drivers/pci/hotplug/ Annotate hardware config module parameters in drivers/pcmcia/ Annotate hardware config module parameters in drivers/scsi/ Annotate hardware config module parameters in drivers/staging/media/ Annotate hardware config module parameters in drivers/staging/speakup/ Annotate hardware config module parameters in drivers/staging/vme/ Annotate hardware config module parameters in drivers/tty/ Annotate hardware config module parameters in drivers/video/ Annotate hardware config module parameters in drivers/watchdog/ Annotate hardware config module parameters in fs/pstore/ Annotate hardware config module parameters in sound/drivers/ Annotate hardware config module parameters in sound/isa/ Annotate hardware config module parameters in sound/oss/ Annotate hardware config module parameters in sound/pci/
arch/x86/mm/testmmiotrace.c | 2 - drivers/char/applicom.c | 4 +- drivers/char/ipmi/ipmi_si_intf.c | 14 +++--- drivers/char/mwave/mwavedd.c | 8 ++- drivers/clocksource/cs5535-clockevt.c | 2 - drivers/cpufreq/speedstep-smi.c | 2 - drivers/gpio/gpio-104-dio-48e.c | 4 +- drivers/gpio/gpio-104-idi-48.c | 4 +- drivers/gpio/gpio-104-idio-16.c | 4 +- drivers/gpio/gpio-gpio-mm.c | 2 - drivers/gpio/gpio-ws16c48.c | 4 +- drivers/i2c/busses/i2c-ali15x3.c | 2 - drivers/i2c/busses/i2c-elektor.c | 6 +- drivers/i2c/busses/i2c-parport-light.c | 4 +- drivers/i2c/busses/i2c-pca-isa.c | 4 +- drivers/i2c/busses/i2c-piix4.c | 2 - drivers/i2c/busses/i2c-sis5595.c | 2 - drivers/i2c/busses/i2c-viapro.c | 2 - drivers/i2c/busses/scx200_acb.c | 2 - drivers/iio/adc/stx104.c | 2 - drivers/iio/dac/cio-dac.c | 2 - drivers/input/mouse/inport.c | 2 - drivers/input/mouse/logibm.c | 2 - drivers/input/touchscreen/mk712.c | 4 +- drivers/isdn/hardware/avm/b1isa.c | 4 +- drivers/isdn/hardware/avm/t1isa.c | 4 +- drivers/isdn/hisax/config.c | 10 ++-- drivers/media/pci/zoran/zoran_card.c | 2 - drivers/media/rc/serial_ir.c | 10 ++-- drivers/misc/dummy-irq.c | 2 - drivers/mmc/host/wbsd.c | 8 ++- drivers/net/appletalk/cops.c | 6 +- drivers/net/appletalk/ltpc.c | 6 +- drivers/net/arcnet/com20020-isa.c | 4 +- drivers/net/arcnet/com90io.c | 4 +- drivers/net/arcnet/com90xx.c | 4 +- drivers/net/can/cc770/cc770_isa.c | 8 ++- drivers/net/can/sja1000/sja1000_isa.c | 8 ++- drivers/net/ethernet/3com/3c509.c | 2 - drivers/net/ethernet/3com/3c59x.c | 4 +- drivers/net/ethernet/8390/ne.c | 4 +- drivers/net/ethernet/8390/smc-ultra.c | 4 +- drivers/net/ethernet/8390/wd.c | 8 ++- drivers/net/ethernet/amd/lance.c | 6 +- drivers/net/ethernet/amd/ni65.c | 6 +- drivers/net/ethernet/cirrus/cs89x0.c | 6 +- drivers/net/ethernet/dec/tulip/de4x5.c | 2 - drivers/net/ethernet/hp/hp100.c | 2 - drivers/net/ethernet/realtek/atp.c | 4 +- drivers/net/ethernet/smsc/smc9194.c | 4 +- drivers/net/hamradio/baycom_epp.c | 2 - drivers/net/hamradio/baycom_par.c | 2 - drivers/net/hamradio/baycom_ser_fdx.c | 4 +- drivers/net/hamradio/baycom_ser_hdx.c | 4 +- drivers/net/hamradio/dmascc.c | 2 - drivers/net/irda/ali-ircc.c | 6 +- drivers/net/irda/nsc-ircc.c | 6 +- drivers/net/irda/smsc-ircc2.c | 10 ++-- drivers/net/irda/w83977af_ir.c | 4 +- drivers/net/wan/cosa.c | 6 +- drivers/net/wan/hostess_sv11.c | 6 +- drivers/net/wan/sbni.c | 4 +- drivers/net/wan/sealevel.c | 8 ++- drivers/net/wireless/cisco/airo.c | 4 +- drivers/parport/parport_pc.c | 8 ++- drivers/pci/hotplug/cpcihp_generic.c | 2 - drivers/pcmcia/i82365.c | 8 ++- drivers/pcmcia/tcic.c | 8 ++- drivers/scsi/aha152x.c | 4 +- drivers/scsi/aha1542.c | 2 - drivers/scsi/g_NCR5380.c | 8 ++- drivers/scsi/gdth.c | 2 - drivers/scsi/qlogicfas.c | 4 +- drivers/staging/media/lirc/lirc_sir.c | 4 +- drivers/staging/speakup/speakup_acntpc.c | 2 - drivers/staging/speakup/speakup_dtlk.c | 2 - drivers/staging/speakup/speakup_keypc.c | 2 - drivers/staging/vme/devices/vme_pio2_core.c | 8 ++- drivers/tty/cyclades.c | 4 +- drivers/tty/moxa.c | 2 - drivers/tty/mxser.c | 2 - drivers/tty/rocket.c | 10 ++-- drivers/tty/serial/8250/8250_core.c | 4 +- drivers/tty/synclink.c | 6 +- drivers/video/fbdev/arcfb.c | 8 ++- drivers/video/fbdev/n411.c | 6 +- drivers/watchdog/cpu5wdt.c | 2 - drivers/watchdog/eurotechwdt.c | 4 +- drivers/watchdog/pc87413_wdt.c | 2 - drivers/watchdog/sc1200wdt.c | 2 - drivers/watchdog/wdt.c | 4 +- fs/pstore/ram.c | 2 - include/linux/moduleparam.h | 65 +++++++++++++++++++++++++++ sound/drivers/mpu401/mpu401.c | 4 +- sound/drivers/mtpav.c | 4 +- sound/drivers/serial-u16550.c | 4 +- sound/isa/ad1848/ad1848.c | 6 +- sound/isa/adlib.c | 2 - sound/isa/cmi8328.c | 12 ++--- sound/isa/cmi8330.c | 20 ++++---- sound/isa/cs423x/cs4231.c | 12 ++--- sound/isa/cs423x/cs4236.c | 18 ++++--- sound/isa/es1688/es1688.c | 12 ++--- sound/isa/es18xx.c | 12 ++--- sound/isa/galaxy/galaxy.c | 16 +++---- sound/isa/gus/gusclassic.c | 8 ++- sound/isa/gus/gusextreme.c | 16 +++---- sound/isa/gus/gusmax.c | 8 ++- sound/isa/gus/interwave.c | 10 ++-- sound/isa/msnd/msnd_pinnacle.c | 20 ++++---- sound/isa/opl3sa2.c | 16 +++---- sound/isa/opti9xx/miro.c | 14 +++--- sound/isa/opti9xx/opti92x-ad1848.c | 14 +++--- sound/isa/sb/jazz16.c | 12 ++--- sound/isa/sb/sb16.c | 14 +++--- sound/isa/sb/sb8.c | 6 +- sound/isa/sc6000.c | 12 ++--- sound/isa/sscape.c | 12 ++--- sound/isa/wavefront/wavefront.c | 18 ++++--- sound/oss/ad1848.c | 8 ++- sound/oss/aedsp16.c | 12 ++--- sound/oss/mpu401.c | 4 +- sound/oss/msnd_pinnacle.c | 20 ++++---- sound/oss/opl3.c | 2 - sound/oss/pas2_card.c | 18 ++++--- sound/oss/pss.c | 14 +++--- sound/oss/sb_card.c | 10 ++-- sound/oss/trix.c | 18 ++++--- sound/oss/uart401.c | 4 +- sound/oss/uart6850.c | 4 +- sound/oss/waveartist.c | 8 ++- sound/pci/als4000.c | 2 - sound/pci/cmipci.c | 6 +- sound/pci/ens1370.c | 2 - sound/pci/riptide/riptide.c | 6 +- sound/pci/sonicvibes.c | 2 - sound/pci/via82xx.c | 2 - sound/pci/ymfpci/ymfpci.c | 6 +- 138 files changed, 493 insertions(+), 430 deletions(-)
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