my demo kext can't be load

App & System Services Core OS
lvchangbao OP
Created Sep ’15
Replies 5
Boosts 0
Views 3.5k
Participants 4

i study how coding a kext . but my project kext can't code sign and can't be load .so , i send an email to apple developer id . they respond me like this :



KEXT signing is intended for signing commercially shipping kexts or projects broadly distributed in a large organization. The use you describe does not need a signed kext.


You can turn off kext signature checking for sample code and development use as described in the OS X 10.10 Kernel Debug Kit located at < https://developer.apple.com/downloads/>


"In order to load unsigned kexts, the system must have "KEXT Developer Mode" enabled by adding the "kext-dev- mode=1" boot-arg. The following command (followed by a reboot) would be suitable to prepare a system for testing non-production kexts:

sudo nvram boot-args="debug=0x146 kext-dev-mode=1"

Once this is done, the machine will be able to load any valid kext; signatures will still be checked, but a failed verification will just result in a log message. Note: This applies to kexts that contain a binary, as well as codeless

(plist-only) kexts.

The system will remain in developer mode until you manually remove the boot-arg or clear nvram and reboot. You can exit developer mode by redefining the boot-arg to your previous settings, or clear your boot-args as follows:

sudo nvram -d boot-args

Apple recommends that you make use of KEXT Developer Mode rather than use your Developer ID certificate to sign drivers while they are under development. Ideally you should sign a driver using a Developer ID certificate only when it reaches its final stages of testing and is being evaluated for release to customers.


Please note: This address is only for requesting kext signing. If you need additional support please visit the Apple Developer Forums at < https://forums.developer.apple.com/community/core-os/kernel> or open a DTS Technical Support Incident following the steps posted here: https://developer.apple.com/support/technical/submit/
so , i use command sudo nvram boot-args="debug=0x146 kext-dev-mode=1" , and reboot my mac
and
1 use xcode to create a demo generic kernel extension (dgkexttest.kext )
2 build it
3 use command
(1)sudo cp -R /Users/mac-agile/Desktop/dgkexttest.kext /tmp
or sudo cp -R /Users/mac-agile/Desktop/dgkexttest.kext /System/Library/Extensions
(2) kextutil -n -t /tmp/dgkexttest.kext or kextutil -n -t /System/Library/Extensions/dgkexttest.kext
4 but , it show like this

Diagnostics for /tmp/dgkexttest.kext:

Code Signing Failure: not code signed

/tmp/dgkexttest.kext appears to be loadable (including linkage for on-disk libraries).


5 then i check by use "kextstat"


system no load my demo dgkexttest.kext


so ,any one can help me ,how to do ?

my terminal info ：

Last login: Wed Sep 2 11:30:27 on console


mac-agiledeMac-mini:~ mac-agile$ sudo cp -R /Users/mac-agile/Desktop/dgkexttest.kext /tmp

Password:

mac-agiledeMac-mini:~ mac-agile$ kextutil -n -t /tmp/dgkexttest.kext

Diagnostics for /tmp/dgkexttest.kext:

Code Signing Failure: not code signed

/tmp/dgkexttest.kext appears to be loadable (including linkage for on-disk libraries).

mac-agiledeMac-mini:~ mac-agile$ kextstat


Index Refs Address Size Wired Name (Version) <Linked Against>

1 78 0xffffff7f80a3e000 0x8c50 0x8c50 com.apple.kpi.bsd (14.5.0)

2 7 0xffffff7f80da3000 0x28c0 0x28c0 com.apple.kpi.dsep (14.5.0)

3 95 0xffffff7f80a03000 0x20500 0x20500 com.apple.kpi.iokit (14.5.0)

4 101 0xffffff7f80a24000 0xbf50 0xbf50 com.apple.kpi.libkern (14.5.0)

5 87 0xffffff7f80a00000 0x2d50 0x2d50 com.apple.kpi.mach (14.5.0)

6 45 0xffffff7f80a30000 0x8590 0x8590 com.apple.kpi.private (14.5.0)

7 60 0xffffff7f80a39000 0x4900 0x4900 com.apple.kpi.unsupported (14.5.0)

8 4 0xffffff7f80da9000 0xa0000 0xa0000 com.apple.kec.corecrypto (1.0) <7 6 5 4 3 1>

9 0 0xffffff7f80ee1000 0xc000 0xc000 com.apple.kec.pthread (1) <7 6 5 4 1>

10 1 0xffffff7f80efe000 0x9000 0x9000 com.apple.kec.Libm (1) <4>

11 20 0xffffff7f813a4000 0x9000 0x9000 com.apple.iokit.IOACPIFamily (1.4) <7 6 4 3>

12 27 0xffffff7f80b24000 0x2f000 0x2f000 com.apple.iokit.IOPCIFamily (2.9) <7 6 5 4 3>

13 2 0xffffff7f828be000 0x5f000 0x5f000 com.apple.driver.AppleACPIPlatform (3.1) <12 11 7 6 5 4 3 1>

14 1 0xffffff7f810af000 0xb000 0xb000 com.apple.driver.AppleFDEKeyStore (28.30) <8 7 6 5 4 3 1>

15 3 0xffffff7f8139d000 0x7000 0x7000 com.apple.iokit.IOReportFamily (31) <5 4 3>

16 4 0xffffff7f80a47000 0x26000 0x26000 com.apple.iokit.IOStorageFamily (2.0) <7 6 5 4 3 1>

17 0 0xffffff7f814dd000 0x19000 0x19000 com.apple.driver.DiskImages (398) <16 7 6 5 4 3 1>

18 1 0xffffff7f822f5000 0xf000 0xf000 com.apple.driver.AppleCredentialManager (1.0) <7 5 4 3 1>

19 2 0xffffff7f80eae000 0xd000 0xd000 com.apple.driver.AppleMobileFileIntegrity (1.0.5) <7 6 5 4 3 2 1>

20 0 0xffffff7f82304000 0x23000 0x23000 com.apple.driver.AppleKeyStore (2) <19 18 8 7 6 5 4 3 1>

21 0 0xffffff7f80da6000 0x2000 0x2000 com.apple.security.TMSafetyNet (8) <7 6 5 4 2 1>

22 2 0xffffff7f80ebb000 0x5000 0x5000 com.apple.kext.AppleMatch (1.0.0d1) <4 1>

23 1 0xffffff7f80ec0000 0x17000 0x17000 com.apple.security.sandbox (300.0) <22 19 7 6 5 4 3 2 1>

24 0 0xffffff7f80ed7000 0x9000 0x9000 com.apple.security.quarantine (3) <23 22 7 6 5 4 2 1>

25 0 0xffffff7f82934000 0x8000 0x8000 com.apple.nke.applicationfirewall (161) <7 6 5 4 3 1>

26 0 0xffffff7f82891000 0x3000 0x3000 com.apple.driver.AppleAPIC (1.7) <4 3>

27 2 0xffffff7f8132a000 0x4000 0x4000 com.apple.iokit.IOSMBusFamily (1.1) <5 4 3>

28 0 0xffffff7f82923000 0x7000 0x7000 com.apple.driver.AppleACPIEC (3.1) <27 13 11 5 4 3>

29 0 0xffffff7f82208000 0x4000 0x4000 com.apple.driver.AppleSMBIOS (2.1) <7 4 3>

30 0 0xffffff7f82585000 0x3000 0x3000 com.apple.driver.AppleHPET (1.8) <11 7 5 4 3>

31 3 0xffffff7f810ba000 0x76000 0x76000 com.apple.iokit.IOHIDFamily (2.0.0) <14 7 6 5 4 3 2 1>

32 0 0xffffff7f8292d000 0x4000 0x4000 com.apple.driver.AppleACPIButtons (3.1) <31 13 11 7 6 5 4 3 1>

33 1 0xffffff7f825fa000 0x5000 0x5000 com.apple.driver.AppleEFIRuntime (2.0) <7 6 5 4 3>

34 0 0xffffff7f82236000 0x8000 0x8000 com.apple.driver.AppleRTC (2.0) <11 5 4 3 1>

35 1 0xffffff7f825ff000 0xb000 0xb000 com.apple.driver.AppleEFINVRAM (2.0) <33 7 6 5 4 3 1>

37 10 0xffffff7f81027000 0x65000 0x65000 com.apple.iokit.IOUSBFamily (720.4.4) <12 7 5 4 3 1>

38 0 0xffffff7f81162000 0x22000 0x22000 com.apple.driver.AppleUSBXHCI (710.4.11) <37 12 7 5 4 3 1>

40 2 0xffffff7f816be000 0x16000 0x16000 com.apple.iokit.IOAHCIFamily (2.7.5) <5 4 3 1>

41 0 0xffffff7f82896000 0x1b000 0x1b000 com.apple.driver.AppleAHCIPort (3.1.2) <40 12 5 4 3 1>

43 7 0xffffff7f80fe8000 0x2c000 0x2c000 com.apple.iokit.IONetworkingFamily (3.2) <7 6 5 4 3 1>

44 2 0xffffff7f8143d000 0x7000 0x7000 com.apple.driver.mDNSOffloadUserClient (1.0.1b8) <43 4 3 1>

45 1 0xffffff7f81444000 0x7000 0x7000 com.apple.iokit.IOEthernetAVBController (1.0.3b3) <43 5 4 3 1>

46 0 0xffffff7f8144b000 0x39000 0x39000 com.apple.iokit.AppleBCM5701Ethernet (10.1.3) <45 44 43 12 11 6 5 4 3 1>

47 1 0xffffff7f81716000 0xab000 0xab000 com.apple.iokit.IO80211Family (730.60) <43 8 7 6 5 4 3 1>

48 0 0xffffff7f817c9000 0x5e6000 0x5e6000 com.apple.driver.AirPort.Brcm4360 (930.37.3) <47 44 43 12 7 6 5 4 3 1>

49 0 0xffffff7f8221b000 0x13000 0x13000 com.apple.driver.AppleSDXC (1.6.5) <16 15 12 5 4 3 1>

50 5 0xffffff7f8121b000 0xde000 0xde000 com.apple.iokit.IOThunderboltFamily (4.2.2) <5 4 3 1>

51 0 0xffffff7f82125000 0x1b000 0x1b000 com.apple.driver.AppleThunderboltNHI (3.1.7) <50 12 11 5 4 3 1>

52 0 0xffffff7f82113000 0x5000 0x5000 com.apple.driver.AppleThunderboltPCIDownAdapter (2.0.2) <50 12 5 4 3 1>

53 1 0xffffff7f82167000 0xf000 0xf000 com.apple.driver.AppleThunderboltDPAdapterFamily (4.0.6) <50 11 5 4 3 1>

54 0 0xffffff7f82191000 0x6000 0x6000 com.apple.driver.AppleThunderboltDPInAdapter (4.0.6) <53 50 5 4 3 1>

56 0 0xffffff7f816f1000 0x18000 0x18000 com.apple.iokit.IOAHCIBlockStorage (2.7.1) <40 16 6 5 4 3 1>

57 0 0xffffff7f81ff5000 0x3000 0x3000 com.apple.driver.XsanFilter (404) <16 5 4 3 1>

58 0 0xffffff7f81f26000 0xa000 0xa000 com.apple.BootCache (36) <7 6 5 4 3 1>

59 0 0xffffff7f8286a000 0x6000 0x6000 com.apple.AppleFSCompression.AppleFSCompressionTypeZlib (1.0.0) <6 4 3 2 1>

60 0 0xffffff7f82872000 0x3000 0x3000 com.apple.AppleFSCompression.AppleFSCompressionTypeDataless (1.0.0d1) <7 6 4 3 2 1>

62 0 0xffffff7f811c7000 0x1c000 0x1c000 com.apple.driver.AppleUSBHub (705.4.2) <37 5 4 3 1>

63 1 0xffffff7f81158000 0xa000 0xa000 com.apple.driver.AppleUSBComposite (705.4.9) <37 4 3 1>

64 1 0xffffff7f8114e000 0xa000 0xa000 com.apple.iokit.IOUSBHIDDriver (705.4.0) <37 31 5 4 3 1>

65 0 0xffffff7f82327000 0x4000 0x4000 com.apple.driver.AppleIRController (327.5) <64 37 31 5 4 3>

66 0 0xffffff7f811c0000 0x7000 0x7000 com.apple.driver.AppleUSBMergeNub (705.4.0) <63 37 4 3 1>

67 0 0xffffff7f80ae2000 0x2b000 0x2b000 com.apple.iokit.IOSCSIArchitectureModelFamily (3.7.5) <5 4 3 1>

68 12 0xffffff7f81486000 0x3b000 0x3b000 com.apple.iokit.IOGraphicsFamily (2.4.1) <12 7 5 4 3 1>

69 2 0xffffff7f82394000 0x6f000 0x6f000 com.apple.iokit.IOAcceleratorFamily2 (156.16) <68 12 7 6 5 4 3 1>

70 3 0xffffff7f8249b000 0x7000 0x7000 com.apple.AppleGraphicsDeviceControl (3.10.25) <7 6 5 4 3 1>

71 0 0xffffff7f824a2000 0x4b000 0x4b000 com.apple.driver.AppleIntelFramebufferAzul (10.0.6) <70 69 68 15 12 11 7 6 5 4 3 1>

72 2 0xffffff7f814cd000 0x10000 0x10000 com.apple.iokit.IONDRVSupport (2.4.1) <68 12 7 5 4 3>

73 1 0xffffff7f81315000 0x13000 0x13000 com.apple.iokit.IOSurface (97.4) <7 5 4 3 1>

74 0 0xffffff7f82411000 0x60000 0x60000 com.apple.driver.AppleIntelHD5000Graphics (10.0.6) <73 69 68 12 7 6 5 4 3 1>

77 0 0xffffff7f82145000 0x17000 0x17000 com.apple.driver.AppleThunderboltIP (2.0.2) <50 43 12 5 4 3 1>

78 4 0xffffff7f813ad000 0xa000 0xa000 com.apple.driver.IOPlatformPluginFamily (5.9.1d7) <11 7 6 5 4 3>

79 3 0xffffff7f813b7000 0x1a000 0x1a000 com.apple.driver.AppleSMC (3.1.9) <11 7 5 4 3 1>

80 1 0xffffff7f813d3000 0x17000 0x17000 com.apple.driver.X86PlatformPlugin (1.0.0) <79 78 37 11 7 6 5 4 3 1>

83 1 0xffffff7f81338000 0xe000 0xe000 com.apple.iokit.IOSerialFamily (11) <7 6 5 4 3 1>

85 1 0xffffff7f8132e000 0x5000 0x5000 com.apple.iokit.IOSlowAdaptiveClockingFamily (1.0.0) <7 6 5 4 3 1>

86 0 0xffffff7f8232e000 0x2000 0x2000 com.apple.driver.AppleIntelSlowAdaptiveClocking (4.0.0) <85 4 3>

87 0 0xffffff7f82547000 0xb000 0xb000 com.apple.driver.AppleHV (1) <7 6 5 4 3 1>

88 2 0xffffff7f81580000 0xad000 0xad000 com.apple.iokit.IOBluetoothFamily (4.3.6f3) <15 7 5 4 3 1>

89 1 0xffffff7f8163d000 0x23000 0x23000 com.apple.iokit.IOBluetoothHostControllerUSBTransport (4.3.6f3) <88 37 12 11 7 5 4 3 1>

90 0 0xffffff7f81660000 0x9000 0x9000 com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport (4.3.6f3) <89 88 37 12 11 7 5 4 3>

91 0 0xffffff7f810ac000 0x3000 0x3000 com.apple.iokit.IOUSBUserClient (705.4.0) <37 7 5 4 3 1>

93 2 0xffffff7f81f3d000 0x78000 0x78000 com.apple.vecLib.kext (1.2.0) <10 6 5 4 3>

94 4 0xffffff7f81fb5000 0x30000 0x30000 com.apple.iokit.IOAudioFamily (203.3) <93 5 4 3 1>

95 2 0xffffff7f825b8000 0xc000 0xc000 com.apple.iokit.IOHDAFamily (272.18.1) <5 4 3 1>

96 1 0xffffff7f825cb000 0x1c000 0x1c000 com.apple.driver.AppleHDAController (272.18.1) <95 94 68 12 7 6 5 4 3 1>

97 0 0xffffff7f82542000 0x3000 0x3000 com.apple.driver.AppleHWAccess (1) <7 5 4 3>

98 0 0xffffff7f81e22000 0x5000 0x5000 com.apple.Dont_Steal_Mac_OS_X (7.0.0) <79 7 4 3 1>

101 0 0xffffff7f8101b000 0x6000 0x6000 com.apple.iokit.IOUserEthernet (1.0.1) <43 6 5 4 3 1>

102 0 0xffffff7f822ed000 0x3000 0x3000 com.apple.driver.AppleLPC (1.7.3) <78 12 5 4 3>

103 0 0xffffff7f82295000 0x4000 0x4000 com.apple.driver.AppleOSXWatchdog (1) <12 7 6 5 4 3 1>

104 1 0xffffff7f825e7000 0x13000 0x13000 com.apple.kext.OSvKernDSPLib (1.15) <5 4>

105 1 0xffffff7f8260a000 0x131000 0x131000 com.apple.driver.DspFuncLib (272.18.1) <104 94 93 35 6 5 4 3 1>

106 0 0xffffff7f82745000 0xab000 0xab000 com.apple.driver.AppleHDA (272.18.1) <105 96 95 94 72 68 6 5 4 3 1>

107 1 0xffffff7f822a2000 0xe000 0xe000 com.apple.driver.AppleSMBusController (1.0.13d1) <27 12 11 5 4 3>

108 0 0xffffff7f822b3000 0xe000 0xe000 com.apple.driver.AppleMCCSControl (1.2.12) <107 68 12 11 7 5 4 3 1>

109 1 0xffffff7f8285c000 0x3000 0x3000 com.apple.driver.AppleGraphicsControl (3.10.25) <68 12 11 7 5 4 3 1>

110 0 0xffffff7f8285f000 0x7000 0x7000 com.apple.driver.AppleGraphicsDevicePolicy (3.7.7) <109 70 68 12 11 7 6 5 4 3 1>

111 0 0xffffff7f820a3000 0x5000 0x5000 com.apple.driver.AppleUpstreamUserClient (3.6.1) <68 12 11 7 5 4 3 1>

113 2 0xffffff7f80e49000 0x5000 0x5000 com.apple.kext.triggers (1.0) <7 6 5 4 3 1>

114 0 0xffffff7f81f32000 0x9000 0x9000 com.apple.filesystems.autofs (3.0) <113 7 6 5 4 3 1>

115 1 0xffffff7f813ea000 0x7000 0x7000 com.apple.driver.X86PlatformShim (1.0.0) <80 79 78 7 4 3>

116 0 0xffffff7f8228e000 0x4000 0x4000 com.apple.driver.ApplePlatformEnabler (2.2.0d4) <7 5 4 3>

117 0 0xffffff7f8283f000 0x14000 0x14000 com.apple.driver.AGPM (110.19.6) <78 72 70 68 12 5 4 3>

118 0 0xffffff7f81fed000 0x5000 0x5000 com.apple.driver.AudioAUUC (1.70) <94 68 12 11 7 5 4 3 1>

119 0 0xffffff7f8156c000 0xa000 0xa000 com.apple.iokit.IOBluetoothSerialManager (4.3.6f3) <83 7 5 4 3 1>

120 0 0xffffff7f8293e000 0xd000 0xd000 com.eset.kext.esets_pfw (600.01.43f01) <4 3 1>

121 0 0xffffff7f8294b000 0x15000 0x15000 com.eset.kext.esets_kac (600.01.43f01) <5 4 3 1>

122 0 0xffffff7f80e4e000 0x59000 0x59000 com.apple.filesystems.smbfs (3.0.2) <113 8 7 6 5 4 3 1>

mac-agiledeMac-mini:~ mac-agile$

system no load my demo dgkexttest.kext 。


Answered by Rum in 48004022

have you tried it with sudo?

sudo kextload /tmp/dgkexttest.kext


And please check what kext owner is root:wheel

Replies  5
Boosts  0
Views  3.5k
Participants  4
DTS Engineer OP
Apple
Sep ’15

Have you tried to actually load the KEXT using (using 

kextload
)? The fact that 
kextutil
complains that the KEXT is not signed is expected; you have 
kext-dev-mode
so the system will ignore the broken signature.

Share and Enjoy
—
Quinn "The Eskimo!"
Apple Developer Relations, Developer Technical Support, Core OS/Hardware 

let myEmail = "eskimo" + "1" + "@apple.com"
0
lvchangbao OP
Sep ’15

i use kextutil -n -t /tmp/dgkexttest.kext


it is not correct ？

0
lvchangbao OP
Sep ’15

so, i try kextload



kextload /tmp/dgkexttest.kext

/tmp/dgkexttest.kext failed to load - (libkern/kext) not privileged; check the system/kernel logs for errors or try kextutil(8).



but failed .

0
Rum OP
Sep ’15
Accepted Answer

have you tried it with sudo?

sudo kextload /tmp/dgkexttest.kext


And please check what kext owner is root:wheel

0
Echs181 OP
Jul ’17

....

0
my demo kext can't be load
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