crash, if gpu is enabled

[bikash]

Hi, I am using 3.14.28 kernel in i.Mx6 solo platform. When I enabled the GPU, I am getting the below crash during booting.

Can someone please suggest the solution?

crash log

------------

PU: Power-on latency exceeded, new value 4178667 ns

Unable to handle kernel NULL pointer dereference at virtual address 00000004

pgd = 9cee0000

[00000004] *pgd=2cfb7831, *pte=00000000, *ppte=00000000

Internal error: Oops: 17 [#1] SMP ARM

Modules linked in: ci_hdrc_imx usbmisc_imx ci_hdrc udc_core evbug

CPU: 0 PID: 167 Comm: Xorg Not tainted 3.14.28-1.0.0_ga+g91cf351 #5

task: 9c2189c0 ti: 9cf58000 task.ti: 9cf58000

PC is at do_raw_spin_lock+0x10/0x19c

LR is at _raw_spin_lock+0x40/0x48

pc : [<80071b5c>]    lr : [<8068d778>]    psr: 600f0013

sp : 9cf59998  ip : 9cf599c8  fp : 9cf599c4

r10: 9c735598  r9 : 00000166  r8 : 00000000

r7 : a0d66000  r6 : 9cf59a40  r5 : 00000000  r4 : 00000000

r3 : dead4ead  r2 : 00000000  r1 : 00000000  r0 : 00000000

Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user

Control: 10c5387d  Table: 2cee0059  DAC: 00000015

Process Xorg (pid: 167, stack limit = 0x9cf58238)

Stack: (0x9cf59998 to 0x9cf5a000)

9980:                                                       9c2189c0 00000000

99a0: 00000000 9cf59a40 a0d66000 00000000 00000166 9c735598 9cf599ec 9cf599c8

99c0: 8068d778 80071b58 00000002 00000000 8048f1f4 8006c934 9cf59a3c 9c735000

99e0: 9cf59a1c 9cf599f0 8048f1f4 8068d744 00000000 9cf59a40 a0d66000 9c50f800

9a00: 9c50f800 9c542000 00000000 00000000 9cf59a3c 9cf59a20 804905a8 8048f16c

9a20: 00000000 00000000 9c513c00 00000300 9cf59a64 9cf59a40 804a89b8 8049058c

9a40: 00000000 9c513c00 00000000 9c513c00 00000000 00000300 9cf59a94 9cf59a68

9a60: 804abbc0 804a8988 00000000 00005007 00070900 00140021 00008000 00000300

9a80: 9c513c00 00000000 9cf59afc 9cf59a98 804acd3c 804ab948 00000300 00000000

9aa0: 00000000 00000000 00000039 00000001 8049c174 80492e14 00000000 00000000

9ac0: 000000a7 000000a7 c7aadfb2 00000001 8068c5b8 9c513c00 9c513c00 00000000

9ae0: 00000001 020d2b8c 00000000 00000000 9cf59b1c 9cf59b00 804927c8 804ac384

9b00: 00000000 00000000 9c513c00 9c542000 9cf59b3c 9cf59b20 8049a55c 80492700

9b20: 00000000 9c542000 9c542000 9c1d0b00 9cf59d44 9cf59b40 8049aa48 8049a528

9b40: 9c1f2110 9c1f2110 9cf59b64 9cf58000 00000000 600c0013 00000001 9cf58000

9b60: 00000000 600c0013 00000001 9cf58000 9cf58008 0205aa14 00000000 00000000

9b80: 00000000 00000000 00000000 00000000 00000000 00000000 9cf58030 00000000

9ba0: 00000000 00000000 00000000 9cf58000 9cf58008 9cf58000 9cf58010 00000000

9bc0: 00000000 9cf58018 9cf58020 00000000 9cf58028 00000000 00000000 600c0013

9be0: 00000001 9cf58038 9cf58000 00000000 00000000 9cf59c00 9cf58010 00000000

9c00: 00000000 9cf58000 9cf58020 9cf58000 00000000 600c0093 00000001 28198000

9c20: 808f88c0 00000000 9cf59c6c 9cf59c38 8006f448 9cf58000 00000000 600c0093

9c40: 00000001 73de7000 808f88c0 00000000 9cf59c94 9cf59c60 8006f448 8006ce68

9c60: 00000002 00000080 9c2189c0 808fe464 a00c0013 8001f47c 9cf58010 00000002

9c80: 00000000 808fe464 00000000 28198000 9cf59cac 9cf59ca0 8006cb10 8006c934

9ca0: 9cf59cc4 9cf59cb0 9cf58000 00000002 00000000 9cf58000 00000000 600d0113

9cc0: 00000001 9ceac000 800ce8b4 600d0113 9cf59d14 9cf59ce0 9cf58030 00000000

9ce0: 00000000 9cf58000 00000000 600d0193 00000001 9a2eea24 800ce8b4 00000002

9d00: 9cf59d44 9cf59d10 8006f448 8006ce68 00000002 9cf58000 00000000 9cf59dc8

9d20: 9c542000 9c1d0b00 00000001 9cf59db0 9cf58000 00000000 9cf59d9c 9cf59d48

9d40: 80499690 8049a9e8 02171870 000000a7 9cf58028 00000000 00000000 00000000

9d60: 00000200 00000000 00000000 00000000 000000a7 ffffffff 800ae784 9c4b8f40

9d80: 9c50f600 9c4b8f40 9cf58020 00007530 9cf59efc 9cf59da0 804959e4 80498d4c

9da0: 9c2189c0 9cd07a54 7ec48930 00000000 00000108 00000000 7ec48930 00000000

9dc0: 00000108 00000000 00000013 00000002 00000022 76f3cce0 00000000 00000000

9de0: 766c5c58 02050b88 00000000 00000000 020d2b8c 00000000 0205aa14 00000000

9e00: 02171870 00000000 7ec489c0 76f3dab4 0000001a 00000000 00000001 00000000

9e20: 00000001 020509d0 00000000 02051f38 00000000 7662e2be 7ec48a08 7ec48a74

9e40: 00000000 02050b88 7ec489b8 76f1f22c ffffffff 76f3dab4 766c3e28 020509d0

9e60: 00000001 00000000 00000001 02051d80 7ec489f4 00000010 02059b8c 02051bc0

9e80: 000000f0 020577ac 00000000 000ceba8 766c1000 769d34c0 00000000 00000001

9ea0: 00000000 02168f74 ffffffff 76f244a8 00000000 00000001 00000001 00000000

9ec0: 7ec48a60 766c3e28 02057b8c 7679a970 9a2c5958 9c50b460 7ec488e8 9cea23c0

9ee0: 800fef30 0000000b 9cf58000 00000000 9cf59f7c 9cf59f00 800fec9c 804958d4

9f00: 9cf59f4c 9cf59f10 800eeab4 8010bedc 00000020 00000000 9cf59f4c 9ccb7dc8

9f20: 80082594 9c218d60 8094dd40 00000000 9c2189c0 00000000 9cf58000 00000000

9f40: 9cf59f5c 9cf59f50 800eec18 800ee9b0 9cf59f84 9cea23c0 7ec488e8 9cea23c0

9f60: 00007530 0000000b 9cf58000 00000000 9cf59fa4 9cf59f80 800fef30 800fe8a0

9f80: 02057568 00002710 7679a884 00007530 00000036 8000eb84 00000000 9cf59fa8

9fa0: 8000e9c0 800fef00 00002710 7679a884 0000000b 00007530 7ec488e8 02057568

9fc0: 00002710 7679a884 00007530 00000036 00000001 0205aa14 7678f890 00000001

9fe0: 7678fa94 7ec488d4 76781768 76b84cbc 200d0010 0000000b 00000000 00000000

Backtrace:

[<80071b4c>] (do_raw_spin_lock) from [<8068d778>] (_raw_spin_lock+0x40/0x48)

r10:9c735598 r9:00000166 r8:00000000 r7:a0d66000 r6:9cf59a40 r5:00000000

r4:00000000 r3:9c2189c0

[<8068d738>] (_raw_spin_lock) from [<8048f1f4>] (_QueryProcessPageTable+0x94/0xe4)

r4:9c735000

[<8048f160>] (_QueryProcessPageTable) from [<804905a8>] (gckOS_GetPhysicalAddress+0x28/0xac)

r10:00000000 r9:00000000 r8:9c542000 r7:9c50f800 r6:9c50f800 r5:a0d66000

r4:9cf59a40 r3:00000000

[<80490580>] (gckOS_GetPhysicalAddress) from [<804a89b8>] (gckHARDWARE_SetMMU+0x3c/0x184)

r6:00000300 r5:9c513c00 r4:00000000 r3:00000000

[<804a897c>] (gckHARDWARE_SetMMU) from [<804abbc0>] (gckHARDWARE_InitializeHardware+0x284/0x780)

r6:00000300 r5:00000000 r4:9c513c00

[<804ab93c>] (gckHARDWARE_InitializeHardware) from [<804acd3c>] (gckHARDWARE_SetPowerManagementState+0x9c4/0xb54)

r5:00000000 r4:9c513c00

[<804ac378>] (gckHARDWARE_SetPowerManagementState) from [<804927c8>] (gckOS_Broadcast+0xd4/0x128)

r10:00000000 r9:00000000 r8:020d2b8c r7:00000001 r6:00000000 r5:9c513c00

r4:9c513c00

[<804926f4>] (gckOS_Broadcast) from [<8049a55c>] (gckCOMMAND_EnterCommit+0x40/0xb4)

r4:9c542000

[<8049a51c>] (gckCOMMAND_EnterCommit) from [<8049aa48>] (gckCOMMAND_Commit+0x6c/0xcdc)

r6:9c1d0b00 r5:9c542000 r4:9c542000 r3:00000000

[<8049a9dc>] (gckCOMMAND_Commit) from [<80499690>] (gckKERNEL_Dispatch+0x950/0xf7c)

r10:00000000 r9:9cf58000 r8:9cf59db0 r7:00000001 r6:9c1d0b00 r5:9c542000

r4:9cf59dc8

[<80498d40>] (gckKERNEL_Dispatch) from [<804959e4>] (drv_ioctl+0x11c/0x2bc)

r7:00007530 r6:9cf58020 r5:9c4b8f40 r4:9c50f600

[<804958c8>] (drv_ioctl) from [<800fec9c>] (do_vfs_ioctl+0x408/0x660)

r10:00000000 r9:9cf58000 r8:0000000b r7:800fef30 r6:9cea23c0 r5:7ec488e8

r4:9c50b460

[<800fe894>] (do_vfs_ioctl) from [<800fef30>] (SyS_ioctl+0x3c/0x64)

r10:00000000 r9:9cf58000 r8:0000000b r7:00007530 r6:9cea23c0 r5:7ec488e8

r4:9cea23c0

[<800feef4>] (SyS_ioctl) from [<8000e9c0>] (ret_fast_syscall+0x0/0x48)

r8:8000eb84 r7:00000036 r6:00007530 r5:7679a884 r4:00002710 r3:02057568

Code: e1a0c00d e92ddff8 e24cb004 e59f316c (e5902004)

---[ end trace 896fc1edf9e9b413 ]---

[qiang_li-mpu_se]

I think you need check your power on VDDPU, if there is no VDDPU, when GPU starts to work, it will crash.

[bikash]

Hi, can anyone please give some clue, why the above crash is happening?

[Yuri]

Hello,

  In addition to Qiang LI - it makes sense to verify Your design,
using the Design Checklist.

http://cache.freescale.com/files/32bit/doc/user_guide/IMX6DQ6SDLHDG.pdf

Have a great day,
Yuri

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