imx6q Android4.4.2 reboot

[pengxingwei]

hello,

       my board is designed accroding sabre sd board, on which run Android_kk4.4.2 （kernel 3.0.35）.I come cross a problem that the board usually reboot (first ,the desktop is stopping ,can't do anything  then it reboot)when I operrate on android desktop only one to three minutes. before it reboot ,the log print :

[   71.742086] Internal error: Oops - undefined instruction: 0 [#1] PREEMPT SMP
[   71.749510] Modules linked in: rtk_btusb [last unloaded: 8723bu]
[   71.755794] CPU: 0    Tainted: G    B        (3.0.35 #231)
[   71.761393] PC is at 0xc80e1640
[   71.764593] LR is at 0xc80e1640
[   71.767795] pc : [<c80e1640>]    lr : [<c80e1640>]    psr: 200f0193
[   71.767800] sp : c093bf48  ip : d61f360c  fp : 00000000
[   71.779458] r10: 00000000  r9 : c093a000  r8 : 00000000
[   71.784796] r7 : 00000044  r6 : c093a000  r5 : c0054dc4  r4 : c09507d0
[   71.791437] r3 : 00000002  r2 : 00010002  r1 : 00000044  r0 : c093e34c
[   71.798027] Flags: nzCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
[   71.805537] Control: 10c53c7d  Table: 2219804a  DAC: 00000015
[   71.811344]
[   71.811346] PC: 0xc80e15c0:
[   71.815795] 15c0  d7cfffef 7a6ff8fa fdfe7f63 bfbfde9f fafff67e f9cf1ebf ffb7f973 af6f7ffb
[   71.824675] 15e0  33775bb8 7cbcfbfd dbcd7fb9 7ffa4db6 aeff6bbb 5f76ef64 fbbffd7f 7df6b3fe
[   71.833607] 1600  e2cffd3f edfdffdb f6befaef affdebf9 effffd8f ed7dffef f7fdfeba bffdd9ff
[   71.842536] 1620  ecddf5f9 dffe7ff7 efffad6f ffae6777 dbbeb3f2 ddbefffd ffcfe7df 6deffeff
[   71.851463] 1640  ff7f1ac9 d89fd717 5dff4eb9 e7fafdf7 fb766bcb 20ffffb7 6beb3abb fbc3fefb
[   71.860339] 1660  f5feaacf 6ff7fffb f7ffabdf 7fdd7fff affef26b fedf7977 f7ff7f4a cbf77fdf
[   71.869218] 1680  df7fe7f7 fb76fd74 fcee2c53 dadefbff 768f4f7d b8def9fc fffeaedf a267cfb7
[   71.878144] 16a0  eefe73ff ad5fef77 fdfdf5ef 9d5f5bf6 7ef638ea 8aff7ffa 7fbf71bf bff57fde
[   71.887020]
[   71.887022] LR: 0xc80e15c0:
[   71.891470] 15c0  d7cfffef 7a6ff8fa fdfe7f63 bfbfde9f fafff67e f9cf1ebf ffb7f973 af6f7ffb
[   71.900404] 15e0  33775bb8 7cbcfbfd dbcd7fb9 7ffa4db6 aeff6bbb 5f76ef64 fbbffd7f 7df6b3fe
[   71.909280] 1600  e2cffd3f edfdffdb f6befaef affdebf9 effffd8f ed7dffef f7fdfeba bffdd9ff
[   71.918154] 1620  ecddf5f9 dffe7ff7 efffad6f ffae6777 dbbeb3f2 ddbefffd ffcfe7df 6deffeff
[   71.927083] 1640  ff7f1ac9 d89fd717 5dff4eb9 e7fafdf7 fb766bcb 20ffffb7 6beb3abb fbc3fefb
[   71.935959] 1660  f5feaacf 6ff7fffb f7ffabdf 7fdd7fff affef26b fedf7977 f7ff7f4a cbf77fdf
[   71.944887] 1680  df7fe7f7 fb76fd74 fcee2c53 dadefbff 768f4f7d b8def9fc fffeaedf a267cfb7
[   71.953817] 16a0  eefe73ff ad5fef77 fdfdf5ef 9d5f5bf6 7ef638ea 8aff7ffa 7fbf71bf bff57fde
[   71.962745]
[   71.962747] SP: 0xc093bec8:
[   71.967145] bec8  000000a4 00000044 00000000 c093e34c 00000044 00000001 00000000 c093a000
[   71.976076] bee8  c093a000 00010003 00000000 c093a050 00000001 c005c444 c093e34c 00000044
[   71.984948] bf08  00010002 00000002 c09507d0 c0054dc4 c093a000 00000044 00000000 c093a000
[   71.993877] bf28  00000000 00000000 d61f360c c093bf48 c80e1640 c80e1640 200f0193 ffffffff
[   72.002808] bf48  00000270 c005d1b0 ffffffff f2a00100 00000044 00000002 00000001 c005c34c
[   72.011733] bf68  c09e4548 800f0093 00000001 00000000 c093a000 c09cffe4 c094fa70 c06bdea4
[   72.020615] bf88  c0958084 412fc09a 00000000 00000000 00000000 c093bfb0 c006c284 c005d468
[   72.029541] bfa8  400f0013 ffffffff c005d444 c005d790 c095061c 00000000 c003b2fc c1367180
[   72.038469]
[   72.038471] IP: 0xd61f358c:
[   72.042869] 358c  00000000 00000000 00000000 00000000 2d786d69 00633269 00000000 00000000
[   72.051797] 35ac  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.060722] 35cc  00000000 00000000 00000000 00000000 00000000 00000001 00000000 00000000
[   72.069598] 35ec  d61f35ec d61f35ec 00000000 d61f35f8 d61f35f8 d6184e60 c095d2f4 d981e000
[   72.078533] 360c  00000044 00000000 00000000 d61f3618 d61f3618 000000a6 0000000b 00000000
[   72.087468] 362c  00000032 014fb180 00000000 00000000 00000000 00000000 00000000 00000000
[   72.096403] 364c  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.105279] 366c  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.114209]
[   72.114211] R0: 0xc093e2cc:
[   72.118609] e2cc  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.127543] e2ec  00000000 00000000 d6093a20 00000000 00000000 00000044 00000000 00000000
[   72.136474] e30c  c0958b60 00000000 c094fa90 00000000 0000000f 00000000 c0057b64 c00e429c
[   72.145403] e32c  d62947e0 00000000 00000000 00000000 00000000 0000058a 00000000 00000000
[   72.154282] e34c  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.163212] e36c  c093e36c c093e36c d6093720 00000000 00000000 00000045 00000000 00000000
[   72.172089] e38c  c0958b60 00000000 c094fa90 00000000 0000000f 00000000 c0057b68 c00e429c
[   72.180964] e3ac  d6294760 00000000 00000000 00000000 00000000 000003d6 00000000 00000000
[   72.189897]
[   72.189899] R4: 0xc0950750:
[   72.194351] 0750  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.203226] 0770  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.212158] 0790  00000064 00008000 0000000f c1389020 00000008 00000004 c1389000 c1381000
[   72.221033] 07b0  c136a000 0000002c c1371000 c1379000 00000001 00001000 00000000 00000003
[   72.229909] 07d0  01316000 0131e000 01326000 0132e000 0001a500 00000002 00028ffb 0004ffff
[   72.238843] 07f0  00000001 00000032 0000fffa 00000001 d625dae0 d625da80 00000000 d6018f20
[   72.247775] 0810  0000000f d601d580 d625da20 d6000a20 00000010 c138b120 0000ffff 00000064
[   72.256703] 0830  d6000a80 0000000f c13cb120 00007fff d6018f80 00100000 d601b000 0000000f
[   72.265579]
[   72.265581] R5: 0xc0054d44:
[   72.270032] 4d44  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.278907] 4d64  00000000 00000000 00000000 00000000 00000000 00000000 00000000 0000001c
[   72.287837] 4d84  00000000 00000000 00000000 00000000 00000000 00000000 ea020000 00440607
[   72.296764] 4da4  00000000 0000001a 00000000 696c6573 0078756e 00000000 00000000 00000000
[   72.305692] 4dc4  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.314567] 4de4  626f3a75 7463656a 733a725f 65747379 69665f6d 733a656c 00000030 000081a4
[   72.323493] 4e04  000006b8 5959ea63 5959ea63 5959ea63 00000000 00010000 00000008 00080080
[   72.332422] 4e24  00000000 0001f30a 00000003 00000000 00000000 00000001 0000fc0d 00000000
[   72.341351]
[   72.341353] R6: 0xc0939f80:
[   72.345750] 9f80  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.354675] 9fa0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.363548] 9fc0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.372476] 9fe0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.381404] a000  00000002 00010004 00000000 c0956e80 c096d7b4 00000000 00000015 c0956e80
[   72.390331] a020  c136b320 00000000 c093a000 6142b3eb d617d140 c0957120 c093bfb4 c093bf00
[   72.399200] a040  c06b8a20 00000000 00000000 00000000 00000000 00000000 00010000 00000000
[   72.408128] a060  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.417057]
[   72.417059] R9: 0xc0939f80:
[   72.421455] 9f80  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.430383] 9fa0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.439308] 9fc0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.448181] 9fe0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.457111] a000  00000002 00010004 00000000 c0956e80 c096d7b4 00000000 00000015 c0956e80
[   72.466040] a020  c136b320 00000000 c093a000 6142b3eb d617d140 c0957120 c093bfb4 c093bf00
[   72.474917] a040  c06b8a20 00000000 00000000 00000000 00000000 00000000 00010000 00000000
[   72.483846] a060  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[   72.492780] Process swapper (pid: 0, stack limit = 0xc093a2f0)
[   72.498674] Stack: (0xc093bf48 to 0xc093c000)
[   72.503145] bf40:                   00000270 c005d1b0 ffffffff f2a00100 00000044 00000002
[   72.511439] bf60: 00000001 c005c34c c09e4548 800f0093 00000001 00000000 c093a000 c09cffe4
[   72.519681] bf80: c094fa70 c06bdea4 c0958084 412fc09a 00000000 00000000 00000000 c093bfb0
[   72.527975] bfa0: c006c284 c005d468 400f0013 ffffffff c005d444 c005d790 c095061c 00000000
[   72.536270] bfc0: c003b2fc c1367180 1000406a c00088bc c00082f8 00000000 00000000 c003b2fc
[   72.544512] bfe0: 00000000 10c53c7d c094fa6c c003b2f8 c095807c 10008040 00000000 00000000
[   72.552808] Code: dbbeb3f2 ddbefffd ffcfe7df 6deffeff (ff7f1ac9)
[   72.559069] ---[ end trace fad26496e1ea4e91 ]---
[   72.563777] Kernel panic - not syncing: Fatal exception in interrupt
[   72.570277] [<c0063fe4>] (unwind_backtrace+0x0/0x138) from [<c06b41ac>] (panic+0x74/0x194)
[   72.578623] [<c06b41ac>] (panic+0x74/0x194) from [<c0060478>] (die+0x220/0x284)
[   72.586067] [<c0060478>] (die+0x220/0x284) from [<c0056134>] (do_undefinstr+0x130/0x140)
[   72.594296] [<c0056134>] (do_undefinstr+0x130/0x140) from [<c005c444>] (__und_svc+0x44/0x60)
[   72.602857] Exception stack(0xc093bf00 to 0xc093bf48)
[   72.607974] bf00: c093e34c 00000044 00010002 00000002 c09507d0 c0054dc4 c093a000 00000044
[   72.616279] bf20: 00000000 c093a000 00000000 00000000 d61f360c c093bf48 c80e1640 c80e1640
[   72.624530] bf40: 200f0193 ffffffff
[   72.628137] [<c005c444>] (__und_svc+0x44/0x60) from [<c80e1640>] (0xc80e1640)
[   72.635351] CPU1: stopping
[   72.638188] [<c0063fe4>] (unwind_backtrace+0x0/0x138) from [<c00563a8>] (do_IPI+0x1d4/0x208)
[   72.646695] [<c00563a8>] (do_IPI+0x1d4/0x208) from [<c005c34c>] (__irq_svc+0x4c/0xe8)
[   72.654639] Exception stack(0xd6065ee8 to 0xd6065f30)
[   72.659754] 5ee0:                   00000000 c09e2c00 00000000 c09e2c20 00000202 d6064000
[   72.668049] 5f00: d6064000 00000000 00000001 d6065f90 00000000 00000000 c0063770 d6065f30
[   72.676341] 5f20: c00a3ea0 c00a37f0 20070113 ffffffff
[   72.681459] [<c005c34c>] (__irq_svc+0x4c/0xe8) from [<c00a37f0>] (__do_softirq+0x60/0x25c)
[   72.689841] [<c00a37f0>] (__do_softirq+0x60/0x25c) from [<c00a3ea0>] (irq_exit+0x98/0xa0)
[   72.698136] [<c00a3ea0>] (irq_exit+0x98/0xa0) from [<c0056324>] (do_IPI+0x150/0x208)
[   72.705998] [<c0056324>] (do_IPI+0x150/0x208) from [<c005c34c>] (__irq_svc+0x4c/0xe8)
[   72.713889] Exception stack(0xd6065f90 to 0xd6065fd8)
[   72.719054] 5f80:                                     c09e4548 80070093 00000001 00000000
[   72.727295] 5fa0: d6064000 c09cffe4 c094fa70 c06bdea4 c0958084 412fc09a 00000000 00000000
[   72.735586] 5fc0: 00000000 d6065fd8 c006c284 c005d468 40070013 ffffffff
[   72.742321] [<c005c34c>] (__irq_svc+0x4c/0xe8) from [<c005d468>] (default_idle+0x24/0x28)
[   72.750567] [<c005d468>] (default_idle+0x24/0x28) from [<c005d790>] (cpu_idle+0xe0/0x124)
[   72.758862] [<c005d790>] (cpu_idle+0xe0/0x124) from [<106afbd4>] (0x106afbd4)
[   72.766113] CPU2: stopping
[   72.768896] [<c0063fe4>] (unwind_backtrace+0x0/0x138) from [<c00563a8>] (do_IPI+0x1d4/0x208)
[   72.777455] [<c00563a8>] (do_IPI+0x1d4/0x208) from [<c005c34c>] (__irq_svc+0x4c/0xe8)
[   72.785346] Exception stack(0xd6071ee8 to 0xd6071f30)
[   72.790513] 1ee0:                   00000000 c09e2c00 00000000 c09e2c40 00000202 d6070000
[   72.798807] 1f00: d6070000 00000000 00000002 d6071f90 00000000 00000000 c0063770 d6071f30
[   72.807046] 1f20: c00a3ea0 c00a37f0 200f0113 ffffffff
[   72.812216] [<c005c34c>] (__irq_svc+0x4c/0xe8) from [<c00a37f0>] (__do_softirq+0x60/0x25c)
[   72.820600] [<c00a37f0>] (__do_softirq+0x60/0x25c) from [<c00a3ea0>] (irq_exit+0x98/0xa0)
[   72.828843] [<c00a3ea0>] (irq_exit+0x98/0xa0) from [<c0056324>] (do_IPI+0x150/0x208)
[   72.836706] [<c0056324>] (do_IPI+0x150/0x208) from [<c005c34c>] (__irq_svc+0x4c/0xe8)
[   72.844650] Exception stack(0xd6071f90 to 0xd6071fd8)
[   72.849762] 1f80:                                     c09e4548 600f0093 00000001 00000000
[   72.858056] 1fa0: d6070000 c09cffe4 c094fa70 c06bdea4 c0958084 412fc09a 00000000 00000000
[   72.866349] 1fc0: 00000000 d6071fd8 c006c284 c005d468 400f0013 ffffffff
[   72.873030] [<c005c34c>] (__irq_svc+0x4c/0xe8) from [<c005d468>] (default_idle+0x24/0x28)
[   72.881327] [<c005d468>] (default_idle+0x24/0x28) from [<c005d790>] (cpu_idle+0xe0/0x124)
[   72.889623] [<c005d790>] (cpu_idle+0xe0/0x124) from [<106afbd4>] (0x106afbd4)
[   72.896820] CPU3: stopping
[   72.899603] [<c0063fe4>] (unwind_backtrace+0x0/0x138) from [<c00563a8>] (do_IPI+0x1d4/0x208)
[   72.908162] [<c00563a8>] (do_IPI+0x1d4/0x208) from [<c005c34c>] (__irq_svc+0x4c/0xe8)
[   72.916105] Exception stack(0xd609bee8 to 0xd609bf30)
[   72.921219] bee0:                   00000000 c09e2c00 00000000 c09e2c60 00000282 d609a000
[   72.929512] bf00: d609a000 00000000 00000003 d609bf90 00000000 00000000 c0063770 d609bf30
[   72.937806] bf20: c00a3ea0 c00a37f0 200d0113 ffffffff
[   72.942924] [<c005c34c>] (__irq_svc+0x4c/0xe8) from [<c00a37f0>] (__do_softirq+0x60/0x25c)
[   72.951305] [<c00a37f0>] (__do_softirq+0x60/0x25c) from [<c00a3ea0>] (irq_exit+0x98/0xa0)
[   72.959599] [<c00a3ea0>] (irq_exit+0x98/0xa0) from [<c0056324>] (do_IPI+0x150/0x208)
[   72.967408] [<c0056324>] (do_IPI+0x150/0x208) from [<c005c34c>] (__irq_svc+0x4c/0xe8)
[   72.975351] Exception stack(0xd609bf90 to 0xd609bfd8)
[   72.980517] bf80:                                     c09e4548 600d0093 00000001 00000000
[   72.988759] bfa0: d609a000 c09cffe4 c094fa70 c06bdea4 c0958084 412fc09a 00000000 00000000
[   72.997053] bfc0: 00000000 d609bfd8 c006c284 c005d468 400d0013 ffffffff
[   73.003857] [<c005c34c>] (__irq_svc+0x4c/0xe8) from [<c005d468>] (default_idle+0x24/0x28)
[   73.012101] [<c005d468>] (default_idle+0x24/0x28) from [<c005d790>] (cpu_idle+0xe0/0x124)
[   73.020397] [<c005d790>] (cpu_idle+0xe0/0x124) from [<106afbd4>] (0x106afbd4)

please help me to analyze the problem,and how to resolve it .Thank you very much!

[HaohuaQIN]

hi，peng xingwei:

I have the same problem like yours.

I tested my board use linux,it is work ok when used linux. Never hang.

Only crashed in android.

How to resolve it??

Thanks !!

[igorpadykov]

Hi peng

this may be caused by ddr errors, please run ddr test

https://community.freescale.com/docs/DOC-105652 

and rebuild image with new calibration coefficients.

Best regards
igor
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[pengxingwei]

Hi, if I want to change the ddr3 frequency from 528M to 400M ,how to modify the file for uboot-2009,thanks

[igorpadykov]

is it working good without gpu ? As since this old kernel many gpu

bugs were found and fixed on last android releases.

~igor

[pengxingwei]

Hi igorpadyko

      I have modfied relative ddr value accroding the ddr test,this has about 80 machine running long time,but there are still several machines that  reboot  ,Is there any other reason for this reboot problem? thanks

[igorpadykov]

among other reasons may be power supplies, please check its requirements in

i.MX6 System Development User’s Guide

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

Best regards
igor