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'Stress' tool on imx6quad always crashes

Question asked by shilpa sb on Aug 12, 2016
Latest reply on Sep 7, 2016 by shilpa sb

Hi ,

I am running 'Stree ' tool on a customised imx6q processor board.

My DDR3 configuration is 1Ghz, with freq set to 400 Mhz

I run the tool with the options given below


stress --cpu 8 --io 4 --vm 4 --vm-bytes 200M --timeout 1d &


Kernel always crashes after sometime(30 mins or less).

The log when the kernel crashes is given below


Unable to handle kernel NULL pointer dereference at virtual address 0000000b

pgd = ba430000

[0000000b] *pgd=4fae5831, *pte=00000000, *ppte=00000000

Internal error: Oops: 17 [#1] SMP

Modules linked in:

CPU: 1    Not tainted  (3.0.35-magik2mx6_0.1-svn98 #1)

PC is at set_page_dirty+0x4c/0x94

LR is at unmap_vmas+0x460/0x688

pc : [<801407e4>]    lr : [<801534c4>]    psr: a00f0013

sp : ba3d5e68  ip : 0004fffb  fp : 2d600000

r10: ba411058  r9 : 2d479000  r8 : ba3d5ef8

r7 : 8be9bf20  r6 : 00000000  r5 : ba4161e4  r4 : 8be9bf20

76r3 : ffffffff  r2 : 40080000  r1 : 8be9bf20  r0 : 00000012



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

Control: 10c53c7d  Table: 4a43004a  DAC: 00000015

Process stress (pid: 1723, stack limit = 0xba3d42f0)

Stack: (0xba3d5e68 to 0xba3d6000)

5e60:                   44df975f ba4161e8 ba4161e4 801534c4 ba3d5ebc 00000000

5e80: 44df975f 8bf482cc ba430b54 ba507520 ba507664 807d9700 ba3d4000 311d5000

5ea0: ba430b50 2add4000 311d5000 311d4fff 8c00e87c 00000000 ffffff87 00000000

5ec0: ba507520 ba3d5f18 ba507520 bff1a7e8 ba411058 bff1a840 311d5000 2add4000

5ee0: 00000032 801567b4 ba3d5ef4 00000000 ba3d4000 00006401 ba507520 00000000

5f00: ba411058 2d1d4000 2d47a000 000002a5 00000400 bfbc7000 00000001 00000001

5f20: 00000004 800ba820 800b3000 800b3000 800b3000 8077faf4 800b3000 ba507520

5f40: ba411058 311d5000 2add4000 bff1a7e8 ba507524 bff1a7f4 ba411058 80157834

5f60: 311d5000 ba3d4008 800b2bb4 ba507520 ba507558 06401000 2add4000 800ba944

5f80: ba3d4000 00000000 00000000 80158c98 2adcf228 00001000 00000000 06400000

5fa0: 0000005b 800ba7c0 00001000 00000000 2add4000 06401000 00000000 2adcf228

5fc0: 00001000 00000000 06400000 0000005b 2add4008 000155fc 2add3008 00000000

5fe0: 00000000 7ebecb3c 0000adb0 2ad67e6c 60000010 2add4000 00000000 00000000

[<801407e4>] (set_page_dirty+0x4c/0x94) from [<801534c4>] (unmap_vmas+0x460/0x688)

[<801534c4>] (unmap_vmas+0x460/0x688) from [<801567b4>] (unmap_region+0xbc/0x1ac)

[<801567b4>] (unmap_region+0xbc/0x1ac) from [<80157834>] (do_munmap+0x1e4/0x2cc)

[<80157834>] (do_munmap+0x1e4/0x2cc) from [<80158c98>] (sys_munmap+0x40/0x54)

[<80158c98>] (sys_munmap+0x40/0x54) from [<800ba7c0>] (ret_fast_syscall+0x0/0x30)

Code: 0afffff8 e5933044 e3a00012 e1a01004 (e593500c)

---[ end trace edbadc2c41e6773a ]---



Can anyone please help in solving this issue? It is quite urgent.