Now on the real bit of fun that I want to get to the bottom of.
This is from startx on the model.
I have -C cache_state_modelled=0 set. Would that have an affect here?
[ 2823.338192] Unable to handle kernel paging request at virtual address ffffffbc00540000 [ 2823.338248] pgd = ffffffc078dd0000 [ 2823.338295] [ffffffbc00540000] *pgd=0000000000000000 [ 2823.338353] Internal error: Oops: 96000006 [#1] SMP [ 2823.338395] Modules linked in: gator [ 2823.338481] CPU: 6 PID: 1575 Comm: X Not tainted 3.13.0-1-linaro-vexpress64 #1ubuntu1~ci+131216010606 [ 2823.338558] task: ffffffc079b95500 ti: ffffffc078fd8000 task.ti: ffffffc078fd8000 [ 2823.338624] PC is at page_mapping+0x0/0x3c [ 2823.338690] LR is at __sync_icache_dcache+0x2c/0xb8 [ 2823.338751] pc : [<ffffffc00014c974>] lr : [<ffffffc000091214>] pstate: 60000145 [ 2823.338805] sp : ffffffc078fdbbc0 [ 2823.338852] x29: ffffffc078fdbbc0 x28: 0000000000000041 [ 2823.338923] x27: 0000007fa7787000 x26: 0020000000000f43 [ 2823.338995] x25: 0000007fa7800000 x24: ffffffc078017c38 [ 2823.339068] x23: 0120000018000f43 x22: 0000000000018000 [ 2823.339140] x21: 0020000018000f43 x20: ffffffc07887f9d8 [ 2823.339215] x19: ffffffbc00540000 x18: 0000007fe352a7e0 [ 2823.339287] x17: 0000007fa795f4c0 x16: ffffffc000087048 [ 2823.339358] x15: 0000000000592000 x14: 0000000000569538 [ 2823.339429] x13: 00000000005695c0 x12: 0000000000000007 [ 2823.339500] x11: 0000000000000028 x10: 0000000000000000 [ 2823.339568] x9 : 0000000000000002 x8 : ffffffc00085d5a0 [ 2823.339641] x7 : ffffffc000928000 x6 : 0000000000000006 [ 2823.339710] x5 : 0000000000000c38 x4 : ffffffc078fd8000 [ 2823.339780] x3 : 0000000000000000 x2 : 0000000000000000 [ 2823.339851] x1 : ffffffbc00000000 x0 : ffffffbc00540000 [ 2823.339914] [ 2823.339962] Process X (pid: 1575, stack limit = 0xffffffc078fd8058) [ 2823.340026] Stack: (0xffffffc078fdbbc0 to 0xffffffc078fdc000) [ 2823.340133] bbc0: 78fdbbe0 ffffffc0 00158adc ffffffc0 03640508 ffffffbc 00000000 ffffffc0 [ 2823.340248] bbe0: 78fdbc80 ffffffc0 0041c988 ffffffc0 78c05000 ffffffc0 7898c318 ffffffc0 [ 2823.340360] bc00: 00899db0 ffffffc0 78c05038 ffffffc0 00000000 00000000 78fd8000 ffffffc0 [ 2823.340475] bc20: 7808b840 ffffffc0 7898c318 ffffffc0 789bae58 ffffffc0 78fa7c40 ffffffc0 [ 2823.340588] bc40: a7907000 0000007f a7906fff 0000007f f8070879 ffffffff 78dd0ff0 ffffffc0 [ 2823.340702] bc60: a7907000 0000007f a7906fff 0000007f 78fa7c40 ffffffc0 78fd8000 ffffffc0 [ 2823.340816] bc80: 78fdbc90 ffffffc0 0041c914 ffffffc0 78fdbca0 ffffffc0 0040e [ 2823.340816] bc80: 78fdbc90 ffffffc0 0041c914 ffffffc0 78fdbca0 ffffffc0 0040ef68 ffffffc0 [ 2823.340930] bca0: 78fdbcf0 ffffffc0 0015fa44 ffffffc0 7898c6b8 ffffffc0 a7787000 0000007f [ 2823.341042] bcc0: 7898c6a8 ffffffc0 000000ff 00000000 a7907000 0000007f 78fd8000 ffffffc0 [ 2823.341152] bce0: 00000000 00000000 00000000 00000000 78fdbd70 ffffffc0 0015fed0 ffffffc0 [ 2823.341261] bd00: 00000007 00000000 000000ff 00000000 7808b840 ffffffc0 00000001 00000000 [ 2823.341372] bd20: 78fa7c40 ffffffc0 00180000 00000000 00000180 00000000 a7787000 0000007f [ 2823.341480] bd40: 00000007 00000000 78fd8000 ffffffc0 00000180 00000000 00000000 00000000 [ 2823.341593] bd60: 00000000 00000000 0017ee44 ffffffc0 78fdbde0 ffffffc0 0014c900 ffffffc0 [ 2823.341702] bd80: 00000000 00000000 00180000 00000000 00000000 00000000 7808b840 ffffffc0 [ 2823.341813] bda0: 78fa7ca0 ffffffc0 00000000 00000000 00180000 00000000 00638000 ffffffc0 [ 2823.341925] bdc0: 0086b000 ffffffc0 00604104 ffffffc0 00000000 00000000 78fdbe20 ffffffc0 [ 2823.342036] bde0: 78fdbe50 ffffffc0 0015e528 ffffffc0 00000001 00000000 00180000 00000000 [ 2823.342145] be00: 7808b840 ffffffc0 00000003 00000000 00000000 00000000 00000200 00000000 [ 2823.342252] be20: 00000000 00000000 00083988 ffffffc0 00000003 00000000 00000001 00000000 [ 2823.342363] be40: 00000000 00000000 0044ffb8 00000000 78fdbec0 ffffffc0 00087060 ffffffc0 [ 2823.342475] be60: 3faa4400 00000000 3faa3c40 00000000 ffffffff ffffffff a7bb85f8 0000007f [ 2823.342583] be80: 80000000 00000000 00000015 00000000 00000112 00000000 000000de 00000000 [ 2823.342695] bea0: ffffffff ffffffff 0017d770 ffffffc0 00001bf7 00000000 a7ee8000 0000007f [ 2823.342806] bec0: e352aa40 0000007f 000839ec ffffffc0 00000000 00000000 00180000 00000000 [ 2823.342912] bee0: 00000003 00000000 00000001 00000000 00000009 00000000 00000000 00000000 [ 2823.343020] bf00: 005a5048 00000000 00000002 00000000 000000de 00000000 005694d8 00000000 [ 2823.343129] bf20: 01010101 01010101 00000028 00000000 00000007 00000000 005695c0 00000000 [ 2823.343239] bf40: 00569538 00000000 00592000 00000000 a7bb85e4 0000007f a795f4c0 0000007f [ 2823.343349] bf60: e352a7e0 0000007f 3faa4400 00000000 3faa3c40 00000000 00000000 00000000 [ 2823.343459] bf80: 3faa5610 00000000 a7974000 0000007f e352adb8 0000007f 00000004 00000000 [ 2823.343570] bfa0: 00592000 00000000 a7963a90 0000007f 00591000 00000000 e352aa40 0000007f [ 2823.343681] bfc0: a794e8c4 0000007f e352aa40 0000007f a7bb85f8 0000007f 80000000 00000000 [ 2823.343791] bfe0: 00000000 00000000 000000de 00000000 dfdfdfcf cfdfdfdf dfdfdfcf cfdfdfdf [ 2823.343842] Call trace: [ 2823.343902] [<ffffffc00014c974>] page_mapping+0x0/0x3c [ 2823.343985] [<ffffffc000158adc>] remap_pfn_range+0x20c/0x368 [ 2823.344054] [<ffffffc00041c988>] clcdfb_mmap_io+0x64/0x78 [ 2823.344122] [<ffffffc00041c914>] clcdfb_mmap+0x44/0x54 [ 2823.344196] [<ffffffc00040ef68>] fb_mmap+0x78/0x128 [ 2823.344265] [<ffffffc00015fa44>] mmap_region+0x374/0x524 [ 2823.344337] [<ffffffc00015fed0>] do_mmap_pgoff+0x2dc/0x348 [ 2823.344406] [<ffffffc00014c900>] vm_mmap_pgoff+0x94/0xcc [ 2823.344478] [<ffffffc00015e528>] SyS_mmap_pgoff+0x194/0x1ec [ 2823.344555] [<ffffffc000087060>] sys_mmap+0x18/0x28 [ 2823.344637] Code: a8c17bfd d65f03c0 928002a0 17fffffd (f9400002) [ 2823.344753] ---[ end trace 3444d63facfbd008 ]---
Thoughts?
On 16 January 2014 16:59, Tom Gall tom.gall@linaro.org wrote:
Now on the real bit of fun that I want to get to the bottom of.
This is from startx on the model.
I have -C cache_state_modelled=0 set. Would that have an affect here?
No. This doesn't effect the functionality of the model. From memory, this is a debugging option that tells the user (via output to the terminal where you launched the model) if there have been any cache state violations.
[ 2823.338192] Unable to handle kernel paging request at virtual address ffffffbc00540000 [ 2823.338248] pgd = ffffffc078dd0000 [ 2823.338295] [ffffffbc00540000] *pgd=0000000000000000 [ 2823.338353] Internal error: Oops: 96000006 [#1] SMP [ 2823.338395] Modules linked in: gator [ 2823.338481] CPU: 6 PID: 1575 Comm: X Not tainted 3.13.0-1-linaro-vexpress64 #1ubuntu1~ci+131216010606 [ 2823.338558] task: ffffffc079b95500 ti: ffffffc078fd8000 task.ti: ffffffc078fd8000 [ 2823.338624] PC is at page_mapping+0x0/0x3c [ 2823.338690] LR is at __sync_icache_dcache+0x2c/0xb8 [ 2823.338751] pc : [<ffffffc00014c974>] lr : [<ffffffc000091214>] pstate: 60000145 [ 2823.338805] sp : ffffffc078fdbbc0 [ 2823.338852] x29: ffffffc078fdbbc0 x28: 0000000000000041 [ 2823.338923] x27: 0000007fa7787000 x26: 0020000000000f43 [ 2823.338995] x25: 0000007fa7800000 x24: ffffffc078017c38 [ 2823.339068] x23: 0120000018000f43 x22: 0000000000018000 [ 2823.339140] x21: 0020000018000f43 x20: ffffffc07887f9d8 [ 2823.339215] x19: ffffffbc00540000 x18: 0000007fe352a7e0 [ 2823.339287] x17: 0000007fa795f4c0 x16: ffffffc000087048 [ 2823.339358] x15: 0000000000592000 x14: 0000000000569538 [ 2823.339429] x13: 00000000005695c0 x12: 0000000000000007 [ 2823.339500] x11: 0000000000000028 x10: 0000000000000000 [ 2823.339568] x9 : 0000000000000002 x8 : ffffffc00085d5a0 [ 2823.339641] x7 : ffffffc000928000 x6 : 0000000000000006 [ 2823.339710] x5 : 0000000000000c38 x4 : ffffffc078fd8000 [ 2823.339780] x3 : 0000000000000000 x2 : 0000000000000000 [ 2823.339851] x1 : ffffffbc00000000 x0 : ffffffbc00540000 [ 2823.339914] [ 2823.339962] Process X (pid: 1575, stack limit = 0xffffffc078fd8058) [ 2823.340026] Stack: (0xffffffc078fdbbc0 to 0xffffffc078fdc000) [ 2823.340133] bbc0: 78fdbbe0 ffffffc0 00158adc ffffffc0 03640508 ffffffbc 00000000 ffffffc0 [ 2823.340248] bbe0: 78fdbc80 ffffffc0 0041c988 ffffffc0 78c05000 ffffffc0 7898c318 ffffffc0 [ 2823.340360] bc00: 00899db0 ffffffc0 78c05038 ffffffc0 00000000 00000000 78fd8000 ffffffc0 [ 2823.340475] bc20: 7808b840 ffffffc0 7898c318 ffffffc0 789bae58 ffffffc0 78fa7c40 ffffffc0 [ 2823.340588] bc40: a7907000 0000007f a7906fff 0000007f f8070879 ffffffff 78dd0ff0 ffffffc0 [ 2823.340702] bc60: a7907000 0000007f a7906fff 0000007f 78fa7c40 ffffffc0 78fd8000 ffffffc0 [ 2823.340816] bc80: 78fdbc90 ffffffc0 0041c914 ffffffc0 78fdbca0 ffffffc0 0040e [ 2823.340816] bc80: 78fdbc90 ffffffc0 0041c914 ffffffc0 78fdbca0 ffffffc0 0040ef68 ffffffc0 [ 2823.340930] bca0: 78fdbcf0 ffffffc0 0015fa44 ffffffc0 7898c6b8 ffffffc0 a7787000 0000007f [ 2823.341042] bcc0: 7898c6a8 ffffffc0 000000ff 00000000 a7907000 0000007f 78fd8000 ffffffc0 [ 2823.341152] bce0: 00000000 00000000 00000000 00000000 78fdbd70 ffffffc0 0015fed0 ffffffc0 [ 2823.341261] bd00: 00000007 00000000 000000ff 00000000 7808b840 ffffffc0 00000001 00000000 [ 2823.341372] bd20: 78fa7c40 ffffffc0 00180000 00000000 00000180 00000000 a7787000 0000007f [ 2823.341480] bd40: 00000007 00000000 78fd8000 ffffffc0 00000180 00000000 00000000 00000000 [ 2823.341593] bd60: 00000000 00000000 0017ee44 ffffffc0 78fdbde0 ffffffc0 0014c900 ffffffc0 [ 2823.341702] bd80: 00000000 00000000 00180000 00000000 00000000 00000000 7808b840 ffffffc0 [ 2823.341813] bda0: 78fa7ca0 ffffffc0 00000000 00000000 00180000 00000000 00638000 ffffffc0 [ 2823.341925] bdc0: 0086b000 ffffffc0 00604104 ffffffc0 00000000 00000000 78fdbe20 ffffffc0 [ 2823.342036] bde0: 78fdbe50 ffffffc0 0015e528 ffffffc0 00000001 00000000 00180000 00000000 [ 2823.342145] be00: 7808b840 ffffffc0 00000003 00000000 00000000 00000000 00000200 00000000 [ 2823.342252] be20: 00000000 00000000 00083988 ffffffc0 00000003 00000000 00000001 00000000 [ 2823.342363] be40: 00000000 00000000 0044ffb8 00000000 78fdbec0 ffffffc0 00087060 ffffffc0 [ 2823.342475] be60: 3faa4400 00000000 3faa3c40 00000000 ffffffff ffffffff a7bb85f8 0000007f [ 2823.342583] be80: 80000000 00000000 00000015 00000000 00000112 00000000 000000de 00000000 [ 2823.342695] bea0: ffffffff ffffffff 0017d770 ffffffc0 00001bf7 00000000 a7ee8000 0000007f [ 2823.342806] bec0: e352aa40 0000007f 000839ec ffffffc0 00000000 00000000 00180000 00000000 [ 2823.342912] bee0: 00000003 00000000 00000001 00000000 00000009 00000000 00000000 00000000 [ 2823.343020] bf00: 005a5048 00000000 00000002 00000000 000000de 00000000 005694d8 00000000 [ 2823.343129] bf20: 01010101 01010101 00000028 00000000 00000007 00000000 005695c0 00000000 [ 2823.343239] bf40: 00569538 00000000 00592000 00000000 a7bb85e4 0000007f a795f4c0 0000007f [ 2823.343349] bf60: e352a7e0 0000007f 3faa4400 00000000 3faa3c40 00000000 00000000 00000000 [ 2823.343459] bf80: 3faa5610 00000000 a7974000 0000007f e352adb8 0000007f 00000004 00000000 [ 2823.343570] bfa0: 00592000 00000000 a7963a90 0000007f 00591000 00000000 e352aa40 0000007f [ 2823.343681] bfc0: a794e8c4 0000007f e352aa40 0000007f a7bb85f8 0000007f 80000000 00000000 [ 2823.343791] bfe0: 00000000 00000000 000000de 00000000 dfdfdfcf cfdfdfdf dfdfdfcf cfdfdfdf [ 2823.343842] Call trace: [ 2823.343902] [<ffffffc00014c974>] page_mapping+0x0/0x3c [ 2823.343985] [<ffffffc000158adc>] remap_pfn_range+0x20c/0x368 [ 2823.344054] [<ffffffc00041c988>] clcdfb_mmap_io+0x64/0x78 [ 2823.344122] [<ffffffc00041c914>] clcdfb_mmap+0x44/0x54 [ 2823.344196] [<ffffffc00040ef68>] fb_mmap+0x78/0x128 [ 2823.344265] [<ffffffc00015fa44>] mmap_region+0x374/0x524 [ 2823.344337] [<ffffffc00015fed0>] do_mmap_pgoff+0x2dc/0x348 [ 2823.344406] [<ffffffc00014c900>] vm_mmap_pgoff+0x94/0xcc [ 2823.344478] [<ffffffc00015e528>] SyS_mmap_pgoff+0x194/0x1ec [ 2823.344555] [<ffffffc000087060>] sys_mmap+0x18/0x28 [ 2823.344637] Code: a8c17bfd d65f03c0 928002a0 17fffffd (f9400002) [ 2823.344753] ---[ end trace 3444d63facfbd008 ]---
Thoughts?
Regards, Tom
"Where's the kaboom!? There was supposed to be an earth-shattering kaboom!" Marvin Martian Tech Lead, Graphics Working Group | Linaro.org │ Open source software for ARM SoCs w) tom.gall att linaro.org h) tom_gall att mac.com
linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
On Thu, 2014-01-16 at 18:28 +0000, Ryan Harkin wrote:
On 16 January 2014 16:59, Tom Gall tom.gall@linaro.org wrote:
Now on the real bit of fun that I want to get to the bottom of.
This is from startx on the model.
I have -C cache_state_modelled=0 set. Would that have an affect here?
No. This doesn't effect the functionality of the model. From memory, this is a debugging option that tells the user (via output to the terminal where you launched the model) if there have been any cache state violations.
I think it's a bit more than that and tells the model to emulate the cache in a similar way to how hardware works, so if the running code doesn't perform cache maintenance correctly it will go horribly wrong as on real hardware.
-
Jon Medhurst (Tixy) -
Ryan Harkin -
Tom Gall