Hello,
Lately I have been seeing a LOT of kernel panics with brand new BeagleBone Black boards. All of them show this panic when first powered on:
[ 0.997639] Unhandled fault: external abort on non-linefetch (0x1008) at 0xe085c000
[ 1.005624] Internal error: : 1008 [#1] SMP THUMB2
[ 1.010615] Modules linked in:
[ 1.013803] CPU: 0 Not tainted (3.8.13-bone84 #1)
[ 1.019074] PC is at cpsw_probe+0x348/0x960
[ 1.023444] LR is at ioremap_page_range+0x95/0xf8
[ 1.028345] pc : [] lr : [] psr: a0000033
[ 1.028345] sp : df071e18 ip : 00000000 fp : df0d5400
[ 1.040311] r10: c07e2acc r9 : de2d1000 r8 : de2d1590
[ 1.045755] r7 : de2d1000 r6 : de2d1540 r5 : 00000000 r4 : e085c000
[ 1.052554] r3 : 80000000 r2 : 00000000 r1 : e085d000 r0 : e085c000
[ 1.059357] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA Thumb Segment kernel
[ 1.067146] Control: 50c5387d Table: 9e2e4019 DAC: 00000015
[ 1.073143] Process swapper/0 (pid: 1, stack limit = 0xdf070240)
[ 1.079400] Stack: (0xdf071e18 to 0xdf072000)
[ 1.083938] 1e00: 00000000 c00b6a49
[ 1.092451] 1e20: c082fbb8 c082fbb8 de2d1540 de2d1298 df0d5410 de5fac08 00000000 df071e90
[ 1.100970] 1e40: df071e90 c00ff173 22222222 22222222 00000000 c082fbb8 de5fac08 de2db7c0
[ 1.109486] 1e60: de5fac08 c00ff0af de5fac08 00000000 df071e90 de5fac88 df0d9c48 c00ff927
[ 1.118012] 1e80: df0494b8 c0049657 00000000 df0d5444 00000020 00000008 df0d5410 c08de0ec
[ 1.126531] 1ea0: df0d5410 c084d9d0 00000000 c07c4e55 00000102 c07e2acc 00000000 c02484c9
[ 1.135057] 1ec0: c02484b9 c024796b 00000000 df0d5410 c084d9d0 df0d5444 00000000 c0247acb
[ 1.143581] 1ee0: c084d9d0 c0247a81 00000000 c0246a9f df049478 df0c6180 c084d9d0 c0842e20
[ 1.152103] 1f00: de2db7c0 c024745f c06f3f5c c084d9d0 c084d9d0 df070000 c086ecc0 00000000
[ 1.160622] 1f20: c07c4e55 c0247dcd 00000000 c07cf748 df070000 c086ecc0 00000000 c07c4e55
[ 1.169146] 1f40: 00000102 c000867f 00000007 00000007 c0827c98 c07cf744 c07cf748 00000007
[ 1.177668] 1f60: c07cf728 c086ecc0 c07a91c9 c07e2acc 00000000 c07a96a3 00000007 00000007
[ 1.186183] 1f80: c07a91c9 c0cfbfc0 00000000 c044d1c1 00000000 00000000 00000000 00000000
[ 1.194710] 1fa0: 00000000 c044d1c7 00000000 c000c8fd 00000000 00000000 00000000 00000000
[ 1.203228] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 1.211755] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[ 1.220302] [] (cpsw_probe+0x348/0x960) from [] (platform_drv_probe+0x11/0x14)
[ 1.229645] [] (platform_drv_probe+0x11/0x14) from [] (driver_probe_device+0x53/0x168)
[ 1.239711] [] (driver_probe_device+0x53/0x168) from [] (__driver_attach+0x4b/0x4c)
[ 1.249495] [] (__driver_attach+0x4b/0x4c) from [] (bus_for_each_dev+0x27/0x48)
[ 1.258919] [] (bus_for_each_dev+0x27/0x48) from [] (bus_add_driver+0xe3/0x168)
[ 1.268356] [] (bus_add_driver+0xe3/0x168) from [] (driver_register+0x3d/0xc4)
[ 1.277692] [] (driver_register+0x3d/0xc4) from [] (do_one_initcall+0x1f/0xf4)
[ 1.287045] [] (do_one_initcall+0x1f/0xf4) from [] (kernel_init_freeable+0xc3/0x158)
[ 1.296933] [] (kernel_init_freeable+0xc3/0x158) from [] (kernel_init+0x7/0x98)
[ 1.306363] [] (kernel_init+0x7/0x98) from [] (ret_from_fork+0x11/0x34)
[ 1.315071] Code: f000 81d2 f8c7 05c0 (6803) f44f
[ 1.320069] —[ end trace d14620964e853f1d ]—
[ 1.325064] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
They seem to work fine initially then this starts happening. Once it starts the boards seem to only boot about 1% of the time.
I have verified that the SD-Card image I am using works fine on some older BeagleBone Black boards.
All of the failing boards appear to have a serial number date code of 1826, 1827, or 1828 (i.e. 000C1828BBBG2011).
I have tried searching for a solution, or explanation, to the problem and it appears to be related to the PHY not resetting correctly but all the info I found is quite old.
Is this a known problem? Is there a real solution? Is this just a problem with a batch of boards?
I’m really stuck with this, any help would be appreciated.
Thanks,
Hartley