I've got 2 UDOO quads. The second one was purchased about a month back and hasn't been used much since most of my work was on the first one that I had purchased. I recently put UDOObunto 1.0 on an SD card and booted the UDOO. It boots fine and runs ok, but I noticed the occasional lockup and freeze. I connected a USB cable to the serial port and it looks like I may have a unit with bad memory or maybe a bad CPU/GPU. The first UDOO with the same SD card never demonstrates any kernel faults like the one posted below. Does anyone know if there have been any hardware changes that would require a modification to the kernel? If not, does anyone know a good way to test memory on the unit so that I can demonstrate the need for an RMA? Code: [ 30.241720] Unable to handle kernel paging request at virtual address 000064b4 [ 30.248967] pgd = 80004000 [ 30.251721] [000064b4] *pgd=00000000 [ 30.255340] Internal error: Oops: 817 [#1] PREEMPT SMP [ 30.260491] Modules linked in: vivante drm ipv6 [ 30.265109] CPU: 1 Not tainted (3.0.35 #7) [ 30.269570] PC is at 0x80c9f954 [ 30.272743] LR is at clockevents_program_event+0xb8/0x128 [ 30.278162] pc : [<80c9f954>] lr : [<8009ec84>] psr: 400f0013 [ 30.278172] sp : ba377e48 ip : 001ddc38 fp : 80663754 [ 30.289674] r10: ba377ee4 r9 : 00000000 r8 : 00000000 [ 30.294912] r7 : d4000000 r6 : 120027b1 r5 : 00000001 r4 : 00000000 [ 30.301453] r3 : 000064b4 r2 : 00000005 r1 : 00000005 r0 : 00000000 [ 30.307998] Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 30.315323] Control: 10c53c7d Table: 4a79804a DAC: 00000015 [ 30.321083] Process kworker/1:1 (pid: 1460, stack limit = 0xba3762f0) [ 30.327540] Stack: (0xba377e48 to 0xba378000) [ 30.331917] 7e40: ba377ee4 80046e60 ffffffff 80095df8 80cd91ec 80cd91d4 [ 30.340118] 7e60: 00000000 00000001 ffffffff 80095f84 00000000 80064064 ffffffff ba377ee4 [ 30.348319] 7e80: bfd6e3c0 00000000 80038000 80c5db14 80c5db54 80095fb8 00000000 00000004 [ 30.356520] 7ea0: 80cb56fc 8048fb50 00000001 00000004 00000004 8006446c ba377ef4 800d93cc [ 30.364719] 7ec0: 00000000 00000000 00000000 00000004 00000000 00000000 00000000 00000000 [ 30.372920] 7ee0: 00000001 00000000 000f32a0 00060ae0 00000001 00000002 ba377f1c 80c5db18 [ 30.381121] 7f00: 00000000 80c5db18 80c5db54 80c5dcf0 80038d90 8c008d90 80038d90 8048ee10 [ 30.389321] 7f20: 00060ae0 80493610 00000001 bfdbae40 8c0102e0 8c016900 00000000 80493538 [ 30.397521] 7f40: 80cd9254 8c016905 00000009 8008c538 bffca000 00000001 80c5dcf0 bfdbae40 [ 30.405722] 7f60: 8c0102e0 8c0102e8 bfdbae50 80c5dcf0 80039440 ba376000 00000009 8008cc18 [ 30.413923] 7f80: 00000013 bffa9ef8 bfdbae50 80039440 80039440 80039440 8008cad0 bffa9ee8 [ 30.422122] 7fa0: ba377fcc bfdbae40 8008cad0 00000000 00000000 00000000 00000000 80090708 [ 30.430323] 7fc0: bffa9ee8 00000000 bfdbae40 00000000 00000000 00000000 ba377fd8 ba377fd8 [ 30.438524] 7fe0: 00000000 bffa9ee8 80090684 80041080 00000013 80041080 20000920 00100000 [ 30.446741] [<8009ec84>] (clockevents_program_event+0xb8/0x128) from [<00000001>] (0x1) [ 30.454769] Code: 804933b4 00000000 00000000 65746e69 (74636172) [ 30.461286] ---[ end trace c4d9cd1f30c83644 ]--- [ 30.465982] note: kworker/1:1[1460] exited with preempt_count 1 [ 30.472074] Unable to handle kernel paging request at virtual address fffffffc [ 30.479315] pgd = 80004000 [ 30.482033] [fffffffc] *pgd=4fffe821, *pte=00000000, *ppte=00000000 [ 30.488365] Internal error: Oops: 17 [#2] PREEMPT SMP [ 30.493429] Modules linked in: vivante drm ipv6 [ 30.498044] CPU: 1 Tainted: G D (3.0.35 #7) [ 30.503392] PC is at kthread_data+0x4/0xc [ 30.507422] LR is at wq_worker_sleeping+0xc/0xd0 [ 30.512057] pc : [<800902d0>] lr : [<8008bb60>] psr: 200f0193 [ 30.512067] sp : ba377b48 ip : 00000000 fp : ba377bfc [ 30.523568] r10: ba3c7da8 r9 : ba3c7d2c r8 : ba377c1c [ 30.528808] r7 : ba376000 r6 : ba3c7c00 r5 : 00000001 r4 : 00000001 [ 30.535350] r3 : 00000000 r2 : 00000000 r1 : 00000001 r0 : ba3c7c00 [ 30.541894] Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user [ 30.549133] Control: 10c53c7d Table: 4a79804a DAC: 00000015 [ 30.554895] Process kworker/1:1 (pid: 1460, stack limit = 0xba3762f0) [ 30.561352] Stack: (0xba377b48 to 0xba378000) [ 30.565729] 7b40: 8c010f40 8065f01c 8bff0800 800f7558 8bf42e00 00000bdd [ 30.573931] 7b60: bf8428e4 80c5dcf0 00000001 80cb5fa0 0bfd8000 80038f40 80038f40 800781a0 [ 30.582133] 7b80: 80038f40 800381b4 ba112a80 bf8428e4 00200200 00000001 ba3c7c00 ba3c7c00 [ 30.590334] 7ba0: bf8428e4 800781fc ba3c7c00 00000001 8c010f40 bf8423e0 ba377bdc 80068bf0 [ 30.598535] 7bc0: ba3c7c08 80038260 00000000 ba376000 80cbd364 ba3c7f00 ba377bd8 ba3c7c00 [ 30.606735] 7be0: ffffffff 00000000 bff8c000 ba377c1c ba3c7d2c ba3c7d2c ba3c7d2c 80079554 [ 30.614937] 7c00: 00000000 ba377c14 80c6ec14 00000001 80c9f958 ba377c14 ba377c14 ba3c7d74 [ 30.623137] 7c20: ba377c8f ba376000 00000000 00000001 80c9f956 ba377c8f 80c9f958 00000000 [ 30.631338] 7c40: ba377c60 80044094 ba3762f0 0000000b ffffffff 00000000 00000000 00000008 [ 30.639539] 7c60: 39343038 34623333 30303020 30303030 30302030 30303030 36203030 36343735 [ 30.647740] 7c80: 20393665 36343728 37313633 00202932 000f0113 ba3c7c00 80663754 ba377e00 [ 30.655941] 7ca0: 000064b4 00000000 00000817 00000000 000f0113 ba3c7c00 80663754 8004adf4 [ 30.664142] 7cc0: 00000000 000064b4 00000817 ba377e00 ba377e00 8004af94 00000024 00000001 [ 30.672344] 7ce0: ba376000 80c4a040 ba3c7c00 00000000 05d061c6 00000007 ff771150 ffffffff [ 30.680544] 7d00: ba3c7c00 800683e4 890ff721 00000006 00006590 ba39bc38 ba39bc38 8c010f90 [ 30.688745] 7d20: 00000000 00000001 ff76abc0 ffffffff 8c010f90 8006b71c ba376000 00000817 [ 30.696946] 7d40: 80c61ca8 000064b4 ba377e00 00000000 000f0113 ba377ee4 80663754 8003a400 [ 30.705147] 7d60: ba39bc38 ba3c7c38 ba377d8c 80068874 ba3c7c00 8c010f40 00000001 ba39bf0c [ 30.713348] 7d80: 200f0093 00000000 ba377d9c 80067ce0 ba39bc00 8c010f40 ba377dbc 80067d00 [ 30.721549] 7da0: ba39bc00 00000001 00000001 ba39bf0c 1dcd6500 00000000 ba377dec 00000003 [ 30.729750] 7dc0: 00001d41 00000000 0000001d 00000000 3c0f1085 00000000 ffffffff 00000000 [ 30.737966] 7de0: 802c4c10 8c010040 fcbe09d2 0000040f 00000007 120027b1 d4000000 8003ff50 [ 30.746180] 7e00: 00000000 00000005 00000005 000064b4 00000000 00000001 120027b1 d4000000 [ 30.754385] 7e20: 00000000 00000000 ba377ee4 80663754 001ddc38 ba377e48 8009ec84 80c9f954 [ 30.762586] 7e40: 400f0013 ffffffff ba377ee4 80046e60 ffffffff 80095df8 80cd91ec 80cd91d4 [ 30.770787] 7e60: 00000000 00000001 ffffffff 80095f84 00000000 80064064 ffffffff ba377ee4 [ 30.778988] 7e80: bfd6e3c0 00000000 80038000 80c5db14 80c5db54 80095fb8 00000000 00000004 [ 30.787188] 7ea0: 80cb56fc 8048fb50 00000001 00000004 00000004 8006446c ba377ef4 800d93cc [ 30.795387] 7ec0: 00000000 00000000 00000000 00000004 00000000 00000000 00000000 00000000 [ 30.803588] 7ee0: 00000001 00000000 000f32a0 00060ae0 00000001 00000002 ba377f1c 80c5db18 [ 30.811788] 7f00: 00000000 80c5db18 80c5db54 80c5dcf0 80038d90 8c008d90 80038d90 8048ee10 [ 30.819990] 7f20: 00060ae0 80493610 00000001 bfdbae40 8c0102e0 8c016900 00000000 80493538 [ 30.828191] 7f40: 80cd9254 8c016905 00000009 8008c538 bffca000 00000001 80c5dcf0 bfdbae40 [ 30.836392] 7f60: 8c0102e0 8c0102e8 bfdbae50 80c5dcf0 80039440 ba376000 00000009 8008cc18 [ 30.844594] 7f80: 00000013 bffa9ef8 bfdbae50 80039440 80039440 80039440 8008cad0 bffa9ee8 [ 30.852794] 7fa0: ba377fcc bfdbae40 8008cad0 00000000 00000000 00000000 00000000 80090708 [ 30.860993] 7fc0: bffa9ee8 00000000 bfdbae40 00000001 00000000 00000000 ba377fd8 ba377fd8 [ 30.869195] 7fe0: 00000000 bffa9ee8 80090684 80041080 00000013 80041080 20000920 00100000 [ 30.877416] [<800902d0>] (kthread_data+0x4/0xc) from [<8008bb60>] (wq_worker_sleeping+0xc/0xd0) [ 30.886160] [<8008bb60>] (wq_worker_sleeping+0xc/0xd0) from [<8065f01c>] (__schedule+0x364/0x690) [ 30.895078] [<8065f01c>] (__schedule+0x364/0x690) from [<80079554>] (do_exit+0x4f0/0x730) [ 30.903299] [<80079554>] (do_exit+0x4f0/0x730) from [<80044094>] (die+0x250/0x2c8) [ 30.910910] [<80044094>] (die+0x250/0x2c8) from [<8004adf4>] (__do_kernel_fault+0x64/0x84) [ 30.919205] [<8004adf4>] (__do_kernel_fault+0x64/0x84) from [<8004af94>] (do_page_fault+0x180/0x2e0) [ 30.928386] [<8004af94>] (do_page_fault+0x180/0x2e0) from [<8003a400>] (do_DataAbort+0x34/0x98) [ 30.937117] [<8003a400>] (do_DataAbort+0x34/0x98) from [<8003ff50>] (__dabt_svc+0x70/0xa0) [ 30.945398] Exception stack(0xba377e00 to 0xba377e48) [ 30.950471] 7e00: 00000000 00000005 00000005 000064b4 00000000 00000001 120027b1 d4000000 [ 30.958671] 7e20: 00000000 00000000 ba377ee4 80663754 001ddc38 ba377e48 8009ec84 80c9f954 [ 30.966864] 7e40: 400f0013 ffffffff [ 30.970378] [<8003ff50>] (__dabt_svc+0x70/0xa0) from [<80c9f954>] (0x80c9f954) [ 30.977625] Code: e593317c e5130008 e12fff1e e590317c (e5130004)
Got this from a login attempt on the serial port while also using VNC to the unit. Code: [ 940.325771] Internal error: Oops - undefined instruction: 0 [#1] PREEMPT SMP [ 940.332831] Modules linked in: vivante drm ipv6 [ 940.337422] CPU: 0 Not tainted (3.0.35 #7) [ 940.341883] PC is at clockevent_delta2ns+0x1c/0x94 [ 940.346681] LR is at clockevents_config+0x5c/0x78 [ 940.351392] pc : [<8009ee2c>] lr : [<8009ef00>] psr: 800f0093 [ 940.351397] sp : bffa9d68 ip : 00000000 fp : 80663754 [ 940.362888] r10: bffa9e8c r9 : bffa9e8c r8 : 80663744 [ 940.368116] r7 : 8c008040 r6 : 80000000 r5 : ffffffff r4 : 32b020c5 [ 940.374647] r3 : 00000001 r2 : 32b020c5 r1 : 8c008040 r0 : 0000000f [ 940.381181] Flags: Nzcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel [ 940.388581] Control: 10c53c7d Table: 4116804a DAC: 00000015 [ 940.394331] Process kworker/0:2 (pid: 3946, stack limit = 0xbffa82f0) [ 940.400777] Stack: (0xbffa9d68 to 0xbffaa000) [ 940.405141] 9d60: 179a7b00 8c008040 80046e70 bffa9dc4 80663744 8009ef00 [ 940.413327] 9d80: 0000000a 80060f58 00000000 8c008040 600f0013 8009ef2c 80cb4f28 80054c40 [ 940.421513] 9da0: 80cb4f28 80060f58 80cb4f28 00000000 600f0013 800a57d8 0011edd8 802c4c10 [ 940.429697] 9dc0: bfe7c200 00000000 00000000 00000000 00000000 00000000 2f34f600 ffffffff [ 940.437882] 9de0: 00000000 00000001 bffa9e8c 80c9f664 bffa9e8c 80046e60 ffffffff 80095df8 [ 940.446066] 9e00: 80cd91ec 80cd91d4 00000000 00000001 ffffffff 80095f84 00000000 80064064 [ 940.454251] 9e20: ffffffff bffa9e8c bfc7f3c0 00000000 80038000 80c5db14 80c5db54 80095fb8 [ 940.462436] 9e40: 00000000 00000004 80cb56fc 8048fb50 00000001 00000004 00000004 8006446c [ 940.470620] 9e60: bffa9e9c 8007a61c 000003ac 00000000 00000000 00000004 00000003 00000003 [ 940.478805] 9e80: 3719ca67 8007a5dc 8c020568 00000000 000f32a0 000c15c0 bfc7f401 00000001 [ 940.486989] 9ea0: bfc7f3c0 80c5db18 bfc7f3c0 80c9f744 000f32a0 00000004 00000243 80c5db54 [ 940.495175] 9ec0: 03fa3fe0 8048ee10 80c9f744 804922bc 00000000 0bfe8000 bfc86580 8c008f40 [ 940.503359] 9ee0: 03fa3fe0 8c008c98 bfc86580 00000000 00000001 80038f40 800381c0 8c008d04 [ 940.511544] 9f00: 80038f40 800381b4 600f0013 00000000 00000000 800381c0 bfef9e80 bfbefe98 [ 940.519729] 9f20: 3808a2ba 00000000 bfbefe98 ba0b8080 8c0082e0 8c00c500 00000000 80491e3c [ 940.527913] 9f40: 8c008cbc 8c00c505 00000009 8008c538 80c5dcf0 00000001 00000000 ba0b8080 [ 940.536099] 9f60: 8c0082e0 8c0082e8 ba0b8090 80c5dcf0 80039440 bffa8000 00000009 8008cc18 [ 940.544284] 9f80: 00000013 bf8afef8 ba0b8090 80039440 80039440 80039440 bffa9fbc bf8afee8 [ 940.552468] 9fa0: bffa9fcc ba0b8080 8008cad0 00000000 00000000 00000000 00000000 80090708 [ 940.560653] 9fc0: bf8afee8 00000000 ba0b8080 00000000 00000000 00000000 bffa9fd8 bffa9fd8 [ 940.568838] 9fe0: 00000000 bf8afee8 80090684 80041080 00000013 80041080 f2f2f2f2 f2f2f2f2 [ 940.577033] [<8009ee2c>] (clockevent_delta2ns+0x1c/0x94) from [<8009ef00>] (clockevents_config+0x5c/0x78) [ 940.586612] [<8009ef00>] (clockevents_config+0x5c/0x78) from [<8009ef2c>] (clockevents_update_freq+0x10/0x48) [ 940.596545] [<8009ef2c>] (clockevents_update_freq+0x10/0x48) from [<800a57d8>] (smp_call_function_single+0x9c/0x1f4) [ 940.607082] [<800a57d8>] (smp_call_function_single+0x9c/0x1f4) from [<80046e60>] (twd_cpufreq_transition+0x48/0x58) [ 940.617537] [<80046e60>] (twd_cpufreq_transition+0x48/0x58) from [<80095df8>] (notifier_call_chain+0x44/0x84) [ 940.627466] [<80095df8>] (notifier_call_chain+0x44/0x84) from [<80095f84>] (__srcu_notifier_call_chain+0x44/0x60) [ 940.637740] [<80095f84>] (__srcu_notifier_call_chain+0x44/0x60) from [<80095fb8>] (srcu_notifier_call_chain+0x18/0x20) [ 940.648455] [<80095fb8>] (srcu_notifier_call_chain+0x18/0x20) from [<8048fb50>] (cpufreq_notify_transition+0xa0/0xe0) [ 940.659081] [<8048fb50>] (cpufreq_notify_transition+0xa0/0xe0) from [<8006446c>] (mxc_set_target+0x1b4/0x2b4) [ 940.669007] [<8006446c>] (mxc_set_target+0x1b4/0x2b4) from [<8048ee10>] (__cpufreq_driver_target+0x54/0x60) [ 940.678763] [<8048ee10>] (__cpufreq_driver_target+0x54/0x60) from [<804922bc>] (do_dbs_timer+0x480/0x498) [ 940.688345] [<804922bc>] (do_dbs_timer+0x480/0x498) from [<8008c538>] (process_one_work+0x108/0x3e4) [ 940.697489] [<8008c538>] (process_one_work+0x108/0x3e4) from [<8008cc18>] (worker_thread+0x148/0x450) [ 940.706723] [<8008cc18>] (worker_thread+0x148/0x450) from [<80090708>] (kthread+0x84/0x8c) [ 940.715005] [<80090708>] (kthread+0x84/0x8c) from [<80041080>] (kernel_thread_exit+0x0/0x8) [ 940.723365] Code: e1a07001 e2565020 e2663020 e1a06610 (f1a05510) [ 940.729512] ---[ end trace 9f421166ac808e01 ]--- [ 940.734174] note: kworker/0:2[3946] exited with preempt_count 1 [ 940.740220] Unable to handle kernel paging request at virtual address fffffffc [ 940.747449] pgd = 80004000 [ 940.750160] [fffffffc] *pgd=4fffe821, *pte=00000000, *ppte=00000000 [ 940.756472] Internal error: Oops: 17 [#2] PREEMPT SMP [ 940.761526] Modules linked in: vivante drm ipv6 [ 940.766115] CPU: 0 Tainted: G D (3.0.35 #7) [ 940.771442] PC is at kthread_data+0x4/0xc [ 940.775458] LR is at wq_worker_sleeping+0xc/0xd0 [ 940.780081] pc : [<800902d0>] lr : [<8008bb60>] psr: 200f0093 [ 940.780086] sp : bffa9b08 ip : 00000000 fp : bffa9bbc [ 940.791576] r10: ba3e2728 r9 : ba3e26ac r8 : bffa9bdc [ 940.796805] r7 : bffa8000 r6 : ba3e2580 r5 : 00000000 r4 : 00000000 [ 940.803336] r3 : 00000000 r2 : 00000000 r1 : 00000000 r0 : ba3e2580 [ 940.809868] Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user [ 940.817095] Control: 10c53c7d Table: 4116804a DAC: 00000015 [ 940.822845] Process kworker/0:2 (pid: 3946, stack limit = 0xbffa82f0) [ 940.829290] Stack: (0xbffa9b08 to 0xbffaa000) [ 940.833654] 9b00: 8c008f40 8065f01c 8bff1000 800f7558 8bf51500 00001820 [ 940.841840] 9b20: bf886b84 80c5dcf0 00000001 80cb5fa0 0bfd0000 80038f40 80038f40 800781a0 [ 940.850026] 9b40: 80038f40 800381b4 ba60c660 bf886b84 00200200 00000001 ba3e2580 ba3e2580 [ 940.858211] 9b60: bf886b84 800781fc ba3e2580 00000001 8c008f40 bf886680 bffa9b9c 80068bf0 [ 940.866397] 9b80: ba3e2588 80038260 00000000 bffa8000 80cbd364 ba3e2880 bffa9b98 ba3e2580 [ 940.874582] 9ba0: ffffffff 00000000 bff8c000 bffa9bdc ba3e26ac ba3e26ac ba3e26ac 80079554 [ 940.882767] 9bc0: 00000000 bffa9bd4 80c6ec14 00000001 bffa8000 bffa9bd4 bffa9bd4 ba3e26f4 [ 940.890953] 9be0: bffa9c4f bffa8000 00000000 00000001 8009ee2e bffa9c4f 8009ee30 00000000 [ 940.899138] 9c00: bffa9c20 80044094 bffa82f0 0000000b 8c008258 00000000 00000000 00000008 [ 940.907324] 9c20: 30613165 31303037 35326520 32303536 32652030 30333636 65203032 36306131 [ 940.915509] 9c40: 20303136 61316628 31353530 00202930 80cb4d68 ffffffff 80c48000 bffa9d20 [ 940.923695] 9c60: 8009ee2c f1a05510 00000000 f1000000 800400c4 bffa9e8c 80663754 8003a13c [ 940.931880] 9c80: 00000006 80096434 00000004 00000000 00030001 8009ee2c bffa9d1c 00000000 [ 940.940065] 9ca0: ff8f8d80 bffa9d64 bfc0c8e8 80c60330 00000040 80392388 00000000 80038f40 [ 940.948251] 9cc0: 80038f40 bffa9d64 80038f40 800381b4 4fb06de0 8004df0c ba3e2580 00000000 [ 940.956436] 9ce0: ecf1f292 000000da ff7769da ffffffff ba3e2580 800683e4 7a189122 00000004 [ 940.964622] 9d00: 000048eb bff8c7b8 ffffffff bffa9d54 80040454 00000000 f1000000 800400c4 [ 940.972807] 9d20: 0000000f 8c008040 32b020c5 00000001 32b020c5 ffffffff 80000000 8c008040 [ 940.980992] 9d40: 80663744 bffa9e8c bffa9e8c 80663754 00000000 bffa9d68 8009ef00 8009ee2c [ 940.989178] 9d60: 800f0093 ffffffff 179a7b00 8c008040 80046e70 bffa9dc4 80663744 8009ef00 [ 940.997363] 9d80: 0000000a 80060f58 00000000 8c008040 600f0013 8009ef2c 80cb4f28 80054c40 [ 941.005548] 9da0: 80cb4f28 80060f58 80cb4f28 00000000 600f0013 800a57d8 0011edd8 802c4c10 [ 941.013733] 9dc0: bfe7c200 00000000 00000000 00000000 00000000 00000000 2f34f600 ffffffff [ 941.021918] 9de0: 00000000 00000001 bffa9e8c 80c9f664 bffa9e8c 80046e60 ffffffff 80095df8 [ 941.030103] 9e00: 80cd91ec 80cd91d4 00000000 00000001 ffffffff 80095f84 00000000 80064064 [ 941.038287] 9e20: ffffffff bffa9e8c bfc7f3c0 00000000 80038000 80c5db14 80c5db54 80095fb8 [ 941.046472] 9e40: 00000000 00000004 80cb56fc 8048fb50 00000001 00000004 00000004 8006446c [ 941.054657] 9e60: bffa9e9c 8007a61c 000003ac 00000000 00000000 00000004 00000003 00000003 [ 941.062842] 9e80: 3719ca67 8007a5dc 8c020568 00000000 000f32a0 000c15c0 bfc7f401 00000001 [ 941.071028] 9ea0: bfc7f3c0 80c5db18 bfc7f3c0 80c9f744 000f32a0 00000004 00000243 80c5db54 [ 941.079213] 9ec0: 03fa3fe0 8048ee10 80c9f744 804922bc 00000000 0bfe8000 bfc86580 8c008f40 [ 941.087398] 9ee0: 03fa3fe0 8c008c98 bfc86580 00000000 00000001 80038f40 800381c0 8c008d04 [ 941.095583] 9f00: 80038f40 800381b4 600f0013 00000000 00000000 800381c0 bfef9e80 bfbefe98 [ 941.103769] 9f20: 3808a2ba 00000000 bfbefe98 ba0b8080 8c0082e0 8c00c500 00000000 80491e3c [ 941.111954] 9f40: 8c008cbc 8c00c505 00000009 8008c538 80c5dcf0 00000001 00000000 ba0b8080 [ 941.120139] 9f60: 8c0082e0 8c0082e8 ba0b8090 80c5dcf0 80039440 bffa8000 00000009 8008cc18 [ 941.128324] 9f80: 00000013 bf8afef8 ba0b8090 80039440 80039440 80039440 bffa9fbc bf8afee8 [ 941.136520] 9fa0: bffa9fcc ba0b8080 8008cad0 00000000 00000000 00000000 00000000 80090708 [ 941.144705] 9fc0: bf8afee8 00000000 ba0b8080 00000001 00000000 00000000 bffa9fd8 bffa9fd8 [ 941.152891] 9fe0: 00000000 bf8afee8 80090684 80041080 00000013 80041080 f2f2f2f2 f2f2f2f2 [ 941.161085] [<800902d0>] (kthread_data+0x4/0xc) from [<8008bb60>] (wq_worker_sleeping+0xc/0xd0) [ 941.169803] [<8008bb60>] (wq_worker_sleeping+0xc/0xd0) from [<8065f01c>] (__schedule+0x364/0x690) [ 941.178696] [<8065f01c>] (__schedule+0x364/0x690) from [<80079554>] (do_exit+0x4f0/0x730) [ 941.186892] [<80079554>] (do_exit+0x4f0/0x730) from [<80044094>] (die+0x250/0x2c8) [ 941.194486] [<80044094>] (die+0x250/0x2c8) from [<8003a13c>] (do_undefinstr+0x138/0x148) [ 941.202590] [<8003a13c>] (do_undefinstr+0x138/0x148) from [<800400c4>] (__und_svc+0x44/0x60) [ 941.211032] Exception stack(0xbffa9d20 to 0xbffa9d68) [ 941.216091] 9d20: 0000000f 8c008040 32b020c5 00000001 32b020c5 ffffffff 80000000 8c008040 [ 941.224277] 9d40: 80663744 bffa9e8c bffa9e8c 80663754 00000000 bffa9d68 8009ef00 8009ee2c [ 941.232458] 9d60: 800f0093 ffffffff [ 941.235962] [<800400c4>] (__und_svc+0x44/0x60) from [<8009ee2c>] (clockevent_delta2ns+0x1c/0x94) [ 941.244760] [<8009ee2c>] (clockevent_delta2ns+0x1c/0x94) from [<8009ef00>] (clockevents_config+0x5c/0x78) [ 941.254339] [<8009ef00>] (clockevents_config+0x5c/0x78) from [<8009ef2c>] (clockevents_update_freq+0x10/0x48) [ 941.264270] [<8009ef2c>] (clockevents_update_freq+0x10/0x48) from [<800a57d8>] (smp_call_function_single+0x9c/0x1f4) [ 941.274807] [<800a57d8>] (smp_call_function_single+0x9c/0x1f4) from [<80046e60>] (twd_cpufreq_transition+0x48/0x58) [ 941.285258] [<80046e60>] (twd_cpufreq_transition+0x48/0x58) from [<80095df8>] (notifier_call_chain+0x44/0x84) [ 941.295187] [<80095df8>] (notifier_call_chain+0x44/0x84) from [<80095f84>] (__srcu_notifier_call_chain+0x44/0x60) [ 941.305461] [<80095f84>] (__srcu_notifier_call_chain+0x44/0x60) from [<80095fb8>] (srcu_notifier_call_chain+0x18/0x20) [ 941.316174] [<80095fb8>] (srcu_notifier_call_chain+0x18/0x20) from [<8048fb50>] (cpufreq_notify_transition+0xa0/0xe0) [ 941.326797] [<8048fb50>] (cpufreq_notify_transition+0xa0/0xe0) from [<8006446c>] (mxc_set_target+0x1b4/0x2b4) [ 941.336724] [<8006446c>] (mxc_set_target+0x1b4/0x2b4) from [<8048ee10>] (__cpufreq_driver_target+0x54/0x60) [ 941.346478] [<8048ee10>] (__cpufreq_driver_target+0x54/0x60) from [<804922bc>] (do_dbs_timer+0x480/0x498) [ 941.356058] [<804922bc>] (do_dbs_timer+0x480/0x498) from [<8008c538>] (process_one_work+0x108/0x3e4) [ 941.365201] [<8008c538>] (process_one_work+0x108/0x3e4) from [<8008cc18>] (worker_thread+0x148/0x450) [ 941.374432] [<8008cc18>] (worker_thread+0x148/0x450) from [<80090708>] (kthread+0x84/0x8c) [ 941.382708] [<80090708>] (kthread+0x84/0x8c) from [<80041080>] (kernel_thread_exit+0x0/0x8) [ 941.391068] Code: e593317c e5130008 e12fff1e e590317c (e5130004) HELP!
Hi I have a similar problem. Did you manage to resolve the kernel crash? I am running my UDOO QUAD with an USB HDD connected through the USB. I am using the serial to debug a python script. The fault randomly happens after a couple of hours of running. I am not very experienced debugging kernels so if anyone can give me a hint where to go or what to do I will really appreciate it. Code: Taking sample of Volts_0 1970-01-01 13:42:15, 220, 3.261 [13398.833473] Unhandled fault: imprecise external abort (0x1406) at 0x2b60a190 Taking sample of Volts_0[13398.840550] Internal error: : 1406 [#1] PREEMPT SMP [13398.847505] Modules linked in: vivante1970-01-01 13:43:15, 221, 3.265 drm ipv6 [13398.855144] CPU: 0 Not tainted (3.0.35 #7) [13398.859624] PC is at default_idle+0x24/0x28 [13398.863825] LR is at arch_idle+0xc0/0x104 [13398.867852] pc : [<80041124>] lr : [<8004f37c>] psr: 400f0013 [13398.867861] sp : 80c49fb0 ip : 00000000 fp : 00000000 [13398.879362] r10: 00000000 r9 : 412fc09a r8 : 1000406a [13398.884600] r7 : 80c6141c r6 : 80663744 r5 : 80cb4d64 r4 : 80c48000 [13398.891141] r3 : 00000000 r2 : 00000001 r1 : 800f0093 r0 : 80cbc280 [13398.897686] Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [13398.905010] Control: 10c53c7d Table: 49f8004a DAC: 00000015 [13398.910771] Process swapper (pid: 0, stack limit = 0x80c482f0) [13398.916619] Stack: (0x80c49fb0 to 0x80c4a000) [13398.920995] 9fa0: 80c48000 800417e0 80c5dbb8 80cb4cc0 [13398.929197] 9fc0: 8002f138 00000000 1000406a 800088b0 80008418 00000000 00000000 8002f138 [13398.937397] 9fe0: 00000000 10c53c7d 80c5dac0 8002f134 80c61414 1000803c 00000000 00000000 [13398.945613] [<80041124>] (default_idle+0x24/0x28) from [<800417e0>] (cpu_idle+0xc8/0x108) [13398.953823] [<800417e0>] (cpu_idle+0xc8/0x108) from [<800088b0>] (start_kernel+0x254/0x294) [13398.962202] [<800088b0>] (start_kernel+0x254/0x294) from [<1000803c>] (0x1000803c) [13398.969795] Code: e3130002 1a000000 eb003866 f1080080 (e8bd8010) [13398.976365] ---[ end trace 15ad4ffbe0580079 ]--- [13398.981019] Kernel panic - not syncing: Attempted to kill the idle task! [13398.987813] [<800475d4>] (unwind_backtrace+0x0/0xfc) from [<8065e690>] (panic+0x74/0x19c) [13398.996083] [<8065e690>] (panic+0x74/0x19c) from [<80079770>] (do_exit+0x70c/0x730) [13399.003877] [<80079770>] (do_exit+0x70c/0x730) from [<80044094>] (die+0x250/0x2c8) [13399.011592] [<80044094>] (die+0x250/0x2c8) from [<8003a454>] (do_DataAbort+0x88/0x98) [13399.019504] [<8003a454>] (do_DataAbort+0x88/0x98) from [<8003ff50>] (__dabt_svc+0x70/0xa0) [13399.027890] Exception stack(0x80c49f68 to 0x80c49fb0) [13399.033008] 9f60: 80cbc280 800f0093 00000001 00000000 80c48000 80cb4d64 [13399.041249] 9f80: 80663744 80c6141c 1000406a 412fc09a 00000000 00000000 00000000 80c49fb0 [13399.049480] 9fa0: 8004f37c 80041124 400f0013 ffffffff [13399.054603] [<8003ff50>] (__dabt_svc+0x70/0xa0) from [<80041124>] (default_idle+0x24/0x28) [13399.062900] [<80041124>] (default_idle+0x24/0x28) from [<800417e0>] (cpu_idle+0xc8/0x108) [13399.071139] [<800417e0>] (cpu_idle+0xc8/0x108) from [<800088b0>] (start_kernel+0x254/0x294) [13399.079545] [<800088b0>] (start_kernel+0x254/0x294) from [<1000803c>] (0x1000803c) [13399.087168] CPU1: stopping [13399.089922] [<800475d4>] (unwind_backtrace+0x0/0xfc) from [<8003a26c>] (do_IPI+0x120/0x14c) [13399.098306] [<8003a26c>] (do_IPI+0x120/0x14c) from [<8003ffcc>] (__irq_svc+0x4c/0xe8) [13399.106151] Exception stack(0xbffadf90 to 0xbffadfd8) [13399.111220] df80: 80cbc280 800f0093 00000001 00000000 [13399.119421] dfa0: bffac000 80cb4d64 80663744 80c6141c 1000406a 412fc09a 00000000 00000000 [13399.127619] dfc0: 00000000 bffadfd8 8004f37c 80041124 400f0013 ffffffff [13399.134262] [<8003ffcc>] (__irq_svc+0x4c/0xe8) from [<80041124>] (default_idle+0x24/0x28) [13399.142469] [<80041124>] (default_idle+0x24/0x28) from [<800417e0>] (cpu_idle+0xc8/0x108) [13399.150673] [<800417e0>] (cpu_idle+0xc8/0x108) from [<1065b774>] (0x1065b774) [13399.157825] CPU2: stopping [13399.160576] [<800475d4>] (unwind_backtrace+0x0/0xfc) from [<8003a26c>] (do_IPI+0x120/0x14c) [13399.168960] [<8003a26c>] (do_IPI+0x120/0x14c) from [<8003ffcc>] (__irq_svc+0x4c/0xe8) [13399.176806] Exception stack(0xbffb5f90 to 0xbffb5fd8) [13399.181875] 5f80: 80cbc280 600f0093 00000001 00000000 [13399.190075] 5fa0: bffb4000 80cb4d64 80663744 80c6141c 1000406a 412fc09a 00000000 00000000 [13399.198272] 5fc0: 00000000 bffb5fd8 8004f37c 80041124 400f0013 ffffffff [13399.204915] [<8003ffcc>] (__irq_svc+0x4c/0xe8) from [<80041124>] (default_idle+0x24/0x28) [13399.213122] [<80041124>] (default_idle+0x24/0x28) from [<800417e0>] (cpu_idle+0xc8/0x108) [13399.221325] [<800417e0>] (cpu_idle+0xc8/0x108) from [<1065b774>] (0x1065b774) [13399.228478] CPU3: stopping [13399.231229] [<800475d4>] (unwind_backtrace+0x0/0xfc) from [<8003a26c>] (do_IPI+0x120/0x14c) [13399.239613] [<8003a26c>] (do_IPI+0x120/0x14c) from [<8003ffcc>] (__irq_svc+0x4c/0xe8) [13399.247458] Exception stack(0xbff01f90 to 0xbff01fd8) [13399.252527] 1f80: 80cbc280 600f0093 00000001 00000000 [13399.260727] 1fa0: bff00000 80cb4d64 80663744 80c6141c 1000406a 412fc09a 00000000 00000000 [13399.268924] 1fc0: 00000000 bff01fd8 8004f37c 80041124 400f0013 ffffffff [13399.275568] [<8003ffcc>] (__irq_svc+0x4c/0xe8) from [<80041124>] (default_idle+0x24/0x28) [13399.283775] [<80041124>] (default_idle+0x24/0x28) from [<800417e0>] (cpu_idle+0xc8/0x108) [13399.291978] [<800417e0>] (cpu_idle+0xc8/0x108) from [<1065b774>] (0x1065b774)