kernel-packages team mailing list archive

[Steve Capper <steve.capper@xxxxxxxxxx>]

Hi,

We get the following crash with the proposed kernel:

Cheers,
--
Steve

[251283.329169] Unable to handle kernel NULL pointer dereference at virtual address 000000d8
[251283.337318] pgd = ffffffc00007d000
[251283.340794] [000000d8] *pgd=00000043f0009003, *pmd=00000043f000a003, *pte=0060000078090707
[251283.349136] Internal error: Oops: 96000005 [#1] SMP
[251283.354074] Modules linked in: rbd libceph libcrc32c xgene_rng uio_pdrv_genirq uio btrfs xor raid6_pq realtek ahci_xgene libahci_platform libahci xgene_enet
[251283.368246] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 3.16.0-27-generic #36
[251283.375257] task: ffffffc3f01e0c40 ti: ffffffc3f01e8000 task.ti: ffffffc3f01e8000
[251283.382792] PC is at xgene_enet_process_ring+0xbc/0x384 [xgene_enet]
[251283.389199] LR is at xgene_enet_process_ring+0xa0/0x384 [xgene_enet]
[251283.395605] pc : [<ffffffbffc003794>] lr : [<ffffffbffc003778>] pstate: 80000145
[251283.403047] sp : ffffffc3f01ebbf0
[251283.406428] x29: ffffffc3f01ebbf0 x28: ffffffc3eb389a18 
[251283.411816] x27: 0000000000000000 x26: 0000000000000000 
[251283.417205] x25: ffffffc3eb326000 x24: ffffffc3eb389c18 
[251283.422594] x23: ffffffc000b82518 x22: 00000000000001ff 
[251283.427981] x21: 0000000000000001 x20: ffffffc3dfbadc80 
[251283.433369] x19: 00000000000000e4 x18: 000000000000000d 
[251283.438757] x17: 0000007f96714650 x16: ffffffc00011e00c 
[251283.444145] x15: 0026996c58fec7d8 x14: 0000000000000000 
[251283.449534] x13: 0000000000000001 x12: ffffffc0ff215c20 
[251283.454922] x11: 0000000000000000 x10: 0000000020a049bb 
[251283.460311] x9 : ffffffc0003dd3c8 x8 : 0000000000000000 
[251283.465700] x7 : 0000000000000000 x6 : 00000040ffc00000 
[251283.471088] x5 : 0000000000000000 x4 : 0000004100000000 
[251283.476477] x3 : 00020000000000be x2 : 00000000000005ea 
[251283.481866] x1 : 00000043dc7f80ee x0 : ffffffc3dfada018 
[251283.487254] 
[251283.488821] Process swapper/2 (pid: 0, stack limit = 0xffffffc3f01e8058)
[251283.495572] Stack: (0xffffffc3f01ebbf0 to 0xffffffc3f01ec000)
[251283.501375] bbe0:                                     f01ebc60 ffffffc3 fc003b88 ffffffbf
[251283.509596] bc00: eb389a90 ffffffc3 fff75dc0 ffffffc3 00000040 00000000 00000040 00000000
[251283.517817] bc20: 017eef06 00000001 fff75dd0 ffffffc3 00aca000 ffffffc0 eb389a90 ffffffc3
[251283.526038] bc40: 00000000 00000000 009d4000 ffffffc0 eb326000 ffffffc3 e8000000 00000040
[251283.534258] bc60: f01ebc90 ffffffc3 00638018 ffffffc0 00000000 00000000 fff75dc0 ffffffc3
[251283.542479] bc80: 0000012c 00000000 f01e8000 ffffffc3 f01ebd10 ffffffc3 000b2e24 ffffffc0
[251283.550699] bca0: 00000003 00000000 00000003 00000000 00000004 00000000 00aca0d8 ffffffc0
[251283.558920] bcc0: 00000008 00000000 f01e8000 ffffffc3 00000100 00000000 00aca000 ffffffc0
[251283.567140] bce0: 00abcb28 ffffffc0 ffffffed 00000000 000b2db8 ffffffc0 009d4d50 ffffffc0
[251283.575361] bd00: 00b66146 ffffffc0 f01e8000 ffffffc3 f01ebd90 ffffffc3 000b3214 ffffffc0
[251283.583582] bd20: f01e8000 ffffffc3 0000005c 00000000 00000000 00000000 00002010 ffffff80
[251283.591802] bd40: 60000145 00000000 00000000 00000000 0007b000 00000040 00abf000 ffffffc0
[251283.600023] bd60: 007430d0 ffffffc0 ffffffed 00000000 017eef05 00000001 00941ac8 ffffffc0
[251283.608243] bd80: 007433b8 ffffffc0 00200040 0000000a f01ebdb0 ffffffc3 000858b4 ffffffc0
[251283.616464] bda0: 00abe000 ffffffc0 00091240 ffffffc0 f01ebdf0 ffffffc3 000812f4 ffffffc0
[251283.624685] bdc0: 0000200c ffffff80 f01ebe20 ffffffc3 00c1a080 ffffffc0 f01ebe20 ffffffc3
[251283.632905] bde0: f01ebf30 00000002 f01ebe20 ffffffc3 f01ebf40 ffffffc3 00084da4 ffffffc0
[251283.641126] be00: f01e8000 ffffffc3 00b83308 ffffffc0 f01ebf40 ffffffc3 00086290 ffffffc0
[251283.649346] be20: 000f2764 ffffffc0 00000000 00000000 00c2afc0 ffffffc0 00ae9260 ffffffc0
[251283.657567] be40: 00ae8000 ffffffc0 017eef04 00000001 25c17d03 00000002 2cbdcc5a 00000000
[251283.665787] be60: 00000018 00000000 f01ebd60 ffffffc3 00000400 00000000 000003ff 00000000
[251283.674008] be80: 00000018 00000000 e8000000 00000003 00000000 00000000 58fec7d8 0026996c
[251283.682228] bea0: 0011e00c ffffffc0 96714650 0000007f 0000000d 00000000 f01e8000 ffffffc3
[251283.690449] bec0: 00b83308 ffffffc0 00b87fa0 ffffffc0 00b67000 ffffffc0 00000000 00000000
[251283.698669] bee0: 00000000 00000000 0007b000 00000040 00abf000 ffffffc0 007430d0 ffffffc0
[251283.706890] bf00: ffffffed 00000000 f01ebf40 ffffffc3 0008628c ffffffc0 f01ebf40 ffffffc3
[251283.715111] bf20: 00086290 ffffffc0 60000145 00000000 f01e8000 ffffffc3 00b83308 ffffffc0
[251283.723331] bf40: f01ebf50 ffffffc3 000f2764 ffffffc0 f01ebfd0 ffffffc3 00090d68 ffffffc0
[251283.731552] bf60: 00000002 00000000 f01e8000 ffffffc3 00b821e0 ffffffc0 500f0000 00000000
[251283.739772] bf80: 00ad3000 00000040 00000000 00000040 0007b000 00000040 0007d000 00000040
[251283.747993] bfa0: 00080340 ffffffc0 00000000 00000080 00948080 ffffffc0 00b65fb4 ffffffc0
[251283.756214] bfc0: 00b821e0 ffffffc0 00abf168 ffffffc0 00000000 00000000 00080328 00000040
[251283.764434] bfe0: 00002000 00000000 00000e12 00000000 ec9fcf5c fbd8df8c ff2ee485 bbfdfde5
[251283.772654] Call trace:
[251283.775176] [<ffffffbffc003794>] xgene_enet_process_ring+0xbc/0x384 [xgene_enet]
[251283.782620] [<ffffffbffc003b84>] xgene_enet_napi+0x28/0x5c [xgene_enet]
[251283.789289] [<ffffffc000638014>] net_rx_action+0x1a4/0x238
[251283.794832] [<ffffffc0000b2e20>] __do_softirq+0x124/0x284
[251283.800288] [<ffffffc0000b3210>] irq_exit+0x94/0xc8
[251283.805227] [<ffffffc0000858b0>] handle_IRQ+0x54/0xd0
[251283.810337] [<ffffffc0000812f0>] gic_handle_irq+0x44/0x88
[251283.815792] Exception stack(0xffffffc3f01ebe00 to 0xffffffc3f01ebf20)
[251283.822285] be00: f01e8000 ffffffc3 00b83308 ffffffc0 f01ebf40 ffffffc3 00086290 ffffffc0
[251283.830506] be20: 000f2764 ffffffc0 00000000 00000000 00c2afc0 ffffffc0 00ae9260 ffffffc0
[251283.838727] be40: 00ae8000 ffffffc0 017eef04 00000001 25c17d03 00000002 2cbdcc5a 00000000
[251283.846948] be60: 00000018 00000000 f01ebd60 ffffffc3 00000400 00000000 000003ff 00000000
[251283.855168] be80: 00000018 00000000 e8000000 00000003 00000000 00000000 58fec7d8 0026996c
[251283.863389] bea0: 0011e00c ffffffc0 96714650 0000007f 0000000d 00000000 f01e8000 ffffffc3
[251283.871609] bec0: 00b83308 ffffffc0 00b87fa0 ffffffc0 00b67000 ffffffc0 00000000 00000000
[251283.879830] bee0: 00000000 00000000 0007b000 00000040 00abf000 ffffffc0 007430d0 ffffffc0
[251283.888051] bf00: ffffffed 00000000 f01ebf40 ffffffc3 0008628c ffffffc0 f01ebf40 ffffffc3
[251283.896272] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[251283.901125] [<ffffffc0000f2760>] cpu_startup_entry+0x258/0x2f0
[251283.907014] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[251283.913334] Code: f1000b5f f863581b 540014e8 79401e82 (f9406f60) 
[251283.919490] ---[ end trace 0fee3fb757f61069 ]---
[251283.924171] Kernel panic - not syncing: Fatal exception in interrupt
[251283.930580] CPU4: stopping
[251283.933362] CPU: 4 PID: 0 Comm: swapper/4 Tainted: G      D       3.16.0-27-generic #36
[251283.941410] Call trace:
[251283.943931] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[251283.949388] [<ffffffc000089b84>] show_stack+0x1c/0x28
[251283.954499] [<ffffffc0007329a8>] dump_stack+0x74/0x94
[251283.959609] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[251283.964893] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[251283.970348] Exception stack(0xffffffc3f01f3e00 to 0xffffffc3f01f3f20)
[251283.976841] 3e00: f01f0000 ffffffc3 00b83308 ffffffc0 f01f3f40 ffffffc3 00086290 ffffffc0
[251283.985063] 3e20: 000f2764 ffffffc0 00000000 00000000 00c2afc0 ffffffc0 00ae9260 ffffffc0
[251283.993283] 3e40: 00ae8000 ffffffc0 017eef2d 00000001 fff8a2b0 ffffffc3 2cbdcc5a 00000000
[251284.001504] 3e60: 00000018 00000000 f01f3d60 ffffffc3 00000400 00000000 00000400 00000000
[251284.009725] 3e80: 00000018 00000000 e8000000 00000003 00000000 00000000 9638a590 0000007f
[251284.017946] 3ea0: 0011e00c ffffffc0 96714650 0000007f c100ac80 0000007f f01f0000 ffffffc3
[251284.026166] 3ec0: 00b83308 ffffffc0 00b87fa0 ffffffc0 00b67000 ffffffc0 00000000 00000000
[251284.034387] 3ee0: 00000000 00000000 0007b000 00000040 00abf000 ffffffc0 007430d0 ffffffc0
[251284.042608] 3f00: ffffffed 00000000 f01f3f40 ffffffc3 0008628c ffffffc0 f01f3f40 ffffffc3
[251284.050828] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[251284.055681] [<ffffffc0000f2760>] cpu_startup_entry+0x258/0x2f0
[251284.061569] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[251284.067889] CPU6: stopping
[251284.070671] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G      D       3.16.0-27-generic #36
[251284.078719] Call trace:
[251284.081240] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[251284.086697] [<ffffffc000089b84>] show_stack+0x1c/0x28
[251284.091807] [<ffffffc0007329a8>] dump_stack+0x74/0x94
[251284.096917] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[251284.102200] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[251284.107656] Exception stack(0xffffffc3f01fbe00 to 0xffffffc3f01fbf20)
[251284.114149] be00: f01f8000 ffffffc3 00b83308 ffffffc0 f01fbf40 ffffffc3 00086290 ffffffc0
[251284.122370] be20: 000f2764 ffffffc0 00000000 00000000 00c2afc0 ffffffc0 00ae9260 ffffffc0
[251284.130591] be40: 00ae8000 ffffffc0 017eef38 00000001 fffa22b0 ffffffc3 2cbdcc5a 00000000
[251284.138812] be60: 00000018 00000000 f01fbd60 ffffffc3 00000400 00000000 00000400 00000000
[251284.147033] be80: 00000018 00000000 e8000000 00000003 00000000 00000000 b54638be 0009aad3
[251284.155253] bea0: 0011e00c ffffffc0 96714650 0000007f c100ac80 0000007f f01f8000 ffffffc3
[251284.163474] bec0: 00b83308 ffffffc0 00b87fa0 ffffffc0 00b67000 ffffffc0 00000000 00000000
[251284.171694] bee0: 00000000 00000000 0007b000 00000040 00abf000 ffffffc0 007430d0 ffffffc0
[251284.179915] bf00: ffffffed 00000000 f01fbf40 ffffffc3 0008628c ffffffc0 f01fbf40 ffffffc3
[251284.188136] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[251284.192988] [<ffffffc0000f2760>] cpu_startup_entry+0x258/0x2f0
[251284.198876] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[251284.205195] CPU7: stopping
[251284.207975] CPU: 7 PID: 0 Comm: swapper/7 Tainted: G      D       3.16.0-27-generic #36
[251284.216023] Call trace:
[251284.218544] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[251284.224001] [<ffffffc000089b84>] show_stack+0x1c/0x28
[251284.229111] [<ffffffc0007329a8>] dump_stack+0x74/0x94
[251284.234220] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[251284.239503] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[251284.244959] Exception stack(0xffffffc3f01ffe00 to 0xffffffc3f01fff20)
[251284.251452] fe00: f01fc000 ffffffc3 00b83308 ffffffc0 f01fff40 ffffffc3 00086290 ffffffc0
[251284.259673] fe20: 000f2764 ffffffc0 00000000 00000000 00c2afc0 ffffffc0 00ae9260 ffffffc0
[251284.267894] fe40: 00ae8000 ffffffc0 017eef2d 00000001 fffae2b0 ffffffc3 2cbdcc5a 00000000
[251284.276115] fe60: 00000018 00000000 f01ffd60 ffffffc3 00000400 00000000 00000400 00000000
[251284.284336] fe80: 5f746365 20716573 73762032 69786520 6e697473 20312067 9638a590 0000007f
[251284.292556] fea0: 0011e00c ffffffc0 967142dc 0000007f 0000000d 00000000 f01fc000 ffffffc3
[251284.300777] fec0: 00b83308 ffffffc0 00b87fa0 ffffffc0 00b67000 ffffffc0 00000000 00000000
[251284.308997] fee0: 00000000 00000000 0007b000 00000040 00abf000 ffffffc0 007430d0 ffffffc0
[251284.317218] ff00: ffffffed 00000000 f01fff40 ffffffc3 0008628c ffffffc0 f01fff40 ffffffc3
[251284.325438] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[251284.330290] [<ffffffc0000f2760>] cpu_startup_entry+0x258/0x2f0
[251284.336178] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[251284.342498] CPU5: stopping
[251284.345278] CPU: 5 PID: 0 Comm: swapper/5 Tainted: G      D       3.16.0-27-generic #36
[251284.353326] Call trace:
[251284.355846] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[251284.361303] [<ffffffc000089b84>] show_stack+0x1c/0x28
[251284.366413] [<ffffffc0007329a8>] dump_stack+0x74/0x94
[251284.371523] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[251284.376806] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[251284.382261] Exception stack(0xffffffc3f01f7e00 to 0xffffffc3f01f7f20)
[251284.388755] 7e00: f01f4000 ffffffc3 00b83308 ffffffc0 f01f7f40 ffffffc3 00086290 ffffffc0
[251284.396976] 7e20: 000f2764 ffffffc0 00000000 00000000 00c2afc0 ffffffc0 00ae9260 ffffffc0
[251284.405197] 7e40: 00ae8000 ffffffc0 017eef08 00000001 25c17d03 00000002 2cbdcc5a 00000000
[251284.413418] 7e60: 00000018 00000000 f01f7d60 ffffffc3 00000400 00000000 00000400 00000000
[251284.421638] 7e80: ffffff80 00000000 ec7dc398 ffffffbc 00000000 00000000 9638a590 0000007f
[251284.429859] 7ea0: 001f21f4 ffffffc0 967188b0 0000007f 0000000d 00000000 f01f4000 ffffffc3
[251284.438080] 7ec0: 00b83308 ffffffc0 00b87fa0 ffffffc0 00b67000 ffffffc0 00000000 00000000
[251284.446300] 7ee0: 00000000 00000000 0007b000 00000040 00abf000 ffffffc0 007430d0 ffffffc0
[251284.454521] 7f00: ffffffed 00000000 f01f7f40 ffffffc3 0008628c ffffffc0 f01f7f40 ffffffc3
[251284.462741] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[251284.467593] [<ffffffc0000f2760>] cpu_startup_entry+0x258/0x2f0
[251284.473481] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[251284.479802] CPU1: stopping
[251284.482584] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G      D       3.16.0-27-generic #36
[251284.490632] Call trace:
[251284.493154] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[251284.498611] [<ffffffc000089b84>] show_stack+0x1c/0x28
[251284.503721] [<ffffffc0007329a8>] dump_stack+0x74/0x94
[251284.508832] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[251284.514115] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[251284.519570] Exception stack(0xffffffc3f01dfe00 to 0xffffffc3f01dff20)
[251284.526063] fe00: f01dc000 ffffffc3 00b83308 ffffffc0 f01dff40 ffffffc3 00086290 ffffffc0
[251284.534285] fe20: 000f2764 ffffffc0 00000000 00000000 00c2afc0 ffffffc0 00ae9260 ffffffc0
[251284.542505] fe40: 00ae8000 ffffffc0 017eef23 00000001 d1557918 ffffffc3 fff662b0 ffffffc3
[251284.550726] fe60: 00000018 00000000 f01dfd60 ffffffc3 00000400 00000000 00000400 00000000
[251284.558947] fe80: 00000018 00000000 ab793493 ffffffff 5a000000 002cbdcc 00000000 003b9aca
[251284.567168] fea0: 00206238 ffffffc0 8c1aa664 0000007f e9c21190 0000007f f01dc000 ffffffc3
[251284.575388] fec0: 00b83308 ffffffc0 00b87fa0 ffffffc0 00b67000 ffffffc0 00000000 00000000
[251284.583609] fee0: 00000000 00000000 0007b000 00000040 00abf000 ffffffc0 007430d0 ffffffc0
[251284.591829] ff00: ffffffed 00000000 f01dff40 ffffffc3 0008628c ffffffc0 f01dff40 ffffffc3
[251284.600050] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[251284.604902] [<ffffffc0000f2760>] cpu_startup_entry+0x258/0x2f0
[251284.610790] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[251284.617110] CPU3: stopping
[251284.619889] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G      D       3.16.0-27-generic #36
[251284.627937] Call trace:
[251284.630458] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[251284.635915] [<ffffffc000089b84>] show_stack+0x1c/0x28
[251284.641025] [<ffffffc0007329a8>] dump_stack+0x74/0x94
[251284.646135] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[251284.651418] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[251284.656874] Exception stack(0xffffffc3f01efe00 to 0xffffffc3f01eff20)
[251284.663367] fe00: f01ec000 ffffffc3 00b83308 ffffffc0 f01eff40 ffffffc3 00086290 ffffffc0
[251284.671588] fe20: 000f2764 ffffffc0 00000000 00000000 00c2afc0 ffffffc0 00ae9260 ffffffc0
[251284.679809] fe40: 00ae8000 ffffffc0 017eef38 00000001 d149f7f8 ffffffc3 2cbdcc5a 00000000
[251284.688030] fe60: 00000018 00000000 f01efd60 ffffffc3 00000400 00000000 000003ff 00000000
[251284.696250] fe80: 00000018 00000000 e8000000 00000003 00000000 00000000 c513abbe 0009ad6f
[251284.704471] fea0: 0011e00c ffffffc0 96714650 0000007f c100ac80 0000007f f01ec000 ffffffc3
[251284.712692] fec0: 00b83308 ffffffc0 00b87fa0 ffffffc0 00b67000 ffffffc0 00000000 00000000
[251284.720912] fee0: 00000000 00000000 0007b000 00000040 00abf000 ffffffc0 007430d0 ffffffc0
[251284.729133] ff00: ffffffed 00000000 f01eff40 ffffffc3 0008628c ffffffc0 f01eff40 ffffffc3
[251284.737353] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[251284.742205] [<ffffffc0000f2760>] cpu_startup_entry+0x258/0x2f0
[251284.748093] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[251284.754413] CPU0: stopping
[251284.757193] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G      D       3.16.0-27-generic #36
[251284.765240] Call trace:
[251284.767761] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[251284.773218] [<ffffffc000089b84>] show_stack+0x1c/0x28
[251284.778328] [<ffffffc0007329a8>] dump_stack+0x74/0x94
[251284.783438] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[251284.788721] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[251284.794176] Exception stack(0xffffffc000ac7dc0 to 0xffffffc000ac7ee0)
[251284.800669] 7dc0: 00ac4000 ffffffc0 00b83308 ffffffc0 00ac7f00 ffffffc0 00086290 ffffffc0
[251284.808891] 7de0: 000f2764 ffffffc0 00000000 00000000 00c2afc0 ffffffc0 00ae9260 ffffffc0
[251284.817111] 7e00: 00ae8000 ffffffc0 017eeef7 00000001 ea477cf8 ffffffc3 00b8ec90 ffffffc0
[251284.825332] 7e20: 00000018 00000000 00ac7d20 ffffffc0 00000400 00000000 00000400 00000000
[251284.833553] 7e40: ffffff80 00000000 e3031040 ffffffbc 00000000 00000000 9638a590 0000007f
[251284.841774] 7e60: 001f21f4 ffffffc0 967188b0 0000007f 0000000d 00000000 00ac4000 ffffffc0
[251284.849994] 7e80: 00b83308 ffffffc0 00b87fa0 ffffffc0 00b67000 ffffffc0 00000000 00000000
[251284.858215] 7ea0: 00000000 00000000 0007b000 00000040 00abf000 ffffffc0 007430d0 ffffffc0
[251284.866435] 7ec0: ffffffed 00000000 00ac7f00 ffffffc0 0008628c ffffffc0 00ac7f00 ffffffc0
[251284.874656] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[251284.879508] [<ffffffc0000f2760>] cpu_startup_entry+0x258/0x2f0
[251284.885395] [<ffffffc00072e0bc>] rest_init+0x74/0x80
[251284.890421] [<ffffffc000a36950>] start_kernel+0x384/0x39c
[251284.895878] ---[ end Kernel panic - not syncing: Fatal exception in interrupt

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https://bugs.launchpad.net/bugs/1396979

Title:
  APM Mustang board kernel crashes when running Ceph

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Hi,
  We've been running Ceph on 4 APM Mustang boards within Linaro, running stock Ubuntu Utopic (problem occurs with Trusty too).

  Essentially when I place the network under heavy load (by writing data
  to a Ceph filesystem backed by 3xOSDs), I experience kernel crashes.
  I've harvested a few backtraces from the serial port and will paste
  them below as separate comments.

  I think the problem lies in the xgene driver, but I don't know enough
  to resolve where this problem is happening.

  Cheers,
  --
  Steve
  --- 
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: arm64
  ArecordDevices: Error: [Errno 2] No such file or directory
  CRDA: Error: [Errno 2] No such file or directory
  CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
  DistroRelease: Ubuntu 14.10
  IwConfig: Error: [Errno 2] No such file or directory
  Lspci:
   
  Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
  Package: linux (not installed)
  PciMultimedia:
   
  ProcFB:
   
  ProcKernelCmdLine: console=ttyS0,115200n8 ro
  ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  utopic utopic
  Uname: Linux 3.16.0-25-generic aarch64
  UnreportableReason: The report belongs to a package that is not installed.
  UpgradeStatus: Upgraded to utopic on 2014-11-17 (10 days ago)
  UserGroups: sudo
  WifiSyslog:
   
  _MarkForUpload: True

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