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[Steve Capper <steve.capper@xxxxxxxxxx>]

385.828557] Unable to handle kernel NULL pointer dereference at virtual address 000000d8
[  385.836623] pgd = ffffffc0ff821000
[  385.840006] [000000d8] *pgd=0000000000000000
[  385.844271] Internal error: Oops: 96000005 [#1] SMP
[  385.849123] Modules linked in: xfs libcrc32c xgene_rng uio_pdrv_genirq uio btrfs xor raid6_pq realtek ahci_xgene libahci_platform libahci xgene_enet
[  385.862506] CPU: 6 PID: 1534 Comm: ceph-osd Not tainted 3.16.0-24-generic #32-Ubuntu
[  385.870208] task: ffffffc3e955b100 ti: ffffffc0ff3c8000 task.ti: ffffffc0ff3c8000
[  385.877656] PC is at xgene_enet_process_ring+0xc0/0x38c [xgene_enet]
[  385.883976] LR is at xgene_enet_process_ring+0xa4/0x38c [xgene_enet]
[  385.890295] pc : [<ffffffbffc002558>] lr : [<ffffffbffc00253c>] pstate: 80000145
[  385.897652] sp : ffffffc0ff3cb460
[  385.900946] x29: ffffffc0ff3cb460 x28: ffffffc3eb2cf418 
[  385.906248] x27: 0000000000000000 x26: 0000000000000000 
[  385.911551] x25: ffffffc3eb2cf618 x24: ffffffc000b7e518 
[  385.916853] x23: ffffffc3eb2eb000 x22: 0000000000000001 
[  385.922154] x21: 000000000000003f x20: ffffffc3df4b9940 
[  385.927457] x19: 00000000000000ca x18: 000000558ea41000 
[  385.932760] x17: 0000007f79635664 x16: ffffffc000205ddc 
[  385.938063] x15: 0000007f796bb590 x14: 0000000000000000 
[  385.943365] x13: 0000000000000010 x12: 0000000000000003 
[  385.948666] x11: 00000000ffffffc0 x10: ffffffc3ea783800 
[  385.953969] x9 : ffffffc0003dc1a4 x8 : 0000000021f52420 
[  385.959271] x7 : 0000100800000000 x6 : 00000040ffc00000 
[  385.964572] x5 : ffffffc3eb37a9f0 x4 : 0000004100000000 
[  385.969873] x3 : 0002000000000185 x2 : 0000000000000042 
[  385.975176] x1 : 00000043ea4840ee x0 : ffffffc3eb2f3018 
[  385.980479] 
[  385.981960] Process ceph-osd (pid: 1534, stack limit = 0xffffffc0ff3c8058)
[  385.988798] Stack: (0xffffffc0ff3cb460 to 0xffffffc0ff3cc000)
[  385.994515] b460: ff3cb4d0 ffffffc0 fc002930 ffffffbf eb2cf490 ffffffc3 fffa6d80 ffffffc3
[  386.002650] b480: 00000040 00000000 00000040 00000000 00002185 00000001 fffa6d90 ffffffc3
[  386.010784] b4a0: 00ac6000 ffffffc0 eb2cf490 ffffffc3 00000000 00000000 009d3000 ffffffc0
[  386.018918] b4c0: eb2eb000 ffffffc3 00000010 000001ff ff3cb500 ffffffc0 00636e6c ffffffc0
[  386.027052] b4e0: 00000000 00000000 fffa6d80 ffffffc3 0000012c 00000000 ff3c8000 ffffffc0
[  386.035187] b500: ff3cb580 ffffffc0 000b2dbc ffffffc0 00000003 00000000 00000003 00000000
[  386.043321] b520: 00000004 00000000 00ac60d8 ffffffc0 00000008 00000000 ff3c8000 ffffffc0
[  386.051455] b540: 00000100 00000000 00ac6000 ffffffc0 00abbb28 ffffffc0 ff3cbae4 ffffffc0
[  386.059589] b560: 000b2d50 ffffffc0 009d3bc8 ffffffc0 00b6210b ffffffc0 ff3c8000 ffffffc0
[  386.067723] b580: ff3cb600 ffffffc0 000b31ac ffffffc0 ff3c8000 ffffffc0 0000005c 00000000
[  386.075858] b5a0: 00000000 00000000 00002010 ffffff80 20000145 00000000 00000020 00000000
[  386.083992] b5c0: df6e2c01 ffffffc3 ff3cb918 ffffffc0 df6e2c00 ffffffc3 ff3cbae4 ffffffc0
[  386.092126] b5e0: 00002184 00000001 00940aa8 ffffffc0 007423b8 ffffffc0 00400040 0000000a
[  386.100260] b600: ff3cb620 ffffffc0 000858b4 ffffffc0 00abd000 ffffffc0 000e6f6c ffffffc0
[  386.108395] b620: ff3cb660 ffffffc0 000812f4 ffffffc0 0000200c ffffff80 ff3cb690 ffffffc0
[  386.116529] b640: 00c16040 ffffffc0 ff3cb690 ffffffc0 e8279e00 ffffffc3 ff3cb690 ffffffc0
[  386.124663] b660: ff3cb7b0 ffffffc0 00084da4 ffffffc0 fffa2968 ffffffc3 ff3cb948 ffffffc0
[  386.132799] b680: ff3cb7b0 ffffffc0 0073740c ffffffc0 00000140 00000000 ff3cb888 ffffffc0
[  386.140933] b6a0: 05f5e100 00000000 00000000 00000000 00000001 00000000 00002019 00000000
[  386.149067] b6c0: 3b9ac9ff 00000000 00619990 ffffffc0 64110b2e 0008fd47 0000a7bc 00000000
[  386.157201] b6e0: 00000000 00000000 00018380 00000000 00000003 00000000 00000010 00000000
[  386.165335] b700: 00000000 00000000 796bb590 0000007f 00205ddc ffffffc0 79635664 0000007f
[  386.173469] b720: 8ea41000 00000055 fffa2968 ffffffc3 ff3cb948 ffffffc0 ff3cb888 ffffffc0
[  386.181603] b740: 5ecf70c1 0000012b 05f5e100 00000000 00000020 00000000 df6e2c01 ffffffc3
[  386.189737] b760: ff3cb918 ffffffc0 df6e2c00 ffffffc3 ff3cbae4 ffffffc0 ff3cb7b0 ffffffc0
[  386.197872] b780: 000d4bc0 ffffffc0 ff3cb7b0 ffffffc0 0073740c ffffffc0 20000145 00000000
[  386.206006] b7a0: ff3cb7d0 ffffffc0 000d4728 ffffffc0 ff3cb7d0 ffffffc0 000d4bc0 ffffffc0
[  386.214140] b7c0: fffa29a8 ffffffc3 000d4e20 ffffffc0 ff3cb800 ffffffc0 000d4da0 ffffffc0
[  386.222274] b7e0: 5ecf70c1 0000012b 00000000 00000000 00abb000 ffffffc0 00000140 00000000
[  386.230409] b800: ff3cb890 ffffffc0 000d50f8 ffffffc0 ff3cb918 ffffffc0 00000000 00000000
[  386.238543] b820: 05f5e100 00000000 ff3cbac8 ffffffc0 00000000 00000000 00000020 00000000
[  386.246677] b840: df6e2c01 ffffffc3 00000000 00000000 df6e2c00 ffffffc3 ff3cbae4 ffffffc0
[  386.254811] b860: ff3cb890 ffffffc0 000d4c78 00000001 00000001 00000000 000d50f8 ffffffc0
[  386.262945] b880: 00000000 00000000 00000140 00000000 ff3cb8d0 ffffffc0 00733888 ffffffc0
[  386.271079] b8a0: ff3c8000 ffffffc0 0073385c ffffffc0 ff3c8000 ffffffc0 5ecf70c1 0000012b
[  386.279213] b8c0: 05f5e100 00000000 05f5e100 00000000 ff3cb980 ffffffc0 00733920 ffffffc0
[  386.287347] b8e0: ff3cbac8 ffffffc0 ff3cbbd0 ffffffc0 ff3c8000 ffffffc0 ff3cbac8 ffffffc0
[  386.295481] b900: 64110b2e 0008fd47 0000a7bc 00000001 00000000 00000000 ff3cb918 ffffffc0
[  386.303615] b920: 00000000 00000000 00000000 00000000 64c551c1 0000012b 5ecf70c1 0000012b
[  386.311749] b940: 000d4ab4 ffffffc0 fffa29a8 ffffffc3 00000000 00000000 ffffffff 00000000
[  386.319883] b960: 00000000 00000000 00000000 00000000 00000000 00000000 e955b100 ffffffc3
[  386.328017] b980: ff3cb9b0 ffffffc0 0073399c ffffffc0 ff3cbac8 ffffffc0 df6e2c00 ffffffc3
[  386.336151] b9a0: 05f5e100 00000000 00000000 00000001 ff3cb9e0 ffffffc0 00204728 ffffffc0
[  386.344285] b9c0: 00000001 00000000 eb53b700 ffffffc3 05f5e100 00000000 ff3cbbd0 00000000
[  386.352419] b9e0: ff3cba20 ffffffc0 00205b50 ffffffc0 ff3cbae4 ffffffc0 00000000 00000000
[  386.360553] ba00: 00000000 00000000 00000000 00000000 ff3cbae4 ffffffc0 05f5e100 00000000
[  386.368687] ba20: ff3cbe40 ffffffc0 00205f8c ffffffc0 44efe1a0 0000007f 00000000 00000000
[  386.376823] ba40: ffffffff ffffffff 44efe1c8 0000007f 00000001 00000000 ff3cbec0 ffffffc0
[  386.384957] ba60: 00000000 00000000 00000049 00000000 00ad0000 ffffffc0 ff3c8000 ffffffc0
[  386.393091] ba80: 00c27f7c ffffffc0 ff3cbec0 ffffffc0 00000000 00000000 05f5e100 00000000
[  386.401225] baa0: ff3cbac8 ffffffc0 00000001 00000000 ff3c8000 ffffffc0 44efe1c8 0000007f
[  386.409359] bac0: ff3cbae0 ffffffc0 5ecf70c1 0000012b 00000000 00000000 00000001 0000001b
[  386.417493] bae0: 00002001 ffffffc0 0019191c ffffffc0 ed41a900 ffffffbc 8020001a ffffffc3
[  386.425627] bb00: c99e1600 ffffffc3 00000001 00000000 ff3cbb30 ffffffc0 00622c88 ffffffc0
[  386.433762] bb20: ff3cbb50 ffffffc0 007378bc ffffffc0 0061f73c ffffffc0 ea783870 ffffffc3
[  386.441896] bb40: ea783878 ffffffc3 00622b9c ffffffc0 ff3cbb70 ffffffc0 0061f73c ffffffc0
[  386.450030] bb60: 00000b50 00000000 00090c91 00000000 ff3cbbc0 ffffffc0 006832fc ffffffc0
[  386.458164] bb80: 00000b50 00000000 00090c91 00000000 00000000 00000000 00000001 00000000
[  386.466298] bba0: 009d6df8 ffffffc0 ea783890 ffffffc3 00000000 00000000 00090c91 00000000
[  386.474432] bbc0: ff3cbc60 ffffffc0 006ab3e4 ffffffc0 00000000 00000000 00002019 00000000
[  386.482566] bbe0: 00000000 00000000 e955b100 ffffffc3 00000001 00000000 00000001 00000000
[  386.490700] bc00: df6e2c00 ffffffc3 00002019 00000000 00000000 ffffffc0 ff3cbbd0 ffffffc0
[  386.498834] bc20: 002048a4 ffffffc0 eb37aa08 ffffffc3 ffb57a80 ffffffc0 eb37aa00 ffffffc3
[  386.506968] bc40: 009d6e58 ffffffc0 00000b50 00000000 ff3cbc80 ffffffc0 00000000 00000000
[  386.515103] bc60: ff3cbcb0 ffffffc0 00619e38 ffffffc0 eb53b700 ffffffc3 00000040 00000000
[  386.523237] bc80: ff3cbcb0 ffffffc0 eb53b700 ffffffc3 000917e1 00000000 00000003 00000040
[  386.531372] bca0: ff3cbe18 ffffffc0 000917e1 00000000 ff3cbdb0 ffffffc0 0061c42c ffffffc0
[  386.539507] bcc0: 000917e1 00000000 eb53b700 ffffffc3 00000040 00000000 00000000 00000000
[  386.547642] bce0: 00000000 00000000 00000000 00000000 00000000 00000000 ff3cbd38 ffffffc0
[  386.555776] bd00: e955b100 ffffffc3 00000000 00000000 00000000 00000000 00000000 00000000
[  386.563910] bd20: 00000000 00000000 00000000 00000000 00000000 00000000 0020f0bc ffffffc0
[  386.572044] bd40: 0000001b 00000000 00000040 000917e1 eb53b700 ffffffc3 ff3cbdb0 00004000
[  386.580178] bd60: 00000000 00000000 ff3cbe18 ffffffc0 0000001b 00000000 ff3cbdb0 ffffffc0
[  386.588312] bd80: ff3cbdb0 ffffffc0 0061c3c8 ffffffc0 ff3cbdb0 ffffffc0 0061c460 ffffffc0
[  386.596446] bda0: 000917e1 00000000 ff3cbe04 ffffffc0 44efe020 0000007f 0008521c ffffffc0
[  386.604580] bdc0: ff3cbdd0 ffffffc0 0010f4e0 ffffffc0 ff3cbe10 ffffffc0 00204b7c ffffffc0
[  386.612715] bde0: ff3cbec0 ffffffc0 00000384 00000000 00000000 00000000 2ed77ec1 00000000
[  386.620850] be00: 00000384 00000000 00000000 00000000 ff3cbe40 ffffffc0 00205e60 ffffffc0
[  386.628984] be20: 44efe1a0 0000007f 00000000 00000000 ffffffff ffffffff 00000000 00000000
[  386.637118] be40: 44efe170 0000007f 0008521c ffffffc0 00000000 00000000 00000000 00000000
[  386.645252] be60: ffffffff ffffffff 7963573c 0000007f 80000000 00000000 00000015 00000000
[  386.653386] be80: 00000116 00000000 00ad0000 ffffffc0 ff3c8000 ffffffc0 44efe170 0000007f
[  386.661521] bea0: 7963571c 0000007f ff3cbed0 ffffffc0 00000384 00000000 00000000 00000000
[  386.669654] bec0: 00000505 00000000 2ed77ec1 00000000 44efe1c8 0000007f 00000001 00000000
[  386.677789] bee0: 44efe1a0 0000007f 00000000 00000000 00000000 00000000 44eff870 0000007f
[  386.685923] bf00: ffffffbb 00000000 00000000 00000000 00000049 00000000 0000a7bc 00000000
[  386.694057] bf20: 00000000 00000000 00018380 00000000 00000003 00000000 00000010 00000000
[  386.702191] bf40: 00000000 00000000 796bb590 0000007f 8ea3eb58 00000055 79635664 0000007f
[  386.710325] bf60: 8ea41000 00000055 44efe1c8 0000007f 00000000 00000000 44efe538 0000007f
[  386.718459] bf80: 44efe348 0000007f 480084c0 0000007f 44efe448 0000007f 00000b50 00000000
[  386.726593] bfa0: 44efe3f8 0000007f 44efe4e8 0000007f 00090ef8 00000000 44efe170 0000007f
[  386.734728] bfc0: 7963571c 0000007f 44efe170 0000007f 7963573c 0000007f 80000000 00000000
[  386.742862] bfe0: 44efe1c8 0000007f 00000049 00000000 5ba2daa7 cf7ae638 cae9f3a3 5ebee768
[  386.750995] Call trace:
[  386.753429] [<ffffffbffc002558>] xgene_enet_process_ring+0xc0/0x38c [xgene_enet]
[  386.760786] [<ffffffbffc00292c>] xgene_enet_napi+0x28/0x5c [xgene_enet]
[  386.767368] [<ffffffc000636e68>] net_rx_action+0x1a4/0x238
[  386.772826] [<ffffffc0000b2db8>] __do_softirq+0x124/0x284
[  386.778195] [<ffffffc0000b31a8>] irq_exit+0x94/0xc8
[  386.783048] [<ffffffc0000858b0>] handle_IRQ+0x54/0xd0
[  386.788072] [<ffffffc0000812f0>] gic_handle_irq+0x44/0x88
[  386.793441] Exception stack(0xffffffc0ff3cb670 to 0xffffffc0ff3cb790)
[  386.799848] b660:                                     fffa2968 ffffffc3 ff3cb948 ffffffc0
[  386.807982] b680: ff3cb7b0 ffffffc0 0073740c ffffffc0 00000140 00000000 ff3cb888 ffffffc0
[  386.816117] b6a0: 05f5e100 00000000 00000000 00000000 00000001 00000000 00002019 00000000
[  386.824251] b6c0: 3b9ac9ff 00000000 00619990 ffffffc0 64110b2e 0008fd47 0000a7bc 00000000
[  386.832385] b6e0: 00000000 00000000 00018380 00000000 00000003 00000000 00000010 00000000
[  386.840519] b700: 00000000 00000000 796bb590 0000007f 00205ddc ffffffc0 79635664 0000007f
[  386.848653] b720: 8ea41000 00000055 fffa2968 ffffffc3 ff3cb948 ffffffc0 ff3cb888 ffffffc0
[  386.856787] b740: 5ecf70c1 0000012b 05f5e100 00000000 00000020 00000000 df6e2c01 ffffffc3
[  386.864921] b760: ff3cb918 ffffffc0 df6e2c00 ffffffc3 ff3cbae4 ffffffc0 ff3cb7b0 ffffffc0
[  386.873055] b780: 000d4bc0 ffffffc0 ff3cb7b0 ffffffc0
[  386.878079] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[  386.882845] [<ffffffc0000d4bbc>] lock_hrtimer_base.isra.21+0x2c/0x64
[  386.889165] [<ffffffc0000d4d9c>] __hrtimer_start_range_ns+0x4c/0x36c
[  386.895484] [<ffffffc0000d50f4>] hrtimer_start_range_ns+0x38/0x48
[  386.901547] [<ffffffc000733884>] schedule_hrtimeout_range_clock.part.24+0x7c/0xd4
[  386.908991] [<ffffffc00073391c>] schedule_hrtimeout_range_clock+0x40/0x8c
[  386.915742] [<ffffffc000733998>] schedule_hrtimeout_range+0x30/0x40
[  386.921977] [<ffffffc000204724>] poll_schedule_timeout+0x54/0x80
[  386.927951] [<ffffffc000205b4c>] do_sys_poll+0x390/0x49c
[  386.933234] [<ffffffc000205f88>] SyS_ppoll+0x1ac/0x1ec
[  386.938349] Code: f1000b5f f863581b 54001508 79401e82 (f9406f60) 
[  386.944425] ---[ end trace c561cab06bfee4d0 ]---
[  386.949018] Kernel panic - not syncing: Fatal exception in interrupt
[  386.955340] CPU1: stopping
[  386.958037] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G      D       3.16.0-24-generic #32-Ubuntu
[  386.966603] Call trace:
[  386.969038] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[  386.974409] [<ffffffc000089b84>] show_stack+0x1c/0x28
[  386.979433] [<ffffffc0007316e8>] dump_stack+0x74/0x94
[  386.984457] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[  386.989654] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[  386.995023] Exception stack(0xffffffc3f01dfe00 to 0xffffffc3f01dff20)
[  387.001430] fe00: f01dc000 ffffffc3 00b7f308 ffffffc0 f01dff40 ffffffc3 00086290 ffffffc0
[  387.009565] fe20: 000f26f4 ffffffc0 00000000 00000000 00c26f80 ffffffc0 00ae5260 ffffffc0
[  387.017699] fe40: 00ae4000 ffffffc0 000021f4 00000001 25c17d03 00000002 254cfd30 00000000
[  387.025834] fe60: 00000018 00000000 f01dfd60 ffffffc3 00000400 00000000 00000400 00000000
[  387.033968] fe80: 00000000 00010000 00000000 00000000 00000000 00000000 00000000 00000000
[  387.042102] fea0: 00000000 00000000 007ffe01 00000000 00000000 00000000 f01dc000 ffffffc3
[  387.050236] fec0: 00b7f308 ffffffc0 00b83fa0 ffffffc0 00b63000 ffffffc0 00000000 00000000
[  387.058370] fee0: 00000000 00000000 0007b000 00000040 00abe000 ffffffc0 007420d0 ffffffc0
[  387.066504] ff00: ffffffed 00000000 f01dff40 ffffffc3 0008628c ffffffc0 f01dff40 ffffffc3
[  387.074639] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[  387.079406] [<ffffffc0000f26f0>] cpu_startup_entry+0x258/0x2f0
[  387.085208] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[  387.091442] CPU3: stopping
[  387.094138] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G      D       3.16.0-24-generic #32-Ubuntu
[  387.102704] Call trace:
[  387.105140] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[  387.110511] [<ffffffc000089b84>] show_stack+0x1c/0x28
[  387.115535] [<ffffffc0007316e8>] dump_stack+0x74/0x94
[  387.120559] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[  387.125756] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[  387.131125] Exception stack(0xffffffc3f01efe00 to 0xffffffc3f01eff20)
[  387.137532] fe00: f01ec000 ffffffc3 00b7f308 ffffffc0 f01eff40 ffffffc3 00086290 ffffffc0
[  387.145667] fe20: 000f26f4 ffffffc0 00000000 00000000 00c26f80 ffffffc0 00ae5260 ffffffc0
[  387.153801] fe40: 00ae4000 ffffffc0 000021f4 00000001 25c17d03 00000002 254cfd30 00000000
[  387.161936] fe60: 00000018 00000000 f01efd60 ffffffc3 00000400 00000000 000003ff 00000000
[  387.170070] fe80: 33343431 73692029 6165725f 6c626164 6f6e2065 30323d77 aabef590 0000007f
[  387.178205] fea0: 0011de94 ffffffc0 aaf782dc 0000007f 0000000d 00000000 f01ec000 ffffffc3
[  387.186339] fec0: 00b7f308 ffffffc0 00b83fa0 ffffffc0 00b63000 ffffffc0 00000000 00000000
[  387.194473] fee0: 00000000 00000000 0007b000 00000040 00abe000 ffffffc0 007420d0 ffffffc0
[  387.202607] ff00: ffffffed 00000000 f01eff40 ffffffc3 0008628c ffffffc0 f01eff40 ffffffc3
[  387.210741] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[  387.215507] [<ffffffc0000f26f0>] cpu_startup_entry+0x258/0x2f0
[  387.221309] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[  387.227542] CPU2: stopping
[  387.230235] CPU: 2 PID: 0 Comm: swapper/2 Tainted: G      D       3.16.0-24-generic #32-Ubuntu
[  387.238801] Call trace:
[  387.241235] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[  387.246605] [<ffffffc000089b84>] show_stack+0x1c/0x28
[  387.251629] [<ffffffc0007316e8>] dump_stack+0x74/0x94
[  387.256653] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[  387.261849] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[  387.267218] Exception stack(0xffffffc3f01ebe00 to 0xffffffc3f01ebf20)
[  387.273625] be00: f01e8000 ffffffc3 00b7f308 ffffffc0 f01ebf40 ffffffc3 00086290 ffffffc0
[  387.281760] be20: 000f26f4 ffffffc0 00000000 00000000 00c26f80 ffffffc0 00ae5260 ffffffc0
[  387.289895] be40: 00ae4000 ffffffc0 000021f3 00000001 00000001 00000000 254cfd30 00000000
[  387.298029] be60: 00000018 00000000 f01ebd60 ffffffc3 00000400 00000000 000003ff 00000000
[  387.306163] be80: 00000018 00000000 e8000000 00000003 00000000 00000000 81feb00f 0010e4a0
[  387.314298] bea0: 0011de94 ffffffc0 9ca3b2dc 0000007f 00000050 00000000 f01e8000 ffffffc3
[  387.322432] bec0: 00b7f308 ffffffc0 00b83fa0 ffffffc0 00b63000 ffffffc0 00000000 00000000
[  387.330566] bee0: 00000000 00000000 0007b000 00000040 00abe000 ffffffc0 007420d0 ffffffc0
[  387.338700] bf00: ffffffed 00000000 f01ebf40 ffffffc3 0008628c ffffffc0 f01ebf40 ffffffc3
[  387.346834] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[  387.351600] [<ffffffc0000f26f0>] cpu_startup_entry+0x258/0x2f0
[  387.357401] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[  387.363636] CPU4: stopping
[  387.366332] CPU: 4 PID: 0 Comm: swapper/4 Tainted: G      D       3.16.0-24-generic #32-Ubuntu
[  387.374898] Call trace:
[  387.377334] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[  387.382705] [<ffffffc000089b84>] show_stack+0x1c/0x28
[  387.387729] [<ffffffc0007316e8>] dump_stack+0x74/0x94
[  387.392752] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[  387.397949] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[  387.403319] Exception stack(0xffffffc3f01f3e00 to 0xffffffc3f01f3f20)
[  387.409726] 3e00: f01f0000 ffffffc3 00b7f308 ffffffc0 f01f3f40 ffffffc3 00086290 ffffffc0
[  387.417861] 3e20: 000f26f4 ffffffc0 00000000 00000000 00c26f80 ffffffc0 00ae5260 ffffffc0
[  387.425995] 3e40: 00ae4000 ffffffc0 000021f3 00000001 fff8b2b0 ffffffc3 254cfd30 00000000
[  387.434130] 3e60: 00000018 00000000 f01f3d60 ffffffc3 00000400 00000000 00000400 00000000
[  387.442264] 3e80: 00000018 00000000 e8000000 00000003 00000000 00000000 6759552f 0010b908
[  387.450399] 3ea0: 00205568 ffffffc0 95441150 0000007f e1febaf0 0000007f f01f0000 ffffffc3
[  387.458533] 3ec0: 00b7f308 ffffffc0 00b83fa0 ffffffc0 00b63000 ffffffc0 00000000 00000000
[  387.466667] 3ee0: 00000000 00000000 0007b000 00000040 00abe000 ffffffc0 007420d0 ffffffc0
[  387.474801] 3f00: ffffffed 00000000 f01f3f40 ffffffc3 0008628c ffffffc0 f01f3f40 ffffffc3
[  387.482936] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[  387.487700] [<ffffffc0000f26f0>] cpu_startup_entry+0x258/0x2f0
[  387.493502] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[  387.499735] CPU0: stopping
[  387.502430] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G      D       3.16.0-24-generic #32-Ubuntu
[  387.510996] Call trace:
[  387.513429] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[  387.518800] [<ffffffc000089b84>] show_stack+0x1c/0x28
[  387.523823] [<ffffffc0007316e8>] dump_stack+0x74/0x94
[  387.528847] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[  387.534044] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[  387.539413] Exception stack(0xffffffc000ac3dc0 to 0xffffffc000ac3ee0)
[  387.545820] 3dc0: 00ac0000 ffffffc0 00b7f308 ffffffc0 00ac3f00 ffffffc0 00086290 ffffffc0
[  387.553955] 3de0: 000f26f4 ffffffc0 00000000 00000000 00c26f80 ffffffc0 00ae5260 ffffffc0
[  387.562090] 3e00: 00ae4000 ffffffc0 000021f2 00000001 25c17d03 00000002 254cfd30 00000000
[  387.570224] 3e20: 00000018 00000000 00ac3d20 ffffffc0 00000400 00000000 000003ff 00000000
[  387.578359] 3e40: 4d3bf275 00000000 6a77a62d 00000000 9d00e209 00000000 c8dfdc8b 00000000
[  387.586493] 3e60: 71286893 00000000 105dcaf2 00000000 83761c09 00000000 00ac0000 ffffffc0
[  387.594627] 3e80: 00b7f308 ffffffc0 00b83fa0 ffffffc0 00b63000 ffffffc0 00000000 00000000
[  387.602762] 3ea0: 00000000 00000000 0007b000 00000040 00abe000 ffffffc0 007420d0 ffffffc0
[  387.610896] 3ec0: ffffffed 00000000 00ac3f00 ffffffc0 0008628c ffffffc0 00ac3f00 ffffffc0
[  387.619030] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[  387.623796] [<ffffffc0000f26f0>] cpu_startup_entry+0x258/0x2f0
[  387.629597] [<ffffffc00072cdfc>] rest_init+0x74/0x80
[  387.634536] [<ffffffc000a35950>] start_kernel+0x384/0x39c
[  387.639905] CPU5: stopping
[  387.642600] CPU: 5 PID: 0 Comm: swapper/5 Tainted: G      D       3.16.0-24-generic #32-Ubuntu
[  387.651166] Call trace:
[  387.653600] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[  387.658970] [<ffffffc000089b84>] show_stack+0x1c/0x28
[  387.663994] [<ffffffc0007316e8>] dump_stack+0x74/0x94
[  387.669018] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[  387.674215] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[  387.679584] Exception stack(0xffffffc3f01f7e00 to 0xffffffc3f01f7f20)
[  387.685991] 7e00: f01f4000 ffffffc3 00b7f308 ffffffc0 f01f7f40 ffffffc3 00086290 ffffffc0
[  387.694125] 7e20: 000f26f4 ffffffc0 00000000 00000000 00c26f80 ffffffc0 00ae5260 ffffffc0
[  387.702260] 7e40: 00ae4000 ffffffc0 000021b8 00000001 25c17d03 00000002 254cfd30 00000000
[  387.710395] 7e60: 00000018 00000000 f01f7d60 ffffffc3 00000400 00000000 000003ff 00000000
[  387.718529] 7e80: 2141bda0 ffffffc3 00000006 00000000 77618100 caac1201 00000000 00000000
[  387.726663] 7ea0: 00000000 00000000 007ffe01 00000000 00000000 00000000 f01f4000 ffffffc3
[  387.734798] 7ec0: 00b7f308 ffffffc0 00b83fa0 ffffffc0 00b63000 ffffffc0 00000000 00000000
[  387.742932] 7ee0: 00000000 00000000 0007b000 00000040 00abe000 ffffffc0 007420d0 ffffffc0
[  387.751066] 7f00: ffffffed 00000000 f01f7f40 ffffffc3 0008628c ffffffc0 f01f7f40 ffffffc3
[  387.759200] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[  387.763966] [<ffffffc0000f26f0>] cpu_startup_entry+0x258/0x2f0
[  387.769767] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[  387.776000] CPU7: stopping
[  387.778694] CPU: 7 PID: 0 Comm: swapper/7 Tainted: G      D       3.16.0-24-generic #32-Ubuntu
[  387.787261] Call trace:
[  387.789695] [<ffffffc0000899f4>] dump_backtrace+0x0/0x174
[  387.795066] [<ffffffc000089b84>] show_stack+0x1c/0x28
[  387.800090] [<ffffffc0007316e8>] dump_stack+0x74/0x94
[  387.805114] [<ffffffc000091318>] handle_IPI+0x194/0x1ac
[  387.810309] [<ffffffc00008132c>] gic_handle_irq+0x80/0x88
[  387.815679] Exception stack(0xffffffc3f01ffe00 to 0xffffffc3f01fff20)
[  387.822086] fe00: f01fc000 ffffffc3 00b7f308 ffffffc0 f01fff40 ffffffc3 00086290 ffffffc0
[  387.830221] fe20: 000f26f4 ffffffc0 00000000 00000000 00c26f80 ffffffc0 00ae5260 ffffffc0
[  387.838355] fe40: 00ae4000 ffffffc0 000021f2 00000001 25c17d03 00000002 254cfd30 00000000
[  387.846490] fe60: 00000018 00000000 f01ffd60 ffffffc3 00000400 00000000 000003ff 00000000
[  387.854624] fe80: 0000001a 00000000 00000013 00000000 0000000e 00000000 00000007 00000000
[  387.862758] fea0: 00000001 00000000 0000000e 00000000 00000007 00000000 f01fc000 ffffffc3
[  387.870893] fec0: 00b7f308 ffffffc0 00b83fa0 ffffffc0 00b63000 ffffffc0 00000000 00000000
[  387.879027] fee0: 00000000 00000000 0007b000 00000040 00abe000 ffffffc0 007420d0 ffffffc0
[  387.887161] ff00: ffffffed 00000000 f01fff40 ffffffc3 0008628c ffffffc0 f01fff40 ffffffc3
[  387.895296] [<ffffffc000084da0>] el1_irq+0x60/0xc0
[  387.900062] [<ffffffc0000f26f0>] cpu_startup_entry+0x258/0x2f0
[  387.905863] [<ffffffc000090d64>] secondary_start_kernel+0x10c/0x11c
[  387.912099] ---[ end Kernel panic - not syncing: Fatal exception in interrupt
[disconnect]

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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:
  New

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

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