pbzip fault in L1

[  491.470433] pbzip2[3992]: unhandled level 2 translation fault (11) at 0xffffa2202d4c, esr 0x92000046
[  491.470434] pgd = ffff80036fa00000
[  787.872937] [ffffa2202d4c] *pgd=00000003ac81e003, *pud=00000003ac9f8003, *pmd=0000000000000000
[  491.470560]
[  491.470561] CPU: 0 PID: 3992 Comm: pbzip2 Not tainted 4.4.0-rc5+ #14
[  491.470561] Hardware name: linux,dummy-virt (DT)
[  491.470561] task: ffff80036c8c0b00 ti: ffff80036ca58000 task.ti: ffff80036ca58000
[  491.470561] PC is at 0xffffa6703034
[  491.470561] LR is at 0xffffa6701230
[  491.470562] pc : [<0000ffffa6703034>] lr : [<0000ffffa6701230>] pstate: 60000000
[  491.470562] sp : 0000ffffa4ba9770
[  787.874818] x29: 0000ffffa4ba9770 x28: 00000000000000e7
[  787.874822] x27: 0000000000000006 x26: 00000000000000e5
[  787.874825] x25: 0000000000000000 x24: 0000000000061575
[  787.874828] x23: 0000000000000008 x22: 0000ffff9c00ea9c
[  787.874830] x21: 0000000000000008 x20: 0000ffff9c00f8c0
[  787.874833] x19: 0000ffff9c0008c0 x18: 0000000000001f26
[  787.874835] x17: 00000000000dbba0 x16: 0000000000000006
[  787.874838] x15: 0000000000000002 x14: 0000000000000000
[  787.874840] x13: 0000ffff9c00ba3c x12: 000000000007ee83
[  787.874842] x11: 0000000000000102 x10: 000000000000000c
[  787.874845] x9 : 0000000000004650 x8 : 0000000000000001
[  787.874848] x7 : 0000000000000000 x6 : 000000000000002d
[  787.874850] x5 : 0000000000000101 x4 : 0000000000000100
[  787.874853] x3 : 0000000001880180 x2 : 0000ffffa2200ec0
[  787.874855] x1 : 00000000000000b8 x0 : 0000000000000d62