Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = 80004000
[00000000] *pgd=00000000
Internal error: Oops: 5 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.9.133-at25 #2
Hardware name: Freescale i.MX7 Dual (Device Tree)
task: 8160f7c0 task.stack: 81600000
PC is at dma_cache_maint_page+0xdc/0x154
LR is at 0x80000
pc : [<80113fd0>]    lr : [<00080000>]    psr: 600e0113
sp : 81601d48  ip : ab659000  fp : 81604d14
r10: 00000001  r9 : 00000024  r8 : 816f4900
r7 : 8160f484  r6 : 7428bc00  r5 : 00000000  r4 : 00000000
r3 : 00000000  r2 : 549a7000  r1 : 00000000  r0 : 00080000
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
Control: 10c53c7d  Table: a9fa406a  DAC: 00000051
Process swapper/0 (pid: 0, stack limit = 0x81600218)
Stack: (0x81601d48 to 0x81602000)
1d40:                   00000000 801186b8 00000001 00000001 a822f028 00000000
1d60: 00000000 00000000 00000001 81611158 81611184 00000001 00000000 80114070
1d80: 801186b8 8021adc8 00000001 00000000 a826ac10 00000000 00000001 80114198
1da0: a8936148 a826ac10 00000000 80114a08 00000001 00000000 804e660c a8936148
1dc0: 81601de8 a8936010 00000000 8011495c 00000001 a826ac10 a8936148 81611184
1de0: a897021c 804e685c 00000000 8016f8f8 00000004 a8936010 a8991800 80114aa8
1e00: 00000100 a897026c 80ffed84 80fcd790 40000006 804e6c1c 00000000 81601e34
1e20: a897021c 81601e34 00000200 804a23ac 00000035 81601e34 81601e34 00000000
1e40: 00000000 804e6b38 00000000 a8936010 a8970250 a8970254 00000000 816a63c0
1e60: 8151e284 801360a0 00000000 81602098 00000006 ffffe000 00000101 81016740
1e80: 81602080 80136340 00000000 81601f20 a8170160 81602080 8151e300 816a63c0
1ea0: 0000000a ffffe460 81602d00 00200100 a8170100 816a63c0 00000000 00000033
1ec0: 00000001 00000000 81601f20 a8008000 52f1809c 80136748 81521ce4 80179c54
1ee0: 816051b8 81628000 c080200c c0802000 81601f20 c0803000 64c7d8fc 801014c4
1f00: 807d75dc 200e0013 ffffffff 81601f54 ab61eeb0 81600000 64c7d8fc 8010bdcc
1f20: 00000000 80fbbb7c 00000001 2a0fc000 ab61eeb0 816132a4 00000035 00000035
1f40: ab61eeb0 00000000 64c7d8fc 52f1809c fffffff6 81601f70 80170334 807d75dc
1f60: 200e0013 ffffffff 00000051 00000000 00000000 00000000 81520390 ab61eeb0
1f80: 816132a4 ffffe000 816a3576 81604d88 81522ea8 81604d80 80fb26e0 8017059c
1fa0: 81604d00 81604d2c 00000001 80fcd790 00000000 ffffffff 00000000 81200c64
1fc0: ffffffff ffffffff 00000000 812005a4 00000000 8126ca30 816a5294 81604d18
1fe0: 8126ca2c 81610a00 8000406a 410fc075 00000000 8000807c 00000000 00000000
[<80113fd0>] (dma_cache_maint_page) from [<80114070>] (__dma_page_cpu_to_dev+0x28/0x98)
[<80114070>] (__dma_page_cpu_to_dev) from [<80114198>] (arm_dma_map_page+0x70/0x74)
[<80114198>] (arm_dma_map_page) from [<80114a08>] (arm_dma_map_sg+0xac/0x14c)
[<80114a08>] (arm_dma_map_sg) from [<804e685c>] (imx_dma_tx+0x104/0x2e8)
[<804e685c>] (imx_dma_tx) from [<804e6c1c>] (dma_tx_callback+0xe4/0x164)
[<804e6c1c>] (dma_tx_callback) from [<804a23ac>] (vchan_complete+0x164/0x1a0)
[<804a23ac>] (vchan_complete) from [<801360a0>] (tasklet_action+0xb0/0x15c)
[<801360a0>] (tasklet_action) from [<80136340>] (__do_softirq+0x10c/0x248)
[<80136340>] (__do_softirq) from [<80136748>] (irq_exit+0xc8/0x10c)
[<80136748>] (irq_exit) from [<80179c54>] (__handle_domain_irq+0x80/0xec)
[<80179c54>] (__handle_domain_irq) from [<801014c4>] (gic_handle_irq+0x48/0x8c)
[<801014c4>] (gic_handle_irq) from [<8010bdcc>] (__irq_svc+0x6c/0xa8)
Exception stack(0x81601f20 to 0x81601f68)
1f20: 00000000 80fbbb7c 00000001 2a0fc000 ab61eeb0 816132a4 00000035 00000035
1f40: ab61eeb0 00000000 64c7d8fc 52f1809c fffffff6 81601f70 80170334 807d75dc
1f60: 200e0013 ffffffff
[<8010bdcc>] (__irq_svc) from [<807d75dc>] (cpuidle_enter_state+0x88/0x304)
[<807d75dc>] (cpuidle_enter_state) from [<8017059c>] (cpu_startup_entry+0x194/0x224)
[<8017059c>] (cpu_startup_entry) from [<81200c64>] (start_kernel+0x390/0x39c)
Code: e046200e e0841005 e0020299 e08c3002 (e79c2002)
CPU 1 will stop doing anything useful since another CPU has crashed
Loading crashdump kernel...
Bye!