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RT-AC68U "Unable to handle kernel NULL pointer" crash in log

tim

Regular Contributor
Found this error in the system log after enabling Adaptive QOS
F/W is 3.0.0.4.378_3873. Router still seems to working ok.
Any idea what is broken?

Thanks

Code:
kernel: >>> Unable to handle kernel NULL pointer derefere�U�at virtual address 00000000
kernel: >>> pgd = cfb48000
kernel: >>> [00000000] *pgd=9fae2031, *pte=00000000, *ppte=                                : 17 [#1] PREEMPT SMP
kernel: >>> last sy                                                                                                dule:  nf_conntrack_sip. bf78000                                . bf779000. 5137
kernel: >>> module:  nf_                                <4>module:  nf_nat_rtsp. bf762000. 3400
kernel: >>> module:  nf_conntrack                                  nf_nat_ftp. bf755000. 1314
kernel: >>>                                 000. 5131
kernel: >>> module:  ip6table_m                                  ip6t_LOG. bf741000. 4705
kernel: >>> mo                                . 893
kernel: >>> module:  ohci_hcd. bf6cb000. 19288
kernel: >>> module:  ehci_hcd. bf6bc000. 34220
kernel: >>> module:  ufsd. bf601000. 595363
kernel: >>> module:  jnl. bf5f4000. 27939
kernel: >>> module:                                                                                                                                                                                                24
kernel: >>> module:  mbcache. bf534000                                                                                                od. bf508000. 23159
kernel: >>> module:                                                                                                                                                                  eflate. bf47d000. 19990
kernel: >>> module:  igs. bf02d000. 12935
kernel: >>> module:  emf. bf023000. 16346
kernel: >>> module:  et. bf00b000. 64092
kernel: >>> mod                                                                                                track_h323 nf_nat_rtsp nf_conntr                                _ftp ip6table_mangle ip6t_LOG ip                                ufsd(P) jnl ext2 ext4 jbd2 crc16 ext3 jbd mbcache usb_storage sg                            
kernel: >>>                                                                                                  0008ef27
kernel: >>> r10: 00000000  r9 : cf824000  r8 : cf824000
kernel: >>> r7 :                                f825ed8  r4 : cf162cc0
kernel: >>> r3 : 0                                                                zCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment user
kernel: >>> Control: 10c53c7d  Table: 9fb4804a                                                                                                xcf826000)
kernel: >>> 5ea0:                                                       00000000 cf825ed8
kernel: >>> 5                                cf825ed8 be955484 c004d264 5f316                                                                                                                                                                                                                                                              
kernel: >>> 5f80: 00000000 00000000 cf8                                 be955484 00000003
kernel: [truncated] >>> 5fa0: c003dc68 c003dac0 401b8c34 be955484                                                                                                                                                                 0 60000010 00000003 b3f7fbff fff                                                                         
kernel: >>> [<c038cbcc>] (__dab                                                                                                                                                                                            ..                                  0>] (real_nvram_get+0x20/0x3c) from [<c004d264>] (dev_nvram_read+0x6c/0x180)
kernel: >>> [<c004d264>] (de
 

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