[B.A.T.M.A.N.] batctl oops on batctl gateways call

Antonio Quartulli antonio at meshcoding.com
Sat May 3 10:41:21 CEST 2014


FYI, we are rather confident that this patch
https://lists.open-mesh.org/pipermail/b.a.t.m.a.n/2014-May/011920.html
fixes the problem you have seen.

Cheers,

On 12/04/14 23:15, Fabrice Dossin wrote:
> Hi,
> I could not reproduce this. I keep you update if I see this again.
> Best regards,
> Fabrice
> 
> On 3 April 2014 10:21, Fabrice Dossin <fabrice.dossin at gmail.com> wrote:
>> (Sorry, reformatting again, leaving text mode)
>>
>>
>> Hi,
>>
>> Sorry, my mail client did this behind my  back. I did resend the stack
>> here under for readability.
>>
>> For now, it has append only one time on one node. This particular node
>> does not have any other node in his range. I execute a "batctl
>> gateways" each 5 minutes for monitoring. I will let you know if it
>> appends again today or if I found information for reproducibility.
>>
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.500226] Unable to handle kernel
>> NULL pointer dereference at virtual address 00000022
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.508175] pgd = d4918000
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.514355] [00000022] *pgd=138f9831,
>> *pte=00000000, *ppte=00000000
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.521733] Internal error: Oops: 17
>> [#5] PREEMPT ARM
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.527131] Modules linked in: tun
>> ipt_MASQUERADE iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4
>> nf_nat nf_conntrack iptable_filter ip_tables x_tables ipv6 bcm2708_rng
>> bcm2708_wdog batman_adv(O) rtc_ds1307 qmi_wwan option usb_wwan arc4
>> usbserial cdc_wdm rt2800usb rt2800lib rt2x00usb rt2x00lib mac80211 cfg80211
>> crc_ccitt sr_mod cdrom leds_gpio led_class rt5572sta(O) spi_bcm2708
>> i2c_bcm2708 btusb bluetooth rfkill
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.544610] CPU: 0 PID: 7261 Comm:
>> batctl Tainted: G      D    O 3.10.30+ #1
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.550263] task: d49f3180 ti: d38d0000
>> task.ti: d38d0000
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.556017] PC is at
>> batadv_orig_router_get+0x50/0x9c [batman_adv]
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.561587] LR is at
>> batadv_orig_router_get+0x10/0x9c [batman_adv]
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.566974] pc : [<bf35e218>]    lr :
>> [<bf35e1d8>]    psr: 20000013
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.566974] sp : d38d1ea8  ip :
>> 0000000a  fp : dda60600
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.577350] r10: cccccccd  r9 :
>> ddab7000  r8 : dda60600
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.582439] r7 : 00000000  r6 :
>> 00000000  r5 : d4826e00  r4 : 00000000
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.587535] r3 : d4ac0000  r2 :
>> 00000000  r1 : 00000000  r0 : 00000002
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.592468] Flags: nzCv  IRQs on  FIQs
>> on  Mode SVC_32  ISA ARM  Segment user
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.597357] Control: 00c5387d  Table:
>> 14918008  DAC: 00000015
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.602319] Process batctl (pid: 7261,
>> stack limit = 0xd38d01b0)
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.607230] Stack: (0xd38d1ea8 to
>> 0xd38d2000)
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.611903] 1ea0:
>> d49f3180 d49c2580 00000000 bf35a62c 000000ff bf368ed8
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.616816] 1ec0: bf368ee0 bf368eec
>> dc89b000 dbe3cd08 ddab7000 dc83bba0 dbd10900 00000000
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.621720] 1ee0: 00100073 00000000
>> d25a0aa0 00000000 00000000 00000001 d38d1f20 00000001
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.626477] 1f00: dda60600 c00f653c
>> d1f20790 d38d1f80 00001000 b6f18000 dda60628 00000000
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.631263] 1f20: 00000000 00000000
>> 00001000 dc83bba0 00000001 d25a0aa0 b6f18000 d38d0000
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.636092] 1f40: d38d1f80 00001000
>> d38d0000 00001000 bea8eb54 c00d7530 00000000 00000003
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.640834] 1f60: 00000000 00000000
>> 00000000 d25a0aa0 b6f18000 00000000 00001000 c00d77c4
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.645450] 1f80: 00000000 00000000
>> ffffffff 00916008 fbad2488 00000000 00000003 c000dd68
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.650123] 1fa0: 00000000 c000dbc0
>> 00916008 fbad2488 00000003 b6f18000 00001000 00000000
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.654758] 1fc0: 00916008 fbad2488
>> 00000000 00000003 00000000 00021450 b6f1f000 bea8eb54
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.659333] 1fe0: 00000000 bea8e8c8
>> b6d945f8 b6de52bc 60000010 00000003 00000000 00000000
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.664121] [<bf35e218>]
>> (batadv_orig_router_get+0x50/0x9c [batman_adv]) from [<bf35a62c>]
>> (batadv_gw_client_seq_print_text+0xac/0x220 [batman_adv])
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.673531] [<bf35a62c>]
>> (batadv_gw_client_seq_print_text+0xac/0x220 [batman_adv]) from [<c00f653c>]
>> (seq_read+0x1d0/0x4cc)
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.678287] [<c00f653c>]
>> (seq_read+0x1d0/0x4cc) from [<c00d7530>] (vfs_read+0x98/0x17c)
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.683071] [<c00d7530>]
>> (vfs_read+0x98/0x17c) from [<c00d77c4>] (SyS_read+0x3c/0x70)
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.687982] [<c00d77c4>]
>> (SyS_read+0x3c/0x70) from [<c000dbc0>] (ret_fast_syscall+0x0/0x30)
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.692822] Code: e8bd8038 e593000c
>> e3500000 0afffff8 (e5902020)
>> Apr  2 11:45:08 pv2-1dnci kernel: [ 7432.718781] ---[ end trace
>> 1e5ba977f5516301 ]---
>>
>> Regards,
>> Fabrice
>>
>>>
>>>> Hi Fabrice,
>>>>
>>>> On 02/04/14 13:50, Fabrice Dossin wrote:
>>>>> Dear all,
>>>>>
>>>>> Hello.
>>>>> I am not sure it has been notified so I post this issue here.
>>>>> It is my first post, so tell me if I do it bad...
>>>>>
>>>>
>>>> no problem, it's fine! Maybe sending the stack trace without adding new
>>>> lines is better, but this is fine anyway :)
>>>>
>>>> Are you able to reproduce this problem somehow? Or it happened only once
>>>> under no particular conditions?
>>>>
>>>> Cheers,
>>>>
>>>>
>>>> --
>>>> Antonio Quartulli
>>>>
>>
> 

-- 
Antonio Quartulli

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