[asterisk-bugs] [JIRA] (DAHLIN-351) Kernel crash in dahdi_dynamic_eth with igb network driver

[Michael Walton (JIRA)]

Michael Walton created DAHLIN-351:
-------------------------------------

             Summary: Kernel crash in dahdi_dynamic_eth with igb network driver
                 Key: DAHLIN-351
                 URL: https://issues.asterisk.org/jira/browse/DAHLIN-351
             Project: DAHDI-Linux
          Issue Type: Bug
      Security Level: None
          Components: dahdi_dynamic_eth
    Affects Versions: 2.10.1
         Environment: Ubuntu 12.04, kernel 2.6.38, i386, Ethernet controller: Intel Corporation I211 Gigabit Network Connection, igb
            Reporter: Michael Walton
            Assignee: Wendell Thompson


Starting a PRI span over dahdi_dynamic_eth in the above environment (specifically, igb network driver) causes immediate kernel crash, with following crash dump (extract):

{noformat}
[ 2721.528920] ------------[ cut here ]------------
[ 2721.533548] kernel BUG at /build/linux-lts-backport-natty-OhJ2Vz/linux-lts-backport-natty-2.6.38/include/linux/skbuff.h:1186!
[ 2721.544840] invalid opcode: 0000 [#1] SMP
[ 2721.548972] last sysfs file: /sys/devices/system/cpu/online
[ 2721.554543] Modules linked in: ...
[ 2721.664699] Pid: 0, comm: swapper Not tainted 2.6.38-14-generic-pae #1~mpx1                                                                                 /
[ 2721.672264] EIP: 0060:[<c1535787>] EFLAGS: 00010283 CPU: 0
[ 2721.677762] EIP is at __skb_pull.part.34+0x8/0xa
[ 2721.682384] EAX: 0000010e EBX: ef508050 ECX: ef6b56c0 EDX: 00000002
[ 2721.688646] ESI: ef53fe46 EDI: ef6b56c0 EBP: f740be54 ESP: f740be54
[ 2721.694912]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[ 2721.700312] Process swapper (pid: 0, ti=f740a000 task=c177af60 task.ti=c17740                                                                             00)
[ 2721.707700] Stack:
[ 2721.709716]  f740be5c c143fcd4 f740be7c f87620b9 ef6b56c0 01000000 00000286 e                                                                             f6b56c0
[ 2721.717599]  c17d95a8 f8764000 f740beb4 c1449d63 f766a000 f740bea8 f766a000 f                                                                             8764000
[ 2721.725469]  c17d95c8 00000000 f766a000 ef6b56c0 c17d95c8 ef6b56c0 d74247e0 d                                                                             79ba580
[ 2721.733341] Call Trace:
[ 2721.735808]  [<c143fcd4>] skb_pull+0x34/0x40
[ 2721.740093]  [<f87620b9>] ztdeth_rcv+0xb9/0xe0 [dahdi_dynamic_eth]
[ 2721.746283]  [<c1449d63>] __netif_receive_skb+0x373/0x4b0
[ 2721.751688]  [<c144afff>] netif_receive_skb+0x6f/0x80
[ 2721.756747]  [<c1440728>] ? __alloc_skb+0x58/0x1f0
...
{noformat}




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