BUG: unable to handle kernel NULL pointer dereference at (null)
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Medium
|
Unassigned |
Bug Description
Ubuntu 3.13.0-
[25164.310618] usb 7-2: USB disconnect, device number 2
[25164.310819] BUG: unable to handle kernel NULL pointer dereference at (null)
[25164.310875] IP: [<ffffffffa02d0
[25164.310925] PGD 0
[25164.310941] Oops: 0000 [#1] SMP
[25164.310966] Modules linked in: ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp bridge stp llc ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables ctr ccm dm_crypt nfsd auth_rpcgss nfs_acl nfs lockd sunrpc fscache eeepc_wmi asus_wmi sparse_keymap intel_rapl x86_pkg_
[25164.311800] CPU: 1 PID: 71 Comm: khubd Not tainted 3.13.0-45-generic #74-Ubuntu
[25164.311841] Hardware name: System manufacturer System Product Name/P8Z77-V PRO, BIOS 1708 11/09/2012
[25164.311891] task: ffff8807f4b30000 ti: ffff8807f4b26000 task.ti: ffff8807f4b26000
[25164.311932] RIP: 0010:[<
[25164.311993] RSP: 0018:ffff8807f4
[25164.312023] RAX: 0000000000000000 RBX: 02ffff0000000000 RCX: 000000018020000a
[25164.312062] RDX: ffffea001fc85d40 RSI: 000000008020000a RDI: ffffea001fc85c28
[25164.312101] RBP: ffff8807f4b27af0 R08: 0000000000000000 R09: 0000000000000001
[25164.312140] R10: ffffea001fcbe480 R11: ffffffff8122a08d R12: ffffea001fc85cb0
[25164.312178] R13: ffffea001fc85c28 R14: ffff8807f031b240 R15: 0000000000000000
[25164.312217] FS: 000000000000000
[25164.312261] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[25164.312293] CR2: 0000000000000000 CR3: 0000000001c0e000 CR4: 00000000001407e0
[25164.312332] Stack:
[25164.312345] 02ffff0000000000 ffff8807f0250048 ffff8807f024ffc0 ffff8807f4b27b18
[25164.312395] ffffffffa02d0162 ffffea001fc85d40 ffff8807f025bbc8 ffff8807f025bb40
[25164.312443] ffff8807f4b27b40 ffffffffa02d0162 ffff8807f025b5d8 ffff8807ef138748
[25164.312491] Call Trace:
[25164.312519] [<ffffffffa02d0
[25164.312561] [<ffffffffa02d0
[25164.312602] [<ffffffffa02d0
[25164.312644] [<ffffffffa02d1
[25164.312688] [<ffffffffa02ce
[25164.312731] [<ffffffffa0525
[25164.312776] [<ffffffff8154b
[25164.312813] [<ffffffff81497
[25164.312849] [<ffffffff81497
[25164.312884] [<ffffffff81496
[25164.312919] [<ffffffff81493
[25164.312951] [<ffffffff81548
[25164.312987] [<ffffffff8153d
[25164.313020] [<ffffffff81540
[25164.313057] [<ffffffff81547
[25164.313094] [<ffffffff81541
[25164.313126] [<ffffffff81541
[25164.313159] [<ffffffff810ab
[25164.313196] [<ffffffff81541
[25164.313228] [<ffffffff8108b
[25164.313257] [<ffffffff8108b
[25164.313295] [<ffffffff81731
[25164.313326] [<ffffffff8108b
[25164.313362] Code: e9 67 ff ff ff 0f 1f 40 00 0f 1f 44 00 00 55 48 89 e5 41 55 49 89 fd 41 54 4c 8d a7 88 00 00 00 53 48 8b 87 88 00 00 00 4c 39 e0 <48> 8b 18 75 0f eb 21 0f 1f 80 00 00 00 00 48 89 d8 48 89 d3 48
[25164.313614] RIP [<ffffffffa02d0
[25164.313660] RSP <ffff8807f4b27ad8>
[25164.313680] CR2: 0000000000000000
[25164.467559] ---[ end trace 55c6f127d180b7ea ]---
System uptime 7h42m. (Reboot caused by power failure.)
Bug triggered by powering on external USB sound card (Benchmark DAC2 in USB2.0 mode)
lsusb -v is now hanging
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1421057
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.