Bug 200198 - lockdep: skb_queue_lock_key, orinoco_send_wevents.
Summary: lockdep: skb_queue_lock_key, orinoco_send_wevents.
Keywords:
Status: CLOSED INSUFFICIENT_DATA
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: rawhide
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Brian Brock
URL:
Whiteboard: bzcl34nup
Depends On:
Blocks: FCMETA_LOCKDEP
TreeView+ depends on / blocked
 
Reported: 2006-07-26 05:41 UTC by Chris Ball
Modified: 2008-05-07 00:42 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2008-05-07 00:42:00 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)
dmesg (35.42 KB, text/plain)
2006-07-26 05:41 UTC, Chris Ball
no flags Details

Description Chris Ball 2006-07-26 05:41:10 UTC
Think this is a new lockdep; seen after updating to 2432, on insertion of an
Orinoco PC Card.  Not immediately reproducible, and have been using other
kernels post-lockdep and haven't seen this before.

eth1: Station name "HERMES I"
eth1: ready
eth1: orinoco_cs at 0.0, irq 7, io 0xc100-0xc13f
ADDRCONF(NETDEV_UP): eth1: link is not ready
eth1: New link status: Disconnected (0002)

======================================================
[ INFO: hard-safe -> hard-unsafe lock order detected ]
------------------------------------------------------
events/0/5 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
 (&skb_queue_lock_key){-+..}, at: [<c05aab55>] skb_queue_tail+0x14/0x32

and this task is already holding:
 (&priv->lock#2){++..}, at: [<e05ea32f>] orinoco_send_wevents+0x1e/0x7b [orinoco
]
which would create a new lock dependency:
 (&priv->lock#2){++..} -> (&skb_queue_lock_key){-+..}

but this new dependency connects a hard-irq-safe lock:
 (&priv->lock#2){++..}
... which became hard-irq-safe at:
  [<c043be8b>] lock_acquire+0x4b/0x6c
  [<c0607417>] _spin_lock_irqsave+0x22/0x32
  [<e05ea3ce>] orinoco_interrupt+0x42/0xe29 [orinoco]
  [<c044fa14>] handle_IRQ_event+0x20/0x4d
  [<c044fad5>] __do_IRQ+0x94/0xef
  [<c040674c>] do_IRQ+0xb9/0xcd
  [<c0404a49>] common_interrupt+0x25/0x2c
  [<c040662f>] do_softirq+0x5a/0xbe

to a hard-irq-unsafe lock:
 (&skb_queue_lock_key){-+..}
... which became hard-irq-unsafe at:
...  [<c043be8b>] lock_acquire+0x4b/0x6c
  [<c0607118>] _spin_lock_bh+0x1e/0x2d
  [<c05e5095>] udp_poll+0x49/0xce
  [<c05a6248>] sock_poll+0x12/0x15
  [<c048237a>] do_sys_poll+0x1f7/0x3c3
  [<c048257a>] sys_poll+0x34/0x36
  [<c0403faf>] syscall_call+0x7/0xb

Attaching full dmesg.

Comment 1 Chris Ball 2006-07-26 05:41:10 UTC
Created attachment 133042 [details]
dmesg

Comment 2 Bug Zapper 2008-04-03 17:51:09 UTC
Based on the date this bug was created, it appears to have been reported
against rawhide during the development of a Fedora release that is no
longer maintained. In order to refocus our efforts as a project we are
flagging all of the open bugs for releases which are no longer
maintained. If this bug remains in NEEDINFO thirty (30) days from now,
we will automatically close it.

If you can reproduce this bug in a maintained Fedora version (7, 8, or
rawhide), please change this bug to the respective version and change
the status to ASSIGNED. (If you're unable to change the bug's version
or status, add a comment to the bug and someone will change it for you.)

Thanks for your help, and we apologize again that we haven't handled
these issues to this point.

The process we're following is outlined here:
http://fedoraproject.org/wiki/BugZappers/F9CleanUp

We will be following the process here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping to ensure this
doesn't happen again.

Comment 3 Bug Zapper 2008-05-07 00:41:58 UTC
This bug has been in NEEDINFO for more than 30 days since feedback was
first requested. As a result we are closing it.

If you can reproduce this bug in the future against a maintained Fedora
version please feel free to reopen it against that version.

The process we're following is outlined here:
http://fedoraproject.org/wiki/BugZappers/F9CleanUp


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