Bug 12200 - BUG: bad unlock balance detected! e1000e
Summary: BUG: bad unlock balance detected! e1000e
Status: RESOLVED PATCH_ALREADY_AVAILABLE
Alias: None
Product: Drivers
Classification: Unclassified
Component: Network (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: Jeff Kirsher
URL:
Keywords:
Depends on:
Blocks: Regressions-2.6.26
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Reported: 2008-12-11 12:34 UTC by Rafael J. Wysocki
Modified: 2008-12-12 14:35 UTC (History)
2 users (show)

See Also:
Kernel Version: commit 717d438d1fde94decef874b9808379d1f4523453
Subsystem:
Regression: Yes
Bisected commit-id:

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Description Rafael J. Wysocki 2008-12-11 12:34:40 UTC 
Subject    : BUG: bad unlock balance detected! e1000e
Submitter  : "Zdenek Kabelac" <zdenek.kabelac@gmail.com>
Date       : 2008-12-08 11:24
References : http://marc.info/?l=linux-kernel&m=122873549700644&w=4
Handled-By : "Jeff Kirsher" <jeffrey.t.kirsher@intel.com>
Patch      : http://marc.info/?l=linux-kernel&m=122895597922096&w=4

This entry is being used for tracking a regression from 2.6.26.  Please don't
close it until the problem is fixed in the mainline.
Comment 1 Jeff Kirsher 2008-12-11 14:01:16 UTC 
During a reset, releasing the swflag after it failed to be acquired would cause a double unlock of the mutex.  Instead, test whether acquisition of the swflag was successful and if not, do not release the swflag.  The reset must still be done to bring the device to a quiescent state.
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