Bug 239041 - strace causes kernel error: idr_remove called for id=0 which is not allocated
Summary: strace causes kernel error: idr_remove called for id=0 which is not allocated
Keywords:
Status: CLOSED DUPLICATE of bug 230500
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.0
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
: ---
Assignee: Aristeu Rozanski
QA Contact: Martin Jenner
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2007-05-04 16:06 UTC by Robert Hancock
Modified: 2007-11-30 22:07 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2007-09-11 21:03:45 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Robert Hancock 2007-05-04 16:06:40 UTC 
Description of problem:

Saw an error show up in the dmesg log after I had been doing some strace runs on
various processes.

Version-Release number of selected component (if applicable):
2.6.18-8.1.3.el5

How reproducible:
Unknown

Steps to Reproduce:
1. Strace a process (unsure of the circumstances)
2.
3.
  
Actual results:

Saw this kernel error in dmesg:

idr_remove called for id=0 which is not allocated.

Call Trace:
 [<ffffffff8013b97d>] idr_remove+0xe0/0x14d
 [<ffffffff8018698d>] release_dev+0x65d/0x67b
 [<ffffffff80051314>] tty_release+0x11/0x1a
 [<ffffffff80012281>] __fput+0xae/0x198
 [<ffffffff80023647>] filp_close+0x5c/0x64
 [<ffffffff8001d5cd>] sys_close+0x88/0xa2
 [<ffffffff8005b2c1>] tracesys+0xd1/0xdc


Expected results:
No error

Additional info:
Comment 1 Ernie Petrides 2007-09-11 21:03:45 UTC 
I believe this is one of the possible symptoms of the bug in init_dev()
that was fixed in 2.6.18-19.el5 with the following patch tracking file:

  pty-fix-race-that-could-lead-to-double-idr-index-free.patch

If the problem still occurs with the current RHEL5.1 beta kernel,
please reopen this bug report.


Note to DonZ: that patch tracking file should list bug 230500 in the
header (instead of RHEL4 bug 214188).

*** This bug has been marked as a duplicate of 230500 ***
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