[Lustre-discuss] Lustre 1.8.5 on Fedora 12 and kernel 220.127.116.11
Denis.Charland at imi.cnrc-nrc.gc.ca
Wed Oct 26 13:28:22 PDT 2011
After searching on the WEB, I found that this messages is related to a problem with IMA file free imbalance.
Here's what I found:
Author: Mimi Zohar <zohar at linux.vnet.ibm.com>
AuthorDate: Wed Feb 4 09:07:02 2009 -0500
Committer: James Morris <jmorris at namei.org>
CommitDate: Fri Feb 6 09:05:33 2009 +1100
Integrity: IMA file free imbalance
The number of calls to ima_path_check()/ima_file_free()
should be balanced. An extra call to fput(), indicates
the file could have been accessed without first being
Although f_count is incremented/decremented in places other
than fget/fput, like fget_light/fput_light and get_file, the
current task must already hold a file refcnt. The call to
__fput() is delayed until the refcnt becomes 0, resulting
in ima_file_free() flagging any changes.
- add hook to increment opencount for IPC shared memory(SYSV),
shmat files, and /dev/zero
- moved NULL iint test in opencount_get()
Signed-off-by: Mimi Zohar <zohar at us.ibm.com>
Acked-by: Serge Hallyn <serue at us.ibm.com>
Signed-off-by: James Morris jmorris at namei.org<mailto:jmorris at namei.org>
IMA is enabled by default in the kernel in Fedora12. It can be disabled by removing all lines
beginning with CONFIG_IMA in the kernel configuration file. Is it OK to disable IMA?
Note that IMA is disabled in the kernel configuration file for SLES11 kernel 2.6.32 supplied
with Lustre 1.8.5.
UNIX Systems Administrator
National Research Council Canada
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