Displaying 13 results from an estimated 13 matches similar to: "Null deference panic in CentOS-6.5"
2012 Sep 12
2
Deadlock in btrfs-cleaner, related to snapshot deletion
Hello,
(this is a recap of yesterday''s discussion on BTRFS IRC, also to save relevant pastes before pastebins expire)
I have my /home on btrfs; a cronjob makes one snapshot every 30 minutes; these
snapshots are kept for 24-48 hours, then deleted in batches.
This is a 16K Leaf/Node BTRFS on top of mdadm RAID1.
As system uptime approached 2 weeks, I started noticing that the free space
2013 Jun 10
1
btrfs-cleaner Blocked on xfstests 068
I''m running into a problem with the btrfs-cleaner thread becoming
blocked on xfstests 068.
The test locks up indefinitely without completing (normally it
finished in about 45 seconds on my test box).
I''ve replicated the issue on 3.10.0_rc5 and the for-linus branch of 3.9.0.
I ran a git bisect on the 3.9.0 for-linus branch, and tracked my issue
to the following commit:
commit
2010 Nov 18
9
Interesting problem with write data.
Hi,
Recently, I made a btrfs to use. And I met slowness problem. Trying
to diag it. I found this:
1. dd if=/dev/zero of=test count=1024 bs=1MB
This is fast, at about 25MB/s, and reasonable iowait.
2. dd if=/dev/zero of=test count=1 bs=1GB
This is pretty slow, at about 1.5MB/s, and 90%+ iowait, constantly.
May I know why it works like this? Thanks.
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2012 Oct 17
28
Xen PVM: Strange lockups when running PostgreSQL load
I am currently looking at a bug report[1] which is happening when
a Xen PVM guest with multiple VCPUs is running a high IO database
load (a test script is available in the bug report).
In experimenting it seems that this happens (or is getting more
likely) when the number of VCPUs is 8 or higher (though I have
not tried 6, only 2 and 4), having autogroup enabled seems to
make it more likely, too
2012 Jul 31
2
Btrfs Intermittent ENOSPC Issues
I''ve been working on running down intermittent ENOSPC issues.
I can only seem to replicate ENOSPC errors when running zlib
compression. However, I have been seeing similar ENOSPC errors to a
lesser extent when playing with the LZ4HC patches.
I apologize for not following up on this sooner, but I had drifted
away from using zlib, and didn''t notice there was still an issue.
My
2012 Aug 01
7
[PATCH] Btrfs: barrier before waitqueue_active
We need an smb_mb() before waitqueue_active to avoid missing wakeups.
Before Mitch was hitting a deadlock between the ordered flushers and the
transaction commit because the ordered flushers were waiting for more refs
and were never woken up, so those smp_mb()''s are the most important.
Everything else I added for correctness sake and to avoid getting bitten by
this again somewhere else.
2017 Oct 18
0
Null deference panic in CentOS-6.5
On Wed, 18 Oct 2017, wuzhouhui wrote:
> Does anyone have encountered same problem or advice?
Expect minimal help when running custom kernel modules on painfully old CentOS
kernels?
jh
2017 Oct 18
0
Null deference panic in CentOS-6.5
On 18 October 2017 at 04:50, wuzhouhui <wuzhouhui14 at mails.ucas.ac.cn> wrote:
> I googled this issue and found so many people have encountered, but most of
> them just said "the newer kernel doesn't have this problem, so upgrade
> kernel". We can't upgrade kernel easily, so we need to *really* solve this
> problem.
>
>
If you can't update the kernel
2017 Oct 18
2
Null deference panic in CentOS-6.5
Fine, it seems that upgrade kernel is the only effective solution.
> On 18 Oct 2017, at 10:00 PM, Stephen John Smoogen <smooge at gmail.com> wrote:
>
> On 18 October 2017 at 04:50, wuzhouhui <wuzhouhui14 at mails.ucas.ac.cn> wrote:
>> I googled this issue and found so many people have encountered, but most of
>> them just said "the newer kernel doesn't
2017 Oct 18
3
Null deference panic in CentOS-6.5
I googled this issue and found so many people have encountered, but most
of them just said "the newer kernel doesn't have this problem, so
upgrade kernel". We can't upgrade kernel easily, so we need to *really*
solve this problem.
On 10/18/2017 04:41 PM, John Hodrien wrote:
> On Wed, 18 Oct 2017, wuzhouhui wrote:
>
>> Does anyone have encountered same problem or
2015 Jul 15
2
Null deference pointer in dovecot-2.2.18
Dear,
use our static analysis tools, I find some bugs (Null deference pointer) for dovecot-2.2.18. Null deference pointer bugs often make program crashes, Please confim them, Thanks!
1. dovecot-2.2.18/src/config/config-request.c 332
'setting_export_section_name(ctx->prefix, def, children[i], i);', pointer 'children' in line 202 assigned NULL and if
2011 Sep 08
3
What is the deference of Puppi, MCollective and ControlTier?
Hi,
I am using puppet as my configuration solution, it is a very good for
system-level configuration management and compliance. But it is not good at
batch jobs. For now, I have three options: puppi, MCollective and
ControlTier. I don''t know much about them. Can anyone give me some advices
that which of them is better at batch jobs.
Thanks
Yunfeng
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2014 Mar 03
6
[Bug 2207] New: Potential NULL deference, found using coverity
https://bugzilla.mindrot.org/show_bug.cgi?id=2207
Bug ID: 2207
Summary: Potential NULL deference, found using coverity
Product: Portable OpenSSH
Version: -current
Hardware: Other
OS: FreeBSD
Status: NEW
Severity: enhancement
Priority: P5
Component: sshd
Assignee: