lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Mon, 21 Feb 2011 16:52:45 +0100 (CET)
From:	Lukas Czerner <lczerner@...hat.com>
To:	bugzilla-daemon@...zilla.kernel.org
cc:	linux-ext4@...r.kernel.org
Subject: Re: [Bug 29402] New: kernel panics while running ffsb scalability
 workloads on 2.6.38-rc1 through -rc5

On Fri, 18 Feb 2011, bugzilla-daemon@...zilla.kernel.org wrote:
> 
> These panics can be suppressed by using -E lazy_itable_init at mkfs time.  The
> test system survived two series of 10 ffsb tests beginning with a single mkfs
> each.  Subsequently, the system survived a run of about 16 hours in which a
> complete scalability measurement pass was made
> 

Hi Eric,

Are you saying that it works fine (without panic) with lazy_itable_init
feature enabled ? I am confused now, because in the first trace
"spinlock bad magic: ext4lazyinit" the ext4lazyinit thread is obviously
running. When the ext4lazyinit thread is running, it means that inode
table was not zeroed, hence kernel thread (ext4lazyinit) is trying to do
the job. Am I missing something ?

Note that on the kernel which supports lazy itable initialization
(/sys/fs/ext4/features/lazy_itable_init exists) the mke2fs (since
v1.41.12-50-g210fd2c) will skip inode table initialization
automatically (it is the same as you would specify -E lazy_itable_init).

Thanks!
-Lukas
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists