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SubjectRe: 2.6.23-rc7-mm1


On 25/09/2007 3:12 AM, J. Bruce Fields wrote:
> On Mon, Sep 24, 2007 at 09:59:29AM -0700, Andrew Morton wrote:
>> On Tue, 25 Sep 2007 00:52:30 +1000 Reuben Farrelly <reuben-linuxkernel@reub.net> wrote:
>>
>>>
>>> On 24/09/2007 7:17 PM, Andrew Morton wrote:
>>>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc7/2.6.23-rc7-mm1/
>>>>
>>>> - New git tree git-powerpc-galak.patch added to the -mm lineup: ppc32
>>>> things, mainly (Kumar Gala <galak@gate.crashing.org>)
>>> I'm observing a problem with this kernel (as well as 2.6.23-rc6-mm1) which
>>> manifests itself only in my Postfix/application mail.logs:
>>>
>>> Sep 25 00:25:40 tornado postfix/smtp[12520]: fatal: select lock: Cannot allocate
>>> memory
>>> Sep 25 00:25:41 tornado postfix/master[8002]: warning: process
>>> /usr/lib64/postfix/smtp pid 12520 exit status 1
>>>
>>> This is happening frequently with processes started via 'master' (smtp, smtpd
>>> and cleanup), but it does not appear to have any noticeable operational impact
>>> apart from logging a lot of copies of this message.
>>>
>>> The corresponding code in Postfix which triggers this is (choice of 3 files in
>>> src/master are all possibilities which all have much the same code)
>
> Oog. Looks like it's the "Memory shortage can result in inconsistent
> flocks state" patch--the error variable is being set in some cases when
> it shouldn't be. Does the following fix it?
>
> That's in my git tree, not in mainline. I'll fix up my copy.
>
> And I'll spend some time today figuring out what to do about regression
> testing for the posix lock, flock, and lease code.
>
> Thanks for the bug report!
>
> --b.
>
> diff --git a/fs/locks.c b/fs/locks.c
> index a6c5917..3e8bfd2 100644
> --- a/fs/locks.c
> +++ b/fs/locks.c
> @@ -740,6 +740,7 @@ static int flock_lock_file(struct file *filp, struct file_lock *request)
> new_fl = locks_alloc_lock();
> if (new_fl == NULL)
> goto out;
> + error = 0;
> }
>
> for_each_lock(inode, before) {

Yes that has fixed it, thanks!

Reuben
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