linux-kernel - Re: Oops when trying to create more than 16000 timers

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Date:	Mon, 15 Dec 2008 23:44:44 +0200
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Ottavio Campana <ottavio.campana@....unipd.it>
CC:	linux-kernel@...r.kernel.org, error27@...il.com,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	torvalds@...ux-foundation.org, Greg KH <greg@...ah.com>
Subject: Re: Oops when trying to create more than 16000 timers

Hi Ottavio,

Pekka Enberg wrote:
>> I think you're simply hitting RLIMIT_SIGPENDING and then tripping over
>> a bug in alloc_posix_timer() that's fixed by commit
>> aa94fbd5ccd840c8ab26d02439ec799b03a72547 ("fix error-path NULL deref
>> in alloc_posix_timer()") in 2.6.28-rc8.
>>
>> Dan, can you please send your patch to the -stable queue as well?

Ottavio Campana wrote:
> Pekka, can this RLIMIT_SIGPENDING be modified? For my application, I
> will need 60k timers.

I'd assume you can do that via the setrlimit() system call. See the man 
page for details.
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