linux-kernel - Re: kernel BUGs when removing largish files with the SLOB allocator

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]

Message-ID: <6495.1158094606@warthog.cambridge.redhat.com>
Date:	Tue, 12 Sep 2006 21:56:46 +0100
From:	David Howells <dhowells@...hat.com>
To:	Matt Mackall <mpm@...enic.com>
Cc:	David Howells <dhowells@...hat.com>, Aubrey <aubreylee@...il.com>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	linux-kernel@...r.kernel.org, davidm@...pgear.com,
	gerg@...pgear.com
Subject: Re: kernel BUGs when removing largish files with the SLOB allocator 

Matt Mackall <mpm@...enic.com> wrote:

> > > You just broke the bit that shrinks the arena.
> > 
> > How?  This is only called once when things are being initialised.  There can
> > be no SLOB objects allocated prior to that point.
> 
> It's on a timer.

So what then?  The timer is still initialised:

	void kmem_cache_init(void)
	{
	+#if 0
		void *p = slob_alloc(PAGE_SIZE, 0, PAGE_SIZE-1);

		if (p)
			free_page((unsigned long)p);
	+#endif

		mod_timer(&slob_timer, jiffies + HZ);
	}

David
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/