On Nov 15, 2007 10:38 AM, Kay Sievers <[EMAIL PROTECTED]> wrote: > > On Thu, 2007-11-15 at 09:01 +0800, Dave Young wrote: > > On Nov 15, 2007 5:27 AM, Kay Sievers <[EMAIL PROTECTED]> wrote: > > > On Wed, 2007-11-14 at 20:19 +0100, Jiri Kosina wrote: > > > > On Wed, 14 Nov 2007, Kay Sievers wrote: > > > > > > > > > Could it be an init-order problem, where something tries to use the > > > > > block subsystem? Before it is initialized with: > > > > > block/genhd.c :: subsys_initcall(genhd_device_init); > > > > > If that's the case, we have an old bug that nobody noticed with static > > > > > structures, which are zeroed that time, but definitely not properly > > > > > initialized. I'll try to build loop non-modular now, and see if that > > > > > makes the bug appear here. > > > > > > > my .config with which I reproduc this on 2.6.24-rc2-mm1 reliably can be > > > > obtained from http://www.jikos.cz/jikos/junk/.config > > > > > > Hmm, that config doesn't do anything here, and if I make it boot, it > > > does not show the bug. > > > > > > Could you possibly enable kobject debugging and see if that exposes > > > something, maybe something goes wrong with the kset refcount and it gets > > > released while in use. > > > > > Hi, > > I would do that. > > That would be great. > > > BTW, The bug report as EIP at __list_add with CONFIG_DEBUG_LIST=y > > Yeah, that hints that the kset, which contains the list, is not > allocated at the time it is used, or it is already released (kfree) > again by some buggy logic. > > All this could not happen before, as the kset was statically in memory. > It may be an old bug, that just never crashed anything. We already fixed > a bunch of similar things, that showed up while doing this patch set. > Now with the DEBUG_KOBJECT set , nothing more info. But this time the EIP is at the strnlen (called by printk -- line 239 of kobject.c)
EIP is at strnlen +0x9/0x20 EAX 6b6b6b6b EBX c05487c14 ecx 6b6b6b6b EDX fffffffe ---cut--- If you need more infomation, I will copy more (no camera in hand) Regards dave - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/