linux-kernel - Re: 2.6.25.11-97.fc9 (P): idr_remove called for id=236 which is not allocated

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Message-ID: <19f34abd0808150827m5128c8f6wd517796d95227654@mail.gmail.com>
Date:	Fri, 15 Aug 2008 17:27:20 +0200
From:	"Vegard Nossum" <vegard.nossum@...il.com>
To:	"Alan Cox" <alan@...rguk.ukuu.org.uk>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.25.11-97.fc9 (P): idr_remove called for id=236 which is not allocated

On Fri, Aug 15, 2008 at 5:11 PM, Vegard Nossum <vegard.nossum@...il.com> wrote:
> Hi,
>
> First the confessions: It's fedora-patched kernel, 2.6.25.11-97.fc9,
> tainted by NVIDIA driver. So feel free to drop to /dev/null until I
> can reproduce on a clean and recent kernel. (But -rc3 didn't boot for
> me, and I don't have anything else handy atm.)

I did get -rc3 working with some command line options.

>
> By bashing on random device nodes (with mknod + mmap as root), I got a
> few messages of this kind:
>
> idr_remove called for id=236 which is not allocated.
> Pid: 3019, comm: a.out Tainted: P         2.6.25.11-97.fc9.i686 #1
>  [<c04f030c>] idr_remove+0xd5/0x138
>  [<c0540bfc>] release_dev+0x5bd/0x5cf
>  [<c04909fd>] ? d_free+0x3b/0x4d
>  [<c04955d0>] ? mntput_no_expire+0x16/0x69
>  [<c048309d>] ? __fput+0x149/0x151
>  [<c0540d8c>] tty_release+0x12/0x1c
>  [<c0483001>] __fput+0xad/0x151
>  [<c04830bc>] fput+0x17/0x19
>  [<c04807df>] filp_close+0x50/0x5a
>  [<c0480852>] sys_close+0x69/0xa1
>  [<c0405bf2>] syscall_call+0x7/0xb
>  [<c0620000>] ? agp_amd64_probe+0x134/0x3ee
>  =======================

Now it looks more like this (with very frequent messages):

ida_remove called for id=112 which is not allocated.
ida_remove called for id=67 which is not allocated.
ida_remove called for id=191 which is not allocated.
ida_remove called for id=23 which is not allocated.

..and with no backtrace, so I guess it means "not harmful". Sorry for the noise.


Vegard

-- 
"The animistic metaphor of the bug that maliciously sneaked in while
the programmer was not looking is intellectually dishonest as it
disguises that the error is the programmer's own creation."
	-- E. W. Dijkstra, EWD1036
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