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Date: Sun, 15 Apr 2012 11:19:11 -0300
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Subject: Re: mtdchar kernel oops
From: Fabio Estevam <festevam@gmail.com>
To: Joel Reardon <joel@clambassador.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>, linux-mtd@lists.infradead.org,
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On Sun, Apr 15, 2012 at 8:58 AM, Joel Reardon <joel@clambassador.com> wrote:
> I think that this patch:
> "mtdchar: kill persistently held vfsmount"
> http://permalink.gmane.org/gmane.linux.kernel.commits.head/314175
>
> has started causing kernel oops's when running ubiformat. The oops is
> occuring in fs/namespace.c's mnt_add_count() line:
>        this_cpu_add(mnt->mnt_pcp->mnt_count, n);

I also see kernel oops when running flash_eraseall on a SPI NOR flash.

If this patch is reverted the flash_eraseall operation is successful.

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Date: Sun, 15 Apr 2012 11:19:11 -0300
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Subject: Re: mtdchar kernel oops
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 Artem Bityutskiy <dedekind1@gmail.com>
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On Sun, Apr 15, 2012 at 8:58 AM, Joel Reardon <joel@clambassador.com> wrote=
:
> I think that this patch:
> "mtdchar: kill persistently held vfsmount"
> http://permalink.gmane.org/gmane.linux.kernel.commits.head/314175
>
> has started causing kernel oops's when running ubiformat. The oops is
> occuring in fs/namespace.c's mnt_add_count() line:
> =C2=A0 =C2=A0 =C2=A0 =C2=A0this_cpu_add(mnt->mnt_pcp->mnt_count, n);

I also see kernel oops when running flash_eraseall on a SPI NOR flash.

If this patch is reverted the flash_eraseall operation is successful.