linux-ext4 - [Bug 11688] Oops while writing on a newly ext4 formated 1TB partition on a external USB drive

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Message-Id: <20090118002408.13D9F10800F@picon.linux-foundation.org>
Date:	Sat, 17 Jan 2009 16:24:08 -0800 (PST)
From:	bugme-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 11688] Oops while writing on a newly ext4 formated 1TB partition on a external USB drive

http://bugzilla.kernel.org/show_bug.cgi?id=11688





------- Comment #3 from tytso@....edu  2009-01-17 16:24 -------
Hi, any more information about this bug? How much memory do you have?

What ext3 filesystems do you have mounted?  The oops is in ext3 code:


handle_t *journal_start(journal_t *journal, int nblocks)
{
        handle_t *handle = journal_current_handle();
        int err;

        if (!journal)
                return ERR_PTR(-EROFS);

        if (handle) {
                J_ASSERT(handle->h_transaction->t_journal == journal); <----
                handle->h_ref++;
                return handle;
        }

It seems to be related ext3's quota code -- and again it seems to be related to
an attempt to free memory when the system is under memory pressure.  This looks
very much like a quota and/or ext3 bug.




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