Re: Kernel Bug in Journal.c

From: Hans Reiser (reiser_at_bitshadow.namesys.com)
Date: 12/16/03

  • Next message: George Anzinger: "Re: Scheduler degradation since 2.5.66" 
    To: "Wolfpaw - Dale Corse" <admin@wolfpaw.net>, <linux-kernel@vger.kernel.org>, mason@suse.com
Date:	Tue, 16 Dec 2003 03:20:22 +0300

    Thanks kindly for this report, Chris can you take a look at this?

    Hans

    On Monday 15 December 2003 23:30, Wolfpaw - Dale Corse wrote:
    > Greetings,
    >
    > We are getting this error using 2.4.23 on reiserfs, with the
    > reiser quota patches, and grsecurity patches. I have no idea
    > what it is :(
    >
    > kernel BUG at journal.c:869!
    > invalid operand: 0000
    > CPU: 0
    > EIP: 0010:[<c02401c7>] Not tainted
    > EFLAGS: 00010246
    > eax: 00000000 ebx: 0161e62c ecx: df41c540 edx: de195480
    > esi: de195480 edi: 0161e62c ebp: dfe27000 esp: c15bddfc
    > ds: 0018 es: 0018 ss: 0018
    > Process kupdated (pid: 6, stackpage=c15bd000)
    > Stack: c0353330 c01d60a2 c010cb80 de195280 de195280 00000012 dfe27000
    > c023fc62
    > dfe27000 00000000 00000000 00000004 dfe27000 0161e62c 00000002
    > c0244723
    > dfe27000 de195480 00000001 de195298 de195480 00000004 00000002
    > 00000000
    > Call Trace: [<c01d60a2>] [<c023fc62>] [<c0244723>] [<c02450f6>]
    > [<c02d40b3>]
    > [<c02438db>] [<c019dd36>] [<c024444a>] [<c0230caf>] [<c01da2db>]
    > [<c01d974c>]
    > [<c01d9a9e>] [<c019dd36>] [<c019f626>] [<c01d9990>] [<c019d9ae>]
    > [<c01d9990>]
    >
    > Code: 0f 0b 65 03 99 29 35 c0 eb e4 8b 85 f8 00 00 00 3b 58 20 0f
    >
    > It also causes kupdated to go defunct, and we lose the ability to use
    > sync,
    > or unmount a filesystem. (Reboot must be done with the reset switch
    >
    > :()
    >
    > If anyone has any ideas, please drop me a line. I am not subscribed,
    > so
    > please CC responses to admin@wolfpaw.net
    >
    > Thanks in advance for your time,
    > Dale.
    >
    > The offending block of code is:
    >
    > static int flush_commit_list(struct super_block *s, struct
    > reiserfs_journal_list *jl, int flushall) {
    > int i, count ;
    > int bn ;
    > int retry_count = 0 ;
    > int orig_commit_left = 0 ;
    > struct buffer_head *tbh = NULL ;
    > unsigned long trans_id = jl->j_trans_id;
    >
    > reiserfs_check_lock_depth("flush_commit_list") ;
    >
    > if (atomic_read(&jl->j_older_commits_done)) {
    > if (!list_empty(&jl->j_ordered_bh_list))
    > BUG();
    > if (!list_empty(&jl->j_tail_bh_list))
    > BUG();
    > return 0 ;
    > }
    >
    > /* before we can put our commit blocks on disk, we have to make sure
    > everyone older than
    > ** us is on disk too
    > */
    > if (jl->j_len <= 0) {
    > --> BUG();
    > return 0 ;
    > }
    > if (trans_id == SB_JOURNAL(s)->j_trans_id)
    > BUG();
    >
    > get_journal_list(jl);
    >
    > /* write any buffers that must hit disk before the commit is done */
    > write_ordered_buffers(&jl->j_ordered_bh_list, &jl->j_wait_bh_list);
    >
    > if (flushall) {
    > if (flush_older_commits(s, jl) == 1) {
    > /* list disappeared during flush_older_commits. return */
    > goto put_jl;
    > }
    > }
    >
    > --------------------------------
    > Dale Corse
    > System Administrator
    > Wolfpaw Services Inc.
    > http://www.wolfpaw.net
    > (780) 474-4095
    >
    > -
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