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Date: Thu, 6 May 2010 22:46:01 -1000 (HST)
From: Jeff Roberson <jroberson@jroberson.net>
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To: Vladimir Grebenschikov <vova@fbsd.ru>
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Cc: current@freebsd.org
Subject: Re: SUJ update - new panic - "ffs_copyonwrite: recursive call"
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On Sun, 2 May 2010, Vladimir Grebenschikov wrote:

> Hi
>
> While 'make buildworld'
>
> kgdb /boot/kernel/kernel /var/crash/vmcore.13
> GNU gdb 6.1.1 [FreeBSD]

Hi Vladimir,

I checked in a fix for this at revision 207742.  If you can verify that it 
works for you it would be appreciated.

Thanks!
Jeff

> ...
> #0  0xc056b93c in doadump ()
> (kgdb) bt
> #0  0xc056b93c in doadump ()
> #1  0xc0489019 in db_fncall ()
> #2  0xc0489411 in db_command ()
> #3  0xc048956a in db_command_loop ()
> #4  0xc048b3ed in db_trap ()
> #5  0xc05985a4 in kdb_trap ()
> #6  0xc06f8b5e in trap ()
> #7  0xc06dd6eb in calltrap ()
> #8  0xc059870a in kdb_enter ()
> #9  0xc056c1d1 in panic ()
> #10 0xc066d602 in ffs_copyonwrite ()
> #11 0xc068742a in ffs_geom_strategy ()
> #12 0xc05d8955 in bufwrite ()
> #13 0xc0686e64 in ffs_bufwrite ()
> #14 0xc067a8a2 in softdep_sync_metadata ()
> #15 0xc068c568 in ffs_syncvnode ()
> #16 0xc0681425 in softdep_prealloc ()
> #17 0xc066592a in ffs_balloc_ufs2 ()
> #18 0xc066a252 in ffs_snapblkfree ()
> #19 0xc065eb9a in ffs_blkfree ()
> #20 0xc0673de0 in freework_freeblock ()
> #21 0xc06797c7 in handle_workitem_freeblocks ()
> #22 0xc0679aaf in process_worklist_item ()
> #23 0xc06821f4 in softdep_process_worklist ()
> #24 0xc0682940 in softdep_flush ()
> #25 0xc0542a00 in fork_exit ()
> #26 0xc06dd760 in fork_trampoline ()
> (kgdb) x/s panicstr
> 0xc07c2b80:	 "ffs_copyonwrite: recursive call"
> (kgdb)
>
>
>
> -- 
> Vladimir B. Grebenschikov
> vova@fbsd.ru
>