Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 15 Nov 2007 22:05:26 -0700
From:      Scott Long <scottl@samsco.org>
To:        Kostik Belousov <kostikbel@gmail.com>
Cc:        ups@freebsd.org, tegge@freebsd.org, current@freebsd.org
Subject:   Re: panic: ffs_reallocblk: start == end
Message-ID:  <473D2516.9080805@samsco.org>
In-Reply-To: <20071116044858.GB78396@deviant.kiev.zoral.com.ua>
References:  <473B9A43.5060401@FreeBSD.org> <473CC522.5080904@FreeBSD.org> <20071116044858.GB78396@deviant.kiev.zoral.com.ua>

next in thread | previous in thread | raw e-mail | index | archive | help
Kostik Belousov wrote:
> On Thu, Nov 15, 2007 at 11:16:02PM +0100, Kris Kennaway wrote:
>> Kris Kennaway wrote:
>>> I got this panic on an 8 core amd64 running 8.0 when writing to a ufs on 
>>> a md device:
>>>
>>> panic: ffs_reallocblk: start == end
>>>
>>> db> wh
>>> Tracing pid 59911 tid 100115 td 0xffffff0003b90000
>>> kdb_enter() at kdb_enter+0x31
>>> panic() at panic+0x1c0
>>> ffs_reallocblks() at ffs_reallocblks+0xb11
>>> VOP_REALLOCBLKS_APV() at VOP_REALLOCBLKS_APV+0xb9
>>> cluster_write() at cluster_write+0x38a
>>> ffs_write() at ffs_write+0x575
>>> VOP_WRITE_APV() at VOP_WRITE_APV+0x147
>>> vn_write() at vn_write+0x213
>>> dofilewrite() at dofilewrite+0x9a
>>> kern_writev() at kern_writev+0x4f
>>> write() at write+0x4b
>>> syscall() at syscall+0x301
>>> Xfast_syscall() at Xfast_syscall+0xab
>>> --- syscall (4, FreeBSD ELF64, write), rip = 0x800a65d0c, rsp = 
>>> 0x7fffffffd268, rbp = 0x2800 ---
>>>
>>> Kris
>>>
>> Another one of these on a different machine.  Looks like something is 
>> definitely broken.
>>
> Kris,
> this is consequence of the checks moved from DIAGNOSTIC to INVARIANTS
> ifdef for ffs, and actually being compiled as result. Peter Holm reported
> the "ffs_truncate3" panic.

So does this check identify a real problem that needs to be fixed?

Scott




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?473D2516.9080805>