LOR: ffs_snapshot.c from 5.2-BETA

[Jesse Guardiani]

Don Lewis wrote:

> On  9 Dec, Jesse Guardiani wrote:
>> Howdy list,
>> 
>> Has anyone seen this yet? Happened while I was fsck'ing my
>> external USB hard drive a few days ago. Didn't see anything
>> recent like this in the archive (Nov was the closest, but it
>> looked like a separate issue).
>> 
>> 
>> acquiring duplicate lock of same type: "vnode interlock"
>>  1st vnode interlock @ ufs/ffs/ffs_snapshot.c:488
>>  2nd vnode interlock @ ufs/ffs/ffs_snapshot.c:491
>> Stack backtrace:
>> backtrace(c06df4ef,c06e3b95,c06eca1f,1eb,246) at backtrace+0x17
>> witness_lock(c42b9a28,8,c06eca1f,1eb,c3b48678) at witness_lock+0x672
>> _mtx_lock_flags(c42b9a28,0,c06eca16,1eb,c19dbf00) at _mtx_lock_flags+0xba
>> ffs_snapshot(c3abbc00,bfbfed88,70,c05482f3,c073f800) at
>> ffs_snapshot+0x1759
> 
> A related LOR was reported a few days ago.  I think it is harmless, but
> I also think I know how to fix it.

Going once... Going twice...

-- 
Jesse Guardiani, Systems Administrator
WingNET Internet Services,
P.O. Box 2605 // Cleveland, TN 37320-2605
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