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Date:      Thu, 21 Jun 2001 11:02:41 +0300
From:      Stanislav Grozev <tacho@daemonz.org>
To:        freebsd-current@freebsd.org
Subject:   lock order reversal
Message-ID:  <20010621110240.B2064@aiel.daemonz.org>

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lock order reversal
 1st 0xc03f0140 mntvnode @ /usr/src/sys/ufs/ffs/ffs_vfsops.c:1007
 2nd 0xcaec972c vnode interlock @ /usr/src/sys/ufs/ffs/ffs_vfsops.c:1016

this is with softupdates enabled, and surprisingly enough it works, but
only on my ThinkPad A21m. a desktop with the same source fails miserably
with softupdates.

also, when first using something that enables bpf (tcpdump for example),
there is another reversal:

lock order reversal
 1st 0xc03d9940 bpf global lock @ /usr/src/sys/net/bpf.c:365
 2nd 0xc1057b9c xl0 @ /usr/src/sys/pci/if_xl.c:2819

-tacho

--=20
   [i don't follow] | [http://daemonz.org/ || tacho@daemonz.org]
   0x44FC3339 || [02B5 798B 4BD1 97FB F8DB 72E4 DCA4 BE03 44FC 3339]

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