Date: Wed, 10 Feb 2010 18:50:03 GMT From: David Naylor <naylor.b.david@gmail.com> To: freebsd-fs@FreeBSD.org Subject: Re: kern/141950: [unionfs] [lor] ufs/unionfs/ufs Lock order reversal Message-ID: <201002101850.o1AIo30m043992@freefall.freebsd.org>
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The following reply was made to PR kern/141950; it has been noted by GNATS. From: David Naylor <naylor.b.david@gmail.com> To: bug-followup@freebsd.org Cc: Subject: Re: kern/141950: [unionfs] [lor] ufs/unionfs/ufs Lock order reversal Date: Wed, 10 Feb 2010 20:44:58 +0200 --nextPart2650448.KVKX8H28Pz Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable A recent -current kernel has produced a different backtrace. I am still=20 experiencing io freezes involving the unionfs mounts. =20 lock order reversal: 1st 0xffffff017423bbd8 unionfs (unionfs) @=20 /usr/src/sys/modules/unionfs/../../fs/unionfs/union_subr.c:356 2nd 0xffffff0113c2a9f8 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2204 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x49 witness_checkorder() at witness_checkorder+0x7ea __lockmgr_args() at __lockmgr_args+0xd43 ffs_lock() at ffs_lock+0x8c VOP_LOCK1_APV() at VOP_LOCK1_APV+0x9b _vn_lock() at _vn_lock+0x50 vputx() at vputx+0x285 unionfs_noderem() at unionfs_noderem+0x1c4 unionfs_reclaim() at unionfs_reclaim+0x11 vgonel() at vgonel+0xf6 vrecycle() at vrecycle+0x58 unionfs_inactive() at unionfs_inactive+0x20 vinactive() at vinactive+0x6b vputx() at vputx+0x267 kern_mkdirat() at kern_mkdirat+0x2e7 syscall() at syscall+0x102 Xfast_syscall() at Xfast_syscall+0xe1 =2D-- syscall (136, FreeBSD ELF64, mkdir), rip =3D 0x80083f8dc, rsp =3D=20 0x7fffffffe778, rbp =3D 0x800a3a180 --- --nextPart2650448.KVKX8H28Pz Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (FreeBSD) iEYEABECAAYFAkty/q0ACgkQUaaFgP9pFrLK7QCeNZfotOiudE3qbm6ct/U8usV/ tUAAn16IFjAEgw9i0A50CL/yMNXTQfuK =F4NZ -----END PGP SIGNATURE----- --nextPart2650448.KVKX8H28Pz--
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