Date: Sun, 12 Jul 2009 16:34:18 +0100 From: Anton Shterenlikht <mexas@bristol.ac.uk> To: bzeeb+freebsd+lor@zabbadoz.net Cc: freebsd-ia64@freebsd.org Subject: LOR #285 Message-ID: <20090712153418.GA67479@mech-cluster238.men.bris.ac.uk>
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FreeBSD 8.0-BETA1 ia64 Looks like LOR #285, but different line numbers: lock order reversal: 1st 0xe000000011d4f6b8 ufs (ufs) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:423 2nd 0xa00000001e77d0b0 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2558 3rd 0xe00000001083b308 ufs (ufs) @ /usr/src/sys/ufs/ffs/ffs_snapshot.c:544 KDB: stack backtrace: db_trace_self(0xe000000004135d60) at db_trace_self+0x20 db_trace_self_wrapper(0xe00000000443add0) at db_trace_self_wrapper+0x70 kdb_backtrace(0xe0000000049da960, 0xe0000000044639d0) at kdb_backtrace+0xc0 _witness_debugger(0x1, 0xe000000004888610, 0xe000000004465270, 0x999, 0xe0000000048a9da8) at _witness_debugger+0x60 witness_checkorder(0xe00000001083b308, 0x9, 0x0, 0x220, 0x0) at witness_checkorder+0x12c0 __lockmgr_args(0xe00000001083b308, 0x80100, 0xe00000001083b330, 0xe000000004876a38, 0x50, 0x33, 0xe0000000048a9da8, 0x220) at __lockmgr_args+0xe60 ffs_lock(0xa000000032bcadd0, 0xe00000001083b308, 0x80100) at ffs_lock+0x130 VOP_LOCK1_APV(0xe0000000049ac600, 0xa000000032bcadb0, 0xe0000000043bb800) at VOP_LOCK1_APV+0x1d0 _vn_lock(0xe00000001083b270, 0x80100, 0xe0000000048a9da8, 0x220, 0xe00000001083b280, 0xa000000032bcadd0, 0xa000000032bcadc8, 0xa000000032bcadc0) at _vn_lock+0xf0 ffs_snapshot(0xe000000010777780, 0xa000000032bcafc8, 0xe00000001083b270, 0xe00000001083b330, 0x1, 0x0, 0xa0000000003b2000, 0x0) at ffs_snapshot+0x2280 ffs_mount(0x0, 0xe0000000048abc50, 0xa000000032bcb100, 0xa000000032bcb100) at ffs_mount+0x2160 vfs_donmount(0x0, 0x211000, 0xe000000010787300) at vfs_donmount+0x1d80 nmount(0xe000000010b663b0, 0xa000000032bcb4e8, 0x0, 0xe0000000048283e0) at nmount+0xf0 syscall(0xa000000032bcb400, 0x17a, 0x201000, 0xe000000010b663b0, 0xe000000010b4f568, 0xe000000004986b90, 0x17a, 0xa000000032bcb4e8) at syscall+0x3e0 epc_syscall_return() at epc_syscall_return -- Anton Shterenlikht Room 2.6, Queen's Building Mech Eng Dept Bristol University University Walk, Bristol BS8 1TR, UK Tel: +44 (0)117 928 8233 Fax: +44 (0)117 929 4423
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