Date: Sun, 12 Jul 2009 15:54:05 +0100 From: Anton Shterenlikht <mexas@bristol.ac.uk> To: bzeeb+freebsd+lor@zabbadoz.net Cc: freebsd-ia64@freebsd.org Subject: LOR #261 Message-ID: <20090712145405.GA23614@mech-cluster238.men.bris.ac.uk>
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FreeBSD 8.0-BETA1 ia64 LOR below looks like LOR #261, but the line numbers are different. What does state "cannot deadlock" mean in your table? many thanks anton ************************* lock order reversal: 1st 0xa00000001e5adcf0 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2558 2nd 0xe000000010866a00 dirhash (dirhash) @ /usr/src/sys/ufs/ufs/ufs_dirhash.c:285 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, 0xe0000000048ac640) at _witness_debugger+0x60 witness_checkorder(0xe000000010866a00, 0x9, 0xffffffffffffffff, 0x11d, 0x0) at witness_checkorder+0x12c0 _sx_xlock(0xe000000010866a00, 0x0, 0xe0000000048ac640, 0x11d) at _sx_xlock+0xc0 ufsdirhash_acquire(0xe000000010a9a348, 0xe000000010866a00, 0xe00000000477eaf0, 0x38b) at ufsdirhash_acquire+0x50 ufsdirhash_remove(0xe000000010a9a348, 0xa00000001f760018, 0x18, 0xa000000032b45308) at ufsdirhash_remove+0x20 ufs_dirremove(0xe000000010b46760, 0xe000000010a39d88, 0x0, 0x0) at ufs_dirremove+0x240 ufs_remove(0xa000000032b453d8, 0xe000000010a39d88, 0xe0000000045096f0) at ufs_remove+0xe0 VOP_REMOVE_APV(0xe0000000049acdd0, 0xa000000032b453d8, 0xe000000010b459d0, 0xe000000004509760) at VOP_REMOVE_APV+0x1c0 kern_unlinkat(0xe000000010850b10, 0xffffffffffffff9c, 0x200000004041b048, 0x0) at kern_unlinkat+0x2f0 kern_unlink(0xe000000010850b10, 0x200000004041b048, 0x0) at kern_unlink+0x30 unlink(0xe000000010850b10, 0xa000000032b454e8, 0xe0000000048283e0, 0x58f) at unlink+0x30 syscall(0xa000000032b45400, 0xa, 0x200000004041af40, 0xe000000010850b10, 0xe000000010848cd8, 0xe000000004982690, 0xa, 0xa000000032b454e8) 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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