Date: Sat, 19 Dec 2009 20:04:36 +0000 From: Anton Shterenlikht <mexas@bristol.ac.uk> To: bzeeb+freebsd+lor@zabbadoz.net, freebsd-sparc64@freebsd.org Subject: LOR #280 on sparc Message-ID: <20091219200436.GA9715@mech-cluster241.men.bris.ac.uk>
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this looks like lor #280 On sparc64 9.0-current: # umount /cdrom/ lock order reversal: 1st 0xfffff800012c1cb8 ufs (ufs) @ /usr/src/sys/kern/vfs_mount.c:1204 2nd 0xfffff800014f4098 devfs (devfs) @ /usr/src/sys/kern/vfs_subr.c:2188 KDB: stack backtrace: _witness_debugger() at _witness_debugger+0x38 witness_checkorder() at witness_checkorder+0xcf8 __lockmgr_args() at __lockmgr_args+0x8ec vop_stdlock() at vop_stdlock+0x38 VOP_LOCK1_APV() at VOP_LOCK1_APV+0x110 _vn_lock() at _vn_lock+0x80 vrele() at vrele+0x1c0 cd9660_unmount() at cd9660_unmount+0x220 dounmount() at dounmount+0x53c unmount() at unmount+0x3e8 syscall() at syscall+0x2c4 -- syscall (22, FreeBSD ELF64, unmount) %o7=0x101adc -- userland() at 0x40471da8 user trace: trap %o7=0x101adc pc 0x40471da8, sp 0x7fdffffd741 pc 0x101df8, sp 0x7fdffffd8a1 pc 0x102370, sp 0x7fdffffdfc1 pc 0x1012f0, sp 0x7fdffffe0c1 pc 0x4020ae54, sp 0x7fdffffe181 done # -- Anton Shterenlikht Room 2.6, Queen's Building Mech Eng Dept Bristol University University Walk, Bristol BS8 1TR, UK Tel: +44 (0)117 331 5944 Fax: +44 (0)117 929 4423
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