Date: Tue, 1 Sep 2009 23:04:51 -0400 From: grarpamp <grarpamp@gmail.com> To: freebsd-current@freebsd.org Subject: LOR RELENG_8 umount Message-ID: <d2e731a10909012004n3deca615yffb62a54666eb385@mail.gmail.com>
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FYI... seems to happen now and then, haven't narrowed further. lock order reversal: 1st 0xc51036a0 ufs (ufs) @ /.../src/sys/kern/vfs_mount.c:1200 2nd 0xc6104ad0 devfs (devfs) @ /.../src/sys/ufs/ffs/ffs_vfsops.c:1194 KDB: stack backtrace: db_trace_self_wrapper(c0c75d72,e6f109ec,c08c1375,c08b20fb,c0c78d15,...) at db_trace_self_wrapper+0x26 kdb_backtrace(c08b20fb,c0c78d15,c452f638,c452f568,e6f10a48,...) at kdb_backtrace+0x29 _witness_debugger(c0c78d15,c6104ad0,c0c674f6,c452f568,c0c99f1f,...) at _witness_debugger+0x25 witness_checkorder(c6104ad0,9,c0c99f1f,4aa,c6104aec,...) at witness_checkorder+0x839 __lockmgr_args(c6104ad0,80400,c6104aec,0,0,...) at __lockmgr_args+0x7a7 vop_stdlock(e6f10b50,556,e6f10b48,80400,c6104a78,...) at vop_stdlock+0x62 VOP_LOCK1_APV(c0d55960,e6f10b50,c6104b84,c0d92fe0,c6104a78,...) at VOP_LOCK1_APV+0xb5 _vn_lock(c6104a78,80400,c0c99f1f,4aa,c592a000,...) at _vn_lock+0x5e ffs_flushfiles(c6112a10,0,c5dbe900,556,3,...) at ffs_flushfiles+0xa7 softdep_flushfiles(c6112a10,0,c5dbe900,c0911420,c60feb84,...) at softdep_flushfiles+0x2e ffs_unmount(c6112a10,8000000,c0c7fa06,4f5,80,...) at ffs_unmount+0x149 dounmount(c6112a10,8000000,c5dbe900,47a,398190a5,...) at dounmount+0x46d unmount(c5dbe900,e6f10cf8,8,c5dbe900,c0d58f08,...) at unmount+0x2ff syscall(e6f10d38) at syscall+0x2a3 Xint0x80_syscall() at Xint0x80_syscall+0x20 --- syscall (22, FreeBSD ELF32, unmount), eip = 0x280d9c2f, esp = 0xbfbfe58c, ebp = 0xbfbfe658 ---
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