I have found three repeatable LORs in FreeBSD 8.0-CURRENT / amd64 cvsupped and rebuild in last 12 hours. I tried to identify whether some of the LORs were already reported, but I am not sure so I list them all. Especially the first is interesting as it involves 3 locks. Please let me know if I can somehow help to fix them. Trying to mount root from ufs:/dev/da0s1a lock order reversal: 1st 0xffffff0001379000 vfslock (vfslock) @ /usr/src/sys/kern/vfs_subr.c:372 2nd 0xffffff00012fed80 devfs (devfs) @ /usr/src/sys/kern/vfs_lookup.c:432 3rd 0xffffff0001378c80 vfslock (vfslock) @ /usr/src/sys/kern/vfs_subr.c:372 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x7d8 __lockmgr_args() at __lockmgr_args+0xca8 vfs_busy() at vfs_busy+0xe7 vfs_mount_alloc() at vfs_mount_alloc+0x88 vfs_donmount() at vfs_donmount+0xdbd kernel_mount() at kernel_mount+0xa1 kernel_vmount() at kernel_vmount+0xce vfs_mountroot_try() at vfs_mountroot_try+0x102 vfs_mountroot() at vfs_mountroot+0x3f0 start_init() at start_init+0x62 fork_exit() at fork_exit+0x12a fork_trampoline() at fork_trampoline+0xe --- trap 0, rip = 0, rsp = 0xfffffffe4000ad40, rbp = 0 --- lock order reversal: 1st 0xffffff00012fe620 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2051 2nd 0xffffff0001379000 vfslock (vfslock) @ /usr/src/sys/kern/vfs_subr.c:372 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x7d8 __lockmgr_args() at __lockmgr_args+0xca8 vfs_busy() at vfs_busy+0xe7 lookup() at lookup+0x8c2 namei() at namei+0x43f kern_unlinkat() at kern_unlinkat+0x9d vfs_mountroot_try() at vfs_mountroot_try+0x418 vfs_mountroot() at vfs_mountroot+0x3f0 start_init() at start_init+0x62 fork_exit() at fork_exit+0x12a fork_trampoline() at fork_trampoline+0xe --- trap 0, rip = 0, rsp = 0xfffffffe4000ad40, rbp = 0 --- lock order reversal: 1st 0xffffff0001125070 user map (user map) @ /usr/src/sys/vm/vm_map.c:3115 2nd 0xffffff00012fe270 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2051 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a _witness_debugger() at _witness_debugger+0x2e witness_checkorder() at witness_checkorder+0x7d8 __lockmgr_args() at __lockmgr_args+0xca8 ffs_lock() at ffs_lock+0x8c VOP_LOCK1_APV() at VOP_LOCK1_APV+0x9b _vn_lock() at _vn_lock+0x47 vget() at vget+0x92 vnode_pager_lock() at vnode_pager_lock+0x1d3 vm_fault() at vm_fault+0x1e2 trap_pfault() at trap_pfault+0x128 trap() at trap+0x51c calltrap() at calltrap+0x8 --- trap 0xc, rip = 0x40014f, rsp = 0x7fffffffee70, rbp = 0x7fffffffee90 --- Fix: Unfortunately unknown to me. How-To-Repeat: reboot the system.
Responsible Changed From-To: freebsd-amd64->freebsd-bugs None of the LORs seems to be amd64 specific.
Responsible Changed From-To: freebsd-bugs->freebsd-fs Over to maintainer(s).
For bugs matching the following criteria: Status: In Progress Changed: (is less than) 2014-06-01 Reset to default assignee and clear in-progress tags. Mail being skipped