I just got this on one of my alpha package machines:
panic: getnewvnode: free vnode isn't
db> trace
Debugger() at Debugger+0x34
panic() at panic+0x124
getnewvnode() at getnewvnode+0x434
ffs_vget() at ffs_vget+0xa8
ufs_lookup() at ufs_lookup+0xd68
ufs_vnoperate() at ufs_vnoper
nicstr: from debugger
panic messages:
---
panic: getnewvnode: free vnode isn't
panic: from debugger
Uptime: 31m13s
dumping to dev ad0s3b, offset 262272
dump ata0: resetting devices .. done
127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107
106 105 104 103 102 101 1
