panic with today's -current

Sorry, all I have are these lines from messages.
I returned and saw that the machine had rebooted.
Nothing more:

Nov  5 02:46:42 cale syslogd: kernel boot file is /boot/kernel/kernel
Nov  5 02:46:42 cale kernel: instruction pointer        = 0x8:0xc054c85d
Nov  5 02:46:42 cale kernel: stack pointer              = 0x10:0xcdc9dbe0
Nov  5 02:46:42 cale kernel: frame pointer              = 0x10:0xcdc9dbe4
Nov  5 02:46:42 cale kernel: code segment               = base 0x0, limit 
0xfffff, type 0x1b
Nov  5 02:46:42 cale kernel: = DPL 0, pres 1, def32 1, gran 1
Nov  5 02:46:42 cale kernel: processor eflags   = interrupt enabled, IOPL = 0
Nov  5 02:46:42 cale kernel: current process            = 26 (irq16: nvidia0)
Nov  5 02:46:42 cale kernel: trap number                = 30
Nov  5 02:46:42 cale kernel: panic: unknown/reserved trap
Nov  5 02:46:42 cale kernel:
Nov  5 02:46:42 cale kernel: syncing disks, buffers remaining... 2202 2202 
2199 2199 2199 2199 2199
2199 2199 2199 2199 2199 2199 2199 2199 2199 2199 2199 2199 2199 2199 2199
Nov  5 02:46:42 cale kernel: giving up on 1066 buffers
Nov  5 02:46:42 cale kernel: Uptime: 3h15m57s
Nov  5 02:46:42 cale kernel: Shutting down ACPI
Nov  5 02:46:42 cale kernel: stray irq9
Nov  5 02:46:42 cale kernel: Automatic reboot in 15 seconds - press a key on 
the console to abort
Nov  5 02:46:42 cale kernel: Rebooting...