FreeBSD-14.0-CURRENT-amd64-20210408-15dc713ceb5-245885-memstick.img fails to boot on Haswell-based laptop.

Lev Serebryakov lev at
Thu Apr 15 15:04:59 UTC 2021

  I'm trying to install CURRENT (FreeBSD-14.0-CURRENT-amd64-20210408-15dc713ceb5-245885-memstick.img) snapshot onto Lenovo Thinkpad T540p, i7-4700 based laptop.

  Kernel traps on boot with "Fatal trap 9" and this stack trace (hand-copied):

--- trap 0x9

  It is 100% reproducible, and I cannot issue commands to kernel debugger, keyboard is dead.

  Enabling verbose boot helps, with verbose boot it boots to installer.

  Looks like some race condition.

  Is it known problem?

// Lev Serebryakov

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