Bad traps for unaligned access in STM instruction

Nicolas Pitre nicolas.pitre at
Tue Sep 18 11:44:02 EDT 2012

On Tue, 18 Sep 2012, Lluís Batlle i Rossell wrote:

> In an ideal userland software world, the counters of the traps would be zero.
> But they are not. And without fixup, the mkfs.btrfs fails to run properly, and
> creates a broken filesystem that crashes the kernel.

If a broken btrfs filesystem crashes the kernel, you should definitively 
report it as a bug to the btrfs developers.  Filesystem code must be 
immune to any kind of corruptions and gracefully cope with them.


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