Hi Brian, On 12/10/18, Brian Foster <bfoster@xxxxxxxxxx> wrote: > The only thing that comes to mind while poking through the code is > perhaps xfsprogs is sending the traditional XFS_IOC_GROWFSDATA command > into the compat_ioctl() path somehow or another (assuming > BROKEN_X86_ALIGNMENT is set). > > What arch is your kernel/xfsprogs? This system is running an amd64 kernel with x32 userspace (including xfsprogs). > What does 'cat /sys/kernel/debug/trace/trace' show if you run > 'trace-cmd start -e xfs:xfs_file*ioctl*' and then attempt the growfs? Looks like I don't have the required tracing enabled in my kernel configuration, but I can build a new one if needed. Is CONFIG_FTRACE sufficient for this? Thanks, Nick