On 1/3/25 2:40 PM, Thomas Weißschuh wrote: > The sysfs interface can be used to trigger arbitrarily large memory > allocations. This can induce pressure on the VM layer to satisfy the > request only to fail anyways. > > Reported-by: cheung wall <zzqq0103.hey@xxxxxxxxx> > Closes: https://lore.kernel.org/lkml/20250103091906.GD1977892@ZenIV/ > Fixes: 73f37068d540 ("ptp: support ptp physical/virtual clocks conversion") > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx> > --- > The limit is completely made up, let me know if there is something > better. I'm also unsure if such constant value is reasonable for all the use-cases. Any additional feedback more than welcome. In any case, I guess it would make sense to update Documentation/ABI/testing/sysfs-ptp accordingly. Thanks, Paolo
