On Thu, 25 Sep 2025 21:29:08 +0530 I Viswanath wrote:

This can be reproduced by executing: 

echo x > /sys/devices/virtual/ptp/ptp0/max_vclocks

where x > KMALLOC_MAX_SIZE/(sizeof(int)) which computes to 1048576 on
my system

What would be a reasonable value for PTP_MAX_VCLOCKS_LIMIT?

I wonder about that, too. Perhaps tying uAPI behavior to
KMALLOC_MAX_SIZE is going to come back to bite us. But I don't
have a great idea for what the max should be.

KMALLOC_MAX_SIZE/(sizeof(int)) is the absolute max value for which the 
memory allocation won't fail