> I think that either the kmalloc should use __GFP_NOWARN or > vc_do_resize should do stricter size check.
vc_do_resize doesn't know enough to do a stricter size check. There are not many methods it calls but those are: vgacon_resize doesn't error when stupid things happen because of a silly hack for legacy svgatextmode tools. sisusbcon_resize does the right checks but we can get in a situation where we unplug during a resize so attempting to resize and size back might fail. fbcon_resize does the right thing, but again can error if we go size/resize/size back. That means we really have to guess or would have to add 'max size' info the structures. Right now it's clamped to 1Gbyte which is a 32767 x 32767 character display and probably ludicrous. Clamping to 4048 x 1024 chars would cover displays up to 16K x 6K even with the 4x6 font (which is insane on a 4K display, let alone 4 of them). Alan
