Re: Insufficient allocations in net/unix/garbage.c

[Alan Cox]

> program which opens up a large number of unix domain sockets, eventually
> causing a kernel panic in the garbage collection routines (which test for
> this limit and panic if hit); on systems which have NR_FILE (or
> /proc/sys/kernel/file-max) set to a value larger than 1024 or so.  The

Yep. I know about this. The as shipped systems are all fine, if you up
it you need to change it. 2.1.x fixed this a while ago

> ! 	stack=(unix_socket **)kmalloc(max_stack * sizeof(unix_socket **),
> !                                       GFP_KERNEL);

This is not good. With a very large set of fd's you can now have the kmalloc
hang forever deadlocking the fd recovery. Use vmalloc and your idea is 
correct.

(see 2.1.x)