Re: panic: kmem_map too small

[Petri Helenius]

David Schultz wrote:

Thus spake Petri Helenius <[EMAIL PROTECTED]>:

I seem to get kmem_map too small panics when using large buffers with
bpf. Is there a tunable I should be increasing?

Yes, increase KVA_PAGES in your kernel config.

I put in KVA_PAGES=1024
with following results on next boot:

Fatal trap 12: page fault while in kernel mode
cpuid = 1; lapic.id = 06000000
fault virtual address = 0x1
fault code = supervisor write, page not present
instruction pointer = 0x8:0xc01efc88
stack pointer = 0x10:0xdf0ccbcc
frame pointer = 0x10:0xdf0ccbf0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 15 (swi1: net)
trap number lastlog: Permission denied

Removing the option and recompiling kernel from the same sources makes it work fine.

Pete



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