Re: port-amd64/39283: Kernel crash on Dell Poweredge 2950

[Mindaugas Rasiukevicius <rmind%netbsd.org@localhost>]

Tobias Nygren <tnn%NetBSD.org@localhost> wrote:
>  With some local patches I've been able to reduce the panics to a
>  deadlock waiting for kva that never becomes availabe. It looks like
>  the underlying problem is in fact a resource leak.

Cool.  Although before fixing this, it would be good to fix locking issues
in KVA reclamation.

>  POOL CACHE ksiginfo: size 72, align 8, ioff 0, roflags 0x00000040
>          alloc 0xffffffff80d42f20
>          minitems 0, minpages 0, maxpages 4294967295, npages 264334
>          itemsperpage 56, nitems 21, nout 14802683, hardlimit 4294967295
>          nget 14809537, nfail 13, nput 6854
>          npagealloc 264337, npagefree 3, hiwat 264334, nidle 0
>          cpu layer hits 5450561 misses 14853292
>          cache layer hits 43741 misses 14809551
>          cache layer entry uncontended 14853283 contended 9
>          cache layer empty groups 0 full groups 0
>  
>  Are we aware of any issues related to ksiginfo leakage in 5.0/current?

In conversation with ad@ some time ago, he mentioned some possible ksiginfo
leak.  I will check few code paths with ksiginfo_cache later..

-- 
Mindaugas