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

The following reply was made to PR port-amd64/39283; it has been noted by GNATS.

From: Tobias Nygren <>
Subject: Re: port-amd64/39283: Kernel crash on Dell Poweredge 2950
Date: Mon, 14 Dec 2009 15:50:54 +0100

 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.
 From ddb I've identified the following pool cache whose resource usage
 looks highly suspicious to me.
 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?

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