Re: kern/45718 (processes sometimes get stuck and spin in vm_map)

[Taylor R Campbell <campbell+netbsd%mumble.net@localhost>]

The following reply was made to PR kern/45718; it has been noted by GNATS.

From: Taylor R Campbell <campbell+netbsd%mumble.net@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost,
        gnats-admin%netbsd.org@localhost, rmind%NetBSD.org@localhost
Subject: Re: kern/45718 (processes sometimes get stuck and spin in vm_map)
Date: Wed, 9 May 2012 00:28:25 +0000

 Caught another one, different stack trace this time.  Forgot to run
 `show uvm', sorry.
 
 crash> bt/t 0t24257
 trace: pid 24257 lid 1 at 0xfbd0d85c
 sleepq_block(64,0,c0c5fd9d,c0ce63d0,0,0,0,c08e40d3,0,0) at sleepq_block+0xda
 cv_timedwait(c0d291d0,c0d291cc,64,fbd0d928,0,ffffffff,ffffffff,0,801727,c9a=
 83200) at cv_timedwait+0x126
 uvm_map_prepare(c0d291c0,c0000000,3000,0,ffffffff,ffffffff,0,801727,fbd0d96=
 8,10) at uvm_map_prepare+0x167
 uvm_map(c0d291c0,fbd0d9f0,3000,0,ffffffff,ffffffff,0,801727,800001,0) at uv=
 m_map+0x78
 uvm_km_alloc(c0d291c0,3000,0,800001,c30ba6c0,1,fbd0da8c,c07e117a,c30ba6c0,1=
 ) at uvm_km_alloc+0xe6
 uarea_poolpage_alloc(c30ba6c0,1,fbd0da4c,c09548fd,0,0,0,0,0,0) at uarea_poo=
 lpage_alloc+0x41
 pool_grow(c30ba734,c07e1c4e,6,c0d7436c,6,0,c07e1b13,c30ba7bc,cce4fd20,c30ba=
 738) at pool_grow+0x2a
 pool_get(c30ba6c0,1,fbd0db2c,c056697e,0,1,28b8d000,5,21,0) at pool_get+0x79
 pool_cache_get_slow(0,1,0,c08de98e,0,0,1,3,fbd0dc7c,0) at pool_cache_get_sl=
 ow+0x19a
 pool_cache_get_paddr(c30ba6c0,1,0,0,fbd0dc40,cce4fd20,fbd0dc6c,c05619e5,0,1=
 ) at pool_cache_get_paddr+0x21c
 uvm_uarea_alloc(0,1,c6fde044,e9,0,0,ffffffff,3f8,cce4fd20,c4436a40) at uvm_=
 uarea_alloc+0x23
 fork1(cce4fd20,3,14,0,0,0,0,fbd0dd1c,0,106) at fork1+0x115
 sys___vfork14(cce4fd20,fbd0dcf4,fbd0dd1c,c08096f0,7d49f000,c0c8b800,cce4fd2=
 0,c838a350,0,8054095) at sys___vfork14+0x50
 syscall(fbd0dd48,b3,bbbb00ab,bfbf001f,806001f,0,0,bfbfe678,bb9102fc,bb9102f=
 c) at syscall+0x95