Re: kern/45677: The stress_killer test sometimes does

[Andreas Gustafsson <gson%gson.org@localhost>]

The following reply was made to PR kern/45677; it has been noted by GNATS.

From: Andreas Gustafsson <gson%gson.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/45677: The stress_killer test sometimes does
Date: Sat, 11 Feb 2012 01:13:28 +0200

 More similar crashes:
 
   http://releng.netbsd.org/b5reports/i386/build/2012.02.10.09.17.49/test.log
   http://releng.netbsd.org/b5reports/i386/build/2012.02.03.22.18.05/test.log
   http://releng.netbsd.org/b5reports/i386/build/2012.02.10.09.17.49/test.log
   http://www.gson.org/netbsd/bugs/build/build/2012.02.05.17.34.34/test.log
 
 A couple of these happened while running the stress_long test
 rather than stress_killer one, but it looks like the same bug.
 As before, the panic message varies, but the pool_* functions
 are always involved.
 
 I managed to get a crash dump from the last crash in the list above.
 The last console messages from that one were:
 
       stress_long: panic: pool_get: pool '(null)': pr_itemsperpage is zero, 
pool not initialized?
   cpu0: Begin traceback...
   
printf_nolog(c0c21b9c,0,c43b788c,c08d42a6,3f,c1044f64,c43b78dc,c08d2464,c0d46ae0,0)
 at netbsd:printf_nolog
   pool_get(c0d09480,2,c0c629a8,c06adf1b,0,c0cf3740,4,c06addc5,6,c43b78d8) at 
netbsd:pool_get+0x535
   
pool_cache_put_slow(6,c0cfab70,c43b793c,c06ab3c8,4000000,0,0,1c84000,c10c0000,0)
 at netbsd:pool_cache_put_slow+0x1c2
   
pool_cache_put_paddr(c0d00240,c11bc000,ffffffff,c07c84df,98,0,c43b7a6c,c0d1d1a0,c134adc4,c43b7a30)
 at netbsd:pool_cache_put_paddr+0x107
   
kmem_intr_free(c11bc000,2000,c43b7bd4,c10c9b40,bff04254,16d5103,0,c153a000,c0cf3740,0)
 at netbsd:kmem_intr_free+0x6f
   
ufs_readdir(c43b7a98,2000,1001,c43b7ab0,c12be01c,2000,c43b7abc,c07c845e,c12be008,c0b7c760)
 at netbsd:ufs_readdir+0x35f
   
VOP_READDIR(c134adc4,c43b7bd4,c10c9b40,c43b7bf8,0,0,c43b7b2c,c08c1b03,c11e8004,bbb2d000)
 at netbsd:VOP_READDIR+0x44
   getcwd_common(c12be008,c11a66e0,c43b7c70,c1459400,200,1,c153a000,1,5,0) at 
netbsd:getcwd_common+0x3ad
   
sys___getcwd(c153a000,c43b7cf4,c43b7d1c,0,c06ab5ae,c11e9754,c43b0010,c15e3400,c06ab5ae,c43b7cf8)
 at netbsd:sys___getcwd+0xaa
   
syscall(c43b7d48,bbba00b3,ab,bfbf001f,bbba001f,bfbfebc0,bfbfe756,bfbfe728,bbbab598,bfbfe756)
 at netbsd:syscall+0xad
   cpu0: End traceback...
 
 In case anyone would like to poke around in the crash dump,
 it can be downloaded as part of hard disk image from
 
   http://www.gson.org/netbsd/bugs/45677/wd0.img
 
 The image can then be booted in qemu:
 
   qemu -snapshot -nographic -hda wd0.img
 
 Then log in as root (no password) and type
 
   cd /var/crash
   gunzip netbsd*
   gdb netbsd.0
   target kvm netbsd.0.core
   where
 
 No debug symbols, unfortunately.
 -- 
 Andreas Gustafsson, gson%gson.org@localhost