Re: panic: Memory modified after free

On Fri, Jun 24, 2005 at 07:04:31PM +0200, Thierry Herbelot wrote:
> Le Friday 24 June 2005 18:44, Peter Holm a écrit :
> > On Fri, Jun 24, 2005 at 04:26:55PM +0200, Thierry Herbelot wrote:
> > > This is with an SMP machine (oldish BP6)
> >
> > It seems as thou I got the same one:
> >
> [SNIP details]
> 
> seems so, indeed
> (I got my panic while rebuilding the world with a "make -j2 buildworld" over 
> an ssh connection)
> 
> 	TfH

Hmmm ... here's a different one after a few minutes of stress testing:

panic: Memory modified after free 0xc24d8800(256) val=c2442600 _at_ 0xc24d8800

cpuid = 0
KDB: enter: panic
[thread pid 51 tid 100046 ]
Stopped at      kdb_enter+0x2b: nop
db> where
Tracing pid 51 tid 100046 td 0xc1575d80
kdb_enter(c0852679) at kdb_enter+0x2b
panic(c086d47e,c24d8800,100,c2442600,c24d8800) at panic+0x14b
trash_ctor(c24d8800,100,0,0,cc9bec38) at trash_ctor+0x2f
trash_fini(c24d8800,100) at trash_fini+0x12
zone_drain(c104a9a0) at zone_drain+0x170
zone_foreach(c077b828,cc9becec,c078d2cf,...) at zone_foreach+0x37
uma_reclaim(c1575d80,cc9bec74,0,c0956c40,cc9bec80) at uma_reclaim+0x12
vm_pageout_scan(0,c09ab960,0,c086f231,5c3) at vm_pageout_scan+0x107
vm_pageout(0,cc9bed38,0,c078e088,0) at vm_pageout+0x2c3
fork_exit(c078e088,0,cc9bed38) at fork_exit+0xa0

Details at http://www.holm.cc/stress/log/cons137.html
-- 
Peter Holm