On Mon, 15 Aug 2005, Julien Gabel wrote: > >> During the configuration phase, just after installing 6.0-BETA2 on a > >> notebook, i got the following message on the console: > >> > >> lock order reversal > >> 1st 0xc097b240 UMA lock (UMA lock) _at_ /usr/src/sys/vm/uma_core.c:1494 > >> 2nd 0xc1060144 system map (system map) _at_ /usr/src/sys/vm/vm_kern.c:295 > > > looks pretty much like > > http://sources.zabbadoz.net/freebsd/lor.html#110 > > As reported by Thierry Herbelot, the #109 appears on a UP and SMP system, > but the #110 seems to be SMP only (at least is only reproduced on a HTT > system with SMP kernel). > > When i got the second LOR, it was followed by a panic and a crash (three > times on four). It was during 'make buildworld' each time, with this > message: > > Memory modified after free 0xc2af2500(256) val=deadc0df _at_ 0xc2af2508 > panic: receive: m == 0 so->so_rcv.sb_cc == 4294967295 > cpuid = 0 > KDB: enter: panic > [thread pid 3908 tid 100152 ] > Stopped at kdb_enter+0x30: leave > db> > > I didn't have a crash dump yet, since it was during a post-installation > phase. I am currently running an UP kernel to avoid problem, but can > switch to a SMP one if somebody is interested. in case you get it a gain please type db> where so we'll know the code path where this happens. That might help or not. -- Bjoern A. Zeeb bzeeb at Zabbadoz dot NeTReceived on Mon Aug 15 2005 - 14:40:10 UTC
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