Re: More MP problems.

[Adam K Kirchhoff <adamk@xxxxxxxxxxxx>]

Matthew Dillon <dillon@xxxxxxxxxxxxxxxxxxxx> wrote:
>     I've committed it.  It's a hack but I need to move on.  I'm not 100%
>     certain this will fix all the issues permanently but if the problem
>     pops up again we will at least know where to look.

Well something certainly popped up :-)  My machine was up all night
without problems, building a few ports.  Just this morning, while
building more ports, this happened:

Fatal trap 12: page fault while in kernel mode
mp_lock = 00000001; cpuid = 1; lapic.id = 01000000
fault virtual address   = 0x20
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc01f584c
stack pointer           = 0x10:0xdbc8cd4c
frame pointer           = 0x10:0xdbc8cd54
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled,
resume, IOPL = 0
current process         = Idle
current thread          = pri 12 
interrupt mask          =  <- SMP: XXX
kernel: type 12 trap, code=0

CPU1 stopping CPUs: 0x0000000d
 stopped
Stopped at      tcp_disconnect+0x8:     movl  0x20(%ebx),%
db> trace
tcp_disconnect(0,deda6b04,ff808000,dbc8cd78,c01aa6f7) at
tcp_disconnect+0x8
tcp_usr_detach(db0d48a0) at tcp_usr_detach+0x1e
netmsg_pru_detach(deda6b04) at netmsg_pru_detach+0xf
tcpmsg_service_loop(0,0,0,0,0) at tcpmsg_service_loop+0x26
lwkt_exit() at lwkt_exit
db> reset