remi_zara@mac.com wrote:

> > I've just create a kernel with fixed trace command and 20070420
> > source tree, so could you try this one?
> > http://www.ceres.dti.ne.jp/~tsutsui/netbsd/netbsd-cobalt- 
> > tracefix-20070420.gz
> 
> It's up and running. Now I just have to wait for it to crash....

Well, (un)fortunately, the similar panic also happened on my RaQ2.

It got a TLB miss actually in a ksyms function during daily cron job
with a background job copying files from NFS to local wd0:

---
 :
colt-% tar clf - . | ( cd /usr/local/tmp ; tar xf - )
trap: TLB miss (load or instr. fetch) in kernel mode
status=0x3, cause=0x8008, epc=0x801d3fdc, vaddr=0x7fb7e63a
pid=1307 cmd=netstat usp=0x7fffd4b0 ksp=0xcc741c28
Stopped in pid 1307.1 (netstat) at      netbsd:ksyms_getname+0x318:     \
lb      v1,0(v0)
db> tr
ksyms_getname+318 (c0159a80,8039c835,c0112ffa,c0159a80) ra 801d4084 sz 16
ksyms_getname+3c0 (c0159a80,8039c835,c0112ffa,c0159a80) ra 0 sz 16
User-level: pid 1307.1
db> ps/w
 PID          COMMAND     EMUL  PRI UTIME STIME WAIT-MSG    WAIT-CHANNEL
 1270             awk   netbsd   14   0.4   0.4 pipe        0x8fc69ab0
>1307         netstat   netbsd   60   0.0   0.9
 1810           showq   netbsd   24   0.3   0.7 select      netbsd:selwait
 1709        postdrop   netbsd   24   0.2   0.7 netio       0x8ed4fa08
 894         sendmail   netbsd    8   0.3   0.7 pipe        0x8fc69b38
 864              tee   netbsd    8   0.3   0.6 pipe        0x8fc699a0
 1099              sh   netbsd   13   0.7   0.3 wait        0x8efcf238
 1241              sh   netbsd   10   0.5   0.5 wait        0x8efcf068
 1629            cron   netbsd    8   0.6   0.3 pipe        0x8fc69918
 1626             tar   netbsd   82 154.4 358.4
 1105             tar   netbsd   24  68.9 195.9 pipe        0x8fc69d58
 805           pickup   netbsd   24   0.6   0.6 select      netbsd:selwait
 829             tcsh   netbsd   27   1.2   0.9 pause       0x8fdf3000
 755            login   netbsd   10   0.8   0.6 wait        0x8fd19d08
 693             cron   netbsd    8   1.3   0.3 nanoslp     0x8f45bc40
 781            inetd   netbsd   24   0.1   0.8 kqread      0x8f8a7cb8
 443             qmgr   netbsd   24   0.5   0.9 select      netbsd:selwait
 826           master   netbsd   24   2.4   1.5 select      netbsd:selwait
 479             sshd   netbsd   24   6.7   0.5 select      netbsd:selwait
 441             ntpd   netbsd    8  13.7   6.7 pause       0x8f45b940
 305              amd   netbsd   24  23.4  10.8 select      netbsd:selwait
 276            nfsio   netbsd   32  21.0  21.0 nfsidl      netbsd:nfs_asyncdaemon+0x38
 268            nfsio   netbsd   32  43.9  43.9 nfsidl      netbsd:nfs_asyncdaemon+0x28
 270            nfsio   netbsd   32 242.2 242.2 nfsidl      netbsd:nfs_asyncdaemon+0x18
 272            nfsio   netbsd   32 305.9 305.9 nfsidl      netbsd:nfs_asyncdaemon+0x8
 266        mount_mfs   netbsd   32   0.0   0.4 mfsidl      0x8f85f1f8
 247           ypbind   netbsd   24  12.5  11.3 select      netbsd:selwait
 235          rpcbind   netbsd   24   0.6   0.5 poll        netbsd:selwait
 188          syslogd   netbsd   24   0.7   0.7
 30           physiod   netbsd   16   0.2   0.2 physiod     0xcbeb7048
 8           aiodoned   netbsd    4  64.5  64.5 aiodoned    0xcbeb7010
 7            ioflush   netbsd   40  21.4  21.4 syncer      netbsd:fpu_id+0x1a138
 6         pagedaemon   netbsd    4  55.3  55.3 pgdaemon    netbsd:uvm+0x14
 5          cryptoret   netbsd   36   0.2   0.2 crypto_wait netbsd:M_CRYPTO_DATA+0x34
 4            atabus1   netbsd   16   0.0   0.4 atath       0xc00f5bb0
 3            atabus0   netbsd   16   0.2   0.2 atath       0xc00f5a40
 2           scsibus0   netbsd   16   0.2   0.2 sccomp      0xc005b6bc
 1               init   netbsd   15   0.1   0.4 wait        0x8fdfbd00
 0            swapper   netbsd    4   0.5   0.5 schedule    netbsd:uvm+0x48
db> 

---

I'm not sure if this is cobalt specific or MI ksyms(4) problem,
but this kernel doen't contain symbols for local (static)
functions so I'll try to reproduce it on a debug kernel
(with src/sys/arch/mips/conf/Makefile.mips rev 1.46).
---
Izumi Tsutsui