Synopsis: panic: uvm_lwp_fork: uvm_fault_wire failed: 14

State-Changed-From-To: feedback->open
State-Changed-By: tls@netbsd.org
State-Changed-When: Wed, 16 Nov 2005 04:11:09 +0000
State-Changed-Why:
Unfortunately, though this patch fixes the panic, now we're seeing the
patched systems hang with what seems to be a race-for-the-last-page or
race-to-lock-root type bug.  Here's sample "ps" output from one of
the systems in that state:

db{0}> ps
^M PID           PPID     PGRP        UID S   FLAGS LWPS          COMMAND    WAIT
^M 22389          502      502          0 2       0    1            inetd kvakern
^M 1685           502      502          0 2       0    1            inetd kvakern
^M 17583          502      502          0 2       0    1            inetd kvakern
^M 14803          502      502          0 2       0    1            inetd kvakern
^M 20644          502      502          0 2       0    1            inetd kvakern
^M 22757          502      502          0 2       0    1            inetd kvakern
^M 12391          502      502          0 2       0    1            inetd kvakern
^M 17042          443      443          0 2   0x100    1         sendmail  vnlock
^M 20286          443      443          0 2   0x100    1         sendmail  vnlock
^M 12331          443      443          0 2   0x100    1         sendmail  vnlock
^M 14516          407    14516          0 2 0x100000    1             sshd  vnlock

^M 8995           443      443          0 2   0x100    1         sendmail  vnlock
^M 206            443      443          0 2   0x100    1         sendmail  vnlock
^M 12816          443      443          0 2   0x100    1         sendmail  vnlock
^M 10978          443      443          0 2   0x100    1         sendmail ufs_has
^M 7183         25262     8798          0 2  0x4000    1             find kvakern
^M 832           8798     8798         17 2  0x4100    1         sendmail  piperd
^M 22377         8798     8798          0 2  0x4000    1              tee  piperd
^M 25262         8798     8798          0 2  0x4000    1               sh    wait
^M 8798          9050     8798          0 2  0x4000    1               sh    wait
^M 9050           511      511          0 2       0    1             cron  piperd
^M 472              1      472          0 2 0x104002    1            getty kvakern

^M 511              1      511          0 2       0    1             cron ufs_has
^M 502              1      502          0 2       0    1            inetd  kqread
^M 443              1      443          0 2   0x100    1         sendmail kvakern
^M 407              1      407          0 2       0    1             sshd  vnlock
^M 398              1      398         15 2   0x100    1             ntpd ufs_has
^M 217              1      217         14 2   0x500    3            named       *
^M 186              1      186          0 2       0    1          syslogd  kqread
^M 11               0        0          0 2 0x20200    1         aiodoned aiodone
^M 10               0        0          0 2 0x20200    1          ioflush  syncer
^M 9                0        0          0 2 0x20200    1       pagedaemon pgdaemo
^M 8                0        0          0 2 0x20200    1          raidio0 raidiow
^M 7                0        0          0 2 0x20200    1            raid0 rfwcond
^M 6                0        0          0 2 0x20200    1          atabus3   atath
^M 5                0        0          0 2 0x20200    1          atabus2   atath
^M 4                0        0          0 2 0x20200    1          atabus1   atath
^M 3                0        0          0 2 0x20200    1          atabus0   atath
^M 2                0        0          0 2 0x20200    1        cryptoret crypto_
^M 1                0        1          0 2  0x4000    1             init    wait
^M 0               -1        0          0 2 0x20200    1          swapper schedul
^Mdb{0}>  sync