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Date:      Sat, 29 Sep 2001 01:38:18 -0700
From:      Marcel Moolenaar <marcel@xcllnt.net>
To:        current@FreeBSD.org
Subject:   panic: blockable sleep lock (sx) ...
Message-ID:  <20010929013818.A407@athlon.pn.xcllnt.net>

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Gang,

I was running the Linux Test Project's (ltp) regression suite to see
how our Linuxulator was doing. It looks like we can use that to test
our kernel as well. :-)

IdlePTD 4292608
initial pcb at 3077c0
panicstr: bremfree: bp 0xc69541a8 not locked
panic messages:
---
panic: blockable sleep lock (sx) allproc @ /nfs/5.x/src/sys/kern/kern_proc.c:212

syncing disks... panic: bremfree: bp 0xc69541a8 not locked
Uptime: 3h46m47s

dumping to dev ad0s3b, offset 1572992
[snip]

(kgdb) bt
#0  0xc01bc316 in dumpsys ()
#1  0xc01bc103 in boot ()
#2  0xc01bc529 in panic ()
#3  0xc01e96c9 in bremfree ()
#4  0xc0194d49 in spec_fsync ()
#5  0xc0194889 in spec_vnoperate ()
#6  0xc02337fd in ffs_sync ()
#7  0xc01f5c01 in sync ()
#8  0xc01bbd4c in boot ()
#9  0xc01bc529 in panic ()
#10 0xc01d2582 in witness_lock ()
#11 0xc01c0555 in _sx_slock ()
#12 0xc01b76d0 in pfind ()
#13 0xc01d5cc9 in selwakeup ()
#14 0xc01df5a7 in ptcwakeup ()
#15 0xc01df582 in ptsstart ()
#16 0xc01dcc60 in ttstart ()
#17 0xc01de08d in tputchar ()
#18 0xc01cf037 in putchar ()
#19 0xc01cf29e in kvprintf ()
#20 0xc01cef64 in printf ()
#21 0xc026b095 in trap ()
#22 0xc01b62b7 in _mtx_lock_sleep ()
#23 0xc01b5f45 in _mtx_lock_flags ()
#24 0xc01c4594 in realitexpire ()
#25 0xc01c49fa in softclock ()
#26 0xc01aff5e in ithread_loop ()
#27 0xc01af43c in fork_exit ()

-- 
 Marcel Moolenaar	  USPA: A-39004		 marcel@xcllnt.net

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