Date: Sun, 3 Mar 1996 09:44:34 -0600 From: Rich Murphey <rich@rich.isdn.bcm.tmc.edu> To: stable@freebsd.org Cc: imb@scgt.oz.au Subject: Re: panic: inconsistent empty queue Message-ID: <199603031544.JAA03265@richb.isdn.bcm.tmc.edu> In-Reply-To: <199603030944.UAA00329@asstdc.scgt.oz.au> (message from michael butler on Sun, 3 Mar 1996 20:44:53 %2B1100 (EST))
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|From: michael butler <imb@scgt.oz.au>
|On a recently compiled -stable, I'm seeing either processes hanging with
|"getnewbuf" or a "panic: inconsistent empty queue". Usually after running X
|and netscape. There's 60+ meg of swap on this machine and 32 meg of RAM so I
|don't have any explanations .. anyone ?
I'm seeing similar panics on -stable. Reverting to an
older kernel eliminates them for this system and
another similar system (486/eisa).
I've built a kernel with -g, DDB and DODUMP. If anyone
has suggestions as to what to look for with the
debugger or what to try, I'd apprecate any tips. I can
also give anyone who is interested access to this
machine. Rich
ahb2: board not responding
Debugger ("aha1742")
Stopped at Debugger+0x2b: ...
db>c
panic: biodone: buffer no busy
Stopped at Debugger+0x2b: ...
db> call diediedie
...
(no debugging symbols found)...
IdlePTD 20f000
current pcb at 1e31ac
panic: biodone: buffer not busy
#0 0xf019a663 in boot ()
(kgdb) where
#0 0xf019a663 in boot ()
#1 0xf01180d5 in panic ()
#2 0xf019a419 in diediedie ()
#3 0xf010142a in db_fncall ()
#4 0xf010115e in db_command ()
#5 0xf01012dd in db_command_loop ()
#6 0xf0103c78 in db_trap ()
#7 0xf019774a in kdb_trap ()
#8 0xf019f280 in trap ()
#9 0xf0197fb1 in calltrap ()
#10 0xf01180cf in panic ()
#11 0xf012ab55 in biodone ()
#12 0xf0171364 in scsi_done ()
#13 0xf0194a31 in ahb_done ()
#14 0xf01948c2 in ahbintr ()
#15 0xf019901d in Xresume11 ()
#16 0xf010bcf0 in softclock ()
#17 0xf01993cc in splz_swi ()
#18 0xf0174c50 in scsi_strategy ()
#19 0xf0174dcc in sdstrategy ()
#20 0xf01377ec in spec_strategy ()
#21 0xf01849f6 in ufs_strategy ()
#22 0xf012912e in bread ()
#23 0xf017da20 in ffs_read ()
#24 0xf01844fd in ufs_readdir ()
#25 0xf01320ba in getdirentries ()
#26 0xf019fcef in syscall ()
#27 0xf0197ffb in Xsyscall ()
#28 0x803d3bd in ?? ()
#29 0x803ce1b in ?? ()
#30 0x17cf in ?? ()
#31 0x3623 in ?? ()
#32 0x10e8 in ?? ()
(kgdb)
panic: getnewbuf: inconsistent AGE queue, qindex = 2.
Debugger ("panic")
Stopped at Debugger+0x2b: ...
db> call diediedie
...
IdlePTD 20f000
current pcb at 1e31ac
panic: getnewbuf: inconsistent AGE queue, qindex=%d
#0 0xf019a663 in boot ()
(kgdb) where
#0 0xf019a663 in boot ()
#1 0xf01180d5 in panic ()
#2 0xf0129c49 in getnewbuf ()
#3 0xf012a1be in getblk ()
#4 0xf017ab5d in ffs_balloc ()
#5 0xf017dde5 in ffs_write ()
#6 0xf0132aff in vn_write ()
#7 0xf011959f in write ()
#8 0xf019fcef in syscall ()
#9 0xf0197ffb in Xsyscall ()
#10 0x1b16 in ?? ()
#11 0x18cd in ?? ()
#12 0x10e8 in ?? ()
(kgdb)
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