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Date:      Wed, 14 Apr 2004 13:50:08 +0400 (MSD)
From:      Dmitry Morozovsky <marck@rinet.ru>
To:        Scott Long <scottl@freebsd.org>
Cc:        freebsd-current@freebsd.org
Subject:   Hanged 20040413 -current SNAP [Was: "sleeping without a mutex"]
Message-ID:  <20040414134354.J45248@woozle.rinet.ru>
In-Reply-To: <40799196.7080200@freebsd.org>
References:  <20040410134802.J60704@woozle.rinet.ru> <20040410144803.BBB2340826@fw.farid-hajji.net> <20040410233958.S72270@woozle.rinet.ru> <20040411223354.B93412@woozle.rinet.ru> <40799196.7080200@freebsd.org>

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Colleagues,

after markm's commit current fixit no longer panics. However, trying to mount
FixitCD it just hangs. Console switcher works, but no more. Again, it's 100%
reproducible on three very different systems with ATAPI CD/DVD drives. I
managed to get ddb ps from hanged system:

cd9660: RockRidge Extension

[- here hang lies -]

Debugger("manual escape to debugger")
Stopped at      Debugger+0x46:  xchgl   %ebx,in_Debugger.0
db> ps
  pid   proc     uarea   uid  ppid  pgrp  flag   stat  wmesg    wchan  cmd
   62 c464d1b8 d762e000    0    61     1 0004002 [SLPQ block 0xc0875fa0][SLP] ldconfig
   61 c464d370 d762f000    0     1     1 0004002 [SLPQ wait 0xc464d370][SLP] sh
   56 c464d898 d7632000    0     0     0 0000204 [SLPQ - 0xc08b6b0c][SLP] nfsiod 3
   55 c464da50 d7633000    0     0     0 0000204 [SLPQ - 0xc08b6b08][SLP] nfsiod 2
   54 c464dc08 d7634000    0     0     0 0000204 [SLPQ - 0xc08b6b04][SLP] nfsiod 1
   53 c464ddc0 d7635000    0     0     0 0000204 [SLPQ - 0xc08b6b00][SLP] nfsiod 0
   52 c47b6000 df677000    0     0     0 0000204 [SLPQ vlruwt 0xc47b6000][SLP] vnlru
   51 c47b61b8 df678000    0     0     0 0000204 [SLPQ syncer 0xc0880044][SLP] syncer
   50 c47b6370 df679000    0     0     0 0000204 [SLPQ psleep 0xc08af830][SLP] bufdaemon
   49 c47b6528 df67a000    0     0     0 000020c [SLPQ pgzero 0xc08bd3a8][SLP] pagezero
   48 c47b66e0 df67b000    0     0     0 0000204 [SLPQ psleep 0xc08bd400][SLP] vmdaemon
   47 c47b6898 df6c4000    0     0     0 0000204 [SLPQ psleep 0xc08bd3ec][SLP] pagedaemon
    9 c45b2a50 d75fd000    0     0     0 0000204 [SLPQ mdwait 0xc47a2200][SLP] md0
   46 c45b2c08 d75fe000    0     0     0 0000204 [IWAIT] swi0: tty:sio
   45 c45b2dc0 d75ff000    0     0     0 0000204 [SLPQ tzpoll 0xc0e10070][SLP] acpi_thermal
    8 c464a000 d7600000    0     0     0 0000204 [SLPQ actask 0xc0e104cc][SLP] acpi_task2
    7 c464a1b8 d7601000    0     0     0 0000204 [SLPQ actask 0xc0e104cc][SLP] acpi_task1
    6 c464a370 d7602000    0     0     0 0000204 [SLPQ actask 0xc0e104cc][SLP] acpi_task0
   44 c464a528 d7603000    0     0     0 0000204 [IWAIT] swi3: cambio
   43 c464a6e0 d7604000    0     0     0 0000204 [IWAIT] swi2: camnet
   42 c464a898 d7605000    0     0     0 0000204 [IWAIT] swi5:+
   41 c464aa50 d7606000    0     0     0 0000204 [IWAIT] swi7: acpitaskq
    5 c464ac08 d762b000    0     0     0 0000204 [SLPQ - 0xc4640dc0][SLP] taskqueue
   40 c464adc0 d762c000    0     0     0 0000204 [IWAIT] swi6:+
   39 c464d000 d762d000    0     0     0 0000204 [IWAIT] swi7: task queue
   38 c45a3528 d75cd000    0     0     0 0000204 [SLPQ - 0xc0876060][SLP] yarrow
    4 c45a36e0 d75ce000    0     0     0 0000204 [SLPQ - 0xc087aa50][SLP] g_down
    3 c45a3898 d75cf000    0     0     0 0000204 [SLPQ - 0xc087aa4c][SLP] g_up
    2 c45a3a50 d75d0000    0     0     0 0000204 [SLPQ - 0xc087aa44][SLP] g_event
   37 c45a3c08 d75d1000    0     0     0 0000204 [IWAIT] swi1: net
   36 c45a3dc0 d75d2000    0     0     0 0000204 [IWAIT] swi4: vm
   35 c45b2000 d75d3000    0     0     0 000020c [RUNQ] swi8: tty:sio clock
   34 c45b21b8 d75f8000    0     0     0 0000204 [IWAIT] irq0: clk
   33 c45b2370 d75f9000    0     0     0 0000204 [IWAIT] irq23: vr0
   32 c45b2528 d75fa000    0     0     0 0000204 [IWAIT] irq22:
   31 c45b26e0 d75fb000    0     0     0 0000204 [IWAIT] irq21:
   30 c45b2898 d75fc000    0     0     0 0000204 [IWAIT] irq20:
   29 c1d241b8 d6486000    0     0     0 0000204 [IWAIT] irq19:
   28 c1d24370 d6487000    0     0     0 0000204 [IWAIT] irq18:
   27 c1d24528 d6488000    0     0     0 0000204 [IWAIT] irq17:
   26 c1d246e0 d6489000    0     0     0 0000204 [IWAIT] irq16:
   25 c1d24898 d64ae000    0     0     0 0000204 [IWAIT] irq15: ata1
   24 c1d24a50 d64af000    0     0     0 0000204 [IWAIT] irq14: ata0
   23 c1d24c08 d64b0000    0     0     0 0000204 [IWAIT] irq13:
   22 c1d24dc0 d64b1000    0     0     0 0000204 [IWAIT] irq12: psm0
   21 c45a3000 d75ca000    0     0     0 0000204 [IWAIT] irq11:
   20 c45a31b8 d75cb000    0     0     0 0000204 [IWAIT] irq10:
   19 c45a3370 d75cc000    0     0     0 0000204 [IWAIT] irq9: acpi0
   18 c1d1b000 d6434000    0     0     0 0000204 [IWAIT] irq8: rtc
   17 c1d1b1b8 d647d000    0     0     0 0000204 [IWAIT] irq7:
   16 c1d1b370 d647e000    0     0     0 0000204 [IWAIT] irq6: fdc0
   15 c1d1b528 d647f000    0     0     0 0000204 [IWAIT] irq5:
   14 c1d1b6e0 d6480000    0     0     0 0000204 [IWAIT] irq4: sio0
   13 c1d1b898 d6481000    0     0     0 0000204 [IWAIT] irq3:
   12 c1d1ba50 d6482000    0     0     0 0000204 [CPU 0] irq1: atkbd0
   11 c1d1bc08 d6483000    0     0     0 000020c [Can run] idle: cpu0
    1 c1d1bdc0 d6484000    0     0     1 0004202 [SLPQ wait 0xc1d1bdc0][SLP] sysinstall
   10 c1d24000 d6485000    0     0     0 0000204 [SLPQ ktrace 0xc087e2b8][SLP] ktrace
    0 c087ab40 c101f000    0     0     0 0000200 [SLPQ sched 0xc087ab40][SLP] swapper
db> panic
panic: from debugger
at line 453 in file /usr/src/sys/ddb/db_command.c
cpuid = 0;

syncing disks, buffers remaining... 33 33 33 33 33 33 33 33 33 33 33 33 33 33
33 33 33 33 33 33
giving up on 33 buffers
Uptime: 5m3s
Shutting down ACPI
Automatic reboot in 15 seconds - press a key on the console to abort

Any thoughts?

Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
------------------------------------------------------------------------
*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru ***
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