>Number:         10158
>Category:       kern
>Synopsis:       softdeps panic my machine
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri May 19 22:48:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Martin Husemann
>Release:        cvs update from May 6
>Organization:
>Environment:

System: NetBSD rumolt.teuto.de 1.4Y NetBSD 1.4Y (RUMOLT) #0: Sun May 7 17:10:35 MEST 2000 martin@rumolt.teuto.de:/usr/src/sys-i4b/arch/i386/compile/RUMOLT i386


>Description:

While I have softdeps turned on on several machines which are happy with
it, this machine locks up with it regularily. Always when I'm in X and
doing something, so I hooked up a serial debugger and got a backtrace.

I can reproduce this, but not fast (this time it took about a week,
last time without debugger setup yet it was only minutes).

If someone can tell me how to get a crash dump from the remote gdb,
I'll be able to get that and set it up on the net. If I need to 
examine something, please tell me.

Here is the backtrace:

Program received signal SIGTRAP, Trace/breakpoint trap.
kgdb_panic () at ../../../../arch/i386/i386/kgdb_machdep.c:244
244             if (verbose)
(gdb) bt
#0  kgdb_panic () at ../../../../arch/i386/i386/kgdb_machdep.c:244
#1  0xc0137719 in panic (
    fmt=0xc0296b80 "softdep_disk_write_complete: lock is held")
    at ../../../../kern/subr_prf.c:208
#2  0xc025f238 in softdep_disk_write_complete (bp=0xc4cdcf88)
    at ../../../../../gnu/sys/ufs/ffs/ffs_softdep.c:3069
#3  0xc014e4d7 in biodone (bp=0xc4cdcf88) at ../../../../kern/vfs_bio.c:954
#4  0xc01f754a in wddone (v=0xc075e000) at ../../../../dev/ata/wd.c:622
#5  0xc01fa2cf in wdc_ata_bio_done (chp=0xc075c4a0, xfer=0xc0761000)
    at ../../../../dev/ata/ata_wdc.c:656
#6  0xc01f9bb4 in wdc_ata_bio_intr (chp=0xc075c4a0, xfer=0xc0761000, irq=1)
    at ../../../../dev/ata/ata_wdc.c:597
#7  0xc0109a95 in wdcintr (arg=0xc075c4a0) at ../../../../dev/ic/wdc.c:693
#8  0xc0203e62 in pciide_compat_intr (arg=0xc075c4a0)
    at ../../../../dev/pci/pciide.c:651
#9  0xc01018c0 in Xintr14 ()
#10 0xc025c9bf in softdep_freefile (v=0xd219ceb4)
    at ../../../../../gnu/sys/ufs/ffs/ffs_softdep.c:1856
#11 0xc01c87c4 in ffs_vfree (v=0xd219ceb4)
    at ../../../../ufs/ffs/ffs_alloc.c:1481
#12 0xc01ce399 in ufs_inactive (v=0xd219cee0)
    at ../../../../sys/vnode_if.h:1005
#13 0xc0152dcb in vput (vp=0xd239cbc0) at ../../../../sys/vnode_if.h:717
#14 0xc025e777 in handle_workitem_remove (dirrem=0xc084bcc0)
    at ../../../../../gnu/sys/ufs/ffs/ffs_softdep.c:2683
#15 0xc025a150 in softdep_process_worklist (matchmnt=0x0)
    at ../../../../../gnu/sys/ufs/ffs/ffs_softdep.c:544
#16 0xc015d681 in sched_sync (v=0x0)
    at ../../../../miscfs/syncfs/sync_subr.c:192
#17 0xc010031b in proc_trampoline ()
#18 0xc02d9efc in ?? ()
Cannot access memory at address 0xf9000000.


>How-To-Repeat:

Do "make cleandir" or "cvs update" on this machine with softdeps
enabled

>Fix:

n/a
>Release-Note:
>Audit-Trail:
>Unformatted: