Subject: kern/32490: panic in VOP_STRATEGY
To: None <kern-bug-people@netbsd.org, gnats-admin@netbsd.org,>
From: None <dheeraj@ece.gatech.edu>
List: netbsd-bugs
Date: 01/10/2006 03:15:01
>Number:         32490
>Category:       kern
>Synopsis:       panic in VOP_STRATEGY
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 10 03:15:00 +0000 2006
>Originator:     Dheeraj Reddy
>Release:        NetBSD-current
>Organization:
GT
>Environment:
NetBSD vagisha 3.99.15 NetBSD 3.99.15 (VAGISHA) #0: Mon Jan  9 10:24:11 EST 2006  root@vagisha:/home/src/sys/arch/i386/compile/VAGISHA i386
>Description:
If I am transferring large files over the network.. i seem to
sporadically get this panic and in to ddb>

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This GDB was configured as "i386--netbsdelf"...(no debugging symbols found)...
(gdb) target kcore /var/crash/netbsd.1.core
#0  0x00000000 in ?? ()
(gdb) bt
#0  0x00000000 in ?? ()
#1  0xc04b6000 in ?? ()
#2  0xc029dfcd in cpu_reboot ()
#3  0xc017782d in db_reboot_cmd ()
#4  0xc0177373 in db_command ()
#5  0xc0177082 in db_command_loop ()
#6  0xc017a1a8 in db_trap ()
#7  0xc029b7ce in kdb_trap ()
#8  0xc02a5a63 in trap ()
#9  0xc0102ca7 in calltrap ()
#10 0xc02affa9 in wdstrategy ()
#11 0xc026f665 in spec_strategy ()
#12 0xc026a108 in VOP_STRATEGY ()
#13 0xc025a57f in bwrite ()
#14 0xc02699fd in VOP_BWRITE ()
#15 0xc01d9166 in softdep_fsync_mountdev ()
#16 0xc01df34e in ffs_full_fsync ()
#17 0xc01ded50 in ffs_fsync ()
#18 0xc0269dbc in VOP_FSYNC ()
#19 0xc026fd23 in sched_sync ()

>How-To-Repeat:
enable both the BUFQ_READPRIO, BUFQ_PRIOSCAN options in the kernel

I shall try to make a debug kernel and get a more detailed trace.



>Fix:
Unknown as yet.