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Date: Tue, 30 Jan 1996 00:35:25 +0200 (EET)
From: Heikki Suonsivu <hsu@clinet.fi>
Reply-To: hsu@clinet.fi
To: FreeBSD-gnats-submit@freebsd.org
Subject: Three deadlocks in row
X-Send-Pr-Version: 3.2

>Number:         978
>Category:       kern
>Synopsis:       Three deadlocks in row
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    se
>State:          closed
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Jan 29 14:40:04 PST 1996
>Closed-Date:    Sat Nov 9 21:07:53 PST 1996
>Last-Modified:  Sat Nov  9 21:08:17 PST 1996
>Originator:     Heikki Suonsivu
>Release:        FreeBSD 2.2-CURRENT i386
>Organization:
Clinet, Espoo, Finland
>Environment:
	
Jan 29 22:55:09 katiska /kernel: FreeBSD 2.2-CURRENT #7: Mon Jan  8 04:58:16 EET 1996
Jan 29 22:55:09 katiska /kernel:     hsu@katiska.clinet.fi:/usr/current/src/sys/compile/CLINETSERVER
Jan 29 22:55:09 katiska /kernel: CPU: Pentium (90.19-MHz 586-class CPU)
Jan 29 22:55:09 katiska /kernel:   Origin = "GenuineIntel"  Id = 0x524  Stepping=4
Jan 29 22:55:12 katiska /kernel:   Features=0x1bf<FPU,VME,PSE,MCE,CX8,APIC>
Jan 29 22:55:12 katiska /kernel: real memory  = 67108864 (65536K bytes)
Jan 29 22:55:12 katiska /kernel: avail memory = 63537152 (62048K bytes)
Jan 29 22:55:12 katiska /kernel: DEVFS: ready for devices
Jan 29 22:55:13 katiska /kernel: Probing for devices on the PCI bus:
Jan 29 22:55:13 katiska /kernel: chip0 <Intel 82434NX (Neptune) PCI cache memory controller> rev 17 on pci0:0
Jan 29 22:55:13 katiska /kernel: chip1 <Intel 82378IB PCI-ISA bridge> rev 67 on pci0:2
Jan 29 22:55:13 katiska /kernel: de0 <Digital DC21040 Ethernet> rev 35 int a irq 11 on pci0:6
Jan 29 22:55:13 katiska /kernel: de0: DC21040 [10Mb/s] pass 2.3 Ethernet address 00:c0:95:ec:47:a3
Jan 29 22:55:13 katiska /kernel: de0: enabling Thinwire/AUI port
Jan 29 22:55:13 katiska /kernel: ncr0 <ncr 53c810 scsi> rev 2 int a irq 9 on pci0:12
Jan 29 22:55:13 katiska /kernel: ncr0 waiting for scsi devices to settle
Jan 29 22:55:13 katiska /kernel: (ncr0:0:0): "SEAGATE ST15230N 0298" type 0 fixed SCSI 2
Jan 29 22:55:13 katiska /kernel: sd0(ncr0:0:0): Direct-Access 
Jan 29 22:55:13 katiska /kernel: sd0(ncr0:0:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
Jan 29 22:55:13 katiska /kernel: 4095MB (8386733 512 byte sectors)
Jan 29 22:55:13 katiska /kernel: sd0(ncr0:0:0): with 3992 cyls, 19 heads, and an average 110 sectors/track
Jan 29 22:55:13 katiska /kernel: (ncr0:3:0): "SEAGATE ST31200N 9348" type 0 fixed SCSI 2
Jan 29 22:55:13 katiska /kernel: sd3(ncr0:3:0): Direct-Access 
Jan 29 22:55:13 katiska /kernel: sd3(ncr0:3:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
Jan 29 22:55:13 katiska /kernel: 1011MB (2072435 512 byte sectors)
Jan 29 22:55:13 katiska /kernel: sd3(ncr0:3:0): with 2700 cyls, 9 heads, and an average 85 sectors/track
Jan 29 22:55:13 katiska /kernel: (ncr0:4:0): "HP C1533A 9503" type 1 removable SCSI 2
Jan 29 22:55:13 katiska /kernel: st4(ncr0:4:0): Sequential-Access 
Jan 29 22:55:14 katiska /kernel: st4(ncr0:4:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
Jan 29 22:55:14 katiska /kernel: density code 0x24, 512-byte blocks, write-enabled
Jan 29 22:55:14 katiska /kernel: ncr1 <ncr 53c810 scsi> rev 1 int a irq 9 on pci0:14
Jan 29 22:55:14 katiska /kernel: ncr1 waiting for scsi devices to settle
Jan 29 22:55:14 katiska /kernel: (ncr1:1:0): "SEAGATE ST15230N 0638" type 0 fixed SCSI 2
Jan 29 22:55:14 katiska /kernel: sd7(ncr1:1:0): Direct-Access 
Jan 29 22:55:14 katiska /kernel: sd7(ncr1:1:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
Jan 29 22:55:14 katiska /kernel: 4095MB (8386733 512 byte sectors)
Jan 29 22:55:14 katiska /kernel: sd7(ncr1:1:0): with 3992 cyls, 19 heads, and an average 110 sectors/track
Jan 29 22:55:14 katiska /kernel: (ncr1:2:0): "SEAGATE ST15230N 0638" type 0 fixed SCSI 2
Jan 29 22:55:14 katiska /kernel: sd8(ncr1:2:0): Direct-Access 
Jan 29 22:55:14 katiska /kernel: sd8(ncr1:2:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8.
Jan 29 22:55:14 katiska /kernel: 4095MB (8386733 512 byte sectors)
Jan 29 22:55:14 katiska /kernel: sd8(ncr1:2:0): with 3992 cyls, 19 heads, and an average 110 sectors/track
Jan 29 22:55:14 katiska /kernel: Probing for devices on the ISA bus:
Jan 29 22:55:14 katiska /kernel: vt0 at 0x60-0x6f irq 1 on motherboard
Jan 29 22:55:14 katiska /kernel: vt0: generic, 80/132 col, mono, 8 scr, mf2-kbd, [R3.20-b24]
Jan 29 22:55:15 katiska /kernel: ed0 not found at 0x280
Jan 29 22:55:15 katiska /kernel: lpt0 at 0x378-0x37f irq 7 on isa
Jan 29 22:55:15 katiska /kernel: lpt0: Interrupt-driven port
Jan 29 22:55:15 katiska /kernel: lp0: TCP/IP capable interface
Jan 29 22:55:15 katiska /kernel: lpt1 not found at 0xffffffff
Jan 29 22:55:15 katiska /kernel: sio0 at 0x3f8-0x3ff irq 4 on isa
Jan 29 22:55:15 katiska /kernel: sio0: type 16550A
Jan 29 22:55:15 katiska /kernel: sio1 at 0x2f8-0x2ff irq 3 on isa
Jan 29 22:55:15 katiska /kernel: sio1: type 16550A
Jan 29 22:55:15 katiska /kernel: pca0 on motherboard
Jan 29 22:55:15 katiska /kernel: pca0: PC speaker audio driver
Jan 29 22:55:15 katiska /kernel: cy0 not found
Jan 29 22:55:15 katiska /kernel: bt0 not found at 0x330
Jan 29 22:55:15 katiska /kernel: aha0 not found at 0x330
Jan 29 22:55:15 katiska /kernel: wdc0 not found at 0x1f0
Jan 29 22:55:15 katiska /kernel: fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
Jan 29 22:55:15 katiska /kernel: fdc0: NEC 72065B
Jan 29 22:55:15 katiska /kernel: fd0: 1.44MB 3.5in
Jan 29 22:55:15 katiska /kernel: matcdc0 not found at 0x230
Jan 29 22:55:15 katiska /kernel: npx0 on motherboard
Jan 29 22:55:15 katiska /kernel: npx0: INT 16 interface
Jan 29 22:55:16 katiska /kernel: changing root device to sd0a
Jan 29 22:55:16 katiska /kernel: devfs ready to run
Jan 29 22:55:16 katiska /kernel: new masks: bio c0000240, tty c003089a, net c003089a
Jan 29 22:55:16 katiska /kernel: WARNING: / was not properly dismounted.

>Description:

	The machine deadlocks so that
	- Trying to log in from console allows me to type "root", but after
	pressing return the tty locks up
	- Network and NFS still work
	- Any network connections lock up as soon as they do *any*
	filesystem (?) I/O.
	- This happened today three times in row
	- I has happened before, but not this frequently
	- There is nothing special on console
	- It apparently happens on very loaded systems only

>How-To-Repeat:

	I wish I knew.  It could be some program waking it up, as it
	happened this often today.  I don't know what program that would
	be, there are 50 users logged in typical.  innd and apache are the
	biggest hogs.

	I can't put kernel debugger in this machine, as I need it to reboot
	after a panic, but I guess it would be very useful to somehow to
	get it panic by force to get a crash dump, so that when it
	deadlocks, I could provide more information about the problem.

>Fix:
	
>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: freebsd-bugs->se 
Responsible-Changed-By: scrappy 
Responsible-Changed-When: Wed Apr 17 16:47:17 PDT 1996 
Responsible-Changed-Why:  
pci/ncr related? 
State-Changed-From-To: open->closed 
State-Changed-By: scrappy 
State-Changed-When: Sat Nov 9 21:07:53 PST 1996 
State-Changed-Why:  

Originator Confirmed Closure 
>Unformatted:
