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Date:      Thu, 10 Oct 2002 17:55:17 -0400 (EDT)
From:      Robert Watson <rwatson@freebsd.org>
To:        Ben Stuyts <ben@stuyts.nl>
Cc:        current@freebsd.org
Subject:   Re: Again: panic kmem_malloc()
Message-ID:  <Pine.NEB.3.96L.1021010175350.39392C-100000@fledge.watson.org>
In-Reply-To: <4.3.2.7.2.20021010213050.03645dd0@terminus>

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I've run into this on a couple of boxes, but those boxes were diskless
root boxes, and used md backed ffs for /tmp and /var.  Apparently if you
do that, you're likely to exceed the kernel's auto-tuned kmem map size.
That said, they didn't do it as frequently, so perhaps there's been a
chance.  A glance at the malloc buckets on the machine suggested that this
wasn't a memory leak (the normal candidate in this sort of scenario).

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert@fledge.watson.org      Network Associates Laboratories

On Thu, 10 Oct 2002, Ben Stuyts wrote:

> Hi,
> 
> A couple of days ago I reported a panic, which I just got again:
> 
> panic: kmem_malloc(4096): kmem_map too small: 28246016 total allocated.
> 
> I don't know where to start looking for this, so I'd appreciate some help. 
> This is on a lightly loaded server. I've pasted the dmesg below. Latest 
> cvsup is oct 5.
> 
> Thanks,
> Ben
> 
> Copyright (c) 1992-2002 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>          The Regents of the University of California. All rights reserved.
> FreeBSD 5.0-CURRENT #5: Sun Oct  6 01:50:54 CEST 2002
>      root@terminus.stuyts.nl:/var/obj/usr/src/sys/TERMINUS
> Preloaded elf kernel "/boot/kernel/kernel" at 0xc04dc000.
> Timecounter "i8254"  frequency 1193182 Hz
> Timecounter "TSC"  frequency 233864867 Hz
> CPU: Pentium II/Pentium II Xeon/Celeron (233.86-MHz 686-class CPU)
>    Origin = "GenuineIntel"  Id = 0x634  Stepping = 4
>    Features=0x80f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,MMX>
> real memory  = 67108864 (65536K bytes)
> avail memory = 59920384 (58516K bytes)
> Pentium Pro MTRR support enabled
> npx0: <math processor> on motherboard
> npx0: INT 16 interface
> Using $PIR table, 6 entries at 0xc00fdc00
> pcib0: <Intel 82443LX (440 LX) host to PCI bridge> at pcibus 0 on motherboard
> pci0: <PCI bus> on pcib0
> pcib1: <PCIBIOS PCI-PCI bridge> at device 1.0 on pci0
> pci1: <PCI bus> on pcib1
> isab0: <PCI-ISA bridge> at device 7.0 on pci0
> isa0: <ISA bus> on isab0
> atapci0: <Intel PIIX4 ATA33 controller> port 0xf000-0xf00f at device 7.1 on 
> pci0
> atapci0: Busmastering DMA not supported
> ata0: at 0x1f0 irq 14 on atapci0
> ata1: at 0x170 irq 15 on atapci0
> uhci0: <Intel 82371AB/EB (PIIX4) USB controller> port 0x6400-0x641f irq 11 
> at device 7.2 on pci0
> usb0: <Intel 82371AB/EB (PIIX4) USB controller> on uhci0
> usb0: USB revision 1.0
> uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
> uhub0: 2 ports with 2 removable, self powered
> pci0: <bridge, PCI-unknown> at device 7.3 (no driver attached)
> sym0: <875> port 0x6800-0x68ff mem 
> 0xe8000000-0xe8000fff,0xe8001000-0xe80010ff irq 12 at device 11.0 on pci0
> sym0: Symbios NVRAM, ID 7, Fast-20, SE, parity checking
> sym0: open drain IRQ line driver, using on-chip SRAM
> sym0: using LOAD/STORE-based firmware.
> xl0: <3Com 3c905-TX Fast Etherlink XL> port 0x6c00-0x6c3f irq 9 at device 
> 13.0 on pci0
> /usr/src/sys/vm/uma_core.c:1307: could sleep with "xl0" locked from 
> /usr/src/sys/pci/if_xl.c:1264
> /usr/src/sys/vm/uma_core.c:1307: could sleep with "xl0" locked from 
> /usr/src/sys/pci/if_xl.c:1264
> lock order reversal
>   1st 0xc0ba1bd4 xl0 (network driver) @ /usr/src/sys/pci/if_xl.c:1264
>   2nd 0xc03d2b00 allproc (allproc) @ /usr/src/sys/kern/kern_fork.c:318
> /usr/src/sys/vm/uma_core.c:1307: could sleep with "xl0" locked from 
> /usr/src/sys/pci/if_xl.c:1264
> /usr/src/sys/vm/uma_core.c:1307: could sleep with "xl0" locked from 
> /usr/src/sys/pci/if_xl.c:1264
> /usr/src/sys/vm/uma_core.c:1307: could sleep with "xl0" locked from 
> /usr/src/sys/pci/if_xl.c:1264
> xl0: Ethernet address: 00:60:08:a5:d4:ff
> miibus0: <MII bus> on xl0
> nsphy0: <DP83840 10/100 media interface> on miibus0
> nsphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
> /usr/src/sys/vm/uma_core.c:1307: could sleep with "xl0" locked from 
> /usr/src/sys/pci/if_xl.c:647
> pci0: <display, VGA> at device 15.0 (no driver attached)
> orm0: <Option ROMs> at iomem 0xc8000-0xcbfff,0xc0000-0xc7fff on isa0
> atkbdc0: <Keyboard controller (i8042)> at port 0x64,0x60 on isa0
> atkbd0: <AT Keyboard> irq 1 on atkbdc0
> kbd0 at atkbd0
> fdc0: <enhanced floppy controller (i82077, NE72065 or clone)> at port 
> 0x3f7,0x3f0-0x3f5 irq 6 drq 2 on isa0
> fdc0: FIFO enabled, 8 bytes threshold
> fd0: <1440-KB 3.5" drive> on fdc0 drive 0
> ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
> ppc0: Generic chipset (EPP/NIBBLE) in COMPATIBLE mode
> lpt0: <Printer> on ppbus0
> lpt0: Interrupt-driven port
> sc0: <System console> on isa0
> sc0: VGA <16 virtual consoles, flags=0x200>
> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
> sio0: type 16550A
> sio1 at port 0x2f8-0x2ff irq 3 on isa0
> sio1: type 16550A
> vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
> unknown: <PNP0303> can't assign resources (port)
> unknown: <PNP0501> can't assign resources (port)
> unknown: <PNP0700> can't assign resources (port)
> unknown: <PNP0400> can't assign resources (port)
> unknown: <PNP0501> can't assign resources (port)
> Timecounters tick every 10.000 msec
> ipfw2 initialized, divert enabled, rule-based forwarding enabled, default 
> to deny, logging unlimited
> Waiting 5 seconds for SCSI devices to settle
> (noperiph:sym0:0:-1:-1): SCSI BUS reset delivered.
> Mounting root from ufs:/dev/da0s1a
> da2 at sym0 bus 0 target 3 lun 0
> da2: <QUANTUM FIREBALL_TM3200S 300N> Fixed Direct Access SCSI-2 device
> da2: 20.000MB/s transfers (20.000MHz, offset 15), Tagged Queueing Enabled
> da2: 3067MB (6281856 512 byte sectors: 255H 63S/T 391C)
> da1 at sym0 bus 0 target 2 lun 0
> da1: <QUANTUM FIREBALL ST3.2S 0F0C> Fixed Direct Access SCSI-2 device
> da1: 20.000MB/s transfers (20.000MHz, offset 15), Tagged Queueing Enabled
> da1: 3090MB (6328861 512 byte sectors: 255H 63S/T 393C)
> da0 at sym0 bus 0 target 1 lun 0
> da0: <IBM DCAS-34330W S61A> Fixed Direct Access SCSI-2 device
> da0: 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
> da0: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C)
> WARNING: / was not properly dismounted
> cd0 at sym0 bus 0 target 4 lun 0
> cd0: <PLEXTOR CD-ROM PX-32TS 1.03> Removable CD-ROM SCSI-2 device
> cd0: 20.000MB/s transfers (20.000MHz, offset 15)
> cd0: Attempt to query device size failed: NOT READY, Medium not present
> WARNING: /usr was not properly dismounted
> WARNING: /var was not properly dismounted
> /var: mount pending error: blocks 2 files 1
> /var: superblock summary recomputed
> acquiring duplicate lock of same type: "inp"
>   1st inp @ /usr/src/sys/netinet/udp_usrreq.c:288
>   2nd inp @ /usr/src/sys/netinet/udp_usrreq.c:288
> 
> 
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