Date: Mon, 9 Dec 2002 14:32:36 +1100 From: Greg Lane <gregory.lane@anu.edu.au> To: freebsd-questions@freebsd.org Subject: Occasional panics under heavy disk load - dmesg/stack traces Message-ID: <20021209033236.GA465@nucl03.anu.edu.au>
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G'day everyone, Back in September I sent a message to hackers asking what people thought of the kernel panics I had started to get from around April on a somewhat random basis when my machine was under heavy disk load (buildworld, make clean of ports etc). It doesn't panic every time I hammer the disk, but only sometimes. This machine has tracked stable for over two years now. Its a fairly vanilla box from Gateway. I was lead towards a couple of PR's, both are still open. > > Can anyone tell me if this hardware or a real bug? Is there anything > > else I could supply which would help in understanding the problem? > take a look at http://www.freebsd.org/cgi/query-pr.cgi?pr=42277 and > http://www.freebsd.org/cgi/query-pr.cgi?pr=42235 One of the PR's pointed towards softupdates as a potential cause. I turned it off on /usr and have continued to get panics. Can anyone give me any clue as to what might be happening? Software / hardware / anything? I enclose the (hopefully relevant) dmesg output and two kernel stack traces, both from the last few days. Last built world on Nov 12th. I've had four or five crashes since then. Cheers, Greg =============================================== . FreeBSD 4.7-STABLE #1: Tue Nov 12 14:01:18 EST 2002 toor@nucl03.anu.edu.au:/usr/obj/usr/src/sys/NUCL03 . CPU: Pentium III/Pentium III Xeon/Celeron (730.95-MHz 686-class CPU) . real memory = 536739840 (524160K bytes) avail memory = 518774784 (506616K bytes) . pcib1: <Intel 82801BA/BAM (ICH2) PCI-PCI (AGP) bridge> at device 1.0 on pci0 pci1: <PCI bus> on pcib1 pci1: <VGA-compatible display device> at 0.0 irq 11 pcib2: <Intel 82801AA (ICH) Hub to PCI bridge> at device 30.0 on pci0 pci2: <PCI bus> on pcib2 ahc0: <Adaptec 2940 Ultra SCSI adapter> port 0xd800-0xd8ff mem 0xfeaff000-0xfeafffff irq 11 at device 7.0 on pci2 aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs vr0: <VIA VT3043 Rhine I 10/100BaseTX> port 0xdc00-0xdc7f mem 0xfeafec00-0xfeafec7f irq 5 at device 11.0 on pci2 vr0: Ethernet address: 00:80:c8:da:0b:69 miibus0: <MII bus> on vr0 amphy0: <DM9101 10/100 media interface> on miibus0 amphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto xl0: <3Com 3c905C-TX Fast Etherlink XL> port 0xd480-0xd4ff mem 0xfeafe800-0xfeafe87f irq 11 at device 15.0 on pci2 xl0: Ethernet address: 00:01:02:80:d0:e5 miibus1: <MII bus> on xl0 xlphy0: <3c905C 10/100 internal PHY> on miibus1 xlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto isab0: <Intel 82801AA (ICH) PCI to LPC bridge> at device 31.0 on pci0 isa0: <ISA bus> on isab0 atapci0: <Intel ICH ATA66 controller> port 0xffa0-0xffaf at device 31.1 on pci0 ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 pci0: <Intel 82801AA (ICH) USB controller> at 31.2 irq 9 pci0: <unknown card> (vendor=0x8086, dev=0x2413) at 31.3 irq 10 pcm0: <Intel 82801AA (ICH)> port 0xef00-0xef3f,0xe800-0xe8ff irq 10 at device 31.5 on pci0 orm0: <Option ROMs> at iomem 0xc0000-0xc7fff,0xc8000-0xcc7ff,0xd0000-0xd07ff on isa0 fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0 fdc0: FIFO enabled, 8 bytes threshold fd0: <1440-KB 3.5" drive> on fdc0 drive 0 . ad0: 14324MB <QUANTUM FIREBALLlct15 15> [29104/16/63] at ata0-master UDMA66 ad1: 78167MB <Maxtor 98196H8> [158816/16/63] at ata0-slave UDMA66 ad3: 117246MB <Maxtor 4G120J6> [238216/16/63] at ata1-slave UDMA66 acd0: CD-RW <LITE-ON LTR-40125S> at ata1-master PIO4 Waiting 15 seconds for SCSI devices to settle sa0 at ahc0 bus 0 target 3 lun 0 sa0: <EXABYTE EXB-8500-85Qanx0 0446> Removable Sequential Access SCSI-2 device sa0: 4.032MB/s transfers (4.032MHz, offset 11) Mounting root from ufs:/dev/ad0s1a cd0 at ata1 bus 0 target 0 lun 0 cd0: <LITE-ON LTR-40125S ZS0K> Removable CD-ROM SCSI-0 device cd0: 16.000MB/s transfers cd0: Attempt to query device size failed: NOT READY, Medium not present WARNING: / was not properly dismounted =============================================================== #0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487 487 if (dumping++) { (kgdb) where #0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487 #1 0xc017db63 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316 #2 0xc017dfa1 in panic (fmt=0xc02db420 "ffs_blkfree: freeing free frag") at /usr/src/sys/kern/kern_shutdown.c:595 #3 0xc0227fa7 in ffs_blkfree (ip=0xc1959c00, bno=32167, size=1024) at /usr/src/sys/ufs/ffs/ffs_alloc.c:1470 #4 0xc0229eeb in ffs_truncate (vp=0xd4b3d640, length=0, flags=0, cred=0x0, p=0xd4890920) at /usr/src/sys/ufs/ffs/ffs_inode.c:353 #5 0xc0233ce8 in ufs_inactive (ap=0xd4e96ea4) at /usr/src/sys/ufs/ufs/ufs_inode.c:89 #6 0xc0238fb5 in ufs_vnoperate (ap=0xd4e96ea4) at /usr/src/sys/ufs/ufs/ufs_vnops.c:2422 #7 0xc01ac78c in vput (vp=0xd4b3d640) at vnode_if.h:815 #8 0xc01afb19 in unlink (p=0xd4890920, uap=0xd4e96f80) at /usr/src/sys/kern/vfs_syscalls.c:1504 #9 0xc029cf61 in syscall2 (frame={tf_fs = 135135279, tf_es = -1078001617, tf_ds = -1078001617, tf_edi = 135719488, tf_esi = -1077943540, tf_ebp = -1077945748, tf_isp = -722898988, tf_ebx = 1209032940, tf_edx = -1, tf_ecx = 20, tf_eax = 10, tf_trapno = 0, tf_err = 2, tf_eip = 1208716840, tf_cs = 31, tf_eflags = 647, tf_esp = -1077945888, tf_ss = 47}) at /usr/src/sys/i386/i386/trap.c:1175 #10 0xc028daa5 in Xint0x80_syscall () #11 0x804c2a5 in ?? () #12 0x804c060 in ?? () #13 0x804a3f5 in ?? () #14 0x8049e93 in ?? () #15 0x8049c2d in ?? () #16 0x8049971 in ?? () =============================================================== #0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487 487 if (dumping++) { (kgdb) where #0 dumpsys () at /usr/src/sys/kern/kern_shutdown.c:487 #1 0xc017db63 in boot (howto=256) at /usr/src/sys/kern/kern_shutdown.c:316 #2 0xc017dfa1 in panic (fmt=0xc02decc0 "vm_page_free: freeing free page") at /usr/src/sys/kern/kern_shutdown.c:595 #3 0xc02439fe in vm_page_free_toq (m=0xc0a416fc) at /usr/src/sys/vm/vm_page.c:1090 #4 0xc024283b in vm_object_page_remove (object=0xd4469e40, start=0, end=133, clean_only=0) at /usr/src/sys/vm/vm_page.h:514 #5 0xc0247188 in vnode_pager_setsize (vp=0xd5041380, nsize=0) at /usr/src/sys/vm/vnode_pager.c:288 #6 0xc01abdac in vtruncbuf (vp=0xd5041380, cred=0x0, p=0xd443cbe0, length=0, blksize=8192) at /usr/src/sys/kern/vfs_subr.c:991 #7 0xc0229d3f in ffs_truncate (vp=0xd5041380, length=0, flags=0, cred=0x0, p=0xd443cbe0) at /usr/src/sys/ufs/ffs/ffs_inode.c:314 #8 0xc0233ce8 in ufs_inactive (ap=0xd4638ea4) at /usr/src/sys/ufs/ufs/ufs_inode.c:89 #9 0xc0238fb5 in ufs_vnoperate (ap=0xd4638ea4) at /usr/src/sys/ufs/ufs/ufs_vnops.c:2422 #10 0xc01ac78c in vput (vp=0xd5041380) at vnode_if.h:815 #11 0xc01afb19 in unlink (p=0xd443cbe0, uap=0xd4638f80) at /usr/src/sys/kern/vfs_syscalls.c:1504 #12 0xc029cf61 in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47, tf_edi = 1, tf_esi = 134717440, tf_ebp = -1077937444, tf_isp = -731672620, tf_ebx = 134770176, tf_edx = 134770256, tf_ecx = 0, tf_eax = 10, tf_trapno = 7, tf_err = 2, tf_eip = 134523396, tf_cs = 31, tf_eflags = 647, tf_esp = -1077937488, tf_ss = 47}) at /usr/src/sys/i386/i386/trap.c:1175 #13 0xc028daa5 in Xint0x80_syscall () #14 0x8048353 in ?? 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