Attachment 57497 Details for Bug 86767 – floppy-bug.txt

floppy-bug.txt

floppy-bug.txt (text/plain), 17.67 KB, created by Gilbert Healton on 2005-09-30 23:20:23 UTC

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Creator: Gilbert Healton

Created: 2005-09-30 23:20:23 UTC

Size: 17.67 KB

patch

obsolete

>
>Summary: FreeBSD4.11 produces bogus "slice starts beyond end of the disk: rejecting it" errors under USB/umass floppies. 4.9 did not.
>--------------------------------------------------------------------
>
> * Have searched GNATS database for anything close to this. 
>   Found nothing.
>
> * Marked serious as:
>
>    * problem in kernel I/O routines (official reason for serious).
>    * multiple people reporting messages. 
>      some can not mount floppies, or at least think they can't.
>    * reliability of floppy operations questionable, 
>      which can cause be expensive on even occasional 
>      failures to our application.
>
> * Floppies formatted with Windows XP, which puts error text in "s4",
>   a diagnostic for "s4" is also included.
>
> * Floppies formatted with FreeBSD's newfs_msdos command, which 
>   leaves s1-s4 zero, no mount errors occur though umount errors 
>   still occur.
>
>
>
>FIX REWARD:
>-----------------------------------------------------------------------
>
>Whoever I receive the best fix from by 2005-10-12 gets
>a free poster-size map of the Internet (not for sale anywhere....
>so don't ask if you don't send me a fix... no volume publishing
>facilities just a spin-off of something else).
>
>Offered for sure to USA residents. Other countries if,
>and after, passing additional legal checks and permissions.
>
>This map shows routes to all registered networks and not 
>individual hosts nor generic ISPs.  With over 180,000 networks 
>it has quite a lot on it. It will be more complex than those 
>shown at:
>
> sample:  http://www.lumeta.com/gallery/isp-ss.gif 
> details: http://www.lumeta.com/mapping.html
>
>
>Ideas:
>--------------------------------------------------------------------
>
>My first guess is that these are caused by the fact that non-system floppy disks have error message text at offset 0x1BE rather than a MSDOS partition table. Such a floppy dump follows. 
>
>My second guess involves someone adding SCSI/UFI code that cycles through MS-DOS partitions without first checking if the partition table exsists. 
>
>Perhaps some SCSI related code for reading MBRs without partition tables was deleted as "unused" even though it is required for umass/UFI floppies. Looking at bytes 15 and 12-14 should tell the kernel if it has a floppy or not.
>
>
>Suspect UMASS/SCSI/UFI specific code as straight "fd0" floppy drives do not generate this error.
>
>
>/var/log/messages boot log extract
>--------------------------------------------------------------------
>
>Sep 30 13:48:13 ghealton5 /kernel: da0 at umass-sim0 bus 0 target 0 lun 0
>Sep 30 13:48:13 ghealton5 /kernel: da0: <NEC USB UF000x 1.50> Removable Direct Access SCSI-0 device
>Sep 30 13:48:13 ghealton5 /kernel: da0: 20KB/s transfers
>Sep 30 13:48:13 ghealton5 /kernel: da0: Attempt to query device size failed: NOT READY, Medium not present
>
>dmesg log follows 
>--------------------------------------------------------------------
>
>Copyright (c) 1992-2005 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 4.11-RELEASE #0: Fri Jan 21 17:21:22 GMT 2005
>    root@perseus.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
>Timecounter "i8254"  frequency 1193182 Hz
>CPU: Intel(R) Pentium(R) M processor 2.00GHz (1995.01-MHz 686-class CPU)
>  Origin = "GenuineIntel"  Id = 0x6d8  Stepping = 8
>  Features=0xafe9fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,TM,PBE>
>real memory  = 1073549312 (1048388K bytes)
>avail memory = 1039441920 (1015080K bytes)
>Preloaded elf kernel "kernel" at 0xc055c000.
>Pentium Pro MTRR support enabled
>md0: Malloc disk
>Using $PIR table, 10 entries at 0xc00fb2c0
>npx0: <math processor> on motherboard
>npx0: INT 16 interface
>pcib0: <Host to PCI bridge> on motherboard
>pci0: <PCI bus> on pcib0
>pcib1: <PCI to PCI bridge (vendor=8086 device=2591)> irq 0 at device 1.0 on pci0
>pci1: <PCI bus> on pcib1
>pci1: <ATI model 5460 graphics accelerator> at 0.0 irq 11
>pcib2: <PCI to PCI bridge (vendor=8086 device=2660)> irq 0 at device 28.0 on pci0
>pci2: <PCI bus> on pcib2
>bge0: <Broadcom BCM5751 Gigabit Ethernet, ASIC rev. 0x4001> mem 0xdfcf0000-0xdfcfffff irq 11 at device 0.0 on pci2
>bge0: Ethernet address: 00:11:43:4d:b4:1c
>miibus0: <MII bus> on bge0
>brgphy0: <BCM5750 10/100/1000baseTX PHY> on miibus0
>brgphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX, 1000baseTX-FDX, auto
>uhci0: <UHCI (generic) USB controller> port 0xbf80-0xbf9f irq 11 at device 29.0 on pci0
>usb0: <UHCI (generic) 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
>uhci1: <UHCI (generic) USB controller> port 0xbf60-0xbf7f irq 10 at device 29.1 on pci0
>usb1: <UHCI (generic) USB controller> on uhci1
>usb1: USB revision 1.0
>uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
>uhub1: 2 ports with 2 removable, self powered
>uhci2: <UHCI (generic) USB controller> port 0xbf40-0xbf5f irq 9 at device 29.2 on pci0
>usb2: <UHCI (generic) USB controller> on uhci2
>usb2: USB revision 1.0
>uhub2: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
>uhub2: 2 ports with 2 removable, self powered
>umass0: NEC NEC USB UF000x, rev 1.10/1.50, addr 2
>uhci3: <UHCI (generic) USB controller> port 0xbf20-0xbf3f irq 7 at device 29.3 on pci0
>usb3: <UHCI (generic) USB controller> on uhci3
>usb3: USB revision 1.0
>uhub3: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
>uhub3: 2 ports with 2 removable, self powered
>pci0: <USB controller> at 29.7 irq 11
>pcib3: <PCI to PCI bridge (vendor=8086 device=2448)> at device 30.0 on pci0
>pci3: <PCI bus> on pcib3
>pcic0: <YENTA PCI-CardBus Bridge> irq 7 at device 1.0 on pci3
>pcic0: PCI Memory allocated: 0x88000000
>pccard0: <PC Card 16-bit bus (classic)> on pcic0
>pci3: <unknown card> (vendor=0x104c, dev=0x8038) at 1.5 irq 7
>pci3: <unknown card> (vendor=0x14e4, dev=0x4320) at 3.0 irq 10
>pci0: <unknown card> (vendor=0x8086, dev=0x266e) at 30.2 irq 11
>pci0: <unknown card> (vendor=0x8086, dev=0x266d) at 30.3 irq 10
>isab0: <PCI to ISA bridge (vendor=8086 device=2641)> at device 31.0 on pci0
>isa0: <ISA bus> on isab0
>atapci0: <Generic PCI ATA controller> port 0xbfa0-0xbfaf,0x374-0x377,0x170-0x177,0x3f4-0x3f7,0x1f0-0x1f7 irq 10 at device 31.2 on pci0
>ata0: at 0x1f0 irq 14 on atapci0
>ata1: at 0x170 irq 15 on atapci0
>pci0: <unknown card> (vendor=0x8086, dev=0x266a) at 31.3 irq 10
>orm0: <Option ROM> at iomem 0xc0000-0xcffff on isa0
>pmtimer0 on isa0
>fdc0: ready for input in output
>fdc0: cmd 3 failed at out byte 1 of 3
>atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
>atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
>kbd0 at atkbd0
>psm0: <PS/2 Mouse> irq 12 on atkbdc0
>psm0: model GlidePoint, device ID 0
>vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
>sc0: <System console> at flags 0x100 on isa0
>sc0: VGA <16 virtual consoles, flags=0x300>
>sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
>sio0: type 16550A
>sio1: configured irq 3 not in bitmap of probed irqs 0
>ppc0: parallel port not found.
>ad0: 57231MB <TOSHIBA MK6026GAX> [116280/16/63] at ata0-master BIOSDMA
>acd0: DVD-ROM <HL-DT-STDVD-ROM GDR8082N> at ata1-master PIO4
>Mounting root from ufs:/dev/ad0s1a
>da0 at umass-sim0 bus 0 target 0 lun 0
>da0: <NEC USB UF000x 1.50> Removable Direct Access SCSI-0 device 
>da0: 20KB/s transfers
>da0: Attempt to query device size failed: NOT READY, Medium not present
>
>Working Notes:
>--------------------------------------------------------------------
>
>
>MBR details follow from http://bootmaster.filerecovery.biz/appnote4.html
>
>    00-02: JMP (EB + byte-address) instruction then NOP (90)
>    03-0A: OEM name & DOS version
>    0B-0C: bytes per sector (usually 512 0x200)
>       0D: sectors per cluster (must be power of 2)
>    0E-0F: reserved sectors (boot sectors - usually 1)
>       10: FAT copies (usually 2)
>    11-12: max root directory entries (usually 512)  192 (0xe0) here.
>    13-14: total sectors if partition <= 32M, else 0. 
>       15: media description byte ( from
>		http://www.win.tue.nl/~aeb/linux/fs/fat/fat-1.html )
>	    For 8" floppies:
>	    fc, fd, fe - Various interesting formats
>
>	    For 5.25" floppies:
>	    Value  DOS version  Capacity  sides  tracks  sectors/track
>	    ff     1.1           320 KB    2      40      8
>	    fe     1.0           160 KB    1      40      8
>	    fd     2.0           360 KB    2      40      9
>	    fc     2.0           180 KB    1      40      9
>	    fb                   640 KB    2      80      8
>	    fa                   320 KB    1      80      8
>	    f9     3.0          1200 KB    2      80     15
>
>	    For 3.5" floppies:
>	    Value  DOS version  Capacity  sides  tracks  sectors/track
>	    fb                   640 KB    2      80      8
>	    fa                   320 KB    1      80      8
>	    f9     3.2           720 KB    2      80      9
>	    f0     3.3          1440 KB    2      80     18
>	    f0                  2880 KB    2      80     36
>
>	    For RAMdisks:
>	    fa
>    16-17: Sectors-per-fat
>    18-19: Sectors-per-track
>    1A-1E: number of heads
>    1C-1F: hidden sectors (if partitions <= 32M, only 2-bytes: see 13-14)
>
>  Additional words exist for MSDOS 4.0 and beyond, which non-system floppies
>  do not seem to use, escept for the signature in the last two bytes.
>
>  Samples of several styles of formatting follow:
>
>  --- preformatted.floppy ---
>
>        .0.1 .2.3  .4.5 .6.7  .8.9 .A.B  .C.D .E.F     0123456789ABCDEF
>        ---- ----  ---- ----  ---- ----  ---- ----     ----------------
>  0000:	eb34 9049  424d 2020  332e 3300  0201 0100    /.4.IBM  3.3...../
>  0010:	02e0 0040  0bf0 0900  1200 0200  0000 0000    /...@............/
>  0020:	0000 0000  0000 0000  0000 0000  0000 0012    /................/
>  0030:	0000 0000  0100 fa33  c08e d0bc  007c 1607    /.......3.....|../
>  0040:	bb78 0036  c537 1e56  1653 bf2b  7cb9 0b00    /.x.6.7.V.S.+|.../
>  0050:	fcac 2680  3d00 7403  268a 05aa  8ac4 e2f1    /..&.=.t.&......./
>  0060:	061f 8947  02c7 072b  7cfb cd13  7267 a010    /...G...+|...rg../
>  0070:	7c98 f726  167c 0306  1c7c 0306  0e7c a33f    /|..&.|...|...|.?/
>  0080:	7ca3 377c  b820 00f7  2611 7c8b  1e0b 7c03    /|.7|. ..&.|...|./
>  0090:	c348 f7f3  0106 377c  bb00 05a1  3f7c e89f    /.H....7|....?|../
>  00a0:	00b8 0102  e8b3 0072  198b fbb9  0b00 bed6    /.......r......../
>  00b0:	7df3 a675  0d8d 7f20  bee1 7db9  0b00 f3a6    /}..u... ..}...../
>  00c0:	7418 be77  7de8 6a00  32e4 cd16  5e1f 8f04    /t..w}.j.2...^.../
>  00d0:	8f44 02cd  19be c07d  ebeb a11c  0533 d2f7    /.D.....}.....3../
>  00e0:	360b 7cfe  c0a2 3c7c  a137 7ca3  3d7c bb00    /6.|...<|.7|.=|../
>  00f0:	07a1 377c  e849 00a1  187c 2a06  3b7c 4038    /..7|.I...|*.;|@8/
>  0100:	063c 7c73  03a0 3c7c  50e8 4e00  5872 c628    /.<|s..<|P.N.Xr.(/
>  0110:	063c 7c74  0c01 0637  7cf7 260b  7c03 d8eb    /.<|t...7|.&.|.../
>  0120:	d08a 2e15  7c8a 16fd  7d8b 1e3d  7cea 0000    /....|...}..=|.../
>  0130:	7000 ac0a  c074 22b4  0ebb 0700  cd10 ebf2    /p....t"........./
>  0140:	33d2 f736  187c fec2  8816 3b7c  33d2 f736    /3..6.|....;|3..6/
>  0150:	1a7c 8816  2a7c a339  7cc3 b402  8b16 397c    /.|..*|.9|.....9|/
>  0160:	b106 d2e6  0a36 3b7c  8bca 86e9  8a16 fd7d    /.....6;|.......}/
>  0170:	8a36 2a7c  cd13 c30d  0a4e 6f6e  2d53 7973    /.6*|.....Non-Sys/
>  0180:	7465 6d20  6469 736b  206f 7220  6469 736b    /tem disk or disk/
>  0190:	2065 7272  6f72 0d0a  5265 706c  6163 6520    / error..Replace /
>  01a0:	616e 6420  7374 7269  6b65 2061  6e79 206b    /and strike any k/
>  01b0:	6579 2077  6865 6e20  7265 6164  790d 0a00    /ey when ready.../
>  01c0:	0d0a 4469  736b 2042  6f6f 7420  6661 696c    /..Disk Boot fail/
>  01d0:	7572 650d  0a00 4942  4d42 494f  2020 434f    /ure...IBMBIO  CO/
>  01e0:	4d49 424d  444f 5320  2043 4f4d  0000 0000    /MIBMDOS  COM..../
>  01f0:	0000 0000  0000 0000  0000 0000  0000 55aa    /..............U./
>
>
>  --- xp-formatted.floppy ---
>
>        .0.1 .2.3  .4.5 .6.7  .8.9 .A.B  .C.D .E.F     0123456789ABCDEF
>        ---- ----  ---- ----  ---- ----  ---- ----     ----------------
>  0000:	eb3c 904d  5344 4f53  352e 3000  0201 0100    /.<.MSDOS5.0...../
>  0010:	02e0 0040  0bf0 0900  1200 0200  0000 0000    /...@............/
>  0020:	0000 0000  0000 292c  ef5e e84e  4f20 4e41    /......),.^.NO NA/
>  0030:	4d45 2020  2020 4641  5431 3220  2020 33c9    /ME    FAT12   3./
>  0040:	8ed1 bcf0  7b8e d9b8  0020 8ec0  fcbd 007c    /....{.... .....|/
>  0050:	384e 247d  248b c199  e83c 0172  1c83 eb3a    /8N$}$....<.r...:/
>  0060:	66a1 1c7c  2666 3b07  268a 57fc  7506 80ca    /f..|&f;.&.W.u.../
>  0070:	0288 5602  80c3 1073  eb33 c98a  4610 98f7    /..V....s.3..F.../
>  0080:	6616 0346  1c13 561e  0346 0e13  d18b 7611    /f..F..V..F....v./
>  0090:	6089 46fc  8956 feb8  2000 f7e6  8b5e 0b03    /`.F..V.. ....^../
>  00a0:	c348 f7f3  0146 fc11  4efe 61bf  0000 e8e6    /.H...F..N.a...../
>  00b0:	0072 3926  382d 7417  60b1 0bbe  a17d f3a6    /.r9&8-t.`....}../
>  00c0:	6174 324e  7409 83c7  203b fb72  e6eb dca0    /at2Nt... ;.r..../
>  00d0:	fb7d b47d  8bf0 ac98  4074 0c48  7413 b40e    /.}.}....@t.Ht.../
>  00e0:	bb07 00cd  10eb efa0  fd7d ebe6  a0fc 7deb    /.........}....}./
>  00f0:	e1cd 16cd  1926 8b55  1a52 b001  bb00 00e8    /.....&.U.R....../
>  0100:	3b00 72e8  5b8a 5624  be0b 7c8b  fcc7 46f0    /;.r.[.V$..|...F./
>  0110:	3d7d c746  f429 7d8c  d989 4ef2  894e f6c6    /=}.F.)}...N..N../
>  0120:	0696 7dcb  ea03 0000  200f b6c8  668b 46f8    /..}..... ...f.F./
>  0130:	6603 461c  668b d066  c1ea 10eb  5e0f b6c8    /f.F.f..f....^.../
>  0140:	4a4a 8a46  0d32 e4f7  e203 46fc  1356 feeb    /JJ.F.2....F..V../
>  0150:	4a52 5006  536a 016a  1091 8b46  1896 9233    /JRP.Sj.j...F...3/
>  0160:	d2f7 f691  f7f6 4287  caf7 761a  8af2 8ae8    /......B...v...../
>  0170:	c0cc 020a  ccb8 0102  807e 020e  7504 b442    /.........~..u..B/
>  0180:	8bf4 8a56  24cd 1361  6172 0b40  7501 4203    /...V$..aar.@u.B./
>  0190:	5e0b 4975  06f8 c341  bb00 0060  666a 00eb    /^.Iu...A...`fj../
>  01a0:	b04e 544c  4452 2020  2020 2020  0d0a 5265    /.NTLDR      ..Re/
>  01b0:	6d6f 7665  2064 6973  6b73 206f  7220 6f74    /move disks or ot/
>  01c0:	6865 7220  6d65 6469  612e ff0d  0a44 6973    /her media....Dis/
>  01d0:	6b20 6572  726f 72ff  0d0a 5072  6573 7320    /k error...Press /
>  01e0:	616e 7920  6b65 7920  746f 2072  6573 7461    /any key to resta/
>  01f0:	7274 0d0a  0000 0000  0000 00ac  cbd8 55aa    /rt............U./
>
>
>  --- newfs_msdos.floppy ---
>
>        .0.1 .2.3  .4.5 .6.7  .8.9 .A.B  .C.D .E.F     0123456789ABCDEF
>        ---- ----  ---- ----  ---- ----  ---- ----     ----------------
>  0000:	eb3c 9042  5344 2020  342e 3400  0208 0100    /.<.BSD  4.4...../
>  0010:	0200 0240  0bf0 0200  3200 7300  0000 0000    /...@....2.s...../
>  0020:	0000 0000  0000 29e6  1318 894e  4f20 4e41    /......)....NO NA/
>  0030:	4d45 2020  2020 4641  5431 3220  2020 fa31    /ME    FAT12   .1/
>  0040:	c08e d0bc  007c fb8e  d8e8 0000  5e83 c619    /.....|......^.../
>  0050:	bb07 00fc  ac84 c074  06b4 0ecd  10eb f530    /.......t.......0/
>  0060:	e4cd 16cd  190d 0a4e  6f6e 2d73  7973 7465    /.......Non-syste/
>  0070:	6d20 6469  736b 0d0a  5072 6573  7320 616e    /m disk..Press an/
>  0080:	7920 6b65  7920 746f  2072 6562  6f6f 740d    /y key to reboot./
>  0090:	0a00 0000  0000 0000  0000 0000  0000 0000    /................/
>  00a0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  00b0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  00c0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  00d0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  00e0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  00f0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  0100:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  0110:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  0120:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  0130:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  0140:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  0150:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  0160:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  0170:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  0180:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  0190:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  01a0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  01b0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  01c0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  01d0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  01e0:	0000 0000  0000 0000  0000 0000  0000 0000    /................/
>  01f0:	0000 0000  0000 0000  0000 0000  0000 55aa    /..............U./
>
>
>
>More Notes:
>--------------------------------------------------------------------
>
>Errors produced by code present in both FreeBSD4.9 and FreeBSD4.11:
>
>	/usr/src/sys/kern/subr_diskmbr.c 
>
>    da0s2: slice starts beyond end of the disk: rejecting it
>
> 	/usr/src/sys/dev/usb/umass.c
>    umass0: Unsupported UFI command 0x35
>
>	/usr/src/cam/scsi/scsi_da.c
>    (da0:umass-sim0:0:0:0): Synchronize cache failed, status == 0x6, scsi status == 0x0
>
>
>Terms:
>
>( umass -> UFI )
>
>
>Traces:
>
> sys/cam/scsi/scsi_all.c   scsi_print_inquiry() seems to print (near bottom):
>      da0: <NEC USB UF000x 1.50> Removable Direct Access SCSI-0 device 
>
> kern/subr_diskmbr.c
>
>    mbr_setslice()
>	printf( "%s: slice starts beyond end of the disk: rejecting it\n", 
>
>
>     +++likely called from:
>
>    dsinit()
>	Reads DOS partition table. suspect should not be called if floppy.
>
>
>     +++likely called from:
>
>  kern/subr_diskslice.c
>
>      dsopen(dev, mode, flags, sspp, lp)
>	called on inactive unit to make it active
>	DSO_ONESLICE in flags must NOT be set to call dsopen().
>
>	cam/scsi/scsi_cd.c cdregister() seems to be only place that 
>	sets DSO_ONESLICE.

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Attachments on bug 86767: 57497 | 57498 | 57499