> After upgrading to the latest snapshot there seems to be something wrong > with the msdos filesystem driver. When I copy a binary file on a msdos > (fat32) mounted partition the content changes e.g.:
I seem to get similar results. It is consistent at char 4097 with every test. # mount /dev/sd2i /mnt # cd /mnt # dd if=/dev/random count=128 | tee foo | sha256 128+0 records in 128+0 records out 65536 bytes transferred in 0.013 secs (4751396 bytes/sec) 32eeb6ea5ae66c9773e44b711cedb6406f6b7bfc4820a7ba67bc15cdb57bb3a9 # cp foo bar # sha256 foo bar SHA256 (foo) = 32eeb6ea5ae66c9773e44b711cedb6406f6b7bfc4820a7ba67bc15cdb57bb3a9 SHA256 (bar) = fbc95c92049953e6708e75dd5f0c9914737765baf4dc718aa37cc78bedcdbb3a # cmp foo bar foo bar differ: char 4097, line 19 # cd # umount /mnt # mount /dev/sd2i /mnt # cd /mnt # sha256 foo bar SHA256 (foo) = fbc95c92049953e6708e75dd5f0c9914737765baf4dc718aa37cc78bedcdbb3a SHA256 (bar) = fbc95c92049953e6708e75dd5f0c9914737765baf4dc718aa37cc78bedcdbb3a # fdisk sd2 Disk: sd2 geometry: 976/255/63 [15679488 Sectors] Offset: 0 Signature: 0xAA55 Starting Ending LBA Info: #: id C H S - C H S [ start: size ] ------------------------------------------------------------------------------- 0: 0B 0 1 2 - 976 0 48 [ 64: 15679424 ] FAT32 1: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused # fsck /dev/sd2i ** /dev/rsd2i ** Phase 1 - Read and Compare FATs ** Phase 2 - Check Cluster Chains ** Phase 3 - Check Directories ** Phase 4 - Check for Lost Files 3 files, 3629976 free (1956070 clusters) OpenBSD 6.1-current (GENERIC.MP) #3: Mon Jun 12 09:43:26 MDT 2017 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 3672182784 (3502MB) avail mem = 3555098624 (3390MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.7 @ 0xec100 (47 entries) bios0: vendor American Megatrends Inc. version "1501" date 04/01/2016 bios0: ASUS All Series acpi0 at bios0: rev 2 acpi0: sleep states S0 S3 S4 S5 acpi0: tables DSDT FACP APIC FPDT MCFG HPET MSDM BGRT SSDT SSDT CRAT SSDT acpi0: wakeup devices RLAN(S4) UASM(S4) SBAZ(S4) PS2K(S4) UAR1(S4) OHC1(S4) EHC1(S4) OHC2(S4) EHC2(S4) OHC3(S4) EHC3(S4) XHC0(S4) PX16(S4) GPP0(S4) GPP1(S4) acpitimer0 at acpi0: 3579545 Hz, 32 bits acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: AMD Athlon(tm) 5150 APU with Radeon(tm) R3, 1597.22 MHz cpu0: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,TOPEXT,ITSC,BMI1 cpu0: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 2MB 64b/line 16-way L2 cache cpu0: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative cpu0: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative cpu0: TSC frequency 1597224470 Hz cpu0: smt 0, core 0, package 0 mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges cpu0: apic clock running at 99MHz cpu0: mwait min=64, max=64, IBE cpu1 at mainbus0: apid 1 (application processor) cpu1: AMD Athlon(tm) 5150 APU with Radeon(tm) R3, 1597.01 MHz cpu1: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,TOPEXT,ITSC,BMI1 cpu1: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 2MB 64b/line 16-way L2 cache cpu1: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative cpu1: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative cpu1: smt 0, core 1, package 0 cpu2 at mainbus0: apid 2 (application processor) cpu2: AMD Athlon(tm) 5150 APU with Radeon(tm) R3, 1597.01 MHz cpu2: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,TOPEXT,ITSC,BMI1 cpu2: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 2MB 64b/line 16-way L2 cache cpu2: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative cpu2: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative cpu2: smt 0, core 2, package 0 cpu3 at mainbus0: apid 3 (application processor) cpu3: AMD Athlon(tm) 5150 APU with Radeon(tm) R3, 1597.02 MHz cpu3: FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,PCLMUL,MWAIT,SSSE3,CX16,SSE4.1,SSE4.2,MOVBE,POPCNT,AES,XSAVE,AVX,F16C,NXE,MMXX,FFXSR,PAGE1GB,RDTSCP,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,OSVW,IBS,SKINIT,TOPEXT,ITSC,BMI1 cpu3: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 2MB 64b/line 16-way L2 cache cpu3: ITLB 32 4KB entries fully associative, 8 4MB entries fully associative cpu3: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative cpu3: smt 0, core 3, package 0 ioapic0 at mainbus0: apid 5 pa 0xfec00000, version 21, 24 pins ioapic1 at mainbus0: apid 6 pa 0xfec01000, version 21, 32 pins acpimcfg0 at acpi0 addr 0xe0000000, bus 0-255 acpihpet0 at acpi0: 14318180 Hz acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 1 (GPP2) acpiprt2 at acpi0: bus 2 (GPP3) acpiprt3 at acpi0: bus -1 (PX16) acpiprt4 at acpi0: bus -1 (GPP0) acpiprt5 at acpi0: bus -1 (GPP1) acpicpu0 at acpi0: C2(0@400 io@0x414), C1(@1 halt!), PSS acpicpu1 at acpi0: C2(0@400 io@0x414), C1(@1 halt!), PSS acpicpu2 at acpi0: C2(0@400 io@0x414), C1(@1 halt!), PSS acpicpu3 at acpi0: C2(0@400 io@0x414), C1(@1 halt!), PSS "PNP0400" at acpi0 not configured "MSFT0001" at acpi0 not configured "PNP0501" at acpi0 not configured acpibtn0 at acpi0: PWRB "PNP0C14" at acpi0 not configured cpu0: 1597 MHz: speeds: 1600 1400 1200 1000 800 MHz pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "AMD AMD64 16h Host" rev 0x00 vga1 at pci0 dev 1 function 0 vendor "ATI", unknown product 0x9830 rev 0x00 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) azalia0 at pci0 dev 1 function 1 "ATI Radeon HD Audio" rev 0x00: msi azalia0: no supported codecs pchb1 at pci0 dev 2 function 0 vendor "AMD", unknown product 0x1538 rev 0x00 ppb0 at pci0 dev 2 function 4 "AMD AMD64 16h PCIE" rev 0x00: msi pci1 at ppb0 bus 1 re0 at pci1 dev 0 function 0 "Realtek 8168" rev 0x11: RTL8168G/8111G (0x4c00), msi, address 9c:5c:8e:95:58:30 rgephy0 at re0 phy 7: RTL8251 PHY, rev. 0 ppb1 at pci0 dev 2 function 5 "AMD AMD64 16h PCIE" rev 0x00: msi pci2 at ppb1 bus 2 xhci0 at pci2 dev 0 function 0 "ASMedia ASM1042A xHCI" rev 0x00: msi usb0 at xhci0: USB revision 3.0 uhub0 at usb0 configuration 1 interface 0 "ASMedia xHCI root hub" rev 3.00/1.00 addr 1 xhci1 at pci0 dev 16 function 0 "AMD Bolton xHCI" rev 0x01: msi usb1 at xhci1: USB revision 3.0 uhub1 at usb1 configuration 1 interface 0 "AMD xHCI root hub" rev 3.00/1.00 addr 1 ahci0 at pci0 dev 17 function 0 "AMD Hudson-2 SATA" rev 0x40: msi, AHCI 1.3 ahci0: port 0: 6.0Gb/s scsibus1 at ahci0: 32 targets sd0 at scsibus1 targ 0 lun 0: <ATA, WDC WD10EZEX-00W, 01.0> SCSI3 0/direct fixed naa.50014ee2b7c65957 sd0: 953869MB, 512 bytes/sector, 1953525168 sectors ohci0 at pci0 dev 18 function 0 "AMD Hudson-2 USB" rev 0x39: apic 5 int 18, version 1.0, legacy support ehci0 at pci0 dev 18 function 2 "AMD Hudson-2 USB2" rev 0x39: apic 5 int 17 usb2 at ehci0: USB revision 2.0 uhub2 at usb2 configuration 1 interface 0 "AMD EHCI root hub" rev 2.00/1.00 addr 1 ohci1 at pci0 dev 19 function 0 "AMD Hudson-2 USB" rev 0x39: apic 5 int 18, version 1.0, legacy support ehci1 at pci0 dev 19 function 2 "AMD Hudson-2 USB2" rev 0x39: apic 5 int 17 usb3 at ehci1: USB revision 2.0 uhub3 at usb3 configuration 1 interface 0 "AMD EHCI root hub" rev 2.00/1.00 addr 1 piixpm0 at pci0 dev 20 function 0 "AMD Hudson-2 SMBus" rev 0x3a: polling iic0 at piixpm0 iic0: addr 0x20 00=16 01=01 04=2a 06=2a 08=2a 0a=0f 0b=0e 0c=03 0d=38 0f=44 10=44 13=58 20=16 21=01 22=11 24=2a 26=2a 28=2a 2a=0f 2b=0e 2c=03 2d=38 2f=44 32=58 40=1e 41=10 42=97 43=b0 45=04 46=01 47=02 48=05 50=0f 51=07 52=55 53=f0 60=36 61=24 words 00=1602 01=0100 02=0000 03=0054 04=2a00 05=0054 06=2a00 07=0054 spdmem0 at iic0 addr 0x50: 4GB DDR3 SDRAM PC3-12800 azalia1 at pci0 dev 20 function 2 "AMD Hudson-2 HD Audio" rev 0x02: apic 5 int 16 azalia1: codecs: Realtek/0x0887 audio0 at azalia1 pcib0 at pci0 dev 20 function 3 "AMD Hudson-2 LPC" rev 0x11 pchb2 at pci0 dev 24 function 0 "AMD AMD64 16h Link Cfg" rev 0x00 pchb3 at pci0 dev 24 function 1 "AMD AMD64 16h Address Map" rev 0x00 pchb4 at pci0 dev 24 function 2 "AMD AMD64 16h DRAM Cfg" rev 0x00 km0 at pci0 dev 24 function 3 "AMD AMD64 16h Misc Cfg" rev 0x00 pchb5 at pci0 dev 24 function 4 "AMD AMD64 16h CPU Power" rev 0x00 pchb6 at pci0 dev 24 function 5 vendor "AMD", unknown product 0x1535 rev 0x00 usb4 at ohci0: USB revision 1.0 uhub4 at usb4 configuration 1 interface 0 "AMD OHCI root hub" rev 1.00/1.00 addr 1 usb5 at ohci1: USB revision 1.0 uhub5 at usb5 configuration 1 interface 0 "AMD OHCI root hub" rev 1.00/1.00 addr 1 isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pckbd0 at pckbc0 (kbd slot) wskbd0 at pckbd0: console keyboard, using wsdisplay0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 lpt0 at isa0 port 0x378/4 irq 7 vmm0 at mainbus0: SVM/RVI splassert: usb_transfer_complete: want 5 have 6 splassert: usb_transfer_complete: want 5 have 6 splassert: usb_transfer_complete: want 5 have 6 uhidev0 at uhub4 port 4 configuration 1 interface 0 "Logitech USB Optical Mouse" rev 2.00/72.00 addr 2 uhidev0: iclass 3/1 ums0 at uhidev0: 3 buttons, Z dir wsmouse0 at ums0 mux 0 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets sd1 at scsibus3 targ 1 lun 0: <OPENBSD, SR CRYPTO, 006> SCSI2 0/direct fixed sd1: 953866MB, 512 bytes/sector, 1953519473 sectors root on sd1a (445a85750d94557d.a) swap on sd1b dump on sd1b umass0 at uhub1 port 3 configuration 1 interface 0 "JetFlash Mass Storage Device" rev 2.00/1.00 addr 2 umass0: using SCSI over Bulk-Only scsibus4 at umass0: 2 targets, initiator 0 sd2 at scsibus4 targ 1 lun 0: <JetFlash, Transcend 8GB, 8.07> SCSI2 0/direct removable sd2: 7656MB, 512 bytes/sector, 15679488 sectors