Messages in this thread | | | Date | Wed, 13 Sep 2006 03:24:47 +0200 | From | Christian Leber <> | Subject | Re: [BUG] 2.6.18-rc6: hda is allready "IN USE" when booting / pi futex |
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On Tue, Sep 12, 2006 at 11:55:10PM +0200, Ingo Molnar wrote:
> ok, great. Could you try the patch below ontop of 2.6.18-rc6, does it > 'fix' your bootup too?
Yes, it does.
> so i'm afraid you managed to trigger a race in the IDE driver that used > to be dormant until now... To debug such races the best method is to > create a 'trace' by printk-ing key points of the port/disk detection > mechanism. [another option would be to use the latency tracer to do a > _really_ finegrained trace of the incident - assuming that the bug does > not go away due to tracing overhead.]
I'm looking into it, but i doubt i can find the "race"
The output, when it works it looks like this:
[ 11.275757] ICH2M: IDE controller at PCI slot 0000:00:1f.1 [ 11.275854] ICH2M: chipset revision 3 [ 11.275917] ICH2M: not 100% native mode: will probe irqs later [ 11.275999] ide0: BM-DMA at 0xbfa0-0xbfa7, BIOS settings: hda:DMA, hdb:DMA [ 11.276170] ide1: BM-DMA at 0xbfa8-0xbfaf, BIOS settings: hdc:pio, hdd:pio [ 11.276337] Probing IDE interface ide0... [ 2.804000] Time: acpi_pm clocksource has been installed. [ 3.056000] hda: IC25N020ATMR04-0, ATA DISK drive [ 3.504000] hdb: HL-DT-STDVD-ROM GDR8081N, ATAPI CD/DVD-ROM drive [ 3.560000] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 [ 3.560000] Probing IDE interface ide1... [ 4.136000] hda: max request size: 512KiB [ 4.156000] hda: 39070080 sectors (20003 MB) w/1740KiB Cache, CHS=16383/255/63, UDMA(100) [ 4.156000] hda: cache flushes supported [ 4.156000] hda: hda1 hda2 hda3 [ 4.216000] hdb: ATAPI 24X DVD-ROM drive, 512kB Cache, DMA [ 4.216000] Uniform CD-ROM driver Revision: 3.20 [ 4.816000] usbcore: registered new driver usbfs [ 4.820000] usbcore: registered new driver hub [ 4.820000] USB Universal Host Controller Interface driver v3.0
When it fails the order is different: (but not allways the same, of course)
hda: IC25N020ATMR04-0, ATA DISK drive <- the disk is found before the controller?!? ICH2M: IDE controller at PCI slot 0000:00:1f.1 ICH2M: chipset revision 3 ICH2M: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xbfa0-0xbfa7, BIOS settings: hda:DMA, hdb:DMA ide1: BM-DMA at 0xbfa8-0xbfaf, BIOS settings: hdc:pio, hdd:pio ide0: I/O resource 0x3F6-0x3F6 not free hda: ERROR, PORTS ALREADY IN USE ide0 ad 0x1f0-0x1f7,0x3f6 on irq 14 usbcore: registered new driver usbfs usbcore: registered new driver hub USB Universal Host Controller Interface driver v3.0 hdb: HL-DT-STDVD-ROM GDR8081N, ATAPI CD/DVD-ROM drive ide1: I/O resource 0x376-0x376 not free ide1: ports already in use, skipping probe register_blkdev: cannot get major 3 for ide0
Christian Leber
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