On 04/22/2010 04:33 PM, Richard Mawson wrote:
Tejun,
On Thu, Apr 22, 2010 at 03:33:55PM +0200, Tejun Heo wrote:
If you have any suggestions as to what the likely problem is, or
things to look for I am all ears.
Please try non-xen vanialla kernel and report the failing kernel log.
I have compiled 2.6.33-2, and the same thing happens.
That is, modprobe sata_sil24 prints one message to the console suggesting the PCI slot,
then freezes the system.
Unfortunately it doesn't seem to have managed to write anything to messages/kernel.log,
which is on a p-ata disk.
I managed to hand copy some of the output from alt-sysrq-t which looks like it includes the
stack running as a result of the modprobe -- does this help to explain where the problem is?
This was manually copied, so there might be a typo or two:
c03118f8 ? schedule+0x897/0x94e
c014406a ? ktime_get_ts+0xd7/0xdf
c0217b42 ? cfq_rb_erase+0x1b/0x2a
c021f449 ? number+0x149/0x20e
c023a9cb ? vgacon_scroll+0x180/0x19a
c0194e0c ? __insert_vmap_area+0x5e/0x96
c017fac3 ? __alloc_pages_nodemask+0xe2/0x4ec
c019b409 ? cache_alloc_refill+0x63/0x417
c02995c9 ? pci_conf1_write+0xb2/0xc0
c029a9fb ? raw_pci_write+0x4e/0x56
c029aa40 ? pci_write+0x1c/0x21
c0228a3e ? pci_bus_write_config_dword+0x46/0x50
c022ae0c ? pcie_set_readrq+0x8c/0x9e
f9f185bc ? sil24_init_one+0x1ax/0x21a [sata_sil24]
c022d899 ? local_pci_probe+0xb/0xc
c022de7d ? pci_device_probe+0x41/0x63
c0287489 ? driver_probe_device+0x76/0xfe
c0287451 ? __driver_attach+0x40/0x5b
c0286dcd ? bus_for_each_dev0x37/0x5f
c0287270 ? driver_attach+0x11/0x13
c0287411 ? __driver_attach+0x0/0x5b
c0286852 ? bus_add_driver+0xd6/0x201
c028766b ? driver_register+0x87/0xe0
c022e050 ? __pci_register_driver+0x33/0x89
f9f1d000 ? sil24_init+0x0/0x14 [sata_sil24]
c010112d ? do_one_initcall+0x44/0x120
c014f1c2 ? sys_init_module+0xa7/0x1d7
c03130f5 ? syscall_call+0x7/0xb
I don't know that it is relevant, but the pcie card is plugged into a pci-pcie
converter card.
Let me know if there is anything else I can supply to help analyse this (anything
I do will have to be in the next couple of days as thats all the time I have to
return the goods for a refund!!).
Hmm, that seems like this line in drivers/ata/sata_sil24.c:
/* Set max read request size to 4096. This slightly increases
* write throughput for pci-e variants.
*/
pcie_set_readrq(pdev, 4096);
Can you try commenting out or deleting that line and rebuilding, and see
if things work better? That's not really a solution, but if it worked,
it would indicate there's something about the system configuration with
that converter card installed that explodes when trying to set the max
read request size. In that case can you post the output of "lspci -vv"
and the full dmesg boot log?
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