[Bug 187015] [panic] make_dev_credv: bad si_name (error=17, si_name=agpgart)

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Sun Jul 27 06:37:14 UTC 2014


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=187015

--- Comment #4 from tatsuki_makino at hotmail.com ---
Created attachment 145023
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=145023&action=edit
test patch for 8-STABLE

8.4-RELEASE and 8.4-STABLE has same problem. But 8.4 doesn't cause panic.
Because devfs of 8.4 allows make duplicate entry.

Quote of part of the dmesg.boot when the patch is used:

pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <Intel 82855GM host to AGP bridge> on hostb0
agp0: ==== make_dev agpgart for 0x35808086 ====
agp0: ==== sc->as_devnode: 0xc52a4300 ====
agp0: ==== sc->as_devnode->si_drv1: 0 ====
agp0: ==== sc->as_devnode->si_drv1: 0xc52a1000 ====
pci0: <base peripheral> at device 0.1 (no driver attached)
pci0: <base peripheral> at device 0.3 (no driver attached)
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
vgapci0: <VGA-compatible display> port 0x1800-0x1807 mem
0xe8000000-0xefffffff,0xe0000000-0xe007ffff irq 9 at device 2.0 on pci0
agp1: <Intel 82855GME (855GME GMCH) SVGA controller> on vgapci0
agp1: ==== make_dev agpgart for 0x35828086 ====
agp1: ==== sc->as_devnode: 0xc52a4400 ====
agp1: ==== sc->as_devnode->si_drv1: 0 ====
agp1: ==== sc->as_devnode->si_drv1: 0xc5295480 ====
agp1: aperture size is 128M, detected 8060k stolen memory
vgapci1: <VGA-compatible display> mem
0xf0000000-0xf7ffffff,0xe0080000-0xe00fffff at device 2.1 on pci0

sc->as_devnode refers to a different pointer. I do not know how it work
correctly.

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