OpenSound-232d0de71550 KDL's on boot (possible mtrr issue?)

[mmadia]

This ticket is being split off from my comments made in #6849, as there may be possible confusion between the various OpenSound packages (which are not part of build/jam/OptionalPackages, due to concerns of known issues).

This package of ​opensound-232d0de71550 was built on hrev39567 with GCC4. It contains extra dprintf()'s to help pinpoint the exact location of failure.

The failure occurs when

1. The above OpenSound package is installed
2. /boot/system/add-ons/kernel/drivers/dev/audio/* is archived and the original files are removed
3. On reboot, oss detects the hd audio chipset and triggers a KDL.

The failure is in ​os_beos.c oss_map_pci_mem()

caddr_t
oss_map_pci_mem (oss_device_t * osdev, int nr, int phaddr, int size)
{
  status_t err;
  void *va = NULL;
  FENTRYA("%p,%d,%u,%d", osdev, nr, phaddr, size);
  //XXX:align phaddr ?
  /* round up to page size */
  size += B_PAGE_SIZE - 1;
  size &= ~(B_PAGE_SIZE - 1);
  dprintf("oss_map_pci_mem()\n");
  err = map_physical_memory(OSS_PCI_AREA_NAME, (void *)phaddr, size,
                            B_ANY_KERNEL_BLOCK_ADDRESS, 0, &va);
  dprintf("oss_map_pci_mem() -- past map_physical_memory\n");
  if (err < B_OK)
    va = NULL;
  FEXITR((uint32)va);
  return (caddr_t)va;
}

Serial output snippet (full log is attached)

Could not load kernel add-on "/boot/system/add-ons/kernel/drivers/dev/audio/hmulti.zip": Not an executable
oss_load_options(): oss_core
oss_load_options(): oss_core -- past load_driver_settings()
exiting oss_load_options(): oss_core
oss_common_init
oss_register_device
oss_register_device() OSS core services
oss_register_device() OSS core services -- exiting
past oss_register_device
oss:init_osscore: 0x00000000
oss:init_driver():	calling gOSSCore->oss_load_drivers()
oss_load_drivers()
Last message repeated 13 times.
oss: matching pci 10de,03f0
oss_load_options(): oss_hdaudio
oss_load_options(): oss_hdaudio -- past load_driver_settings()
exiting oss_load_options(): oss_hdaudio
oss_hdaudio_attach()
oss_map_pci_mem()
add_memory_type_range(3636, 0xffffffffdde78000, 0x4000, 0)
PANIC: Unexpected exception "General Protection Exception" occurred in kernel mode! Error code: 0x0

Welcome to Kernel Debugging Land...
Thread 145 "media_addon_server" running on CPU 1
stack trace for thread 145 "media_addon_server"
    kernel stack: 0x818f7000 to 0x818fb000
      user stack: 0x7efef000 to 0x7ffef000

[mmadia]

serial log of booting with opensound-232d0de71550-x86-gcc4-2010-11-26-built_on_r39567-with_extra_dprintf.zip installed

[mmadia]

Setting this ticket as a blocker for #6849, as the current OpenSound package in build/jam/OptionalPackages (opensound-4.2-r1a2-x86-gcc2-2010-05-01.zip) does not contain the code to allow co-existence with native drivers.

[mmu_man]

The current 4.2_git-2 package has a fix for this (the KDL on 64bit). I thought I upstreamed it but it doesn't seem to be in their git tree yet.

Please test on a recent nightly.

[waddlesplash]

No reply, assuming fixed.