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Subjecti915 KMS framebuffer oops report
Date
I've tested the GIT tree submitted by Airlied for inclusion
in 2.6.29, and just got an oops when trying to load i915
with kernel mode setting:

<6>Linux agpgart interface v0.103
<6>agpgart-intel 0000:00:00.0: Intel 945GM Chipset
<6>agpgart-intel 0000:00:00.0: detected 7932K stolen memory
<6>agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xd0000000
<6>[drm] Initialized drm 1.1.0 20060810
<6>pci 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
<7>pci 0000:00:02.0: setting latency timer to 64
<1>BUG: unable to handle kernel NULL pointer dereference at 00000000
<1>IP: [<00000000>] 0x0
<4>*pde = 00000000
<0>Oops: 0000 [#1] SMP
<0>last sysfs file:
<4>Modules linked in: i915(+) cfbfillrect cfbimgblt cfbcopyarea i2c_algo_bit drm i2c_core intel_agp agpgart
<4>
<4>Pid: 1420, comm: insmod Not tainted (2.6.28 #1) Latitude D820
<4>EIP: 0060:[<00000000>] EFLAGS: 00010246 CPU: 1
<4>EIP is at 0x0
<4>EAX: 00000000 EBX: c1fbc2a0 ECX: c2008500 EDX: c1fbc2a0
<4>ESI: 00000000 EDI: f6f64148 EBP: 00000000 ESP: f648bca8
<4> DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
<0>Process insmod (pid: 1420, ti=f648a000 task=f6fcd8d0 task.ti=f648a000)
<0>Stack:
<4> c0152fe0 000000d0 00000000 00000000 00000000 00000000 f6f64148 c0153054
<0> 00000000 00000000 00000000 00000000 00000020 f65853c0 c01530f0 00000000
<0> f65853c0 f7e08bcc 00000000 f7cd3931 f6437f40 f6f64148 f6585440 f65853c0
<0>Call Trace:
<0> [<c0152fe0>] __read_cache_page+0x70/0xc0
<0> [<c0153054>] read_cache_page_async+0x24/0xb0
<0> [<c01530f0>] read_cache_page+0x10/0x50
<0> [<f7e08bcc>] i915_gem_object_get_page_list+0x7c/0x100 [i915]
<0> [<f7cd3931>] drm_mm_split_at_start+0x21/0x80 [drm]
<0> [<f7e09437>] i915_gem_object_bind_to_gtt+0xd7/0x1f0 [i915]
<0> [<f7e0a617>] i915_gem_object_pin+0x87/0xd0 [i915]
<0> [<f7e0a9e2>] i915_gem_init_object+0x12/0x50 [i915]
<0> [<f7ccc627>] drm_gem_object_alloc+0x87/0xb0 [drm]
<0> [<f7e0aff1>] i915_gem_init_ringbuffer+0x71/0x340 [i915]
<0> [<f7cd3887>] drm_mm_create_tail_node+0x27/0x80 [drm]
<0> [<f7e03fc7>] i915_load_modeset_init+0x2e7/0x460 [i915]
<0> [<f7e0434a>] i915_driver_load+0x1ba/0x2c0 [i915]
<0> [<f7cd085e>] drm_get_dev+0x1ce/0x200 [drm]
<0> [<c01ff5f0>] pci_get_dev_by_id+0x40/0x80
<0> [<f7ccb17c>] drm_init+0x8c/0xf0 [drm]
<0> [<f7c78000>] i915_init+0x0/0x6a [i915]
<0> [<c0101113>] do_one_initcall+0x23/0x1d0
<0> [<c01ee015>] idr_get_empty_slot+0xc5/0x150
<0> [<c01b19d2>] sysfs_add_one+0x12/0x50
<0> [<c01ee74f>] ida_get_new_above+0x3f/0x1b0
<0> [<c01b1880>] sysfs_ilookup_test+0x0/0x10
<0> [<c01b1880>] sysfs_ilookup_test+0x0/0x10
<0> [<c0183de1>] ifind+0x31/0xa0
<0> [<c01b1987>] __sysfs_add_one+0x47/0x80
<0> [<c01b19d2>] sysfs_add_one+0x12/0x50
<0> [<c01b18cf>] sysfs_addrm_start+0x3f/0xb0
<0> [<c01b1b5e>] sysfs_addrm_finish+0xe/0xa0
<0> [<c016a7bd>] __vunmap+0x4d/0xc0
<0> [<c014a8c4>] load_module+0xa14/0xb70
<0> [<c0152bb0>] filemap_fault+0x0/0x360
<0> [<c013f277>] blocking_notifier_call_chain+0x17/0x20
<0> [<c014ab06>] sys_init_module+0xe6/0x1a0
<0> [<c010340a>] syscall_call+0x7/0xb
<0>Code: Bad EIP value.
<0>EIP: [<00000000>] 0x0 SS:ESP 0068:f648bca8
<4>---[ end trace 6e26e53289db93ad ]---



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