[Nouveau] [Bug 23847] kernel BUG when using nouveau

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=23847





--- Comment #18 from a.radke at arcor.de  2009-09-29 10:32:25 PST ---
I have a x86_64 system and enabled DEBUG_SPINLOCK but it didn't solve anything
for me.

I enabled the debug option for the drm module and when udev starts it shows 

Sep 29 16:59:20 workstation64 kernel: BUG: unable to handle kernel NULL pointer
dereference at 00000000000000cc
Sep 29 16:59:20 workstation64 kernel: IP: [<ffffffff811f726b>]
_raw_spin_lock+0x2b/0x190
Sep 29 16:59:20 workstation64 kernel: PGD 22e59f067 PUD 22e60a067 PMD 0 
Sep 29 16:59:20 workstation64 kernel: Oops: 0000 [#1] PREEMPT SMP 
Sep 29 16:59:20 workstation64 kernel: last sysfs file:
/sys/module/evdev/initstate
Sep 29 16:59:20 workstation64 kernel: CPU 3 
Sep 29 16:59:20 workstation64 kernel: Modules linked in: ttm(+) serio_raw
drm_kms_helper thermal sg mii pcspkr soundcore snd_page_alloc evdev ehci_hcd(+)
drm i2c_i801 button iTCO_wdt i2c_algo_bit iTCO_vendor_su
pport i2c_core processor usbcore intel_agp rtc_cmos rtc_core rtc_lib ext4
mbcache jbd2 crc16 sd_mod ahci libata scsi_mod
Sep 29 16:59:20 workstation64 kernel: Pid: 601, comm: modprobe Not tainted
2.6.31-ARCH #1 OEM
Sep 29 16:59:20 workstation64 kernel: RIP: 0010:[<ffffffff811f726b>] 
[<ffffffff811f726b>] _raw_spin_lock+0x2b/0x190

more in the log


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