tags 645785 + unreproducible
quit
Giuseppe Sacco wrote:
>> Giuseppe Sacco wrote:
>>> I just got this trace while using new gnome shell and playing a video on
>>> youtube on a browser:
[...]
>>> BUG: unable to handle kernel NULL pointer dereference at 00000001
[...]
> today I tried to reproduce it but the system did not crash.
Thanks; marking accordingly.
What chipset do you use? Please attach /var/log/Xorg.0.log and dmesg
output from just after booting.
The invalid pointer dereference is in nouveau_fence_update(),
dereferencing "chan" to compute chan->dev. chan is 0x1 (weird ---
shouldn't a struct nouveau_channel be word-aligned?) and was obtained
by dereferencing sync_obj (== fence).
Call trace and interpretation of stack, for the curious:
nouveau_fence_update(0x1)
sequence: <uninitialized>
%ebx: 0xc7fda2e0
%esi: 0xf6d00ed0
%edi: 0xf6d00ed0
%ebp: 0x00000001
__nouveau_fence_signalled(0xc7fda2e0, 0x0)
%ebx: 0x000f4240
__nouveau_fence_wait(0xc7fda2e0, 0x0, 1, 0)
intr: ?
timeout: 0x00800c3a
sync_obj: 0xc7fda2e0
sync_arg: 0x0
sleep_time (64 bits): <uninitialized>
%ebx: 0xf4000000
%esi: 0x00000004
%edi: 0xf6ebb800
%ebp: 0xc61b4d60
nouveau_fence_sync(0xc7fda2e0, 0xf6ebb800)
<stack as far as we have includes some locals from here>
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