Bug#586292: xserver-xorg-core: deadlocks for no apparent reason

[Jonathan Nieder <jrnieder@gmail.com>]

Hi Ulrich,

Ulrich Klauer wrote:

> Earlier this week, I experienced for the
> first time a complete freeze of my X system, for no apparent reason - just
> browsing the web (using Iceweasel), nothing dangerous.
[...]
>  INFO: task events/0:9 blocked for more than 120 seconds.
[...]
>  Call Trace:
>   [<ffffffff81033d99>] ? change_page_attr_set_clr+0x2f2/0x394
>   [<ffffffff8100f792>] ? __switch_to+0x27b/0x297
>   [<ffffffffa02b8c80>] ? ttm_bo_wait_unreserved+0x102/0x11c [ttm]
>   [<ffffffff81064afa>] ? autoremove_wake_function+0x0/0x2e
[...]
>  INFO: task Xorg:1689 blocked for more than 120 seconds.
[...]
>  Call Trace:
>   [<ffffffffa02b865b>] ? ttm_bo_wait+0x13c/0x160 [ttm]
>   [<ffffffff812f982c>] ? schedule_timeout+0x2e/0xdd
>   [<ffffffffa02bb464>] ? ttm_bo_free_old_node+0x23/0x37 [ttm]
>   [<ffffffffa02bb534>] ? ttm_bo_move_accel_cleanup+0xbc/0x2c6 [ttm]
>   [<ffffffff810e4f09>] ? virt_to_head_page+0x9/0x2a
>   [<ffffffffa02ebf6e>] ? radeon_fence_destroy+0x0/0x6e [radeon]
[...]
>   [<ffffffffa0322c35>] ? r600_cs_parse+0x5f2/0xf0d [radeon]

Sorry for the slow reply.  What kernel do you use nowadays?  Does this
still happen?