commit 2b16eaefb38b4a6efe50a397e68793ab9a1cb2ef
Author: Chris Wilson <[email protected]>
Date: Fri Jul 12 23:22:59 2013 +0100
sna: Avoid integer overflow when computing the tiled extents
When stepping over the tiles, beware that the step may overflow the
int16_t region extents, so use an int for the calculation.
Reported-by: Andrew Woodward
Bugzilla:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1200766
Signed-off-by: Chris Wilson <[email protected]>
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/1200766
Title:
[Saucy] Xorg with Intel video freezes when rendering some png files
Status in “xserver-xorg-video-intel” package in Ubuntu:
Fix Committed
Bug description:
In raring I've found that when directly opening some png files, or
somtimes when an application loads png's the Xorg freezes either
completely, or sometime allows the mouse to move.
In a specific case, opening the attached png with the intel driver
will cause Xorg to freeze but the the cursor will still move, but
interaction is futile. System remains accessable over SSH.
The following log is found in Xorg.0.log
(EE) [mi] EQ overflowing. Additional events will be discarded until existing
events are processed.
(EE)
(EE) Backtrace:
(EE) 0: /usr/bin/X (xorg_backtrace+0x3d) [0x7faf70e8550d]
(EE) 1: /usr/bin/X (mieqEnqueue+0x22b) [0x7faf70e6744b]
(EE) 2: /usr/bin/X (QueuePointerEvents+0x52) [0x7faf70d4f322]
(EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7faf6ae0e000+0x566f)
[0x7faf6ae1366f]
(EE) 4: /usr/bin/X (0x7faf70ce4000+0x913a8) [0x7faf70d753a8]
(EE) 5: /usr/bin/X (0x7faf70ce4000+0xb9a60) [0x7faf70d9da60]
(EE) 6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7faf6fde4000+0xfbd0)
[0x7faf6fdf3bd0]
(EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7faf6eb00747]
(EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x34) [0x7faf6fbdb344]
(EE) 9: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7faf6d339000+0x3f178)
[0x7faf6d378178]
(EE) 10: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7faf6d339000+0xd0e18)
[0x7faf6d409e18]
(EE) 11: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7faf6d339000+0xd14e9)
[0x7faf6d40a4e9]
(EE) 12: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7faf6d339000+0xd47f8)
[0x7faf6d40d7f8]
(EE) 13: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7faf6d339000+0x97604)
[0x7faf6d3d0604]
(EE) 14: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7faf6d339000+0xd4b31)
[0x7faf6d40db31]
(EE) 15: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7faf6d339000+0x68a5b)
[0x7faf6d3a1a5b]
(EE) 16: /usr/bin/X (0x7faf70ce4000+0x126ee1) [0x7faf70e0aee1]
(EE) 17: /usr/bin/X (0x7faf70ce4000+0x54cde) [0x7faf70d38cde]
(EE) 18: /usr/bin/X (0x7faf70ce4000+0x4431a) [0x7faf70d2831a]
(EE) 19: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf5)
[0x7faf6ea30ea5]
(EE) 20: /usr/bin/X (0x7faf70ce4000+0x44661) [0x7faf70d28661]
(EE)
(EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up
the stack.
(EE) [mi] mieq is *NOT* the cause. It is a victim.
(EE) [mi] EQ overflow continuing. 100 events have been dropped.
(EE)
There is no usefull data in dmesg and
$ cat i915_error_state
no error state collected
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