[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419
Sérgio M Basto ser...@sergiomb.no-ip.org changed:
What|Removed |Added
CC||ser...@sergiomb.no-ip.org
--- Comment #16 from Sérgio M Basto ser...@sergiomb.no-ip.org 2009-03-31
02:10:22 ---
(In reply to comment #13)
Thanks for the report. I think this was the bug:
-ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, data);
+ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data);
but I still haven't actually tested that path yet (been trying to get the GEM
paths solid). New for-review pushed.
I don't find the code which have ret = i915_dispatch_cmdbuffer(dev, cmdbuf,
cliprects, for check it out, this is for libdrm, for kernel or for drive ?
===
[ INFO: possible circular locking dependency detected ]
2.6.29-16.fc10.i686.PAE #1
---
X/2732 is trying to acquire lock:
(mm-mmap_sem){}, at: [c049c5ea] might_fault+0x48/0x85
but task is already holding lock:
(dev-struct_mutex){--..}, at: [f8353b97] i915_gem_execbuffer+0x105/0xad7
[i915]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
- #1 (dev-struct_mutex){--..}:
[c045a290] __lock_acquire+0x9a8/0xb1b
[c045a45e] lock_acquire+0x5b/0x81
[c070ff00] __mutex_lock_common+0xda/0x32e
[c07101fb] mutex_lock_nested+0x33/0x3b
[f81bc7b0] drm_gem_mmap+0x34/0xf8 [drm]
[c04a384f] mmap_region+0x255/0x3f9
[c04a3c3a] do_mmap_pgoff+0x247/0x297
[c040c739] sys_mmap2+0x5f/0x80
[c040966b] sysenter_do_call+0x12/0x3f
[] 0x
- #0 (mm-mmap_sem){}:
[c045a165] __lock_acquire+0x87d/0xb1b
[c045a45e] lock_acquire+0x5b/0x81
[c049c607] might_fault+0x65/0x85
[c055330c] copy_from_user+0x2f/0x117
[f8353d55] i915_gem_execbuffer+0x2c3/0xad7 [i915]
[f81bb8c2] drm_ioctl+0x1c4/0x241 [drm]
[c04c18c7] vfs_ioctl+0x55/0x6e
[c04c1e18] do_vfs_ioctl+0x46f/0x4a8
[c04c1e96] sys_ioctl+0x45/0x5f
[c040966b] sysenter_do_call+0x12/0x3f
[] 0x
other info that might help us debug this:
1 lock held by X/2732:
#0: (dev-struct_mutex){--..}, at: [f8353b97]
i915_gem_execbuffer+0x105/0xad7 [i915]
stack backtrace:
Pid: 2732, comm: X Not tainted 2.6.29-16.fc10.i686.PAE #1
Call Trace:
[c070ec6f] ? printk+0x14/0x1d
[c04596d1] print_circular_bug_tail+0x5d/0x68
[c045a165] __lock_acquire+0x87d/0xb1b
[c045a45e] lock_acquire+0x5b/0x81
[c049c5ea] ? might_fault+0x48/0x85
[c049c607] might_fault+0x65/0x85
[c049c5ea] ? might_fault+0x48/0x85
[c055330c] copy_from_user+0x2f/0x117
[f8353d55] i915_gem_execbuffer+0x2c3/0xad7 [i915]
[c04b0d29] ? __slab_alloc+0x3d0/0x445
[c049c625] ? might_fault+0x83/0x85
[c055330c] ? copy_from_user+0x2f/0x117
[f81bb8c2] drm_ioctl+0x1c4/0x241 [drm]
[f8353a92] ? i915_gem_execbuffer+0x0/0xad7 [i915]
[c04c18c7] vfs_ioctl+0x55/0x6e
[c04c1e18] do_vfs_ioctl+0x46f/0x4a8
[c0556448] ? _raw_spin_unlock+0x74/0x78
[c04b6b92] ? fsnotify_modify+0x54/0x5f
[c04b6d83] ? do_sync_write+0x0/0xee
[c04b769f] ? vfs_write+0xa9/0xe4
[c04c1e96] sys_ioctl+0x45/0x5f
[c040966b] sysenter_do_call+0x12/0x3f
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
--- You are receiving this mail because: ---
You are watching the assignee of the bug.
--
--
___
Dri-devel mailing list
Dri-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 a...@lxorguk.ukuu.org.uk changed: What|Removed |Added Status|NEW |CLOSED Resolution||CODE_FIX -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #15 from r...@sisk.pl 2009-03-23 15:19 --- On Monday 23 March 2009, Wang Chen wrote: Rafael J. Wysocki said the following on 2009-3-22 0:28: This message has been generated automatically as a part of a report of recent regressions. The following bug entry is on the current list of known regressions from 2.6.28. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12419 Subject : possible circular locking dependency on i915 dma Submitter : Wang Chen wangc...@cn.fujitsu.com Date: 2009-01-08 14:11 (73 days old) not yet fixed :) -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 sits...@yahoo.com changed: What|Removed |Added AssignedTo|drivers_video-...@kernel- |sits...@yahoo.com |bugs.osdl.org | Status|NEW |ASSIGNED --- Comment #14 from sits...@yahoo.com 2009-03-17 08:01 --- OK if this latest fix went into for-review (it was kind of hard to tell because the dates are unchanged but the commit id has) then the problem has been resolved (only the classic [drm:drm_wait_vblank] *ERROR* failed to acquire vblank counter, -22 seems to be logged). -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. You are the assignee for the bug, or are watching the assignee. -- Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 sits...@yahoo.com changed: What|Removed |Added AssignedTo|sits...@yahoo.com |drivers_video-...@kernel- ||bugs.osdl.org Status|ASSIGNED|NEW -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #13 from e...@anholt.net 2009-03-16 15:22 --- Thanks for the report. I think this was the bug: - ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, data); + ret = i915_dispatch_cmdbuffer(dev, cmdbuf, cliprects, batch_data); but I still haven't actually tested that path yet (been trying to get the GEM paths solid). New for-review pushed. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #11 from sits...@yahoo.com 2009-03-14 07:43 --- Testing the for-review tree (2.6.29-rc7-00158-gbe68829) on http://git.kernel.org/?p=linux/kernel/git/anholt/drm-intel.git;a=summary results in GL not working at all and messages like the following appearing in dmesg on my i915: [ 406.861101] [drm:drm_wait_vblank] *ERROR* failed to acquire vblank counter, -22 [ 406.863975] [drm:i915_cmdbuffer] *ERROR* i915_dispatch_cmdbuffer failed -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #12 from r...@sisk.pl 2009-03-14 14:10 --- First-Bad-Commit : 546b0974c39657017407c86fe79811100b60700d -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #10 from e...@anholt.net 2009-03-11 12:37 --- untested patch in my for-review branch: commit 891d7ad89882bd81377f09b6dd5823686cc6ba07 Author: Eric Anholt e...@anholt.net Date: Wed Mar 11 12:30:04 2009 -0700 drm/i915: Fix lock order reversal with cliprects and cmdbuf in non-GEM paths. This introduces allocation in the batch submission path that wasn't there previously, but this is a compatibility path so we care about simplicity more than performance. kernel.org bug #12419. Signed-off-by: Eric Anholt e...@anholt.net -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #9 from r...@sisk.pl 2009-03-04 11:44 --- On Wednesday 04 March 2009, Wang Chen wrote: Rafael J. Wysocki said the following on 2009-3-4 3:25: This message has been generated automatically as a part of a report of recent regressions. The following bug entry is on the current list of known regressions from 2.6.28. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12419 Subject : possible circular locking dependency on i915 dma Submitter : Wang Chen wangc...@cn.fujitsu.com Date: 2009-01-08 14:11 (55 days old) First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=546b0974c39657017407c86fe79811100b60700d References : http://marc.info/?l=linux-kernelm=123142399720125w=4 yet not fixed. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #8 from r...@sisk.pl 2009-03-02 14:17 --- First-Bad-Commit : 546b0974c39657017407c86fe79811100b60700d -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419
--- Comment #7 from r...@sisk.pl 2009-02-25 14:54 ---
On Tuesday 24 February 2009, Wang Chen wrote:
Rafael J. Wysocki said the following on 2009-2-24 5:48:
This message has been generated automatically as a part of a report
of recent regressions.
The following bug entry is on the current list of known regressions
from 2.6.28. Please verify if it still should be listed and let me know
(either way).
Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12419
Subject : possible circular locking dependency on i915 dma
Submitter : Wang Chen wangc...@cn.fujitsu.com
Date: 2009-01-08 14:11 (47 days old)
First-Bad-Commit:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=546b0974c39657017407c86fe79811100b60700d
References : http://marc.info/?l=linux-kernelm=123142399720125w=4
not changed.
===
[ INFO: possible circular locking dependency detected ]
2.6.29-rc6-default #165
---
X/3940 is trying to acquire lock:
(mm-mmap_sem){}, at: [c0168e97] might_fault+0x42/0x7e
but task is already holding lock:
(dev-struct_mutex){--..}, at: [eeb76fed] i915_cmdbuffer+0xf4/0x411 [i915]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
- #2 (dev-struct_mutex){--..}:
[c013791a] validate_chain+0x8be/0xbb5
[c0138280] __lock_acquire+0x66f/0x6f9
[c0138365] lock_acquire+0x5b/0x77
[c02e56fe] mutex_lock_nested+0xdb/0x244
[eeb5b03e] drm_vm_open+0x25/0x37 [drm]
[c011a8b3] dup_mm+0x247/0x2f2
[c011b312] copy_process+0x98c/0xfeb
[c011bac7] do_fork+0x120/0x29c
[c01016be] sys_clone+0x25/0x2a
[c0102cdd] sysenter_do_call+0x12/0x31
[] 0x
- #1 (mm-mmap_sem/1){--..}:
[c013791a] validate_chain+0x8be/0xbb5
[c0138280] __lock_acquire+0x66f/0x6f9
[c0138365] lock_acquire+0x5b/0x77
[c012e6f6] down_write_nested+0x32/0x4f
[c011a711] dup_mm+0xa5/0x2f2
[c011b312] copy_process+0x98c/0xfeb
[c011bac7] do_fork+0x120/0x29c
[c01016be] sys_clone+0x25/0x2a
[c0102cdd] sysenter_do_call+0x12/0x31
[] 0x
- #0 (mm-mmap_sem){}:
[c0137625] validate_chain+0x5c9/0xbb5
[c0138280] __lock_acquire+0x66f/0x6f9
[c0138365] lock_acquire+0x5b/0x77
[c0168eb4] might_fault+0x5f/0x7e
[eeb76d0a] i915_emit_box+0x1d/0x20c [i915]
[eeb7705e] i915_cmdbuffer+0x165/0x411 [i915]
[eeb5685b] drm_ioctl+0x1a6/0x21b [drm]
[c0182b29] vfs_ioctl+0x3d/0x50
[c0183029] do_vfs_ioctl+0x41b/0x483
[c01830d1] sys_ioctl+0x40/0x5a
[c0102cdd] sysenter_do_call+0x12/0x31
[] 0x
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
--- You are receiving this mail because: ---
You are the assignee for the bug, or are watching the assignee.
--
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
--
___
Dri-devel mailing list
Dri-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #5 from r...@sisk.pl 2009-02-16 12:43 --- On Monday 16 February 2009, Wang Chen wrote: Rafael J. Wysocki said the following on 2009-2-15 4:38: This message has been generated automatically as a part of a report of recent regressions. The following bug entry is on the current list of known regressions from 2.6.28. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12419 Subject : possible circular locking dependency on i915 dma Submitter : Wang Chen wangc...@cn.fujitsu.com Date: 2009-01-08 14:11 (38 days old) References : http://marc.info/?l=linux-kernelm=123142399720125w=4 Yes. It's still there in mainline. I think the commit 546b0974c39657017407c86fe79811100b60700d i915: Use struct_mutex to protect ring in GEM mode. brought this regression. The lockdep problem is as following: thread-1 i915_cmdbuffer() | --- lock(drm_device-struct_mutex) | V i915_dispatch_cmdbuffer() | i915_emit_box() | -copy_from_user() | -might_fault() | ---lock(mm-mmap_sem) thread-2 dup_mm() | ---lock(mm-mmap_sem) | V drm_vm_open() | --- lock(drm_device-struct_mutex) The different order to lock mmap_sem and drm_dev-struct_mutex introduces the problem. But it seems no way to reverse the lock order in i915. So how about refine the lock granularity of drm_dev-struct_mutex and exclude the mmap_sem lock/unlock out of the drm_dev-struct_mutex lock/unlock range? -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #6 from r...@sisk.pl 2009-02-16 12:48 --- First-Bad-Commit : 546b0974c39657017407c86fe79811100b60700d Notify-Also : Eric Anholt e...@anholt.net Notify-Also : Dave Airlie airl...@redhat.com -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419
sits...@yahoo.com changed:
What|Removed |Added
CC||sits...@yahoo.com
--- Comment #4 from sits...@yahoo.com 2009-02-15 07:58 ---
I'm seeing this on my EeePC 900 with 2.6.29rc5. It's highly reproducible:
[ 172.040511] ===
[ 172.040519] [ INFO: possible circular locking dependency detected ]
[ 172.040525] 2.6.29-rc5 #16
[ 172.040529] ---
[ 172.040534] ioquake3.i386/2981 is trying to acquire lock:
[ 172.040539] (mm-mmap_sem){}, at: [c017597b] might_fault+0x4b/0xa0
[ 172.040556]
[ 172.040557] but task is already holding lock:
[ 172.040562] (dev-struct_mutex){--..}, at: [c02b1020]
i915_cmdbuffer+0x90/0x530
[ 172.040575]
[ 172.040577] which lock already depends on the new lock.
[ 172.040579]
[ 172.040583]
[ 172.040584] the existing dependency chain (in reverse order) is:
[ 172.040588]
[ 172.040590] - #2 (dev-struct_mutex){--..}:
[ 172.040598][c014a92d] validate_chain+0xb6d/0x1150
[ 172.040609][c014c00c] __lock_acquire+0x31c/0x600
[ 172.040617][c014c367] lock_acquire+0x77/0xa0
[ 172.040624][c0402376] __mutex_lock_common+0x86/0x340
[ 172.040633][c040270d] mutex_lock_nested+0x3d/0x50
[ 172.040641][c02a6a42] drm_vm_open+0x32/0x50
[ 172.040649][c01256a3] dup_mm+0x233/0x320
[ 172.040658][c0126893] copy_process+0xcd3/0xf30
[ 172.040665][c0126b74] do_fork+0x84/0x350
[ 172.040672][c01017b4] sys_clone+0x34/0x40
[ 172.040680][c0103355] sysenter_do_call+0x12/0x35
[ 172.040687][] 0x
[ 172.040693]
[ 172.040694] - #1 (mm-mmap_sem/1){--..}:
[ 172.040704][c014a92d] validate_chain+0xb6d/0x1150
[ 172.040712][c014c00c] __lock_acquire+0x31c/0x600
[ 172.040719][c014c367] lock_acquire+0x77/0xa0
[ 172.040727][c013ea62] down_write_nested+0x52/0x70
[ 172.040735][c0125536] dup_mm+0xc6/0x320
[ 172.040742][c0126893] copy_process+0xcd3/0xf30
[ 172.040750][c0126b74] do_fork+0x84/0x350
[ 172.040757][c01017b4] sys_clone+0x34/0x40
[ 172.040763][c0103355] sysenter_do_call+0x12/0x35
[ 172.040770][] 0x
[ 172.040787]
[ 172.040788] - #0 (mm-mmap_sem){}:
[ 172.040796][c014a36a] validate_chain+0x5aa/0x1150
[ 172.040804][c014c00c] __lock_acquire+0x31c/0x600
[ 172.040811][c014c367] lock_acquire+0x77/0xa0
[ 172.040819][c01759ac] might_fault+0x7c/0xa0
[ 172.040825][c02b0664] i915_emit_box+0x24/0x290
[ 172.040832][c02b12e2] i915_cmdbuffer+0x352/0x530
[ 172.040840][c02a147d] drm_ioctl+0xed/0x2d0
[ 172.040847][c01931a7] vfs_ioctl+0x67/0x70
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
--- You are receiving this mail because: ---
You are the assignee for the bug, or are watching the assignee.
--
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
--
___
Dri-devel mailing list
Dri-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #3 from r...@sisk.pl 2009-02-05 07:59 --- On Thursday 05 February 2009, Wang Chen wrote: Rafael J. Wysocki said the following on 2009-2-4 18:23: This message has been generated automatically as a part of a report of recent regressions. The following bug entry is on the current list of known regressions from 2.6.28. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12419 Subject : possible circular locking dependency on i915 dma Submitter : Wang Chen wangc...@cn.fujitsu.com Date: 2009-01-08 14:11 (28 days old) References : http://marc.info/?l=linux-kernelm=123142399720125w=4 status not changed. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 --- Comment #2 from r...@sisk.pl 2009-02-03 15:02 --- On Tuesday 20 January 2009, Wang Chen wrote: Rafael J. Wysocki said the following on 2009-1-20 5:32: This message has been generated automatically as a part of a report of recent regressions. The following bug entry is on the current list of known regressions from 2.6.28. Please verify if it still should be listed and let me know (either way). Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12419 Subject : possible circular locking dependency on i915 dma Submitter : Wang Chen wangc...@cn.fujitsu.com Date: 2009-01-08 14:11 (12 days old) References : http://marc.info/?l=linux-kernelm=123142399720125w=4 This regression is still there in mainline. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
[Bug 12419] possible circular locking dependency on i915 dma
http://bugzilla.kernel.org/show_bug.cgi?id=12419 theholyet...@googlemail.com changed: What|Removed |Added CC||theholyet...@googlemail.com --- Comment #1 from theholyet...@googlemail.com 2009-01-30 01:35 --- Hello, I see something similar when I run GL apps except in my traces I have i915_gem_execbuffer instead of i915_cmdbuffer --- is this the same issue? -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug, or are watching the assignee. -- This SF.net email is sponsored by: SourcForge Community SourceForge wants to tell your story. http://p.sf.net/sfu/sf-spreadtheword -- ___ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
