Description of problem: Matthew Garrett reported this problem: I'm seeing suspend hang at the process freezer stage since this went in. The symptoms are: stopping tasks timed out after 120 seconds (1 tasks remaining): khungtaskd Restarting tasks...<6> Strange, khungtaskd not stopped Test machine is an XW9400, where I expect suspend to fail for half a dozen other reasons anyway, but this one is new. Expected results: Shoud not get that error message. Additional info:
See also the discussion here: http://post-office.corp.redhat.com/archives/rhkernel-list/2009-December/thread.html#01796
*** Bug 550236 has been marked as a duplicate of this bug. ***
*** Bug 549958 has been marked as a duplicate of this bug. ***
*** Bug 549265 has been marked as a duplicate of this bug. ***
Dupe of the bug 513203 ?
*** Bug 548784 has been marked as a duplicate of this bug. ***
Setting flags to get it on pm's radar...
*** Bug 553153 has been marked as a duplicate of this bug. ***
*** Bug 561047 has been marked as a duplicate of this bug. ***
Shouldn't this be against 5.5?
Event posted on 02-03-2010 03:20am EST by arindam.nath File uploaded: fix_khungtaskd_cannot_freeze_during_S4.patch This event sent from IssueTracker by jkachuck issue 463493 it_file 358903
Event posted on 02-03-2010 03:20am EST by arindam.nath The attached patch fixes this issue. Root Cause: When system prepares to enter S3 (or S4), it tries to freeze all user processes and kernel threads. It sets the PF_FREEZE flag in the struct task_struct before sending a wake up signal to the kernel thread. The kernel thread should in-turn check the value of this flag after being woken up to confirm whether it is a request to freeze and take appropriate action. Status set to: Waiting on Tech This event sent from IssueTracker by jkachuck issue 463493
(In reply to comment #13) > Event posted on 02-03-2010 03:20am EST by arindam.nath > > File uploaded: fix_khungtaskd_cannot_freeze_during_S4.patch > > This event sent from IssueTracker by jkachuck > issue 463493 > it_file 358903 Thanks but we already fixed this, see: http://post-office.corp.redhat.com/archives/rhkernel-list/2009-December/msg01859.html
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
*** Bug 560826 has been marked as a duplicate of this bug. ***
Can also reproduce using HP Compaq 6510b laptop
Still not fixed with post 5.5-beta kernel 2.6.18-187.el5.
Hey, I think it is still not in beta, but it will be in 5.5, from next build. Thanks.
verified on HP 6510b x86_64 kernel -189 .. can suspend/resume
kernel-2.6.18-189.el5 verified on ThinkPad T60/Z60/T43/T41/SL500 32bit (normal and PAE) and 64bit kernels
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2010-0178.html