[Bugme-new] [Bug 19422] New: [resume] one out of 30 suspend cycles locks the system

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=19422

           Summary: [resume] one out of 30 suspend cycles locks the system
           Product: Power Management
           Version: 2.5
    Kernel Version: 2.6.35
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Hibernation/Suspend
        AssignedTo: power-management_other at kernel-bugs.osdl.org
        ReportedBy: tmezzadra at gmail.com
        Regression: No


Created an attachment (id=32192)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=32192)
dmesg from an about to hang system

im not sure if this is 1 out of 30, more, less, or what actually triggers this
issue.

but with this laptop. every once in a while, after resuming (system comes back)
xorg freezes after several seconds.

this has been happening since...2.6.20's kernels, but i have never been able to
detect the issue or it was something else entirely and it got introduced in
later versions.

ive been trying to collect data in the past to report this but i have been
unable to do so due to the hardness of the locking. (alt-sysrq does not work
when it locks).

now ive accelerated the resume cycle disabling some actions. and managed to
grab a dmesg dump, which im attaching

if i switch back to a vt before the hang, i can use the system (with partially
working hardware, eg. wireless does not work).

the dmesg has a stack trace in it.

if there is any other info i can provide, please let me know.

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