2009/8/25 Bjorn Helgaas <bjorn.helgaas@xxxxxx>: > On Tuesday 25 August 2009 02:33:30 pm you wrote: >> 2009/8/25 Bjorn Helgaas <bjorn.helgaas@xxxxxx>: >> > On Tuesday 25 August 2009 02:10:58 am Zdenek Kabelac wrote: >> >> Now with 2.6.31-rc7 (3edf2fb9d80a46d6c32ba12547a42419845b4b76) >> >> I'm getting this INFO trace - also I've noticed complete reset during resume >> >> which could be eventually related to this >> > Do you have any evidence that points to thinkpad_acpi? I looked >> > at the recent changes there, and I don't see anything obviously >> > related to kacpid or deferred work. >> > >> >> Well I've never seen this INFO trace before - also I'm not sure I >> could reliable retest it - might be coincidence of suspend out of port >> replicator and resume while being attached on it - however I do this >> relatively often and I start to see this after I' started to use -rc7 >> kernel. >> >> My guess is purely based on the fact that commit touching functions >> from INFO trace was recently merged to main tree. >> >> If there will be some time I could try to make few tests for suspend >> resume - but I hope the trace would be enough for analysis. > Well definitelly I do not have a reliable test case to deterministically trigger this INFO trace, but I think from the trace it looks like the acpi_os_wait_events_complete calls flush_workqueue which again calls acpi_os_execute_hp_deferred which again tries to invoke flush_workqueue - so is that correct ? (__acpi_os_execute looks somewhat cryptic in selection what would be called) This is the stack traceback cut from my first post: [<ffffffff81064df0>] ? flush_workqueue+0x0/0xc0 [<ffffffff81261532>] ? acpi_os_execute_hp_deferred+0x0/0x43 [<ffffffff81064e4f>] flush_workqueue+0x5f/0xc0 [<ffffffff81064df0>] ? flush_workqueue+0x0/0xc0 [<ffffffff81261524>] acpi_os_wait_events_complete+0x15/0x23 [<ffffffff81261561>] acpi_os_execute_hp_deferred+0x2f/0x43 [<ffffffff810651d4>] worker_thread+0x1e4/0x3f0 So it looks like this issue is releated to commit: c02256be79a1a3557332ac51e653d574a2a7d2b5 Hopefully the author would be able to fix this ? Zdenek -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
