Subject : INFO: possible circular locking in the resume Submitter : "Zdenek Kabelac" <zdenek.kabelac@gmail.com> Date : 2008-02-27 References : http://lkml.org/lkml/2008/2/26/479 Handled-By : Gautham R Shenoy <ego@in.ibm.com> This entry is being used for tracking a regression from 2.6.24. Please don't close it until the problem is fixed in the mainline.
Created attachment 15096 [details] script to offline and online all the cpus on a system
Created attachment 15097 [details] script to change the cpufreq governor
Easier way to recreate the bug would be to run the above mentioned scripts in parallel.
Zdenek, can you please check if the problem is still present/reproducible?
Well at this moment with current git tree 2.6.25-rc6 actually I've got the problem that after resume my MMC reader doesn't work at all.Yet I've not had time to bisect the kernel for problematic patch - will do in a short time - unless its already known issue? I'm not sure if this problem is connected to MMC - but I can say but I've not notice this exact backtrace for some time - so maybe it is fixed.
This warning seems to be fixed - now I could see in the log just these messages: [42597.114310] wlan0: switched to short barker preamble (BSSID=00:11:d8:da:65:40) [43222.478903] mmc0: card 5a61 removed [43552.704815] mmc0: new SD card at address 5a61 [43552.706617] mmcblk0: mmc0:5a61 S016B 14560KiB [43552.706841] mmcblk0: p1 [43224.269009] mmcblk0: error -123 sending read/write command [43224.269009] end_request: I/O error, dev mmcblk0, sector 0 [43224.269009] Buffer I/O error on device mmcblk0, logical block 0 [43224.269009] mmcblk0: error -123 sending read/write command [43224.269009] end_request: I/O error, dev mmcblk0, sector 0 [43224.269009] Buffer I/O error on device mmcblk0, logical block 0 [43224.269009] end_request: I/O error, dev mmcblk0, sector 8 [43224.269009] Buffer I/O error on device mmcblk0, logical block 1 [43224.269009] end_request: I/O error, dev mmcblk0, sector 16 [43224.269009] Buffer I/O error on device mmcblk0, logical block 2 [43224.269009] end_request: I/O error, dev mmcblk0, sector 24 [43224.269009] Buffer I/O error on device mmcblk0, logical block 3 [43224.270342] mmcblk0: error -123 sending read/write command [43224.270381] end_request: I/O error, dev mmcblk0, sector 57 [43224.270384] Buffer I/O error on device mmcblk0p1, logical block 0 ... But reported problem is not reproducible.
Closing. Please reopen if the bug reappears.