Messages in this thread | | | Date | Tue, 28 Oct 2008 08:59:45 +0530 | From | Nageswara R Sastry <> | Subject | Re: [BUG] While changing the cpufreq governor, kernel hits a bug in workqueue.c |
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Nageswara R Sastry wrote: > Any updates on this bug. Thanks in advance for your coordination. > > Johannes Weiner wrote: >>> I have not yet looked at cpufreq_conservative... >>> >>> Thanks for your patience and insistence,
From long time I didn't see any activity related to this bug so posting again after testing on the latest stable kernel.
------------[ cut here ]------------ kernel BUG at kernel/workqueue.c:240! invalid opcode: 0000 [#1] SMP Modules linked in: cpufreq_powersave cpufreq_conservative cpufreq_userspace usb_ storage usbhid ehci_hcd ohci_hcd uhci_hcd usbcore
Pid: 236, comm: kondemand/1 Not tainted (2.6.27.2 #1) EIP: 0060:[<c0131c6e>] EFLAGS: 00010286 CPU: 1 EIP is at queue_delayed_work_on+0x24/0xa6 EAX: 00000000 EBX: c3a3c9d4 ECX: c3a3c9d4 EDX: 00000000 ESI: c3a3c9f0 EDI: f7a45658 EBP: 00000001 ESP: f7a53f3c DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process kondemand/1 (pid: 236, ti=f7a52000 task=f7904270 task.ti=f7a52000) Stack: 00000000 f7a43d08 c3a3c9c0 f7ab5c68 c0424ee5 00000040 00000000 00000001 00000040 00000000 00000002 ffffffff 00000000 ffffffff c3a3c9d8 f7a43d08 c3a3c9d4 f7a53f9c c013156d 00000000 00000002 00000000 c013152f c0424cbb Call Trace: [<c0424ee5>] do_dbs_timer+0x22a/0x24a [<c013156d>] run_workqueue+0xbf/0x18a [<c013152f>] run_workqueue+0x81/0x18a [<c0424cbb>] do_dbs_timer+0x0/0x24a [<c0131e25>] worker_thread+0x0/0xbd [<c0131ed8>] worker_thread+0xb3/0xbd [<c013423c>] autoremove_wake_function+0x0/0x2d [<c013418a>] kthread+0x38/0x5e [<c0134152>] kthread+0x0/0x5e [<c0104503>] kernel_thread_helper+0x7/0x10 ======================= Code: 6c c0 e9 7a ff ff ff 55 89 c5 57 89 d7 56 53 89 cb 8d 71 1c f0 0f ba 29 00 19 c0 31 d2 85 c0 0f 85 81 00 00 00 83 79 1c 00 74 04 <0f> 0b eb fe 8d 41 04 39 41 04 74 04 0f 0b eb fe 8b 54 24 10 89 EIP: [<c0131c6e>] queue_delayed_work_on+0x24/0xa6 SS:ESP 0068:f7a53f3c ---[ end trace 69cb0cd122ebfb9d ]---
P.S. This time it took just 2 minutes to reproduce this bug. Previously it used to happen after 30 minutes.
Please let me know if you need more details.
Thanks a lot for your coordination.
Regards R.Nageswara Sastry
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