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Hi, On 09/07/06, Andrew Morton <akpm@osdl.org> wrote: > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc1/2.6.18-rc1-mm1/ > This looks like a problem with cpufreq. ======================================================= [ INFO: possible circular locking dependency detected ] ------------------------------------------------------- cpuspeed/1426 is trying to acquire lock: (&inode->i_data.tree_lock){.+..}, at: [<c0151dc7>] find_get_page+0x12/0x70 but task is already holding lock: (&mm->mmap_sem){----}, at: [<c0116cab>] do_page_fault+0x10d/0x4ea which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (cpucontrol){--..}: [<c0139a55>] lock_acquire+0x71/0x91 [<c02ee288>] __mutex_lock_slowpath+0xd2/0x2f5 [<c02ee4c7>] mutex_lock+0x1c/0x1f [<c013dd3b>] __lock_cpu_hotplug+0x34/0x4c [<c013dd6c>] lock_cpu_hotplug+0xa/0xc [<c029b587>] __cpufreq_driver_target+0x15/0x50 [<c029c3ca>] cpufreq_governor_performance+0x1a/0x20 [<c029a89b>] __cpufreq_governor+0x95/0x18c [<c029aa72>] __cpufreq_set_policy+0xe0/0x118 [<c029af49>] cpufreq_set_policy+0x2d/0x6f [<c029bc45>] cpufreq_add_dev+0x3ee/0x4f3 [<c024dccb>] sysdev_driver_register+0x5e/0x9e [<c029be70>] cpufreq_register_driver+0x80/0xf4 [<fdba202a>] 0xfdba202a [<c0140f22>] sys_init_module+0xa6/0x21d [<c0103179>] sysenter_past_esp+0x56/0x8d -> #0 (&inode->i_data.tree_lock){.+..}: [<c0139a55>] lock_acquire+0x71/0x91 [<c02ee288>] __mutex_lock_slowpath+0xd2/0x2f5 [<c02ee4c7>] mutex_lock+0x1c/0x1f [<c029b7f2>] store_scaling_governor+0x14a/0x1a2 [<c029b223>] store+0x37/0x48 [<c01a9f4b>] sysfs_write_file+0xa6/0xcc [<c0172dab>] vfs_write+0xc9/0x172 [<c017341d>] sys_write+0x3b/0x71 [<c0103179>] sysenter_past_esp+0x56/0x8d other info that might help us debug this: 1 lock held by cpuspeed/1426: #0: (cpucontrol){--..}, at: [<c02ee4c7>] mutex_lock+0x1c/0x1f stack backtrace: [<c01041f0>] show_trace_log_lvl+0x54/0x101 [<c0104827>] show_trace+0xd/0x10 [<c0104949>] dump_stack+0x19/0x1b [<c0138b99>] print_circular_bug_tail+0x59/0x64 [<c013950a>] __lock_acquire+0x966/0xb39 [<c0139a55>] lock_acquire+0x71/0x91 [<c02ee288>] __mutex_lock_slowpath+0xd2/0x2f5 [<c02ee4c7>] mutex_lock+0x1c/0x1f [<c029b7f2>] store_scaling_governor+0x14a/0x1a2 [<c029b223>] store+0x37/0x48 [<c01a9f4b>] sysfs_write_file+0xa6/0xcc [<c0172dab>] vfs_write+0xc9/0x172 [<c017341d>] sys_write+0x3b/0x71 [<c0103179>] sysenter_past_esp+0x56/0x8d Here is a dmesg log http://www.stardust.webpages.pl/files/mm/2.6.18-rc1-mm1/mm-dmesg Here is a config file http://www.stardust.webpages.pl/files/mm/2.6.18-rc1-mm1/mm-config Regards, Michal -- Michal K. K. Piotrowski LTG - Linux Testers Group (http://www.stardust.webpages.pl/ltg/wiki/) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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