Hi It occured during shutdown process: sd 0:2:0:0: [sda] Synchronizing SCSI cache ioatdma 0000:00:08.0: Removing dma and dca services ------------[ cut here ]------------ WARNING: at drivers/dma/dmaengine.c:665 dma_async_device_unregister+0x90/0xd0() dma_async_device_unregister called while 1 clients hold a reference Modules linked in: Pid: 12246, comm: reboot Tainted: G W 2.6.28-rc5-next-20081121 #8 Call Trace: [<ffffffff80236b7c>] warn_slowpath+0xae/0xd5 [<ffffffff80298414>] ? add_partial+0x1a/0x50 [<ffffffff804588e6>] ? dma_async_device_unregister+0x22/0xd0 [<ffffffff802576c4>] ? trace_hardirqs_on_caller+0x1f/0x153 [<ffffffff804e4829>] ? __mutex_lock_common+0x371/0x3be [<ffffffff804588e6>] ? dma_async_device_unregister+0x22/0xd0 [<ffffffff802576c4>] ? trace_hardirqs_on_caller+0x1f/0x153 [<ffffffff80257805>] ? trace_hardirqs_on+0xd/0xf [<ffffffff804e4a51>] ? __mutex_unlock_slowpath+0x13c/0x145 [<ffffffff80458954>] dma_async_device_unregister+0x90/0xd0 [<ffffffff80459b62>] ioat_dma_remove+0x1c/0xd0 [<ffffffff80459992>] ioat_shutdown_functionality+0x66/0x74 [<ffffffff80388ad2>] pci_device_shutdown+0x24/0x38 [<ffffffff803e042c>] device_shutdown+0x50/0x99 [<ffffffff80245612>] kernel_restart_prepare+0x27/0x2e [<ffffffff80245652>] kernel_restart+0x11/0x44 [<ffffffff802457af>] sys_reboot+0x11d/0x149 [<ffffffff8024d3f1>] ? hrtimer_nanosleep+0x104/0x119 [<ffffffff8024c9f6>] ? hrtimer_wakeup+0x0/0x21 [<ffffffff804e4ab5>] ? do_nanosleep+0x50/0xb6 [<ffffffff802576c4>] ? trace_hardirqs_on_caller+0x1f/0x153 [<ffffffff804e583a>] ? trace_hardirqs_on_thunk+0x3a/0x3f [<ffffffff8020b75b>] system_call_fastpath+0x16/0x1b ---[ end trace 4eaa2a86a8e2da22 ]--- ------------[ cut here ]------------ WARNING: at drivers/base/core.c:122 device_release+0x66/0x68() Device 'dma0chan0' does not have a release() function, it is broken and must be fixed. Modules linked in: Pid: 12246, comm: reboot Tainted: G W 2.6.28-rc5-next-20081121 #8 Call Trace: [<ffffffff80236b7c>] warn_slowpath+0xae/0xd5 [<ffffffff802e4812>] ? release_sysfs_dirent+0x7d/0x9d [<ffffffff802e484a>] ? __sysfs_put+0x18/0x1a [<ffffffff802e4aa3>] ? sysfs_addrm_finish+0x233/0x27b [<ffffffff802af85f>] ? ifind+0x2c/0x84 [<ffffffff80257805>] ? trace_hardirqs_on+0xd/0xf [<ffffffff804e44a4>] ? mutex_trylock+0x146/0x15a [<ffffffff802e4668>] ? sysfs_addrm_start+0x78/0xa5 [<ffffffff802e4668>] ? sysfs_addrm_start+0x78/0xa5 [<ffffffff8037657c>] ? kobj_kset_leave+0x1e/0x57 [<ffffffff803e0b57>] device_release+0x66/0x68 [<ffffffff8037663e>] kobject_release+0x52/0x68 [<ffffffff803765ec>] ? kobject_release+0x0/0x68 [<ffffffff80377429>] kref_put+0x43/0x4f [<ffffffff80376546>] kobject_put+0x47/0x4b [<ffffffff803e048a>] put_device+0x15/0x17 [<ffffffff803e12a3>] device_unregister+0x19/0x1e [<ffffffff80458968>] dma_async_device_unregister+0xa4/0xd0 [<ffffffff80459b62>] ioat_dma_remove+0x1c/0xd0 [<ffffffff80459992>] ioat_shutdown_functionality+0x66/0x74 [<ffffffff80388ad2>] pci_device_shutdown+0x24/0x38 [<ffffffff803e042c>] device_shutdown+0x50/0x99 [<ffffffff80245612>] kernel_restart_prepare+0x27/0x2e [<ffffffff80245652>] kernel_restart+0x11/0x44 [<ffffffff802457af>] sys_reboot+0x11d/0x149 [<ffffffff8024d3f1>] ? hrtimer_nanosleep+0x104/0x119 [<ffffffff8024c9f6>] ? hrtimer_wakeup+0x0/0x21 [<ffffffff804e4ab5>] ? do_nanosleep+0x50/0xb6 [<ffffffff802576c4>] ? trace_hardirqs_on_caller+0x1f/0x153 [<ffffffff804e583a>] ? trace_hardirqs_on_thunk+0x3a/0x3f [<ffffffff8020b75b>] system_call_fastpath+0x16/0x1b ---[ end trace 4eaa2a86a8e2da22 ]--- ------------[ cut here ]------------ WARNING: at drivers/base/core.c:122 device_release+0x66/0x68() Device 'dma0chan1' does not have a release() function, it is broken and must be fixed. Modules linked in: Pid: 12246, comm: reboot Tainted: G W 2.6.28-rc5-next-20081121 #8 I guess it was tainted by previous warning on hpet: hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 hpet0: 3 comparators, 64-bit 14.318180 MHz counter ODEBUG: object is on stack, but not annotated ------------[ cut here ]------------ WARNING: at lib/debugobjects.c:251 __debug_object_init+0x2bf/0x36d() Modules linked in: Pid: 1, comm: swapper Not tainted 2.6.28-rc5-next-20081121 #8 Call Trace: -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
