This warning isn't new, and I don't get it on every boot. See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=590327 for some more info. 2.6.35-rc5-amd64 (Debian 2.6.35~rc5-1~experimental.1): [ 1.572006] ------------[ cut here ]------------ [ 1.572042] WARNING: at /build/buildd-linux-2.6_2.6.35~rc5-1~experimental.1-i386-gQzGH6/linux-2.6-2.6.35~rc5/debian/build/source_i386_none/kernel/irq/manage.c:290 enable_irq+0x3e/0x64() [ 1.572085] Hardware name: EP45T-EXTREME [ 1.572115] Unbalanced enable for IRQ 19 [ 1.572144] Modules linked in: hid uhci_hcd ahci libahci sym53c8xx(+) scsi_transport_spi libata e1000(+) it8213(+) firewire_ohci firewire_core crc_itu_t scsi_mod ide_core r8169 mii ehci_hcd thermal thermal_sys igb dca usbcore nls_base [ 1.572731] Pid: 209, comm: modprobe Not tainted 2.6.35-rc5-amd64 #1 [ 1.572759] Call Trace: [ 1.572788] [<ffffffff810441f3>] ? warn_slowpath_common+0x78/0x8c [ 1.572817] [<ffffffff810442a6>] ? warn_slowpath_fmt+0x45/0x4a [ 1.572850] [<ffffffffa001e388>] ? do_probe+0x1ce/0x1ea [ide_core] [ 1.572879] [<ffffffff8108be75>] ? enable_irq+0x3e/0x64 [ 1.572910] [<ffffffffa001e900>] ? ide_probe_port+0x55c/0x589 [ide_core] [ 1.572942] [<ffffffffa001ef1a>] ? ide_host_register+0x273/0x60f [ide_core] [ 1.572974] [<ffffffffa002300d>] ? ide_pci_init_two+0x5b6/0x680 [ide_core] [ 1.573004] [<ffffffff8118222c>] ? idr_get_empty_slot+0x16a/0x250 [ 1.573033] [<ffffffff81036ad8>] ? update_curr+0xb1/0x159 [ 1.573062] [<ffffffff8118222c>] ? idr_get_empty_slot+0x16a/0x250 [ 1.573090] [<ffffffff8118240b>] ? ida_get_new_above+0xf9/0x1b7 [ 1.573120] [<ffffffff811374ca>] ? sysfs_find_dirent+0x2f/0x44 [ 1.573148] [<ffffffff81137eb6>] ? sysfs_addrm_finish+0x29/0xb8 [ 1.573178] [<ffffffff81198181>] ? local_pci_probe+0x12/0x16 [ 1.573206] [<ffffffff81198f70>] ? pci_device_probe+0xc2/0xef [ 1.573236] [<ffffffff8121c1ea>] ? driver_sysfs_add+0x42/0x69 [ 1.573264] [<ffffffff8121c32b>] ? driver_probe_device+0xa8/0x138 [ 1.573292] [<ffffffff8121c40a>] ? __driver_attach+0x4f/0x6f [ 1.573321] [<ffffffff8121c3bb>] ? __driver_attach+0x0/0x6f [ 1.573349] [<ffffffff8121b9d8>] ? bus_for_each_dev+0x44/0x78 [ 1.573377] [<ffffffff8121be30>] ? bus_add_driver+0xa8/0x1f0 [ 1.573406] [<ffffffff8121c6b1>] ? driver_register+0x90/0xf8 [ 1.573434] [<ffffffff811991ba>] ? __pci_register_driver+0x4e/0xbe [ 1.573464] [<ffffffff8105f283>] ? __blocking_notifier_call_chain+0x58/0x63 [ 1.573493] [<ffffffffa0079000>] ? it8213_ide_init+0x0/0x20 [it8213] [ 1.573523] [<ffffffff81002064>] ? do_one_initcall+0x63/0x175 [ 1.573552] [<ffffffff8107086e>] ? sys_init_module+0x97/0x1d5 [ 1.573581] [<ffffffff81031342>] ? ia32_sysret+0x0/0x5 [ 1.573609] ---[ end trace 45eb7d0c4325a91a ]--- [ 1.573661] hda: host max PIO4 wanted PIO255(auto-tune) selected PIO4 [ 1.573808] hda: UDMA/100 mode selected [ 1.574046] ide0 at 0xd200-0xd207,0xd302 on irq 19
4.003160] ------------[ cut here ]------------ [ 4.003171] WARNING: at kernel/irq/manage.c:290 __enable_irq+0x2f/0x55() [ 4.003174] Hardware name: P55A-UD3 [ 4.003176] Unbalanced enable for IRQ 19 [ 4.003179] Modules linked in: snd_hda_codec_nvhdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec nouveau snd_hwdep snd_pcm ttm option snd_timer usb_wwan snd usbserial drm_kms_helper r8169 xhci_hcd drm uhci_hcd it8213(+) parport_pc mii ide_core soundcore snd_page_alloc ehci_hcd usbcore tpm_tis i2c_algo_bit video parport tpm output tpm_bios evdev i2c_i801 pcspkr i2c_core shpchp nls_base processor button pci_hotplug ext4 mbcache jbd2 crc16 sd_mod crc_t10dif ahci libahci libata scsi_mod thermal thermal_sys [ 4.003230] Pid: 496, comm: modprobe Not tainted 2.6.36.2 #1 [ 4.003233] Call Trace: [ 4.003239] [<c1034bad>] ? warn_slowpath_common+0x6a/0x7b [ 4.003245] [<c107314d>] ? __enable_irq+0x2f/0x55 [ 4.003250] [<c1034c24>] ? warn_slowpath_fmt+0x28/0x2c [ 4.003255] [<c107314d>] ? __enable_irq+0x2f/0x55 [ 4.003259] [<c1073415>] ? enable_irq+0x31/0x4c [ 4.003270] [<fb915145>] ? ide_probe_port+0x4b7/0x4de [ide_core] [ 4.003280] [<fb915641>] ? ide_host_register+0x204/0x4e7 [ide_core] [ 4.003290] [<fb918f0b>] ? ide_pci_init_two+0x4b6/0x560 [ide_core] [ 4.003298] [<c1019b31>] ? native_smp_send_reschedule+0x3a/0x3b [ 4.003303] [<c1027abf>] ? resched_task+0x56/0x58 [ 4.003312] [<c113b340>] ? idr_get_empty_slot+0x149/0x217 [ 4.003314] [<c113b340>] ? idr_get_empty_slot+0x149/0x217 [ 4.003316] [<c113b4df>] ? ida_get_new_above+0xd1/0x16c [ 4.003319] [<c10fd8a6>] ? sysfs_find_dirent+0x25/0x36 [ 4.003322] [<c11caf09>] ? __pm_runtime_set_status+0x134/0x14c [ 4.003326] [<fb918fbf>] ? ide_pci_init_one+0xa/0xc [ide_core] [ 4.003328] [<c114d4ee>] ? local_pci_probe+0x34/0x74 [ 4.003330] [<c114def1>] ? pci_device_probe+0x41/0x63 [ 4.003333] [<c11c6464>] ? driver_probe_device+0x8c/0x110 [ 4.003335] [<c11c6528>] ? __driver_attach+0x40/0x5b [ 4.003337] [<c11c5cc5>] ? bus_for_each_dev+0x37/0x5f [ 4.003339] [<c11c631a>] ? driver_attach+0x11/0x13 [ 4.003340] [<c11c64e8>] ? __driver_attach+0x0/0x5b [ 4.003342] [<c11c6040>] ? bus_add_driver+0x87/0x1bb [ 4.003344] [<c113bf94>] ? kset_find_obj+0x20/0x4a [ 4.003347] [<fc59e000>] ? it8213_ide_init+0x0/0x14 [it8213] [ 4.003349] [<c11c6744>] ? driver_register+0x7a/0xd9 [ 4.003351] [<fc59e000>] ? it8213_ide_init+0x0/0x14 [it8213] [ 4.003353] [<c114e0bc>] ? __pci_register_driver+0x33/0x89 [ 4.003355] [<fc59e000>] ? it8213_ide_init+0x0/0x14 [it8213] [ 4.003357] [<c1003069>] ? do_one_initcall+0x68/0x10f [ 4.003360] [<c105d5e5>] ? sys_init_module+0xc86/0xe15 [ 4.003365] [<c100845f>] ? sysenter_do_call+0x12/0x28 [ 4.003366] ---[ end trace ac817a1ed0b76f1f ]---
Compile kernel without ATA/ATAPI/MFM/RLL support (DEPRECATED) solve my problem.