(CCs added) On Fri, Apr 24, 2009 at 10:21:13AM +0300, Meelis Roos wrote: > This 2.6.30-rc3 running on SMP sparc64. Loading the qla1280 pci scsi > driver causes a firmware load that in turn causes a lockdep warning like > below. Firmware loading still seems to work fine. [..] > Apr 23 22:20:39 korvits kernel: [ 143.912020] qla1280: QLA1040 found on PCI bus 0, dev 3 > Apr 23 22:20:39 korvits kernel: [ 143.971811] PCI: Enabling device: (0002:00:03.0), cmd 7 > Apr 23 22:20:39 korvits kernel: [ 143.972842] ------------[ cut here ]------------ > Apr 23 22:20:39 korvits kernel: [ 144.026699] WARNING: at kernel/lockdep.c:2280 lockdep_trace_alloc+0xbc/0x100() > Apr 23 22:20:39 korvits kernel: [ 144.113197] Modules linked in: > Apr 23 22:20:39 korvits kernel: [ 144.149622] Call Trace: > Apr 23 22:20:39 korvits kernel: [ 144.178818] [000000000045d7cc] warn_slowpath+0x6c/0xa0 > Apr 23 22:20:39 korvits kernel: [ 144.241329] [00000000004886fc] lockdep_trace_alloc+0xbc/0x100 > Apr 23 22:20:39 korvits kernel: [ 144.311140] [00000000004e67b8] kmem_cache_alloc+0x18/0x160 > Apr 23 22:20:39 korvits kernel: [ 144.377821] [0000000000604d68] _request_firmware+0x28/0x520 > Apr 23 22:20:39 korvits kernel: [ 144.445533] [000000000060531c] request_firmware+0x1c/0x40 > Apr 23 22:20:39 korvits kernel: [ 144.511180] [000000000061ba98] qla1280_load_firmware+0x2f8/0x7e0 > Apr 23 22:20:39 korvits kernel: [ 144.584108] [00000000006e1498] qla1280_probe_one+0x390/0x7a8 > Apr 23 22:20:39 korvits kernel: [ 144.652874] [00000000005ce55c] local_pci_probe+0x1c/0x40 > Apr 23 22:20:39 korvits kernel: [ 144.717468] [00000000005ce8e0] pci_device_probe+0x60/0xa0 > Apr 23 22:20:39 korvits kernel: [ 144.783106] [00000000005fff78] driver_probe_device+0x78/0x1a0 > Apr 23 22:20:39 korvits kernel: [ 144.852911] [000000000060012c] __driver_attach+0x8c/0xa0 > Apr 23 22:20:39 korvits kernel: [ 144.917505] [00000000005ff6c8] bus_for_each_dev+0x68/0xa0 > Apr 23 22:20:39 korvits kernel: [ 144.983141] [00000000005ffde0] driver_attach+0x20/0x40 > Apr 23 22:20:39 korvits kernel: [ 145.045657] [00000000005fee64] bus_add_driver+0x104/0x280 > Apr 23 22:20:39 korvits kernel: [ 145.111292] [0000000000600454] driver_register+0x74/0x180 > Apr 23 22:20:39 korvits kernel: [ 145.176928] [00000000005cedb4] __pci_register_driver+0x54/0xe0 > Apr 23 22:20:39 korvits kernel: [ 145.247808] ---[ end trace 6edbdc497698d192 ]--- > Apr 23 22:20:39 korvits kernel: [ 145.302997] qla1280 0002:00:03.0: firmware: using built-in firmware qlogic/1040.bin This is because the driver calls request_firmware() with interrupts disabled. Rabin -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
