* Re: lockdep warning from firmware loader
[not found] <Pine.SOC.4.64.0904241017380.219@math.ut.ee>
@ 2009-04-30 21:48 ` Rabin Vincent
0 siblings, 0 replies; only message in thread
From: Rabin Vincent @ 2009-04-30 21:48 UTC (permalink / raw)
To: Meelis Roos; +Cc: Linux Kernel list, jaswinderrajput, linux-scsi
(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
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[not found] <Pine.SOC.4.64.0904241017380.219@math.ut.ee>
2009-04-30 21:48 ` lockdep warning from firmware loader Rabin Vincent
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