mpt fusion device warning 5 times

From: KOSAKI Motohiro
Date: Wed Dec 10 2008 - 20:16:09 EST

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Hi Eric,

> Hi all,
>
> Changes since 20081209:
>
> Undropped tree:
> mmc
>
> Dropped trees (temporarily):
> v4l-dvb (build problem)
> sound (build problem)
> drm (build problem)
> semaphore-removal (due to unfixed conflicts against Linus' tree)
> cpu_alloc (build problem)
> perfmon3 (concerns from the x86 team)
> audit (difficult conflicts)
> staging (build failure)
>
> The mtd tree transferred its conflict to the driver-core tree (by being
> merged into Linus' tree).
>
> The sound tree gained a build failure and was dropped.

my ia64 box output following warnings.

The init_timer() expect timer object stay in heap, but the timer of mpt stay in stack.
Is this a real bug?

====================================================
ODEBUG: object is on stack, but not annotated
------------[ cut here ]------------
WARNING: at lib/debugobjects.c:253 __debug_object_init+0x420/0x840()
Modules linked in: mptspi(+) mptscsih mptbase ehci_hcd ohci_hcd uhci_hcd usbcore

Call Trace:
[<a000000100017940>] show_stack+0x80/0xa0
sp=e0000040c30af760 bsp=e0000040c30a1450
[<a000000100017990>] dump_stack+0x30/0x60
sp=e0000040c30af930 bsp=e0000040c30a1438
[<a0000001000a96e0>] warn_slowpath+0x140/0x1a0
sp=e0000040c30af930 bsp=e0000040c30a13c8
[<a0000001003682a0>] __debug_object_init+0x420/0x840
sp=e0000040c30afa60 bsp=e0000040c30a1370
[<a000000100368790>] debug_object_init+0x50/0x80
sp=e0000040c30afa70 bsp=e0000040c30a1348
[<a0000001000c3430>] init_timer+0x30/0x60
sp=e0000040c30afa70 bsp=e0000040c30a1328
[<a000000201a4aa30>] mpt_config+0x390/0x6a0 [mptbase]
sp=e0000040c30afa70 bsp=e0000040c30a12c8
[<a000000201a4d7d0>] mpt_do_ioc_recovery+0x1710/0x2ee0 [mptbase]
sp=e0000040c30afaa0 bsp=e0000040c30a11f0
[<a000000201a52230>] mpt_attach+0x890/0x1f40 [mptbase]
sp=e0000040c30afd70 bsp=e0000040c30a1178
[<a000000201b92650>] mptspi_probe+0x30/0x7e0 [mptspi]
sp=e0000040c30afd80 bsp=e0000040c30a1128
[<a00000010037a770>] local_pci_probe+0x70/0xa0
sp=e0000040c30afd80 bsp=e0000040c30a1108
[<a00000010037b110>] pci_device_probe+0x310/0x360
sp=e0000040c30afd80 bsp=e0000040c30a10d0
[<a00000010046d370>] driver_probe_device+0x190/0x3a0
sp=e0000040c30afde0 bsp=e0000040c30a1088
[<a00000010046d660>] __driver_attach+0xe0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1050
[<a00000010046b900>] bus_for_each_dev+0xc0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1018
[<a00000010046cf80>] driver_attach+0x40/0x60
sp=e0000040c30afdf0 bsp=e0000040c30a0ff0
[<a00000010046c930>] bus_add_driver+0x370/0x4a0
sp=e0000040c30afdf0 bsp=e0000040c30a0fa8
[<a00000010046dad0>] driver_register+0xd0/0x340
sp=e0000040c30afdf0 bsp=e0000040c30a0f60
[<a00000010037b640>] __pci_register_driver+0xa0/0x120
sp=e0000040c30afdf0 bsp=e0000040c30a0f28
[<a000000201bd01b0>] mptspi_init+0x1b0/0x300 [mptspi]
sp=e0000040c30afdf0 bsp=e0000040c30a0ef8
[<a00000010000a920>] do_one_initcall+0x60/0x360
sp=e0000040c30afdf0 bsp=e0000040c30a0eb8
[<a000000100107460>] sys_init_module+0x140/0x3c0
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a00000010000c6c0>] ia64_ret_from_syscall+0x0/0x20
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a000000000010720>] __kernel_syscall_via_break+0x0/0x20
sp=e0000040c30b0000 bsp=e0000040c30a0e48
---[ end trace aef9c69889c77119 ]---
ODEBUG: object is on stack, but not annotated
------------[ cut here ]------------
WARNING: at lib/debugobjects.c:253 __debug_object_init+0x420/0x840()
Modules linked in: mptspi(+) mptscsih mptbase ehci_hcd ohci_hcd uhci_hcd usbcore

Call Trace:
[<a000000100017940>] show_stack+0x80/0xa0
sp=e0000040c30af760 bsp=e0000040c30a1450
[<a000000100017990>] dump_stack+0x30/0x60
sp=e0000040c30af930 bsp=e0000040c30a1438
[<a0000001000a96e0>] warn_slowpath+0x140/0x1a0
sp=e0000040c30af930 bsp=e0000040c30a13c8
[<a0000001003682a0>] __debug_object_init+0x420/0x840
sp=e0000040c30afa60 bsp=e0000040c30a1370
[<a000000100368790>] debug_object_init+0x50/0x80
sp=e0000040c30afa70 bsp=e0000040c30a1348
[<a0000001000c3430>] init_timer+0x30/0x60
sp=e0000040c30afa70 bsp=e0000040c30a1328
[<a000000201a4aa30>] mpt_config+0x390/0x6a0 [mptbase]
sp=e0000040c30afa70 bsp=e0000040c30a12c8
[<a000000201a4dcf0>] mpt_do_ioc_recovery+0x1c30/0x2ee0 [mptbase]
sp=e0000040c30afaa0 bsp=e0000040c30a11f0
[<a000000201a52230>] mpt_attach+0x890/0x1f40 [mptbase]
sp=e0000040c30afd70 bsp=e0000040c30a1178
[<a000000201b92650>] mptspi_probe+0x30/0x7e0 [mptspi]
sp=e0000040c30afd80 bsp=e0000040c30a1128
[<a00000010037a770>] local_pci_probe+0x70/0xa0
sp=e0000040c30afd80 bsp=e0000040c30a1108
[<a00000010037b110>] pci_device_probe+0x310/0x360
sp=e0000040c30afd80 bsp=e0000040c30a10d0
[<a00000010046d370>] driver_probe_device+0x190/0x3a0
sp=e0000040c30afde0 bsp=e0000040c30a1088
[<a00000010046d660>] __driver_attach+0xe0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1050
[<a00000010046b900>] bus_for_each_dev+0xc0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1018
[<a00000010046cf80>] driver_attach+0x40/0x60
sp=e0000040c30afdf0 bsp=e0000040c30a0ff0
[<a00000010046c930>] bus_add_driver+0x370/0x4a0
sp=e0000040c30afdf0 bsp=e0000040c30a0fa8
[<a00000010046dad0>] driver_register+0xd0/0x340
sp=e0000040c30afdf0 bsp=e0000040c30a0f60
[<a00000010037b640>] __pci_register_driver+0xa0/0x120
sp=e0000040c30afdf0 bsp=e0000040c30a0f28
[<a000000201bd01b0>] mptspi_init+0x1b0/0x300 [mptspi]
sp=e0000040c30afdf0 bsp=e0000040c30a0ef8
[<a00000010000a920>] do_one_initcall+0x60/0x360
sp=e0000040c30afdf0 bsp=e0000040c30a0eb8
[<a000000100107460>] sys_init_module+0x140/0x3c0
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a00000010000c6c0>] ia64_ret_from_syscall+0x0/0x20
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a000000000010720>] __kernel_syscall_via_break+0x0/0x20
sp=e0000040c30b0000 bsp=e0000040c30a0e48
---[ end trace aef9c69889c77119 ]---
ODEBUG: object is on stack, but not annotated
------------[ cut here ]------------
WARNING: at lib/debugobjects.c:253 __debug_object_init+0x420/0x840()
Modules linked in: mptspi(+) mptscsih mptbase ehci_hcd ohci_hcd uhci_hcd usbcore

Call Trace:
[<a000000100017940>] show_stack+0x80/0xa0
sp=e0000040c30af760 bsp=e0000040c30a1450
[<a000000100017990>] dump_stack+0x30/0x60
sp=e0000040c30af930 bsp=e0000040c30a1438
[<a0000001000a96e0>] warn_slowpath+0x140/0x1a0
sp=e0000040c30af930 bsp=e0000040c30a13c8
[<a0000001003682a0>] __debug_object_init+0x420/0x840
sp=e0000040c30afa60 bsp=e0000040c30a1370
[<a000000100368790>] debug_object_init+0x50/0x80
sp=e0000040c30afa70 bsp=e0000040c30a1348
[<a0000001000c3430>] init_timer+0x30/0x60
sp=e0000040c30afa70 bsp=e0000040c30a1328
[<a000000201a4aa30>] mpt_config+0x390/0x6a0 [mptbase]
sp=e0000040c30afa70 bsp=e0000040c30a12c8
[<a000000201a4e440>] mpt_do_ioc_recovery+0x2380/0x2ee0 [mptbase]
sp=e0000040c30afaa0 bsp=e0000040c30a11f0
[<a000000201a52230>] mpt_attach+0x890/0x1f40 [mptbase]
sp=e0000040c30afd70 bsp=e0000040c30a1178
[<a000000201b92650>] mptspi_probe+0x30/0x7e0 [mptspi]
sp=e0000040c30afd80 bsp=e0000040c30a1128
[<a00000010037a770>] local_pci_probe+0x70/0xa0
sp=e0000040c30afd80 bsp=e0000040c30a1108
[<a00000010037b110>] pci_device_probe+0x310/0x360
sp=e0000040c30afd80 bsp=e0000040c30a10d0
[<a00000010046d370>] driver_probe_device+0x190/0x3a0
sp=e0000040c30afde0 bsp=e0000040c30a1088
[<a00000010046d660>] __driver_attach+0xe0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1050
[<a00000010046b900>] bus_for_each_dev+0xc0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1018
[<a00000010046cf80>] driver_attach+0x40/0x60
sp=e0000040c30afdf0 bsp=e0000040c30a0ff0
[<a00000010046c930>] bus_add_driver+0x370/0x4a0
sp=e0000040c30afdf0 bsp=e0000040c30a0fa8
[<a00000010046dad0>] driver_register+0xd0/0x340
sp=e0000040c30afdf0 bsp=e0000040c30a0f60
[<a00000010037b640>] __pci_register_driver+0xa0/0x120
sp=e0000040c30afdf0 bsp=e0000040c30a0f28
[<a000000201bd01b0>] mptspi_init+0x1b0/0x300 [mptspi]
sp=e0000040c30afdf0 bsp=e0000040c30a0ef8
[<a00000010000a920>] do_one_initcall+0x60/0x360
sp=e0000040c30afdf0 bsp=e0000040c30a0eb8
[<a000000100107460>] sys_init_module+0x140/0x3c0
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a00000010000c6c0>] ia64_ret_from_syscall+0x0/0x20
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a000000000010720>] __kernel_syscall_via_break+0x0/0x20
sp=e0000040c30b0000 bsp=e0000040c30a0e48
---[ end trace aef9c69889c77119 ]---
ODEBUG: object is on stack, but not annotated
------------[ cut here ]------------
WARNING: at lib/debugobjects.c:253 __debug_object_init+0x420/0x840()
Modules linked in: mptspi(+) mptscsih mptbase ehci_hcd ohci_hcd uhci_hcd usbcore

Call Trace:
[<a000000100017940>] show_stack+0x80/0xa0
sp=e0000040c30af760 bsp=e0000040c30a1450
[<a000000100017990>] dump_stack+0x30/0x60
sp=e0000040c30af930 bsp=e0000040c30a1438
[<a0000001000a96e0>] warn_slowpath+0x140/0x1a0
sp=e0000040c30af930 bsp=e0000040c30a13c8
[<a0000001003682a0>] __debug_object_init+0x420/0x840
sp=e0000040c30afa60 bsp=e0000040c30a1370
[<a000000100368790>] debug_object_init+0x50/0x80
sp=e0000040c30afa70 bsp=e0000040c30a1348
[<a0000001000c3430>] init_timer+0x30/0x60
sp=e0000040c30afa70 bsp=e0000040c30a1328
[<a000000201a4aa30>] mpt_config+0x390/0x6a0 [mptbase]
sp=e0000040c30afa70 bsp=e0000040c30a12c8
[<a000000201a4dfb0>] mpt_do_ioc_recovery+0x1ef0/0x2ee0 [mptbase]
sp=e0000040c30afaa0 bsp=e0000040c30a11f0
[<a000000201a52230>] mpt_attach+0x890/0x1f40 [mptbase]
sp=e0000040c30afd70 bsp=e0000040c30a1178
[<a000000201b92650>] mptspi_probe+0x30/0x7e0 [mptspi]
sp=e0000040c30afd80 bsp=e0000040c30a1128
[<a00000010037a770>] local_pci_probe+0x70/0xa0
sp=e0000040c30afd80 bsp=e0000040c30a1108
[<a00000010037b110>] pci_device_probe+0x310/0x360
sp=e0000040c30afd80 bsp=e0000040c30a10d0
[<a00000010046d370>] driver_probe_device+0x190/0x3a0
sp=e0000040c30afde0 bsp=e0000040c30a1088
[<a00000010046d660>] __driver_attach+0xe0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1050
[<a00000010046b900>] bus_for_each_dev+0xc0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1018
[<a00000010046cf80>] driver_attach+0x40/0x60
sp=e0000040c30afdf0 bsp=e0000040c30a0ff0
[<a00000010046c930>] bus_add_driver+0x370/0x4a0
sp=e0000040c30afdf0 bsp=e0000040c30a0fa8
[<a00000010046dad0>] driver_register+0xd0/0x340
sp=e0000040c30afdf0 bsp=e0000040c30a0f60
[<a00000010037b640>] __pci_register_driver+0xa0/0x120
sp=e0000040c30afdf0 bsp=e0000040c30a0f28
[<a000000201bd01b0>] mptspi_init+0x1b0/0x300 [mptspi]
sp=e0000040c30afdf0 bsp=e0000040c30a0ef8
[<a00000010000a920>] do_one_initcall+0x60/0x360
sp=e0000040c30afdf0 bsp=e0000040c30a0eb8
[<a000000100107460>] sys_init_module+0x140/0x3c0
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a00000010000c6c0>] ia64_ret_from_syscall+0x0/0x20
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a000000000010720>] __kernel_syscall_via_break+0x0/0x20
sp=e0000040c30b0000 bsp=e0000040c30a0e48
---[ end trace aef9c69889c77119 ]---
ODEBUG: object is on stack, but not annotated
------------[ cut here ]------------
WARNING: at lib/debugobjects.c:253 __debug_object_init+0x420/0x840()
Modules linked in: mptspi(+) mptscsih mptbase ehci_hcd ohci_hcd uhci_hcd usbcore

Call Trace:
[<a000000100017940>] show_stack+0x80/0xa0
sp=e0000040c30af760 bsp=e0000040c30a1450
[<a000000100017990>] dump_stack+0x30/0x60
sp=e0000040c30af930 bsp=e0000040c30a1438
[<a0000001000a96e0>] warn_slowpath+0x140/0x1a0
sp=e0000040c30af930 bsp=e0000040c30a13c8
[<a0000001003682a0>] __debug_object_init+0x420/0x840
sp=e0000040c30afa60 bsp=e0000040c30a1370
[<a000000100368790>] debug_object_init+0x50/0x80
sp=e0000040c30afa70 bsp=e0000040c30a1348
[<a0000001000c3430>] init_timer+0x30/0x60
sp=e0000040c30afa70 bsp=e0000040c30a1328
[<a000000201a4aa30>] mpt_config+0x390/0x6a0 [mptbase]
sp=e0000040c30afa70 bsp=e0000040c30a12c8
[<a000000201a4cfb0>] mpt_do_ioc_recovery+0xef0/0x2ee0 [mptbase]
sp=e0000040c30afaa0 bsp=e0000040c30a11f0
[<a000000201a52230>] mpt_attach+0x890/0x1f40 [mptbase]
sp=e0000040c30afd70 bsp=e0000040c30a1178
[<a000000201b92650>] mptspi_probe+0x30/0x7e0 [mptspi]
sp=e0000040c30afd80 bsp=e0000040c30a1128
[<a00000010037a770>] local_pci_probe+0x70/0xa0
sp=e0000040c30afd80 bsp=e0000040c30a1108
[<a00000010037b110>] pci_device_probe+0x310/0x360
sp=e0000040c30afd80 bsp=e0000040c30a10d0
[<a00000010046d370>] driver_probe_device+0x190/0x3a0
sp=e0000040c30afde0 bsp=e0000040c30a1088
[<a00000010046d660>] __driver_attach+0xe0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1050
[<a00000010046b900>] bus_for_each_dev+0xc0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1018
[<a00000010046cf80>] driver_attach+0x40/0x60
sp=e0000040c30afdf0 bsp=e0000040c30a0ff0
[<a00000010046c930>] bus_add_driver+0x370/0x4a0
sp=e0000040c30afdf0 bsp=e0000040c30a0fa8
[<a00000010046dad0>] driver_register+0xd0/0x340
sp=e0000040c30afdf0 bsp=e0000040c30a0f60
[<a00000010037b640>] __pci_register_driver+0xa0/0x120
sp=e0000040c30afdf0 bsp=e0000040c30a0f28
[<a000000201bd01b0>] mptspi_init+0x1b0/0x300 [mptspi]
sp=e0000040c30afdf0 bsp=e0000040c30a0ef8
[<a00000010000a920>] do_one_initcall+0x60/0x360
sp=e0000040c30afdf0 bsp=e0000040c30a0eb8
[<a000000100107460>] sys_init_module+0x140/0x3c0
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a00000010000c6c0>] ia64_ret_from_syscall+0x0/0x20
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a000000000010720>] __kernel_syscall_via_break+0x0/0x20
sp=e0000040c30b0000 bsp=e0000040c30a0e48
---[ end trace aef9c69889c77119 ]---

========================================

if it is merely wrong annotation problem (I think so), fixing patch is here.

=====
Subject: [PATCH] mpt: timer annotaion fix in mpt_config()

The mpt_config() call to init_timer(), not init_tiemr_on_stack().
but all caller of the mpt_config() create a timer object on stack.

Then, if CONFIG_DEBUG_OBJECTS=y, kernel output following warning at boot time.

ODEBUG: object is on stack, but not annotated
------------[ cut here ]------------
WARNING: at lib/debugobjects.c:253 __debug_object_init+0x420/0x840()
Modules linked in: mptspi(+) mptscsih mptbase ehci_hcd ohci_hcd uhci_hcd usbcore

Call Trace:
[<a000000100017940>] show_stack+0x80/0xa0
sp=e0000040c30af760 bsp=e0000040c30a1450
[<a000000100017990>] dump_stack+0x30/0x60
sp=e0000040c30af930 bsp=e0000040c30a1438
[<a0000001000a96e0>] warn_slowpath+0x140/0x1a0
sp=e0000040c30af930 bsp=e0000040c30a13c8
[<a0000001003682a0>] __debug_object_init+0x420/0x840
sp=e0000040c30afa60 bsp=e0000040c30a1370
[<a000000100368790>] debug_object_init+0x50/0x80
sp=e0000040c30afa70 bsp=e0000040c30a1348
[<a0000001000c3430>] init_timer+0x30/0x60
sp=e0000040c30afa70 bsp=e0000040c30a1328
[<a000000201a4aa30>] mpt_config+0x390/0x6a0 [mptbase]
sp=e0000040c30afa70 bsp=e0000040c30a12c8
[<a000000201a4cfb0>] mpt_do_ioc_recovery+0xef0/0x2ee0 [mptbase]
sp=e0000040c30afaa0 bsp=e0000040c30a11f0
[<a000000201a52230>] mpt_attach+0x890/0x1f40 [mptbase]
sp=e0000040c30afd70 bsp=e0000040c30a1178
[<a000000201b92650>] mptspi_probe+0x30/0x7e0 [mptspi]
sp=e0000040c30afd80 bsp=e0000040c30a1128
[<a00000010037a770>] local_pci_probe+0x70/0xa0
sp=e0000040c30afd80 bsp=e0000040c30a1108
[<a00000010037b110>] pci_device_probe+0x310/0x360
sp=e0000040c30afd80 bsp=e0000040c30a10d0
[<a00000010046d370>] driver_probe_device+0x190/0x3a0
sp=e0000040c30afde0 bsp=e0000040c30a1088
[<a00000010046d660>] __driver_attach+0xe0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1050
[<a00000010046b900>] bus_for_each_dev+0xc0/0x140
sp=e0000040c30afde0 bsp=e0000040c30a1018
[<a00000010046cf80>] driver_attach+0x40/0x60
sp=e0000040c30afdf0 bsp=e0000040c30a0ff0
[<a00000010046c930>] bus_add_driver+0x370/0x4a0
sp=e0000040c30afdf0 bsp=e0000040c30a0fa8
[<a00000010046dad0>] driver_register+0xd0/0x340
sp=e0000040c30afdf0 bsp=e0000040c30a0f60
[<a00000010037b640>] __pci_register_driver+0xa0/0x120
sp=e0000040c30afdf0 bsp=e0000040c30a0f28
[<a000000201bd01b0>] mptspi_init+0x1b0/0x300 [mptspi]
sp=e0000040c30afdf0 bsp=e0000040c30a0ef8
[<a00000010000a920>] do_one_initcall+0x60/0x360
sp=e0000040c30afdf0 bsp=e0000040c30a0eb8
[<a000000100107460>] sys_init_module+0x140/0x3c0
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a00000010000c6c0>] ia64_ret_from_syscall+0x0/0x20
sp=e0000040c30afe30 bsp=e0000040c30a0e48
[<a000000000010720>] __kernel_syscall_via_break+0x0/0x20
sp=e0000040c30b0000 bsp=e0000040c30a0e48
---[ end trace aef9c69889c77119 ]---

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
---
drivers/message/fusion/mptbase.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Index: b/drivers/message/fusion/mptbase.c
===================================================================
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -5902,7 +5902,7 @@ mpt_config(MPT_ADAPTER *ioc, CONFIGPARMS

/* Initalize the timer
*/
- init_timer(&pCfg->timer);
+ init_timer_on_stack(&pCfg->timer);
pCfg->timer.data = (unsigned long) ioc;
pCfg->timer.function = mpt_timer_expired;
pCfg->wait_done = 0;

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