Re: [PATCH 1/3] cciss: bug fix for hpacucli

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On Mon, Nov 21, 2005 at 09:28:10AM +0100, Jens Axboe wrote:
> On Fri, Nov 18 2005, Jens Axboe wrote:
> > On Fri, Nov 18 2005, mikem wrote:
> > > Patch 1 of 3
> > > 
> > > This patch fixes a bug that breaks hpacucli, a command line interface
> > > for the HP Array Config Utility. Without this fix the utility will
> > > not detect any controllers in the system. I thought I had already fixed
> > > this, but I guess not.
> > > 
> > > Thanks to all who reported the issue. Please consider this this inclusion.
> > 
> > Lovely, hope this makes it able to configure my drives on the tiger now
> > :).
> 
> This sort-of makes it work. I get some complaints about unaligned access
> when setting up a test array:
> 
> => controller slot=0 create type=logicaldrive drives=all raid=1 drivetype=sas
> .hpacucli(12458): unaligned access to 0x60000fffffcb370e, ip=0x40000000003c8550
> => controller slot=0 create type=logicaldrive drives=all raid=1 drivetype=sata
> .hpacucli(12458): unaligned access to 0x60000fffffcb4aee, ip=0x40000000003c8550
> .hpacucli(12458): unaligned access to 0x60000fffffcb370e, ip=0x40000000003c8550
> .hpacucli(12458): unaligned access to 0x60000fffffcb370e, ip=0x40000000003c8550

This seems to be coming out of user space. We'll work with the application
folks to investigate. There is a library called infomanager that's used
by the app. There may be an issue there. Call you strace the program and
send me the results? I haven't seen this in my lab with a vendor kernel.

> 
> Invoking hpacucli again later on makes it trigger a kobj warning:
> 
> Badness in kref_get at lib/kref.c:32

Hmmm, is this with my put_disk patch installed?

mikem

> 
> Call Trace:
>  [<a000000100013560>] show_stack+0x80/0xa0
>                                 sp=e0000001f5547b20 bsp=e0000001f5541250
>  [<a000000100013e30>] dump_stack+0x30/0x60
>                                 sp=e0000001f5547cf0 bsp=e0000001f5541238
>  [<a00000010034fec0>] kref_get+0xa0/0xc0
>                                 sp=e0000001f5547cf0 bsp=e0000001f5541218
>  [<a00000010034e470>] kobject_get+0x30/0x60
>                                 sp=e0000001f5547cf0 bsp=e0000001f55411f0
>  [<a00000010034eb80>] kobject_add+0x20/0x380
>                                 sp=e0000001f5547cf0 bsp=e0000001f55411b8
>  [<a0000001001b7ff0>] register_disk+0x70/0x200
>                                 sp=e0000001f5547cf0 bsp=e0000001f5541188
>  [<a0000001003385d0>] add_disk+0x90/0xc0
>                                 sp=e0000001f5547cf0 bsp=e0000001f5541168
>  [<a000000202e1aa40>] rebuild_lun_table+0xaa0/0xb20 [cciss]
>                                 sp=e0000001f5547cf0 bsp=e0000001f55410a8
>  [<a000000202e1bbc0>] cciss_ioctl+0xa20/0x3be0 [cciss]
>                                 sp=e0000001f5547d00 bsp=e0000001f5540fc0
>  [<a0000001003346b0>] blkdev_driver_ioctl+0xd0/0x160
>                                 sp=e0000001f5547e10 bsp=e0000001f5540f78
>  [<a000000100335050>] blkdev_ioctl+0x170/0xb40
>                                 sp=e0000001f5547e10 bsp=e0000001f5540f20
>  [<a000000100147cc0>] block_ioctl+0x40/0x60
>                                 sp=e0000001f5547e10 bsp=e0000001f5540ef0
>  [<a000000100160740>] do_ioctl+0x160/0x1a0
>                                 sp=e0000001f5547e10 bsp=e0000001f5540eb0
>  [<a000000100160880>] vfs_ioctl+0x100/0x8e0
>                                 sp=e0000001f5547e10 bsp=e0000001f5540e68
>  [<a0000001001610c0>] sys_ioctl+0x60/0xc0
>                                 sp=e0000001f5547e20 bsp=e0000001f5540de8
>  [<a00000010000bc80>] ia64_ret_from_syscall+0x0/0x20
>                                 sp=e0000001f5547e30 bsp=e0000001f5540de8
>  [<a000000000010640>] __kernel_syscall_via_break+0x0/0x20
>                                 sp=e0000001f5548000 bsp=e0000001f5540de8
> 
> -- 
> Jens Axboe
> 
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