Re: 2.5.7, IDE, 'handler not null', 'kernel timer added twice'

[Andre Hedrick]

It is not harmless, it can be fatal.  Leaving a dangling interrupt handler
set for the next device is a bad thing.  I know what it is and where but
how and why is an issue to be resolved.

Regards,

Andre Hedrick
LAD Storage Consulting Group

On Thu, 21 Mar 2002, David Schwartz wrote:

> 
> 	I got the following from a 2.5.7 machine.
> 
> hdc: ide_set_handler: handler not null; old=c01e5af0, new=c01e5af0
> bug: kernel timer added twice at c01e6925.
> hdc: ide_set_handler: handler not null; old=c01e5af0, new=c01e5af0
> bug: kernel timer added twice at c01e6925.
> 
> 	The first two occured at about the same time. The second two occured the 
> next day. HDC is a WDC WD307AA ATA drive. The controller is a PIIX4 (82371AB) 
> using DMA (UDMA33).
> 
> 	The relevant section of the system map is :
> 
> c01e52c0 T do_rw_taskfile
> c01e5450 T do_taskfile
> c01e55b0 T set_multmode_intr
> c01e5610 T set_geometry_intr
> c01e5670 T recal_intr
> c01e56b0 T task_no_data_intr
> c01e5720 t task_in_intr
> c01e5840 t pre_task_out_intr
> c01e5940 t task_out_intr
> c01e5a90 t pre_bio_out_intr
> c01e5af0 t bio_mulout_intr
> c01e5ce0 t task_mulin_intr
> c01e5e70 T ide_cmd_type_parser
> c01e5ff0 t ide_init_drive_taskfile
> c01e6010 T ide_wait_taskfile
> c01e6120 T ide_raw_taskfile
> c01e6180 t ide_wait_cmd
> c01e6210 T ide_cmd_ioctl
> c01e6420 T ide_task_ioctl
> c01e64e0 t init_hwif_data
> c01e66a0 T drive_is_flashcard
> c01e67d0 T __ide_end_request
> c01e68c0 T ide_set_handler
> c01e6940 t ata_pre_reset
> c01e6a00 T ata_capacity
> c01e6a40 t ata_special
> 
> 	This looks harmless, like something was set twice.
> 
> -- 
> David Schwartz
> <[e-mail]>
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> 
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