2006-02-07 20:00:16

by anil dahiya

[permalink] [raw]
Subject: Badness in sleep_on_timeout on kernel 2.6.9-1.667 ( fedora core 3)

Hello
I am creating kernel thread on fedora core 4
(2.6.9-1.667)and my getting oops something like

Badness in sleep_on_timeout at kernel/sched.c:3022
[<02302bc3>] sleep_on_timeout+0x5d/0x23a
[<0211b919>] default_wake_function+0x0/0xc

can any suggest how i can avoid this oops.
Regards,
Anil

--- anil dahiya <[email protected]> wrote:

> Hi Sam
> Thanks fop your help ..but my problem is not solved
> it
> ...i putting my real problem here below.
>
> 1>my fist need is to make module1.ko made using
> a1/a1.c , a1/a11.c & a2/a2.c a2/a22.c and all .c
> file
> use /home/include/a.h
>
>
> 2>Now my 2nd need is to make module2.ko using
> module1.ko and b/b1.c & b/b11.c (these both .c files
> use /home/include/a.h and /home/module2/include/b.h)
>
>
> In short my directory structure is as:
>
> /home/------
> |_ include _
> | |
> | a.h
> |
> |___module1_
> | |__ a1 ____________
> | | | |
> | | a1.c a11.c
> | |
> |__ a2 ___________
> | | | |
> | | a2.c a22.c
> |
> |___ moudule2_
> | |
> | |__include _
> | | |
> | | b.h
> | |___b1________
> | | |
> | b1.c b11.c
>
>
> Looking forward for ur reply
> thanks in advance
> ---- Anil
>
>
> --- anil dahiya <[email protected]> wrote:
>
> > hello
> > I want to make kernel module dummy.ko using
> multiple
> > .c and .h files. In short i am telling .c and .h
> > files
> > with directory structure
> >
> > 1> dummy.ko should made be using module1.ko and
> > module2.o (i.e
> > module2.o uses module1.ko to make dummy.ko)
> >
> > 2> module1.ko made using a1/a1.c & a2/a2.c and
> both
> > .c file
> > use /home/include/a.h
> > 3> module2.o should made using b/b1.c which use
> > use /home/module2/include/b.h
> >
> > Suggest me tht should make i make module2.o or
> > module2.ko and then combine it with module1.o to
> > make
> > dummy.ko
> >
> >
> > /home/------
> > |_ include _
> > | |
> > | a.h
> > |
> > |___module1_
> > | |__ a1 ____
> > | | |
> > | | a1.c
> > | |
> > |__ a2 ____
> > | | |
> > | | a2.c
> > |
> > |___ moudule2_
> > | |
> > | |__include _
> > | | |
> > | | b.h
> > | |___b1__
> > | |
> > | b1.c
> >
> >
> > Looking forward for ur reply
> > thanks in advance
> > ---- Anil
> >
> >
> >
> > __________________________________________
> > Yahoo! DSL ? Something to write home about.
> > Just $16.99/mo. or less.
> > dsl.yahoo.com
> >
> >
> > --
> > Kernelnewbies: Help each other learn about the
> Linux
> > kernel.
> > Archive:
> > http://mail.nl.linux.org/kernelnewbies/
> > FAQ: http://kernelnewbies.org/faq/
> >
> >
>
>
>
>
> __________________________________________
> Yahoo! DSL ? Something to write home about.
> Just $16.99/mo. or less.
> dsl.yahoo.com
>
>


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2006-02-07 21:50:37

by David Woodhouse

[permalink] [raw]
Subject: Re: Badness in sleep_on_timeout on kernel 2.6.9-1.667 ( fedora core 3)

On Tue, 2006-02-07 at 12:00 -0800, anil dahiya wrote:
> Badness in sleep_on_timeout at kernel/sched.c:3022
> [<02302bc3>] sleep_on_timeout+0x5d/0x23a
> [<0211b919>] default_wake_function+0x0/0xc
>
> can any suggest how i can avoid this oops.

Stop using sleep_on_timeout(). It's almost certainly buggy.

--
dwmw2

2006-02-08 05:54:28

by anil dahiya

[permalink] [raw]
Subject: Re: Badness in sleep_on_timeout on kernel 2.6.9-1.667 ( fedora core 3)

then which function i should use...beacause same
problem is with interruptible_sleep_on
thanks & Regards,
anil

--- David Woodhouse <[email protected]> wrote:

> On Tue, 2006-02-07 at 12:00 -0800, anil dahiya
> wrote:
> > Badness in sleep_on_timeout at
> kernel/sched.c:3022
> > [<02302bc3>] sleep_on_timeout+0x5d/0x23a
> > [<0211b919>] default_wake_function+0x0/0xc
> >
> > can any suggest how i can avoid this oops.
>
> Stop using sleep_on_timeout(). It's almost certainly
> buggy.
>
> --
> dwmw2
>
>
> --
> Kernelnewbies: Help each other learn about the Linux
> kernel.
> Archive:
> http://mail.nl.linux.org/kernelnewbies/
> FAQ: http://kernelnewbies.org/faq/
>
>


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2006-02-08 06:40:54

by Gaurav Dhiman

[permalink] [raw]
Subject: Re: Badness in sleep_on_timeout on kernel 2.6.9-1.667 ( fedora core 3)

On 2/8/06, anil dahiya <[email protected]> wrote:
> then which function i should use...beacause same
> problem is with interruptible_sleep_on

prefer to use wait_event_timeout() ; see its code in kernel.
Its written fro handling race conditions, which might occur in
interruptible_sleep_on() or other such functions.

-Gaurav

> thanks & Regards,
> anil
>
> --- David Woodhouse <[email protected]> wrote:
>
> > On Tue, 2006-02-07 at 12:00 -0800, anil dahiya
> > wrote:
> > > Badness in sleep_on_timeout at
> > kernel/sched.c:3022
> > > [<02302bc3>] sleep_on_timeout+0x5d/0x23a
> > > [<0211b919>] default_wake_function+0x0/0xc
> > >
> > > can any suggest how i can avoid this oops.
> >
> > Stop using sleep_on_timeout(). It's almost certainly
> > buggy.
> >
> > --
> > dwmw2
> >
> >
> > --
> > Kernelnewbies: Help each other learn about the Linux
> > kernel.
> > Archive:
> > http://mail.nl.linux.org/kernelnewbies/
> > FAQ: http://kernelnewbies.org/faq/
> >
> >
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
> --
> Kernelnewbies: Help each other learn about the Linux kernel.
> Archive: http://mail.nl.linux.org/kernelnewbies/
> FAQ: http://kernelnewbies.org/faq/
>
>

2006-02-12 13:17:42

by Arjan van de Ven

[permalink] [raw]
Subject: Re: Badness in sleep_on_timeout on kernel 2.6.9-1.667 ( fedora core 3)

On Tue, 2006-02-07 at 12:00 -0800, anil dahiya wrote:
> Hello
> I am creating kernel thread on fedora core 4
> (2.6.9-1.667)and my getting oops something like
>
> Badness in sleep_on_timeout at kernel/sched.c:3022
> [<02302bc3>] sleep_on_timeout+0x5d/0x23a
> [<0211b919>] default_wake_function+0x0/0xc


you forgot to post a URL to your code
(and you use sleep_on_* family of APIs which is a bug in itself)