Bug#1029968: Acknowledgement (bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0)

From	"Dr. David Alan Gilbert" <dave@treblig.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1029968: Acknowledgement (bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0)
Date	2023-02-01 13:00 +0100
Message-ID	<FUjWp-2ExW-5@gated-at.bofh.it> (permalink)
References	<FTjON-20Yp-9@gated-at.bofh.it> <FUazL-2xWG-7@gated-at.bofh.it> <FUeN3-2Bar-5@gated-at.bofh.it> <FTjON-20Yp-9@gated-at.bofh.it> <FUeN3-2Bar-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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* Diederik de Haas (didi.debian@cknow.org) wrote:

> Thanks for that thorough analyses!

Thanks for the reply,

> If you're 'penguin42' on IRC,

Yep, that's me.

> then I'd suggest to present your findings to
> iommu@lists.linux.dev as both the author and the reviewer are highly likely 
> subscribed to that list.
> 
> scripts/get_maintainer.pl drivers/iommu/dma-iommu.c
> scripts/get_maintainer.pl kernel/dma/Makefile
> 
> list them both and both results have also that ML in their result.

Yep, will do; I'm just going to try a 6.2rc as well just in case it's
got fixed very recently, and have a poke about in case I can see
any obvious cause now I know the change that triggered it.
I'll include the linux-media list as well since it's just as likely
that it's a fault on the v4l/bttv driver.

Dave

> HTH

-- 
 -----Open up your eyes, open up your mind, open up your code -------   
/ Dr. David Alan Gilbert    |       Running GNU/Linux       | Happy  \ 
\        dave @ treblig.org |                               | In Hex /
 \ _________________________|_____ http://www.treblig.org   |_______/

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Bug#1029968: Acknowledgement (bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0) "Dr. David Alan Gilbert" <dave@treblig.org> - 2023-02-01 03:00 +0100
  Bug#1029968: Info received (Bug#1029968: Acknowledgement (bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0)) "Dr. David Alan Gilbert" <dave@treblig.org> - 2023-02-01 04:00 +0100
    Bug#1029968: Info received (Bug#1029968: Info received (Bug#1029968: Acknowledgement (bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0))) "Dr. David Alan Gilbert" <dave@treblig.org> - 2023-02-01 15:10 +0100
      Bug#1029968: Info received (Bug#1029968: Info received (Bug#1029968: Info received (Bug#1029968: Acknowledgement (bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0)))) "Dr. David Alan Gilbert" <dave@treblig.org> - 2023-02-01 19:00 +0100
        Bug#1029968: Info received (Bug#1029968: Info received (Bug#1029968: Info received (Bug#1029968: Acknowledgement (bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0)))) Diederik de Haas <didi.debian@cknow.org> - 2023-02-01 20:10 +0100
          Bug#1029968: Info received (Bug#1029968: Info received (Bug#1029968: Info received (Bug#1029968: Acknowledgement (bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0)))) "Dr. David Alan Gilbert" <dave@treblig.org> - 2023-02-04 02:10 +0100
            Bug#1029968: bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0 Diederik de Haas <didi.debian@cknow.org> - 2023-02-04 19:10 +0100
  Bug#1029968: Acknowledgement (bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0) Diederik de Haas <didi.debian@cknow.org> - 2023-02-01 07:30 +0100
    Bug#1029968: Acknowledgement (bttv/v4l: WARNING: CPU: 6 PID: 6164 at mm/vmalloc.c:487 __vmap_pages_range_noflush+0x3e0/0x4d0) "Dr. David Alan Gilbert" <dave@treblig.org> - 2023-02-01 13:00 +0100

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