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Bug#852749: Bug still present, patches work on modules in kernel package 4.9.0-9

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  Bug#852749: Bug still present, patches work on modules in kernel package 4.9.0-9 AJ Milne <andrew.j.milne@gmail.com> - 2019-05-11 04:20 +0200

#64076 — Bug#852749: Bug still present, patches work on modules in kernel package 4.9.0-9

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Realizing this thread is now a few years old: I had the same error
(transfer buffer not dma capable, coming from usb_hcd_map_urb_for_dma)
using a Line6 Pod XT through the snd-usb-pod kernel module (uses
snd-usb-line6), the machine running stock kernel package 4.9.0-9.

Inspecting the source, it appears the message buffers are still coming from
the stack as of this kernel package. Applying Ben Hutchings' patches as of
message:

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=852749#10

... these moving the message buffers off the stack and adding error checks
to the toneport set, doing so corrected the problem. Device is now
functional; thanks much.

AJM

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