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Debian 10 kernel 4.19.98-1 IO deadlock

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Hello Ben and Kernel Team,

A couple of days ago I logged a kernel bug to
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=958368 which causes
sporadic IO hangs/deadlocks to processes that attempts IO of any kind. I am
still hunting for the root cause and was hoping to bring some more
awareness and get your help.

I was wondering if the root cause for the IO lock might be due to a
Debian-specific patch which is not manifested with the upstream kernel. I
could not find any other reports related to this.

In the bug I provide 3 instances of kernel stack traces that I induced.
I would be happy to give more details if needed - please let me know.

Thank you,
-- 
Rumen Telbizov
Unix Systems Administrator <http://telbizov.com>

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Debian 10 kernel 4.19.98-1 IO deadlock Rumen Telbizov <telbizov@gmail.com> - 2020-04-23 00:20 +0200

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