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Date:      Tue, 05 May 2020 09:00:54 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 246216] ZFS sometimes causes a zio_execute()-related stack overflow panic not long after boot
Message-ID:  <bug-246216-227-px3dt5kMXv@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-246216-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-246216-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246216

--- Comment #1 from sigsys@gmail.com ---
After some testing, it seems to only panic when it tries to import all of its
pools on boot.  This computer has 3 pools: a main 2-way SSD mirror pool it
boots from, a small 1 SSD pool (SSD also has a swap partition on it) and a
2-way HDD mirror pool.  Preventing the HDD pool from being imported
automatically on boot prevents the panics.  And importing it manually a little
bit after booting also does not panic.  Also, there are no kernel error
messages at any point (even in the cases where it does panic (well, apart from
the panic)) and nothing bad in zpool status.

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