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Date:      Sat, 02 Dec 2017 17:50:31 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-scsi@FreeBSD.org
Subject:   [Bug 224037] Kernel crashes when trying to  mount certain USB keys reported as WriteProtected
Message-ID:  <bug-224037-5312-NeK3M46GLm@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-224037-5312@https.bugs.freebsd.org/bugzilla/>
References:  <bug-224037-5312@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224037

--- Comment #4 from Conrad Meyer <cem@freebsd.org> ---
Petr,

I suspect when CAM sees EROFS or EIO errors due to write requests to read only
media failing, it ejects the device.  Something about the ejection path is
failing to clean up references to some internal object, which is freed before
buffers referencing it can be released.

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