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Subject: Re: BUG: unable to handle kernel paging request at ffff9fb75f827100
From: Christoph Anton Mitterer <calestyo@scientia.net>
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        Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Date: Wed, 21 Feb 2018 15:51:44 +0100
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Interestingly, I got another one only within minutes after the scrub:
Feb 21 15:23:49 heisenberg kernel: BTRFS warning (device dm-0): csum failed root 257 ino 7703 off 56852480 csum 0x42d1b69c expected csum 0x3ce55621 mirror 1
Feb 21 15:23:52 heisenberg kernel: BTRFS warning (device dm-0): csum failed root 257 ino 7703 off 66146304 csum 0xc739c174 expected csum 0x62e6ce8b mirror 1
Feb 21 15:23:56 heisenberg kernel: BTRFS warning (device dm-0): csum failed root 257 ino 7703 off 87212032 csum 0x183aff6d expected csum 0x3dacaab0 mirror 1


The file (a tgz - which seems to unpack fine) was probably read, but
definitely not written to in ages...

SMART for the SSD looks ok...

Strange...

Cheers,
Chris.