Subject: [Bug 205283] BUG: KASAN: global-out-of-bounds in _copy_to_iter+0x3d4/0x5a8

From: [email-masked]
Date: Sun, 15 Dec 2019 15:54:38 +0000

https://bugzilla.kernel.org/show_bug.cgi?id=205283

--- Comment #3 from Erhard F. ([email-masked]) ---
Steps to reproduce:

1.) Configure G4 kernel with KASAN enabled
2.) Disable KASAN in lib/raid6/Makefile with KASAN_SANITIZE := n (to allow the
btrfs module to load)
3.) # modprobe -v btrfs
4.) # modprobe -r -v btrfs
5.) # modprobe -v btrfs

The 2nd time btrfs gets loaded I get this hit. But only once. Further attemps
to remove/load btrfs don't provoke the KASAN hit.

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