mark pstore-blk as broken

[ Upstream commit d07f3b081ee632268786601f55e1334d1f68b997 ]

pstore-blk just pokes directly into the pagecache for the block
device without going through the file operations for that by faking
up it's own file operations that do not match the block device ones.

As this breaks the control of the block layer of it's page cache,
and even now just works by accident only the best thing is to just
disable this driver.

Fixes: 17639f67c1d6 ("pstore/blk: Introduce backend for block devices")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210608161327.1537919-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig
index e16a49ebfe546dbecf0e64c8e5838a180161ebb2..8efe60487b486be7f3861090147ba554d170eaaa 100644 (file)
--- a/fs/pstore/Kconfig
+++ b/fs/pstore/Kconfig
@@ -165,6 +165,7 @@ config PSTORE_BLK
        tristate "Log panic/oops to a block device"
        depends on PSTORE
        depends on BLOCK
+       depends on BROKEN
        select PSTORE_ZONE
        default n
        help