From: Christoph Hellwig hch@lst.de
stable inclusion from stable-5.10.50 commit 0317b728d8aee5cb065b5fbe9f99c97954bf2b4a bugzilla: 174522 https://gitee.com/openeuler/kernel/issues/I4DNFY
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ 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 Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- fs/pstore/Kconfig | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig index e16a49ebfe54..8efe60487b48 100644 --- 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