bcachefs: Fix possible null deref on mount

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Ensure that the block device pointer in a superblock handle is not
null before dereferencing it in bch2_dev_to_fs. The block device pointer
may be null when mounting a new bcachefs filesystem given another mounted
bcachefs filesystem exists that has at least one device that is offline.

Signed-off-by: Dan Robertson <dan@dlrobertson.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

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Dan Robertson 2021-05-12 14:07:57 -04:00 • committed by Kent Overstreet

parent baf056b87d

commit ec4ab9d2fc

1 changed files with 1 additions and 1 deletions

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fs/bcachefs/super.c

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