pstore: Remove filesystem records when backend is unregistered

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If a backend was unloaded without having first removed all its
associated records in pstorefs, subsequent removals would crash while
attempting to call into the now missing backend. Add automatic removal
from the tree in pstore_unregister(), so that no references to the
backend remain.

Reported-by: Luis Henriques <lhenriques@suse.com>
Link: https://lore.kernel.org/lkml/87o8yrmv69.fsf@suse.com
Link: https://lore.kernel.org/lkml/20200506152114.50375-11-keescook@chromium.org/
Signed-off-by: Kees Cook <keescook@chromium.org>

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This commit is contained in:

Kees Cook 2020-05-04 19:46:53 -07:00

parent 78c83c828c

commit 609e28bb13

3 changed files with 36 additions and 0 deletions

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32

fs/pstore/inode.c

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1

fs/pstore/internal.h

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3

fs/pstore/platform.c

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