Dominique Martinet ef3047fca1 fscache_cookie_enabled: check cookie is valid before accessing it ...

commit 0dc54bd4d6e03be1f0b678c4297170b79f1a44ab upstream.

fscache_cookie_enabled() could be called on NULL cookies and cause a
null pointer dereference when accessing cookie flags: just make sure
the cookie is valid first

Suggested-by: David Howells <dhowells@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Cc: Jeffrey E Altman <jaltman@auristor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-01-11 15:35:11 +01:00

30 KiB

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