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(parent: becd201) | patch
nfsd4: fix NULL dereference in nfsd/clients display code
authorJ. Bruce Fields <bfields@redhat.com>
Wed, 15 Jul 2020 17:31:36 +0000 (13:31 -0400)
committerJ. Bruce Fields <bfields@redhat.com>
Wed, 22 Jul 2020 20:47:14 +0000 (16:47 -0400)
commit9affa435817711861d774f5626c393c80f16d044
treecdbc309d8b515f478f1595b617911b84141bc028tree | snapshot
parentbecd2014923ff259b8155df58199f605dd50cb8fcommit | diff
nfsd4: fix NULL dereference in nfsd/clients display code

We hold the cl_lock here, and that's enough to keep stateid's from going
away, but it's not enough to prevent the files they point to from going
away.  Take fi_lock and a reference and check for NULL, as we do in
other code.

Reported-by: NeilBrown <neilb@suse.de>
Fixes: 78599c42ae3c ("nfsd4: add file to display list of client's opens")
Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
fs/nfsd/nfs4state.c diff | blob | history
Domain: System / Kernel;