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| author | Scott Mayhew <smayhew@redhat.com> | 2021-11-03 06:24:40 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-11-03 08:47:51 -0400 |
| commit | 576acc259146af848cec0940f573f7125a116b9f (patch) | |
| tree | fbc8c76b6b3c63888bc8457725da1506da41af11 /net | |
| parent | edfa0b16bf9eb1e2c93e7e846e0e02c51395ca7b (diff) | |
| download | linux-576acc259146af848cec0940f573f7125a116b9f.tar.bz2 | |
nfs4: take a reference on the nfs_client when running FREE_STATEID
During umount, the session slot tables are freed. If there are
outstanding FREE_STATEID tasks, a use-after-free and slab corruption can
occur when rpc_exit_task calls rpc_call_done -> nfs41_sequence_done ->
nfs4_sequence_process/nfs41_sequence_free_slot.
Prevent that from happening by taking a reference on the nfs_client in
nfs41_free_stateid and putting it in nfs41_free_stateid_release.
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions