5.15-stable review patch. If anyone has any objections, please let me know.
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From: Jeff Layton jlayton@kernel.org
[ Upstream commit d3aefd2b29ff5ffdeb5c06a7d3191a027a18cdb8 ]
If the namespace doesn't match the one in "net", then we'll continue, but that doesn't cause another rhashtable_walk_next call, so it will loop infinitely.
Fixes: ce502f81ba88 ("NFSD: Convert the filecache to use rhashtable") Reported-by: Petr Vorel pvorel@suse.cz Link: https://lore.kernel.org/ltp/Y1%2FP8gDAcWC%2F+VR3@pevik/ Signed-off-by: Jeff Layton jlayton@kernel.org Signed-off-by: Chuck Lever chuck.lever@oracle.com --- fs/nfsd/filecache.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c index 0b19eb015c6c8..024adcbe67e95 100644 --- a/fs/nfsd/filecache.c +++ b/fs/nfsd/filecache.c @@ -892,9 +892,8 @@ __nfsd_file_cache_purge(struct net *net)
nf = rhashtable_walk_next(&iter); while (!IS_ERR_OR_NULL(nf)) { - if (net && nf->nf_net != net) - continue; - nfsd_file_unhash_and_dispose(nf, &dispose); + if (!net || nf->nf_net == net) + nfsd_file_unhash_and_dispose(nf, &dispose); nf = rhashtable_walk_next(&iter); }