From 32ce6b3a83b71d8abf0c0837dc78775f16c9902f Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Sun, 8 Jun 2025 18:08:51 -0400 Subject: [PATCH] NFSD: Avoid corruption of a referring call list The new code neglects to remove a freshly-allocated RCL from the callback's referring call list when no matching referring call is found. Reported-by: kernel test robot Reported-by: Dan Carpenter Closes: https://lore.kernel.org/r/202505171002.cE46sdj5-lkp@intel.com/ Fixes: 4f3c8d8c9e10 ("NFSD: Implement CB_SEQUENCE referring call lists") Reviewed-by: Jeff Layton Signed-off-by: Chuck Lever --- fs/nfsd/nfs4callback.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index ccb00aa93be0..e00b2aea8da2 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -1409,6 +1409,7 @@ void nfsd41_cb_referring_call(struct nfsd4_callback *cb, out: if (!rcl->__nr_referring_calls) { cb->cb_nr_referring_call_list--; + list_del(&rcl->__list); kfree(rcl); } } -- 2.50.1