[Devel] [PATCH RHEL9 COMMIT] fs/fuse kio: remove BUG_ON() in pcs_mrset_fini()

[Konstantin Khorenko]

The commit is pushed to "branch-rh9-5.14.0-427.44.1.vz9.80.x-ovz" and will appear at git at bitbucket.org:openvz/vzkernel.git
after rh9-5.14.0-427.44.1.vz9.80.31
------>
commit 19b0babc2ef5e3281ff4a8b464da6364d47e1457
Author: Liu Kui <kui.liu at virtuozzo.com>
Date:   Mon Apr 28 13:57:12 2025 +0800

    fs/fuse kio: remove BUG_ON() in pcs_mrset_fini()
    
    Remove the BUG_ON check as itself is a bug.
    
    Fixes: 48f7ae56ed7fd ("fs/fuse kio: implement memory region to support
    zero-copy between userspace and kernel.")
    https://virtuozzo.atlassian.net/browse/VSTOR-105104
    
    Signed-off-by: Liu Kui <kui.liu at virtuozzo.com>
    Acked-by: Alexey Kuznetsov <kuznet at virtuozzo.com>
    
    Feature: fuse: kRPC - single RPC for kernel and userspace
---
 fs/fuse/kio/pcs/pcs_mr.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/fuse/kio/pcs/pcs_mr.c b/fs/fuse/kio/pcs/pcs_mr.c
index 9d83782bd9157..cbd3b440dd1b8 100644
--- a/fs/fuse/kio/pcs/pcs_mr.c
+++ b/fs/fuse/kio/pcs/pcs_mr.c
@@ -193,7 +193,6 @@ void pcs_mrset_fini(struct pcs_mr_set *mrs)
 
 	/*clean all registered MRs*/
 	xa_for_each(&mrs->mr_xa, idx, mr) {
-		BUG_ON(kref_read(&mr->ref) != 1);
 		pcs_mr_put(mr);
 		atomic_dec(&mrs->mr_num);
 	}