The root inode is assumed to be always hashed. Do not unhash the root inode even if it is marked BAD.
Fixes: 5d069dbe8aaf ("fuse: fix bad inode") Cc: stable@vger.kernel.org # v5.11 Signed-off-by: Miklos Szeredi mszeredi@redhat.com --- fs/fuse/fuse_i.h | 1 - fs/fuse/inode.c | 7 +++++-- 2 files changed, 5 insertions(+), 3 deletions(-)
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 7bd3552b1e80..4ef6087f0e5c 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -994,7 +994,6 @@ static inline bool fuse_stale_inode(const struct inode *inode, int generation,
static inline void fuse_make_bad(struct inode *inode) { - remove_inode_hash(inode); set_bit(FUSE_I_BAD, &get_fuse_inode(inode)->state); }
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index c26a84439934..aa0614e8791c 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -475,8 +475,11 @@ struct inode *fuse_iget(struct super_block *sb, u64 nodeid, } else if (fuse_stale_inode(inode, generation, attr)) { /* nodeid was reused, any I/O on the old inode should fail */ fuse_make_bad(inode); - iput(inode); - goto retry; + if (inode != d_inode(sb->s_root)) { + remove_inode_hash(inode); + iput(inode); + goto retry; + } } fi = get_fuse_inode(inode); spin_lock(&fi->lock);