5.15-stable review patch. If anyone has any objections, please let me know.
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From: Miklos Szeredi mszeredi@redhat.com
[ Upstream commit b1fe686a765e6c0d71811d825b5a1585a202b777 ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- 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 4b8f094345e12..55b7ca26fb8ab 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -899,7 +899,6 @@ 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 97dc24557bf24..62b4143ccf26c 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -413,8 +413,11 @@ 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);