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ceph: fix a buffer leak in __ceph_setxattr()

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commit 5d3cc36b4e77a27ce7b686b7c59c7072bcb3fa8e upstream.

The old_blob in __ceph_setxattr() can store
ci->i_xattrs.prealloc_blob value during the retry.
However, it is never called the ceph_buffer_put()
for the old_blob object. This patch fixes the issue of
the buffer leak.

Cc: stable@vger.kernel.org
Signed-off-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com>
Reviewed-by: Alex Markuze <amarkuze@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ulrich Hecht <uli@kernel.org>
This commit is contained in:
Viacheslav Dubeyko
2026-04-09 12:26:02 -07:00
committed by Ulrich Hecht
parent eb5cdcb9df
commit 0d3e39ecf5
1 changed files with 1 additions and 0 deletions
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1
fs/ceph/xattr.c
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@ -1132,6 +1132,7 @@ retry:
do_sync:
spin_unlock(&ci->i_ceph_lock);
ceph_buffer_put(old_blob);
do_sync_unlocked:
if (lock_snap_rwsem)
up_read(&mdsc->snap_rwsem);