commit cb0aae0e31c632c407a2cab4307be85a001d4d98
author Zheng Bin <zhengbin13@huawei.com> Mon Jun 15 09:21:53 2020 +0800
committer Dominique Martinet <asmadeus@codewreck.org> Sun Jul 19 14:58:47 2020 +0200
tree 36921853f7a5edc29257652cf23fbd77f1caeef3
parent 66246641609b3cbfc87e805ded1f018b5c9cecf4

9p: Fix memory leak in v9fs_mount

v9fs_mount
  v9fs_session_init
    v9fs_cache_session_get_cookie
      v9fs_random_cachetag                     -->alloc cachetag
      v9ses->fscache = fscache_acquire_cookie  -->maybe NULL
  sb = sget                                    -->fail, goto clunk
clunk_fid:
  v9fs_session_close
    if (v9ses->fscache)                        -->NULL
      kfree(v9ses->cachetag)

Thus memleak happens.

Link: http://lkml.kernel.org/r/20200615012153.89538-1-zhengbin13@huawei.com
Fixes: 60e78d2c993e ("9p: Add fscache support to 9p")
Cc: <stable@vger.kernel.org> # v2.6.32+
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>