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| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-12-09 18:38:24 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-12-21 21:42:29 -0500 |
| commit | 2e2cbaf920d14de9a96180ddefd6861bcc46f07d (patch) | |
| tree | 57d2cf2250889401bdd946a392b361fdb9290aba /fs/hostfs | |
| parent | 1a97d899ecbc4b60c8e8f9b41cde443510b5b1bf (diff) | |
| download | lwn-2e2cbaf920d14de9a96180ddefd6861bcc46f07d.tar.gz lwn-2e2cbaf920d14de9a96180ddefd6861bcc46f07d.zip | |
fix hostfs_open() use of ->f_path.dentry
this is one of the cases where we need to use d_real() - we are
using more than the name of dentry here. ->d_sb is used as well,
so in case of hostfs being used as a layer we get the wrong
superblock.
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Tested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/hostfs')
| -rw-r--r-- | fs/hostfs/hostfs_kern.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index c070c0d8e3e9..aea35459d390 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -315,7 +315,7 @@ retry: if (mode & FMODE_WRITE) r = w = 1; - name = dentry_name(file->f_path.dentry); + name = dentry_name(d_real(file->f_path.dentry, file->f_inode)); if (name == NULL) return -ENOMEM; |