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| author | Muchun Song <songmuchun@bytedance.com> | 2023-05-23 10:40:17 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-31 19:03:49 +0100 |
| commit | 30480b988f88c279752f3202a26b6fee5f586aef (patch) | |
| tree | fda750c9a4a86d34cfd2f3da57b2fddba9dd2f68 /fs/kernfs | |
| parent | 6bea9ea6bb21ccee2aad0aa2a845499e0aa2f7f9 (diff) | |
| download | linux-30480b988f88c279752f3202a26b6fee5f586aef.tar.gz linux-30480b988f88c279752f3202a26b6fee5f586aef.tar.bz2 linux-30480b988f88c279752f3202a26b6fee5f586aef.zip | |
kernfs: fix missing kernfs_idr_lock to remove an ID from the IDR
The root->ino_idr is supposed to be protected by kernfs_idr_lock, fix
it.
Fixes: 488dee96bb62 ("kernfs: allow creating kernfs objects with arbitrary uid/gid")
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20230523024017.24851-1-songmuchun@bytedance.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/kernfs')
| -rw-r--r-- | fs/kernfs/dir.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index 45b6919903e6..5a1a4af9d3d2 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -655,7 +655,9 @@ static struct kernfs_node *__kernfs_new_node(struct kernfs_root *root, return kn; err_out3: + spin_lock(&kernfs_idr_lock); idr_remove(&root->ino_idr, (u32)kernfs_ino(kn)); + spin_unlock(&kernfs_idr_lock); err_out2: kmem_cache_free(kernfs_node_cache, kn); err_out1: |