bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-05 23:05:25 -04:00
Code Issues Packages Projects Releases Wiki Activity

pivot_root(2): use old_mp.mp->m_dentry instead of old.dentry

Browse Source 
That kills the last place where callers of lock_mount(path, &mp)
used path->dentry.

Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2025-08-20 00:26:44 -04:00
parent 6bfb6938e2
commit a2bdb7d8dc
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
fs/namespace.c
View File

@@ -4670,7 +4670,7 @@ SYSCALL_DEFINE2(pivot_root, const char __user *, new_root,
if (!mnt_has_parent(new_mnt))
return -EINVAL; /* absolute root */
/* make sure we can reach put_old from new_root */
if (!is_path_reachable(old_mnt, old.dentry, &new))
if (!is_path_reachable(old_mnt, old_mp.mp->m_dentry, &new))
return -EINVAL;
/* make certain new is below the root */
if (!is_path_reachable(new_mnt, new.dentry, &root))