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Merge tag 'vfs-6.19-rc1.autofs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

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Pull autofs update from Christian Brauner:
 "Prevent futile mount triggers in private mount namespaces.

  Fix a problematic loop in autofs when a mount namespace contains
  autofs mounts that are propagation private and there is no
  namespace-specific automount daemon to handle possible automounting.

  Previously, attempted path resolution would loop until MAXSYMLINKS was
  reached before failing, causing significant noise in the log.

 The fix adds a check in autofs ->d_automount() so that the VFS can
 immediately return EPERM in this case. Since the mount is propagation
 private, EPERM is the most appropriate error code"

* tag 'vfs-6.19-rc1.autofs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
  autofs: dont trigger mount if it cant succeed
This commit is contained in:
Linus Torvalds
2025-12-01 16:38:21 -08:00
parent d0deeb803c 922a6f34c1
commit ffbf700df2
6 changed files with 22 additions and 0 deletions
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include/linux/fs.h
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@@ -2840,6 +2840,7 @@ extern struct file * open_exec(const char *);
/* fs/dcache.c -- generic fs support functions */
extern bool is_subdir(struct dentry *, struct dentry *);
extern bool path_is_under(const struct path *, const struct path *);
u64 vfsmount_to_propagation_flags(struct vfsmount *mnt);
extern char *file_path(struct file *, char *, int);