Messages in this thread |  | | From | Christian Brauner <> | | Subject | [GIT PULL 15/17 for v6.19] autofs | | Date | Fri, 28 Nov 2025 17:48:26 +0100 |
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Hey Linus,
/* Summary */ 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.
/* Testing */
gcc (Debian 14.2.0-19) 14.2.0 Debian clang version 19.1.7 (3+b1)
No build failures or warnings were observed.
/* Conflicts */
Merge conflicts with mainline =============================
No known conflicts.
Merge conflicts with other trees ================================
[1]: https://lore.kernel.org/linux-next/20251121153059.48e3d2fa@canb.auug.org.au
The following changes since commit 3a8660878839faadb4f1a6dd72c3179c1df56787:
Linux 6.18-rc1 (2025-10-12 13:42:36 -0700)
are available in the Git repository at:
git@gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs tags/vfs-6.19-rc1.autofs
for you to fetch changes up to 922a6f34c1756d2b0c35d9b2d915b8af19e85965:
autofs: dont trigger mount if it cant succeed (2025-11-19 11:14:02 +0100)
Please consider pulling these changes from the signed vfs-6.19-rc1.autofs tag.
Thanks! Christian
---------------------------------------------------------------- vfs-6.19-rc1.autofs
---------------------------------------------------------------- Ian Kent (1): autofs: dont trigger mount if it cant succeed
fs/autofs/autofs_i.h | 5 +++++ fs/autofs/dev-ioctl.c | 1 + fs/autofs/inode.c | 1 + fs/autofs/root.c | 8 ++++++++ fs/namespace.c | 6 ++++++ include/linux/fs.h | 1 + 6 files changed, 22 insertions(+)
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