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| author | Eric W. Biederman <[email protected]> | 2016-09-30 16:28:05 +0000 |
|---|---|---|
| committer | Eric W. Biederman <[email protected]> | 2016-09-30 17:48:01 +0000 |
| commit | 069d5ac9ae0d271903cc4607890616418118379a (patch) | |
| tree | c62c1c69d59207ef666ff55d0e44ecae847351f1 /net/switchdev/switchdev.c | |
| parent | mnt: Add a per mount namespace limit on the number of mounts (diff) | |
| download | kernel-069d5ac9ae0d271903cc4607890616418118379a.tar.gz kernel-069d5ac9ae0d271903cc4607890616418118379a.zip | |
autofs: Fix automounts by using current_real_cred()->uid
Seth Forshee reports that in 4.8-rcN some automounts are failing
because the requesting the automount changed.
The relevant call path is:
follow_automount()
->d_automount
autofs4_d_automount
autofs4_mount_wait
autofs4_wait
In autofs4_wait wq_uid and wq_gid are set to current_uid() and
current_gid respectively. With follow_automount now overriding creds
uid that we export to userspace changes and that breaks existing
setups.
To remove the regression set wq_uid and wq_gid from
current_real_cred()->uid and current_real_cred()->gid respectively.
This restores the current behavior as current->real_cred is identical
to current->cred except when override creds are used.
Cc: [email protected]
Fixes: aeaa4a79ff6a ("fs: Call d_automount with the filesystems creds")
Reported-by: Seth Forshee <[email protected]>
Tested-by: Seth Forshee <[email protected]>
Signed-off-by: "Eric W. Biederman" <[email protected]>
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions