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Eric W. Biederman authored
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: stable@vger.kernel.org Fixes: aeaa4a79 ("fs: Call d_automount with the filesystems creds") Reported-by:
Seth Forshee <seth.forshee@canonical.com> Tested-by:
Seth Forshee <seth.forshee@canonical.com> Signed-off-by:
"Eric W. Biederman" <ebiederm@xmission.com>
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