Comment 83 for bug 769927

...and a little more -- show the mnt_count. It's 2 for both mounts prior to calling finish_automount:

[ 486.108984] SELinux: initialized (dev 0:2a, type nfs4), uses genfs_contexts
[ 486.117197] mount.nfs4 used greatest stack depth: 2304 bytes left
[ 486.127215] 1494: --> nfs_d_automount()
[ 486.128641] nfs_d_automount(1494): enter
[ 486.130170] 1494: dentry=ffff8800125dc3f0 path=/misc/salusa/scratch
[ 486.139573] 1499: --> nfs_d_automount()
[ 486.143287] SELinux: initialized (dev 0:2b, type nfs4), uses genfs_contexts
[ 486.143841] nfs_d_automount(1494): done, success
[ 486.145655] 1494: <-- nfs_d_automount() = ffff880011941140
[ 486.147213] follow_automount(1494): mnt->mnt_count = 2
[ 486.148720] nfs_d_automount(1499): enter
[ 486.149828] 1499: dentry=ffff8800125dc3f0 path=/misc/salusa/scratch
[ 486.154517] follow_automount(1494): finish_automount returned 0
[ 486.168236] nfs_d_automount(1499): done, success
[ 486.170616] 1499: <-- nfs_d_automount() = ffff880011941280
[ 486.174350] follow_automount(1499): mnt->mnt_count = 2
[ 486.180294] follow_automount(1499): finish_automount returned -16