Comment 64 for bug 769927

I've also found that I can manually unmount the filesystem and trigger the bug, so I don't need to rely on autofs expiring the mount (that's good since that seemed to be broken in some early pre 2.6.38-rc1 versions:

Since I have a fairly reliable reproducer, I decided to try bisecting this down. The log so far:

$ git bisect log
git bisect start '--' 'fs/'
# bad: [1bae4ce27c9c90344f23c65ea6966c50ffeae2f5] Linux 2.6.38-rc2
git bisect bad 1bae4ce27c9c90344f23c65ea6966c50ffeae2f5
# good: [3c0eee3fe6a3a1c745379547c7e7c904aa64f6d5] Linux 2.6.37
git bisect good 3c0eee3fe6a3a1c745379547c7e7c904aa64f6d5
# good: [b9d919a4ac6cf031b8e065f82ad8f1b0c9ed74b1] Merge branch 'nfs-for-2.6.38' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
git bisect good b9d919a4ac6cf031b8e065f82ad8f1b0c9ed74b1
# good: [b9d919a4ac6cf031b8e065f82ad8f1b0c9ed74b1] Merge branch 'nfs-for-2.6.38' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
git bisect good b9d919a4ac6cf031b8e065f82ad8f1b0c9ed74b1
# good: [6ab82196492a0b6968a654a06aae923b28afef0d] Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
git bisect good 6ab82196492a0b6968a654a06aae923b28afef0d
# bad: [9e8a462a0141b12e22c4a2f0c12e0542770401f0] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6
git bisect bad 9e8a462a0141b12e22c4a2f0c12e0542770401f0

...looks like I have about 5 more iterations to go.