On Tue, Jul 18, 2017 at 09:11:49AM -0700, Josh Zimmerman wrote: > On Tue, Jul 18, 2017 at 8:49 AM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > On Fri, Jul 14, 2017 at 12:58:03PM -0700, Josh Zimmerman wrote: > >> Backport of d1bd4a792d3961a04e6154118816b00167aad91a upstream. > >> > >> If a TPM2 loses power without a TPM2_Shutdown command being issued (a > >> "disorderly reboot"), it may lose some state that has yet to be > >> persisted to NVRam, and will increment the DA counter. After the DA > >> counter gets sufficiently large, the TPM will lock the user out. > >> > >> NOTE: This only changes behavior on TPM2 devices. Since TPM1 uses sysfs, > >> and sysfs relies on implicit locking on chip->ops, it is not safe to > >> allow this code to run in TPM1, or to add sysfs support to TPM2, until > >> that locking is made explicit. > >> --- > >> drivers/char/tpm/tpm-chip.c | 36 ++++++++++++++++++++++++++++++++++++ > >> drivers/char/tpm/tpm-sysfs.c | 7 +++++++ > >> 2 files changed, 43 insertions(+) > >> > > > > Again no signed-off-by :( > > Oops, sorry about that. > > Did you pull in the two cherry-picks as well? They're needed for these > two to build and merge cleanly. > > I can send a v2 if you need with a corrected signed-off-by and correct > number of patches in the cover letter. I should have them all now, and you should have gotten emails about it... thanks, greg k-h