On Mon, Jun 21, 2021 at 02:04:52PM +0200, Hans de Goede wrote: > Hi, > > On 6/14/21 3:33 PM, Hans de Goede wrote: > > Hi, > > > > On 6/1/21 6:04 PM, Hans de Goede wrote: > >> Hi, > >> > >> On 5/31/21 6:36 AM, Jarkko Sakkinen wrote: > >>>> Interestingly enough the first backtrace is also happening on a: > >>>> "Dell Inc. XPS 13 9310/0MRT12, BIOS 2.2.0 04/06/2021" > >>>> > >>>> So it seems that at least with 5.12.6 (which has the last 2 fixes) > >>>> all reports are about the XPS 13 9310. I wonder if there is an > >>>> issue with the TPM interrupt line on the XPS 13 9310; I've asked the > >>>> reporters to try adding tpm_tis.interrupts=0 to their kernel commandline. > >>> > >>> This is helpful for sure that these all are happening on matching hardware. > >> > >> So our kernel-backtrace tracking info (ABRT) just recorded a third backtrace > >> with a kernel >= 5.12.6, again on the XPS 13 9310, so now we have 3 variants: > >> > >> 1. Backtrace starting with a call to ima_add_boot_aggregate > >> https://bugzilla.redhat.com/show_bug.cgi?id=1963712 > >> > >> 2. Backtrace starting with a call to tpm_dev_async_work: > >> https://bugzilla.redhat.com/show_bug.cgi?id=1964974 > >> (note this one is not easily reproducible) > >> > >> 3. Backtrace starting with a call to rng_dev_read: > >> https://bugzilla.redhat.com/show_bug.cgi?id=1920510 > >> > >> 3. is the new one. All bugs linked above are public, all 3 backtraces > >> so far have only been reported on the XPS 13 9310 (with kernel >= 5.12.6) > >> and I've asked all the reporters to check if tpm_tis.interrupts=0 helps. > > > > Quick status update, I've got a response from a XPS 13 9310 user in: > > > > https://bugzilla.redhat.com/show_bug.cgi?id=1920510 > > > > Indicating that a. he can reproduce this with the latest >= 5.12.6 kernels; > > and b. it goes away when specifying tpm_tis.interrupts=0 as I expected > > (I expected this because all the bug-reports started when the interrupt > > code got fixed/re-enabled a while ago). > > One more status update. > > - A new 4th variant of the backtrace has been spotted, where the problem hits > when called from probe() -> tpm2_auto_startup -> tpm2_do_selftest, see: > https://bugzilla.redhat.com/show_bug.cgi?id=1958381 > > - So far all reports with kernel >= 5.12.6 have been on a Dell XPS 13 9310 > models. But the new variant is happening on a Dell XPS 15 9500 and the > backtrace starting at ima_add_boot_aggregate is also being reported on > a Dell XPS 15 9500 (as well as on the XPS 13 9310). > > Regards, > > Hans OK, I'll have to query if I could borrow that laptop from someone. It's fairly common laptop, i.e. might be possible. /Jarkko
