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
