Hi Javier, We update the fedora kernel process to use a git tree to submit patches now. Can I ask you to spend a few minutes to read over the new steps https://cki-project.gitlab.io/kernel-ark/submitting-contributions.html and resubmit your request as a merge request? Hopefully after the initial setup, the steps are simple enough. Thanks in advance! Cheers, Don On Thu, May 14, 2020 at 05:44:56PM +0200, Javier Martinez Canillas wrote: > --- > kernel.spec | 3 + > ...log-version-before-reading-final-eve.patch | 76 +++++++++++++++++++ > 2 files changed, 79 insertions(+) > create mode 100644 tpm-check-event-log-version-before-reading-final-eve.patch > > diff --git a/kernel.spec b/kernel.spec > index ce66ad47a5b..6ee76a76dbb 100644 > --- a/kernel.spec > +++ b/kernel.spec > @@ -911,6 +911,9 @@ Patch512: drm-dp_mst-Fix-drm_dp_send_dpcd_write-return-code.patch > # CVE-2020-10711 rhbz 1825116 1834778 > Patch513: net-netlabel-cope-with-NULL-catmap.patch > > +# https://bugzilla.redhat.com/show_bug.cgi?id=1779611 > +Patch514: tpm-check-event-log-version-before-reading-final-eve.patch > + > # END OF PATCH DEFINITIONS > > %endif > diff --git a/tpm-check-event-log-version-before-reading-final-eve.patch b/tpm-check-event-log-version-before-reading-final-eve.patch > new file mode 100644 > index 00000000000..49010406034 > --- /dev/null > +++ b/tpm-check-event-log-version-before-reading-final-eve.patch > @@ -0,0 +1,76 @@ > +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 > +From: =?UTF-8?q?Lo=C3=AFc=20Yhuel?= <loic.yhuel@xxxxxxxxx> > +Date: Tue, 12 May 2020 06:01:13 +0200 > +Subject: [PATCH] tpm: check event log version before reading final events > +MIME-Version: 1.0 > +Content-Type: text/plain; charset=UTF-8 > +Content-Transfer-Encoding: 8bit > + > +This fixes the boot issues since 5.3 on several Dell models when the TPM > +is enabled. Depending on the exact grub binary, booting the kernel would > +freeze early, or just report an error parsing the final events log. > + > +We get an event log in the SHA-1 format, which doesn't have a > +tcg_efi_specid_event_head in the first event, and there is a final events > +table which doesn't match the crypto agile format. > +__calc_tpm2_event_size reads bad "count" and "efispecid->num_algs", and > +either fails, or loops long enough for the machine to be appear frozen. > + > +So we now only parse the final events table, which is per the spec always > +supposed to be in the crypto agile format, when we got a event log in this > +format. > + > +Fixes: c46f3405692de ("tpm: Reserve the TPM final events table") > +Fixes: 166a2809d65b2 ("tpm: Don't duplicate events from the final event log in the TCG2 log") > +Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1779611 > +Signed-off-by: Loïc Yhuel <loic.yhuel@xxxxxxxxx> > +Link: https://lore.kernel.org/r/20200512040113.277768-1-loic.yhuel@xxxxxxxxx > +Reviewed-by: Javier Martinez Canillas <javierm@xxxxxxxxxx> > +Reviewed-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> > +Reviewed-by: Matthew Garrett <mjg59@xxxxxxxxxx> > +Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx> > +--- > + drivers/firmware/efi/libstub/tpm.c | 5 +++-- > + drivers/firmware/efi/tpm.c | 3 ++- > + 2 files changed, 5 insertions(+), 3 deletions(-) > + > +diff --git a/drivers/firmware/efi/libstub/tpm.c b/drivers/firmware/efi/libstub/tpm.c > +index 1d59e103a2e..e9a684637b7 100644 > +--- a/drivers/firmware/efi/libstub/tpm.c > ++++ b/drivers/firmware/efi/libstub/tpm.c > +@@ -54,7 +54,7 @@ void efi_retrieve_tpm2_eventlog(void) > + efi_status_t status; > + efi_physical_addr_t log_location = 0, log_last_entry = 0; > + struct linux_efi_tpm_eventlog *log_tbl = NULL; > +- struct efi_tcg2_final_events_table *final_events_table; > ++ struct efi_tcg2_final_events_table *final_events_table = NULL; > + unsigned long first_entry_addr, last_entry_addr; > + size_t log_size, last_entry_size; > + efi_bool_t truncated; > +@@ -127,7 +127,8 @@ void efi_retrieve_tpm2_eventlog(void) > + * Figure out whether any events have already been logged to the > + * final events structure, and if so how much space they take up > + */ > +- final_events_table = get_efi_config_table(LINUX_EFI_TPM_FINAL_LOG_GUID); > ++ if (version == EFI_TCG2_EVENT_LOG_FORMAT_TCG_2) > ++ final_events_table = get_efi_config_table(LINUX_EFI_TPM_FINAL_LOG_GUID); > + if (final_events_table && final_events_table->nr_events) { > + struct tcg_pcr_event2_head *header; > + int offset; > +diff --git a/drivers/firmware/efi/tpm.c b/drivers/firmware/efi/tpm.c > +index 55b031d2c98..77e101a395e 100644 > +--- a/drivers/firmware/efi/tpm.c > ++++ b/drivers/firmware/efi/tpm.c > +@@ -62,7 +62,8 @@ int __init efi_tpm_eventlog_init(void) > + tbl_size = sizeof(*log_tbl) + log_tbl->size; > + memblock_reserve(efi.tpm_log, tbl_size); > + > +- if (efi.tpm_final_log == EFI_INVALID_TABLE_ADDR) > ++ if (efi.tpm_final_log == EFI_INVALID_TABLE_ADDR || > ++ log_tbl->version != EFI_TCG2_EVENT_LOG_FORMAT_TCG_2) > + goto out; > + > + final_tbl = early_memremap(efi.tpm_final_log, sizeof(*final_tbl)); > +-- > +2.26.2 > + > -- > 2.26.2 > _______________________________________________ > kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx > Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: https://lists.fedoraproject.org/archives/list/kernel@xxxxxxxxxxxxxxxxxxxxxxx _______________________________________________ kernel mailing list -- kernel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to kernel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/kernel@xxxxxxxxxxxxxxxxxxxxxxx
