** Description changed:
+ [SRU Justification]
+
+ [Impact]
+ Some systems may hang at boot. With "earlycon=efifb", more debug
+ messages for EFI are dumpped. Last call trace as:
+
+ RIP: 0010:efi_tpm_eventlog_init+0x1aa/0x2a2
+ ...
+ Call Trace:
+ efi_config_parse_tables+0x12d/0x213
+ efi_init+0x218/0x36b
+ ? e820__print_table+0x65/0x6e
+ setup_arch+458/0xa84
+
+ This affects all mainline kernel since v5.2 to v5.7.6. Fix available in
+ v5.8-rc3 and has been backported to v5.7.7, v5.4.50.
+
+ [Fix]
+ Commit ea3cdcaa43b0 ("efi/tpm: Verify event log header before parsing")
+ fixes commit 6b0326190205 ("efi: Attempt to get the TCG2 event log in
+ the boot stub").
+
+ [Test Case]
+ So far it can be easily reproduced with a green installation of Focal on
+ USB key on a few Dell platforms.
+
+ [Regression Potential]
+ Low. This checks validity of tmp event log header before parsing them,
+ so it affects only platforms might generate invalid entries only.
+
+ [Other Info]
+ This affects -generic for eoan and oem-5.6 for focal, but the former has
+ be EOL-ed.
+
+ ========== Original Bug Description ==========
+
[Summary] device doesn't boot with kernel older than v5.7.7 on USB key
[Steps to reproduce]
1. Try to boot a green installation of Ubuntu Focal on a USB key.
[Expected result]
Boot up normally.
[Actual result]
Stuck at "loading initial ramdisk". With "earlycon=efifb", more debug
messages for EFI are dumpped. Last call trace as:
- RIP: 0010:efi_tpm_eventlog_init+0x1aa/0x2a2
- ...
- Call Trace:
- efi_config_parse_tables+0x12d/0x213
- efi_init+0x218/0x36b
- ? e820__print_table+0x65/0x6e
- setup_arch+458/0xa84
+ RIP: 0010:efi_tpm_eventlog_init+0x1aa/0x2a2
+ ...
+ Call Trace:
+ efi_config_parse_tables+0x12d/0x213
+ efi_init+0x218/0x36b
+ ? e820__print_table+0x65/0x6e
+ setup_arch+458/0xa84
[Failure rate]
10/10
[Additional information]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ea3cdcaa43b08c9a747639f545b0ed5cca47f87e
("efi/tpm: Verify event log header before parsing") fixes in 6b0326190205
("efi: Attempt to get the TCG2 event log in the boot stub").
The fix is in linux-5.7.y and v5.8-rc3, and focal 5.4 and oem-5.6 are
affected.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-16-generic 5.8.0-16.17
ProcVersionSignature: Ubuntu 5.8.0-16.17-generic 5.8.0
Uname: Linux 5.8.0-16-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.6
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/hwC0D2',
'/dev/snd/pcmC0D5p', '/dev/snd/pcmC0D4p', '/dev/snd/pcmC0D3p',
'/dev/snd/pcmC0D1c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c',
'/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CasperMD5CheckResult: skip
Date: Tue Aug 25 02:51:58 2020
InstallationDate: Installed on 2020-07-21 (35 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Dell Inc. Inspiron 3500
ProcEnviron:
- TERM=xterm-256color
- PATH=(custom, no user)
- LANG=en_US.UTF-8
- SHELL=/bin/bash
+ TERM=xterm-256color
+ PATH=(custom, no user)
+ LANG=en_US.UTF-8
+ SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-16-generic
root=UUID=7c53c615-c466-43d7-9ca3-f8b8d895b7b0 ro initcall_debug debug
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
- linux-restricted-modules-5.8.0-16-generic N/A
- linux-backports-modules-5.8.0-16-generic N/A
- linux-firmware 1.187.2
+ linux-restricted-modules-5.8.0-16-generic N/A
+ linux-backports-modules-5.8.0-16-generic N/A
+ linux-firmware 1.187.2
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/05/2020
dmi.bios.release: 0.4
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 0.4.3
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr0.4.3:bd08/05/2020:br0.4:svnDellInc.:pnInspiron3500:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct10:cvr:
dmi.product.family: Inspiron
dmi.product.name: Inspiron 3500
dmi.product.sku: 0A25
dmi.sys.vendor: Dell Inc.
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https://bugs.launchpad.net/bugs/1892827
Title:
device doesn't boot with kernel older than v5.7.7 on a usb key: hang
at efi_tpm_eventlog_init
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