https://lists.ubuntu.com/archives/kernel-team/2018-August/095108.html
** Description changed:
+ == SRU Justification ==
+ A regression was introduced where ext4_check_descriptors() was getting
+ called before s_gdb_count was initialized. This regression was
+ introduced to Xenial in 4.4.0-134. This is fixed by mainline commit
+ 44de022c4382.
+
+ Commit 44de022c4382 was also cc'd to upstream stable. However, it has
+ not made it's way into Xenial via stable updates as of yet.
+
+ == Fix ==
+ 44de022c4382 ("ext4: fix false negatives *and* false positives in
ext4_check_descriptors()")
+
+ == Regression Potential ==
+ Low. This commit has been cc'd upstream stable, so it has had
+ additional upstream review.
+
+ == Test Case ==
+ A test kernel was built with this patch and tested by the original bug
reporter.
+ The bug reporter states the test kernel resolved the bug.
+
+
+
+
+
Hello,
In 16.04 lts (Ubuntu 4.4.0-134.160-generic 4.4.140) with all partitions
in ext4 with flag meta_bg :
kernel: [ 1905.799557] EXT4-fs (dm-7): ext4_check_descriptors: Block bitmap
for group 0 overlaps block group descriptors
kernel: [ 1905.799858] EXT4-fs (dm-7): group descriptors corrupted!
Go back with the kernel 4.4.0-133-generic and all partitions mount
correctly.
It looks like this:
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=44de022c4382541cebdd6de4465d1f4f465ff1dd
The patch is available in 4.4.147 (https://lwn.net/Articles/762083/)
- ---
+ ---
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code
2: ls: cannot access '/dev/snd/': No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
CRDA: N/A
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=/dev/mapper/vg_system-lv_system_swap
InstallationDate: Installed on 2017-04-28 (488 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory
Lsusb: Error: [Errno 2] No such file or directory
MachineType: VMware, Inc. VMware Virtual Platform
Package: linux (not installed)
PciMultimedia:
-
+
ProcEnviron:
- TERM=xterm
- PATH=(custom, no user)
- LANG=fr_FR.UTF-8
- SHELL=/bin/bash
+ TERM=xterm
+ PATH=(custom, no user)
+ LANG=fr_FR.UTF-8
+ SHELL=/bin/bash
ProcFB:
-
+
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-134-generic
root=/dev/mapper/vg_system-lv_system_root ro ipv6.disable=1
ProcVersionSignature: Ubuntu 4.4.0-134.160-generic 4.4.140
RelatedPackageVersions:
- linux-restricted-modules-4.4.0-134-generic N/A
- linux-backports-modules-4.4.0-134-generic N/A
- linux-firmware N/A
+ linux-restricted-modules-4.4.0-134-generic N/A
+ linux-backports-modules-4.4.0-134-generic N/A
+ linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial xenial
Uname: Linux 4.4.0-134-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
-
+
_MarkForUpload: True
dmi.bios.date: 07/31/2013
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 6.00
dmi.board.name: 440BX Desktop Reference Platform
dmi.board.vendor: Intel Corporation
dmi.board.version: None
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd07/31/2013:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:
dmi.product.name: VMware Virtual Platform
dmi.product.version: None
dmi.sys.vendor: VMware, Inc.
- ---
+ ---
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code
2: ls: cannot access '/dev/snd/': No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory
CRDA: N/A
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=/dev/mapper/vg_system-lv_system_swap
InstallationDate: Installed on 2017-04-28 (488 days ago)
InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
IwConfig: Error: [Errno 2] No such file or directory
Lsusb: Error: [Errno 2] No such file or directory
MachineType: VMware, Inc. VMware Virtual Platform
Package: linux (not installed)
PciMultimedia:
-
+
ProcEnviron:
- TERM=xterm
- PATH=(custom, no user)
- LANG=fr_FR.UTF-8
- SHELL=/bin/bash
+ TERM=xterm
+ PATH=(custom, no user)
+ LANG=fr_FR.UTF-8
+ SHELL=/bin/bash
ProcFB:
-
+
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-134-generic
root=/dev/mapper/vg_system-lv_system_root ro ipv6.disable=1
ProcVersionSignature: Ubuntu 4.4.0-134.160-generic 4.4.140
RelatedPackageVersions:
- linux-restricted-modules-4.4.0-134-generic N/A
- linux-backports-modules-4.4.0-134-generic N/A
- linux-firmware N/A
+ linux-restricted-modules-4.4.0-134-generic N/A
+ linux-backports-modules-4.4.0-134-generic N/A
+ linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory
Tags: xenial xenial xenial
Uname: Linux 4.4.0-134-generic x86_64
UnreportableReason: The report belongs to a package that is not installed.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
-
+
WifiSyslog:
- août 29 21:01:28 Template1604LTS kernel: [UFW BLOCK] IN=admin OUT=
MAC=01:00:5e:00:00:01:a0:1b:29:89:4f:1a:08:00 SRC=192.168.1.1 DST=224.0.0.1
LEN=32 TOS=0x00 PREC=0x80 TTL=1 ID=0 DF PROTO=2
- août 29 21:02:08 Template1604LTS kernel: [UFW BLOCK] IN=admin OUT=
MAC=01:00:5e:00:00:01:a0:1b:29:89:4f:1a:08:00 SRC=192.168.1.1 DST=224.0.0.1
LEN=32 TOS=0x00 PREC=0x80 TTL=1 ID=0 DF PROTO=2
+ août 29 21:01:28 Template1604LTS kernel: [UFW BLOCK] IN=admin OUT=
MAC=01:00:5e:00:00:01:a0:1b:29:89:4f:1a:08:00 SRC=192.168.1.1 DST=224.0.0.1
LEN=32 TOS=0x00 PREC=0x80 TTL=1 ID=0 DF PROTO=2
+ août 29 21:02:08 Template1604LTS kernel: [UFW BLOCK] IN=admin OUT=
MAC=01:00:5e:00:00:01:a0:1b:29:89:4f:1a:08:00 SRC=192.168.1.1 DST=224.0.0.1
LEN=32 TOS=0x00 PREC=0x80 TTL=1 ID=0 DF PROTO=2
_MarkForUpload: False
dmi.bios.date: 07/31/2013
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 6.00
dmi.board.name: 440BX Desktop Reference Platform
dmi.board.vendor: Intel Corporation
dmi.board.version: None
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: No Enclosure
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd07/31/2013:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A:
dmi.product.name: VMware Virtual Platform
dmi.product.version: None
dmi.sys.vendor: VMware, Inc.
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https://bugs.launchpad.net/bugs/1789653
Title:
regression with EXT4 file systems and meta_bg flag
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