Bug#856808: error during mount: first meta block group too large
Package: linux-image-4.9.0-2-amd64
Version: 4.9.13-1
Severity: important
Tags: patch upstream
Hi!
After rebooting one of my systems with 4.9.x I got hit by the following
error:
[ 309.934171] EXT4-fs (dm-5): mounting ext3 file system using the ext4 subsystem
[ 309.934748] EXT4-fs (dm-5): first meta block group too large: 1 (group descriptor block count 1)
Unfortunately for me this is my /var filesystem.
This is https://bugzilla.kernel.org/show_bug.cgi?id=194567 and got fixed
by https://patchwork.ozlabs.org/patch/728066/
Rebuilding the kernel with the patch applied allows my system to mount
and boot again. Please add the fix to the next release, should be fix
not be included in a stable release until then.
Grüße,
Sven.
-- System Information:
Debian Release: 9.0
APT prefers unstable-debug
APT policy: (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'unstable'), (500, 'testing'), (200, 'experimental'), (1, 'experimental-debug')
Architecture: i386 (x86_64)
Foreign Architectures: amd64
Kernel: Linux 4.8.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages linux-image-4.9.0-2-amd64:amd64 depends on:
ii initramfs-tools [linux-initramfs-tool] 0.127
ii kmod 24-1
ii linux-base 4.5
Versions of packages linux-image-4.9.0-2-amd64:amd64 recommends:
ii firmware-linux-free 3.4
ii irqbalance 1.1.0-2.2
Versions of packages linux-image-4.9.0-2-amd64:amd64 suggests:
pn debian-kernel-handbook <none>
ii grub-pc 2.02~beta3-5
pn linux-doc-4.9 <none>
-- debconf-show failed
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index dde14a7ac6d7..a673558fe5f8 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3860,7 +3860,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) /
EXT4_DESC_PER_BLOCK(sb);
if (ext4_has_feature_meta_bg(sb)) {
- if (le32_to_cpu(es->s_first_meta_bg) >= db_count) {
+ if (le32_to_cpu(es->s_first_meta_bg) > db_count) {
ext4_msg(sb, KERN_WARNING,
"first meta block group too large: %u "
"(group descriptor block count %u)",
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index dde14a7ac6d7..a673558fe5f8 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3860,7 +3860,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) /
EXT4_DESC_PER_BLOCK(sb);
if (ext4_has_feature_meta_bg(sb)) {
- if (le32_to_cpu(es->s_first_meta_bg) >= db_count) {
+ if (le32_to_cpu(es->s_first_meta_bg) > db_count) {
ext4_msg(sb, KERN_WARNING,
"first meta block group too large: %u "
"(group descriptor block count %u)",
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