Am 19.05.15 um 01:12 schrieb Josh Triplett:
Package: src:linux
Version: 4.0.2-1
Severity: critical
Tags: upstream
4.0.3 includes a fix for a critical ext4 bug that can result in major
data loss. I believe this is the bug I just hit on my server, resulting
in massive filesystem corruption. See upstream commit
d2dc317d564a46dfc683978a2e5a4f91434e9711 ("ext4: fix data corruption
caused by unwritten and delayed extents"), which has been added to
stable kernels 4.0.3 as well as much older stable kernels.
Please consider incorporating this patch into the Debian kernels as soon
as possible, including into the Jessie kernel.
Some time ago I also had some massive data corruption problem with an
ext4 partition
which may also have been caused by the same bug. The notable thing is
that other ext4
installations have worked fine for a long while in spite of this bug. No
fsck had helped;
had to reformat having lost all data on the partition.
We need to warn any existing ext4 user! The patch should be distributed
as soon as
possible. My recommendation would be not to use ext4 or to convert to
btrfs unless
a fix is available. Otherwise assert your backups!
Elmar
- Josh Triplett
-- Package-specific info:
** Version:
Linux version 4.0.0-1-amd64 (debian-ker...@lists.debian.org) (gcc version 4.9.2
(Debian 4.9.2-16) ) #1 SMP Debian 4.0.2-1 (2015-05-11)
** Command line:
BOOT_IMAGE=/vmlinuz-4.0.0-1-amd64 root=/dev/mapper/data-root ro quiet
** Not tainted
-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 4.0.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages linux-image-4.0.0-1-amd64 depends on:
ii debconf [debconf-2.0] 1.5.56
ii initramfs-tools [linux-initramfs-tool] 0.120
ii kmod 20-1
ii linux-base 3.5
ii module-init-tools 20-1
Versions of packages linux-image-4.0.0-1-amd64 recommends:
ii firmware-linux-free 3.3
pn irqbalance <none>
Versions of packages linux-image-4.0.0-1-amd64 suggests:
pn debian-kernel-handbook <none>
ii grub-pc 2.02~beta2-23
pn linux-doc-4.0 <none>
Versions of packages linux-image-4.0.0-1-amd64 is related to:
pn firmware-atheros <none>
pn firmware-bnx2 <none>
pn firmware-bnx2x <none>
pn firmware-brcm80211 <none>
pn firmware-intelwimax <none>
pn firmware-ipw2x00 <none>
pn firmware-ivtv <none>
ii firmware-iwlwifi 0.43
pn firmware-libertas <none>
pn firmware-linux <none>
pn firmware-linux-nonfree <none>
pn firmware-myricom <none>
pn firmware-netxen <none>
pn firmware-qlogic <none>
pn firmware-ralink <none>
pn firmware-realtek <none>
pn xen-hypervisor <none>
-- debconf information:
linux-image-4.0.0-1-amd64/postinst/depmod-error-initrd-4.0.0-1-amd64: false
linux-image-4.0.0-1-amd64/prerm/removing-running-kernel-4.0.0-1-amd64: true
linux-image-4.0.0-1-amd64/postinst/mips-initrd-4.0.0-1-amd64:
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