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| /openbmc/linux/fs/ext4/ |
| H A D | resize.c | f0a459de Mon Sep 03 21:19:43 CDT 2018 Theodore Ts'o <tytso@mit.edu> ext4: fix online resize's handling of a too-small final block group
Avoid growing the file system to an extent so that the last block
group is too small to hold all of the metadata that must be stored in
the block group.
This problem can be triggered with the following reproducer:
umount /mnt
mke2fs -F -m0 -b 4096 -t ext4 -O resize_inode,^has_journal \
-E resize=1073741824 /tmp/foo.img 128M
mount /tmp/foo.img /mnt
truncate --size 1708M /tmp/foo.img
resize2fs /dev/loop0 295400
umount /mnt
e2fsck -fy /tmp/foo.img
Reported-by: Torsten Hilbrich <torsten.hilbrich@secunet.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
f0a459de Mon Sep 03 21:19:43 CDT 2018 Theodore Ts'o <tytso@mit.edu> ext4: fix online resize's handling of a too-small final block group
Avoid growing the file system to an extent so that the last block
group is too small to hold all of the metadata that must be stored in
the block group.
This problem can be triggered with the following reproducer:
umount /mnt
mke2fs -F -m0 -b 4096 -t ext4 -O resize_inode,^has_journal \
-E resize=1073741824 /tmp/foo.img 128M
mount /tmp/foo.img /mnt
truncate --size 1708M /tmp/foo.img
resize2fs /dev/loop0 295400
umount /mnt
e2fsck -fy /tmp/foo.img
Reported-by: Torsten Hilbrich <torsten.hilbrich@secunet.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
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