2002-09-27 18:32:19

by Burton Windle

[permalink] [raw]
Subject: [2.5.38] loop trying to go beyond end of device

Hello. With the 2.5.38 kernel (preempt enabled), I am getting these errors
when I try to fill up a loop-mounted ext3 or ext2 partition.

The want number starts at 100002, and keeps going up and up and up by 2.

loop(7,2): rw=1, want=100316, limit=100000
attempt to access beyond end of device
loop(7,2): rw=1, want=100318, limit=100000
attempt to access beyond end of device

I can reproduce this with this script:

touch /tmp/foo
mke2fs -j -F /tmp/foo 10000
mkdir /mnt/tmp
mount -o loop /tmp/foo /mnt/tmp
cd /mnt/tmp
dd if=/dev/urandom of=blah

As the partition fills up, I start getting the above message.

Linux version 2.5.38 ([email protected]) (gcc version 2.95.4 20011002 (Debian
prerelease)) #5 Fri Sep 27 10:00:24 EST 2002

Gnu C 2.95.4
Gnu make 3.79.1
util-linux 2.11n
mount 2.11n
modutils 2.4.19
e2fsprogs 1.27
Linux C Library 2.2.5
Dynamic linker (ldd) 2.2.5
Procps 2.0.7
Net-tools 1.60
Console-tools 0.2.3
Sh-utils 2.0.12

Burton Windle [email protected]
Linux: the "grim reaper of innocent orphaned children."
from /usr/src/linux-2.4.18/init/main.c:461