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SubjectVFS: brelse error on reiserfs with linux-2.4.10-ac8 - ac10 - details

Oct 9 19:24:43 rushmore kernel: VFS: brelse: Trying to free free buffer

I tracked the above error which I've only seen on 2.4.10-ac8 and 2.4.10-ac10
while running Linux Test Project on reiserfs.

The offending test case appears to be: mmap01

Here is a log of results:

root@rushmore:/usr/src/sources/l/ltp# date
Tue Oct 9 19:49:15 EDT 2001

root@rushmore:/usr/src/sources/l/ltp# mount -t ext2 /dev/hda7 /tmp

root@rushmore:/usr/src/sources/l/ltp# mmap01 ; mmap01 ; mmap01
mmap01 1 PASS : Functionality of mmap() successful
mmap01 1 PASS : Functionality of mmap() successful
mmap01 1 PASS : Functionality of mmap() successful

root@rushmore:/usr/src/sources/l/ltp# tail /var/log/messages
Oct 9 19:24:34 rushmore kernel: Loaded 131 symbols from 11 modules.
Oct 9 19:24:43 rushmore kernel: VFS: brelse: Trying to free free buffer
Oct 9 19:26:19 rushmore exiting on signal 15
Oct 9 19:45:51 rushmore syslogd 1.4.1: restart.
Oct 9 19:45:51 rushmore kernel: klogd 1.4.1, log source = /proc/kmsg started.
Oct 9 19:45:51 rushmore kernel: Inspecting /boot/System.map-2.4.10-ac10a
Oct 9 19:45:51 rushmore kernel: Loaded 13702 symbols from /boot/System.map-2.4.10-ac10a.
Oct 9 19:45:51 rushmore kernel: Symbols match kernel version 2.4.10.
Oct 9 19:45:51 rushmore kernel: Loaded 131 symbols from 11 modules.
Oct 9 19:45:51 rushmore kernel: VFS: brelse: Trying to free free buffer

# note 19:45:51 error was from a previous run of mmap01

root@rushmore:/usr/src/sources/l/ltp# umount /tmp

root@rushmore:/usr/src/sources/l/ltp# df -T /tmp
Filesystem Type 1k-blocks Used Available Use% Mounted on
/dev/hda12
reiserfs 4056252 945108 3111144 24% /

root@rushmore:/usr/src/sources/l/ltp# mmap01 ; mmap01 ; mmap01
mmap01 1 PASS : Functionality of mmap() successful
mmap01 1 PASS : Functionality of mmap() successful
mmap01 1 PASS : Functionality of mmap() successful

root@rushmore:/usr/src/sources/l/ltp# tail /var/log/messages
Oct 9 19:24:43 rushmore kernel: VFS: brelse: Trying to free free buffer
Oct 9 19:26:19 rushmore exiting on signal 15
Oct 9 19:45:51 rushmore syslogd 1.4.1: restart.
Oct 9 19:45:51 rushmore kernel: klogd 1.4.1, log source = /proc/kmsg started.
Oct 9 19:45:51 rushmore kernel: Inspecting /boot/System.map-2.4.10-ac10a
Oct 9 19:45:51 rushmore kernel: Loaded 13702 symbols from /boot/System.map-2.4.10-ac10a.
Oct 9 19:45:51 rushmore kernel: Symbols match kernel version 2.4.10.
Oct 9 19:45:51 rushmore kernel: Loaded 131 symbols from 11 modules.
Oct 9 19:45:51 rushmore kernel: VFS: brelse: Trying to free free buffer
Oct 9 19:50:24 rushmore last message repeated 3 times

root@rushmore:/usr/src/sources/l/ltp# date
Tue Oct 9 19:50:35 EDT 2001


--
Randy Hron

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