[Bug 1631 (linux mm)] New - VM: Bad swap entry

[bugzilla-daemon@distro.conectiva.com.br]

http://distro.conectiva.com.br/bugzilla/show_bug.cgi?id=1631

           Summary: VM: Bad swap entry
           Product: Linux kernel MM
           Version: 2.4 (stable)
          Platform: i386
               URL:
        OS/Version: Linux
            Status: UNCONFIRMED
 Status Whiteboard:
          Keywords:
        Resolution:
          Severity: normal
          Priority: P3
         Component: linux mm
        AssignedTo: linux-mm-bugs@nl.linux.org
        ReportedBy: cesarb@nitnet.com.br


I was stress testing the VM in an old 386SX25 with 8MB of memory and 64MB of
swap in hda2. The stress test I was using was running the classic memory hog
'dselect' from Debian, while using NTP (locks 26% of the memory I have in the
386; can't turn it off since the clock is drifting badly), and running three ssh
sessions from another computer, one with 'vmstat 1', the other one with 'top
-s', and the third one idle.

After some time (about half an hour -- dselect is evil) I got the first message:

VM: Bad swap entry 00186b00

After some more time, I got:

VM: Bad swap entry 001ad100

After even more time, I got:

VM: Bad swap entry 001fa200

After more time (I didn't see when it appeared):

VM: Bad swap entry 002d1b00

And then, out of nothing, I started getting:

Unused swap offset entry in swap_count 002e3400
Unused swap offset entry in swap_dup 002e3400
VM: Bad swap entry 002e3400

lots of times (with the same exact values).

Sometime before closing the memory hog, the messages ceased appearing.

I'll try to attach the dmesg output.
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