Red Hat Bugzilla – Bug 3128
kernel panic when swap space exhausted.
Last modified: 2008-05-01 11:37:50 EDT
Here's my system: i686, 128MB RAM, 136548k swap space.
kernel 2.2.5-15, passing kernel flag "mem=128M".
When my swap space is exhausted, the machine simply stops.
It's not thrashing- it just stops. No mouse response, no
keyboard response, the HD LED is not on.
It's very difficult to collect any other diagnostics, but I
was watching 'top' as the machine ran out of memory and top
observed that the swap space remaining was 0k.
I will forward this bug report to
I should mention that I'm using the stock kernel from the redhat
distro. The following modules were resident:
Module Size Used by
nfs 29944 9 (autoclean)
lockd 30856 1 (autoclean) [nfs]
sunrpc 52356 1 (autoclean) [nfs lockd]
3c59x 18920 1 (autoclean)
The "solution" is to add more swap space. There are many, many
deadlock conditions in the kernel that can be exercised by running
out of swap.