Red Hat Bugzilla – Bug 57940
'top' and 'ps' hang, possibly while accessing /proc
Last modified: 2007-04-18 12:38:51 EDT
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Description of problem:
For reasons as yet undetermined, 'top' and 'ps' hang in a system that seems
otherwise stable. Coincident with 'top' and 'ps' starting to hang, a wine
session running lotus notes locks up.
Doing an 'ls -lR' of the /proc file system causes a lockup, as well. More
specifically, it seems to hang while listing out the directory of a
particular process ID. I'd wager that that directory belongs to the wine
process that locks up.
All these lockups are unkillable (even using -9). The machine must be
rebooted (a tricky problem, considering /proc is corrupt).
So, what's the next step in trying to fix this?
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Run Lotus Notes under WINE
2.Wait for it to hang.
3.Wail and gnash teeth.
Actual Results: /proc gets corrupted, and things that depend on it start
Expected Results: Well, Ideally, nothing. Notes under WINE shouldn't
hang, either, but I'll tackle that locally (since it's a local version of
WINE and notes).
I'm filing this as a kernel bug, because the /proc filesystem is the
responsibility of the kernel, and userspace programs shouldn't be able to
corrupt it like this.
A deadlock in this area has been fixed in the 2.4.9-21 kernel, released as
Using this has fixd it for some machines, but not for others (some of them lock
up more now). Where can I find documentation on the errata, and how can this be