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Hash: SHA1 |
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Mark Haney wrote: |
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> Ever since I blew away my .kde folder I'm getting this error on k3b: |
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> |
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> :-( unable to anonymously mmap 33554432: Resource temporarily unavailable |
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> |
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Not 100% sure on the exact error, but it sounds like a problem I was |
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having. Try ulimit -l - it probably comes back with some absurdly low |
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limit of 32 or such. Not sure where the defaults are configured, but |
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this is the locked memory quota and 32K is not quite enough to burn a |
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disc. (Locked memory is memory that is not permitted to be swapped to |
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disk - the logic being that by locking the buffer you assure that it |
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will be rapidly available and you're less likely to create coasters.) |
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|
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The solution is to "ulimit -l unlimited" as root, then su to your user |
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account before running k3b. Your user login will inherit the higher |
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quota that way. |
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|
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If somebody knows where to change the defaults let me know - I tried |
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inserting the following line into /etc/security/limits.conf to no avail: |
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@cdrom hard memlock 64000 |
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|
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|
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The limit on locked memory is probably low to help prevent DoS attacks - |
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if you lock all the physical RAM in the machine you force whatever is |
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left running to swap into some absurdly small amount of actual RAM. |
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However, if the limit is per-process you can still just DoS the system |
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by forking a million times and allocating 32K to each process. In any |
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case, if you don't want somebody to DoS your system you probably don't |
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want to give access to run arbitrary programs... |
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|
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Version: GnuPG v1.4.5 (GNU/Linux) |
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Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org |
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=5YW7 |
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