Re: reiserfs+acl makes processes hang?

[Kasper Sandberg <lkml@metanurb.dk>]

confirmed, i run 2.6.12 with reiserfs, created with reiserfsprogs 3.6.19

On Fri, 2005-07-15 at 23:19 +0000, Tarmo Tänav wrote:
> Hi,
> 
> I think I've found a bug in reiserfs acls. If triggered
> it means that any program trying to access the partition,
> where the bug occured, will just hang in D state, with
> no way to kill the program.
> 
> Here's how to reproduce:
> 1. mount a reiserfs volume (loopmount will do) with "-o acl".
> 2. create a directory "dir"
> 3. set some default acl: setfacl -d -m u:username:rwX dir
> 4. cd dir
> 5. dd if=/dev/zero of=somefile1 bs=4k count=100000
> (the idea is to run out of space)
> 6. now df should show 0 free space, if not then repeat 5.
> 7. echo "1" > somefile2 # this should hang infinitely
> 
> Now no program will be able to access the partition.
> 
> I haven't tried to reproduce it, but the same problem also happened
> when a user hit his hard quota limit on my server. Then no program
> could access his homedir.
> 
> 
> PS. I'm not subscribed to lkml so please CC
> 
> --
> Tarmo Tänav
> tarmo@itech.ee
> 
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