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Created attachment 510027 [details] Screen dump of a crash Description of problem: Kernel crashes reliably with "CacheFiles: Error: Object already preemptively buried" error when runnign under higher load Version-Release number of selected component (if applicable): kernel-2.6.38.8-32.fc15.x86_64 cachefilesd-0.10.1-3.fc15.x86_64 How reproducible: Reliably. Steps to Reproduce: 1. Mount file system from NFS server using NFS4 with fsc option like that: castor-vlab:/home/ on /home type nfs4 (rw,noatime,vers=4,rsize=8192,wsize=8192,namlen=255,soft,proto=tcp,port=0,timeo=14,retrans=2,sec=sys,clientaddr=192.168.1.1,minorversion=0,fsc,local_lock=none,addr=192.168.1.2) 2. Make sure cachefilesd is configured and running 3. run several tasks that case high NFS traffic, especially accessing the same set of files from multiple jobs (like building the same software package in parallel) Actual results: Kernel crashes in fscache / cachefiles routines Expected results: no crash Additional info:
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