Description of problem: When testing internal beta of RHEL4.8 I hit one message from qla2xxx driver. -- qla2300 0000:01:01.0: scsi(0:0:0:1): Mid-layer underflow detected (c000 of c000 bytes)...returning error status. -- This gets repeated many times. (full log available here: http://rhts.redhat.com/testlogs/48839/164792/1378770/messages) I see this on RHTS system ibm-js20-02.lab.bos.redhat.com when running stress test on the kernel (/kernel/distribution/stress-kernel). http://rhts.redhat.com/cgi-bin/rhts/jobs.cgi?id=48839 Version-Release number of selected component (if applicable): RHEL4-U8-re20090227.1 kernel 2.6.9-82.EL How reproducible: Not sure, but message appears when running stress test on specific system in RHTS. Steps to Reproduce: 1. Run /kernel/distribution/stress-kernel test on RHTS system ibm-js20-02.lab.bos.redhat.com. 2. Check messages log for the qla2xxx message Actual results: Following message appears on console: qla2300 0000:01:01.0: scsi(0:0:0:1): Mid-layer underflow detected (c000 of c000 bytes)...returning error status. Expected results: No underflow detected. Additional info: I've been searching in bugzilla and found bug for RHEL5.4 that seems to be related (same message appears there): bug 470510 However I did not hit panic. This message was present in 4.7, too, so this is not a regression. See RHTS job http://rhts.redhat.com/cgi-bin/rhts/jobs.cgi?id=40612
Created attachment 334321 [details] RHTS messages log The log from RHTS job, look for string qla2300.
Since RHEL 4.8 External Beta has begun, and this bugzilla remains unresolved, it has been rejected as it is not proposed as exception or blocker.