------- Comment on attachment From brueck...@de.ibm.com 2016-06-24 05:36 EDT-------
The FBA loader has only a limited amount of memory to build CCW requests. Therefore larger I/O requests need to be split. This splitting was off by one leading to the fact that one CCW request uses memory of another data structure which in turn leads to corrupted data. The resulting error message during IPL of a FBA device is: Start subchannel failed disabled wait PSW 00020000 80000000 00000000 00004502 The error might occur randomly depending on the size of the kernel image and offsets within it. Fix by correcting the split rule. Signed-off-by: Stefan Haberland <s...@linux.vnet.ibm.com> ** Attachment added: "s390-tools-zipl-fix-failed-start-subchannel-in-FBA-loader.patch" https://bugs.launchpad.net/bugs/1592990/+attachment/4712279/+files/s390-tools-zipl-fix-failed-start-subchannel-in-FBA-loader.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1592990 Title: HCPGIR450W CP entered; disabled wait PSW 00020000 80000000 00000000 00004502 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1592990/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
