[Crash-utility] crash version 4.0-3.2 is available

- Enabled CONFIG_SPARSEMEM support for ia64 kernels; tested on RHEL5-alpha (2.6.17-1.2519.4.5.el5). Without this fix, crash would fail during initialization with error message indicating: "crash: CONFIG_SPARSEMEM kernels not supported for this architecture" (anderson(a)redhat.com, dwilder(a)us.ibm.com) - Moved read_in_kernel_config() to just after the internal gdb module gets initialized. Without this fix, xen kernels built with CONFIG_IKCONFIG would fail during initialization indicating: "crash: gdb_interface: gdb not initialized?" (anderson(a)redhat.com, moriwaka(a)valinux.co.jp) - Implemented new s390/s390x command "s390dbf" command to print out kernel traces from the s390 debug feature (s390dbf). The debug feature is an s390 kernel trace API which uses wraparound buffers to store trace records in memory. Many of the s390 device drivers use this feature. There is some documentation of the s390dbf in the kernel sources under /Documentation/s390/s390dbf.txt. (holzheu(a)de.ibm.com) - RHEL5-alpha kernel modules (only x86_64 confirmed) may possibly fail to be loaded with the "mod" command due to dwarf2 errors associated with the the split module.ko/module.ko.debug debuginfo facility used by RHEL kernels. Bugzillas have been filed to address those problems, but the crash utility's error-reporting mechanism has beem modified to properly reflect that the internal gdb module has failed to load the kernel module's debug data. Without this fix, the "mod -[sS]" commands would silently return without loading the module data because the "add-symbol-file" operation inside the gdb module failed, did a longjmp(), and ended up back at the crash prompt. That behaviour has been changed to report the module name and the gdb error like so: crash> mod -S mod: /lib/modules/2.6.17-1.2564.1/kernel/drivers/scsi/scsi_mod.ko gdb add-symbol-file command failed crash> Note that this problem occurs in all post-RHEL4 kernels, i.e., FC4, FC5, and now FC6 and RHEL5. (anderson(a)redhat.com) - Fix for runaway unkillable "repeat" command output that can happen when scrolling is turned off and the command that was entered is bogus. (anderson(a)redhat.com) - Fix for "struct structure.member address" output when the member is an array; additional members beyond the array contents would get displayed. (anderson(a)redhat.com) - Fix to internal gdb module to properly handle relocatable kernel virtual addresses; this will be required for upcoming relocatable RHEL5 kernels required for the kexec/kdump facility. (anderson(a)redhat.com) - Combined kernel_init(PRE_GDB) and kernel_init(POST_GDB) into a single call to kernel_init() that is done after gdb is initialized; verify_version() now called by kernel_init(). This is just a code re-work, and does not change any functionality. (anderson(a)redhat.com) Download from: http://people.redhat.com/anderson