Download from: http://people.redhat.com/anderson Changelog: - Enhanced the "search" command to allow the searched-for value to be entered as a crash (expression) or a kernel symbol name. The resultant value of an (expression) or kernel symbol value must fit into in the designated value size if -w or -h are used, and neither variant may be used with the -c option. If found, both the resultant value and the argument input string will be displayed next to the target address(es). (anderson(a)redhat.com) - Added a new "search -t" option that will restrict the search to the kernel stack pages of all tasks. If one or more matches are found in a task's kernel stack, the output is preceded with a task-identifying header. (anderson(a)redhat.com) - Fix for the s390x "bt -[tT]" options when run on an active task on a live system. Without the patch, the options fail with the message "bt: invalid/stale stack pointer for this task: 0". (anderson(a)redhat.com) - Fix for s390x "vm -p" option, which may show invalid user to physical address translation data if a page is not mapped. Without the patch, a page's translation may indicate "<address> SWAP: (unknown swap location) OFFSET: 0", or show an incorrect swap offset on an actual swap device. (anderson(a)redhat.com) - Added new "vm -[xd]" options to be used in conjunction with "vm -[mv]", which override the current default output format with hexadecimal or decimal format for just the command instance. Without the patch, it would require changing the default output format with "hex" or "dec" prior to executing "vm -[mv]". The new flags may also be used with "foreach vm -[mv]". (anderson(a)redhat.com) - Fix for the s390x "vm -p" and "vtop -u &ltuser-address>" commands if the page containing the relevant PTE is not mapped. Without the patch, the commands fail with the error message "vm: read error: kernel virtual address: 0 type: entry" or "vtop: read error: kernel virtual address: 0 type: entry" (holzheu(a)linux.vnet.ibm.com) - Fix for the s390x "vm -p" command and "vtop -u &ltuser-address>" commands to properly translate pages that are swapped out into their swap file and offset. Without the patch, the swap file and offset would not be displayed. (holzheu(a)linux.vnet.ibm.com) - Added new "list -[xd]" options to be used in conjunction with "list -s", which override the current default output format with hexadecimal or decimal format for just the command instance. Without the patch, it would require changing the default output format with "hex" or "dec" prior to executing "list -s". (anderson(a)redhat.com) - Added new "net -[xd]" options to be used in conjunction with "net -S", which override the current default output format with hexadecimal or decimal format for just the command instance. Without the patch, it would require changing the default output format with "hex" or "dec" prior to executing "net -S". The new flags may also be used with "foreach net -S". (anderson(a)redhat.com) - Added new "mach -[xd]" options to be used in conjunction with "mach -c", which override the current default output format with hexadecimal or decimal format for just the command instance. Without the patch, it would require changing the default output format with "hex" or "dec" prior to executing "mach -c". (anderson(a)redhat.com) - If the value read from the cpu online, present, or possible masks contains a cpu bit value that is outside the architecture's maximum NR_CPUS value, print a warning message during invocation. Without the patch, a corrupt vmcore containing a bogus mask value could quietly corrupt heap memory. (per.fransson.ml(a)gmail.com) - Add support to for reading dumpfiles compressed by LZO using makedumpfile version 1.4.4 or later. This feature is disabled by default. To enable this feature, build the crash utility in the following manner: (1) Install the LZO libraries by using the host system's package manager or by directly downloading libraries from author's website. The packages required are: - lzo - lzo-minilzo - lzo-devel The author's website is: http://www.oberhumer.com/opensource/lzo (2) Create a CFLAGS.extra file and an LDFLAGS.extra file in top-level crash sources directory: - enter -DLZO in the CFLAGS.extra file - enter -llzo2 in the LDFLAGS.extra file. (3) Build crash with "make" as always. (d.hatayama(a)jp.fujitsu.com) - Fix for the included "trace" extension module. Without the patch, if the module initialization sequence fails, a double-free in the module may lead to a subsequent malloc() segmentation violation in the crash session. (per.fransson.ml(a)gmail.com) - Incorporated the "ipcs" extension module written by Qiao Nuohan as a built-in command. The command displays the kernel's usage of the System V shared memory, semaphore and message queue IPC facilities. It differs from the original extension module by fixing a failure scenario if the current task is exiting, and adds a "-n pid|task" option, which displays the IPCS facilities with respect to the namespace of a given pid or task. (qiaonuohan(a)cn.fujitsu.com, anderson(a)redhat.com) - Fix for a gdb-7.3.1 regression that causes the line number capability to fail with certain ranges of x86 base kernel text addresses. Without the patch, the "dis -l <symbol>" or "sym <symbol>" commands would fail to show line number information for certain ranges of base kernel text addresses. (anderson(a)redhat.com) - Added a new "printm" command to the embedded gdb module. It is currently only used by the "pstruct" extension module, but can be used to dump the type, size, offset, bitpos and bitsize values of an expression. (qiaonuohan(a)cn.fujitsu.com) - Added a new "runq -t" option that displays the timestamp information of each cpu's runqueue, which consists of either the rq.clock, the rq.most_recent_timestamp or rq.timestamp_last_tick value, whichever applies. Following each cpu timestamp is the last_run or timestamp value of the active task on that cpu, whichever applies, along with the task identification. (weijg.fnst(a)cn.fujitsu.com, anderson(a)redhat.com) - Fix for an initialization-time warning when running on a live system with the most recent version of the modprobe command, which no longer supports the -l and --type options. The modprobe is used to detect whether the crash.ko memory driver is part of the distribution. Without the patch, a warning message is issued that indicates "/sbin/modprobe: invalid option -- 'l'". If the driver is built into the kernel, the message is harmless. If the driver is not built into kernel, then the crash.ko (/dev/crash) driver would not be selected as the live memory source. (anderson(a)redhat.com)