11:15 a.m.
Download from: http://people.redhat.com/anderson
Changelog:
- Fixes for the ARM "vtop" command display of kernel unity-mapped
virtual addresses. Without the patch, the PGD, PMD values may be
incorrect, and the PAGE value is always incorrectly calculated.
(paawan1982(a)yahoo.com, rabin(a)rab.in)
- Fix for Linux 2.6.34 and later kernels that are configured with
CONFIG_SLUB, but not configured with CONFIG_IKCONFIG, to be able
to determine the kernel's CONFIG_NR_CPUS value. Without the patch,
if the actual number of cpus is larger than the crash utility's
per-architecture NR_CPUS maximum value, then the cpus beyond the
NR_CPUS limit would not be accounted for.
(anderson(a)redhat.com)
- Increment the X86_64 NR_CPUS maximum value from 4096 to 5120.
(anderson(a)redhat.com)
- Try to determine whether the kernel is running as a virtual machine
by using any available kernel-specific data or by dumpfile type.
The results of the hypervisor type search will be stored in the
internal kernel_table data structure, and if a hypervisor type can
be determined, its name will be displayed by the "mach" command. The
result of the hypervisor determination, successful or otherwise, may
be viewed during session initialization if the -d<number> command
line option is invoked, or during runtime via the "help -k" option.
Only applicable to the X86, X86_64 and IA64 architectures.
(anderson(a)redhat.com)
- Allow the "ps command" and "foreach name" command options to
contain
more than the kernel's maximum of 15 characters that are stored in
each task's task_struct.comm[] array. Without the patch, the two
string arguments were required to be the possibly-truncated command
name string in order to match.
(anderson(a)redhat.com)
- Enhancement to the "ps" command to allow any of the "command"
arguments to be POSIX extended regular expressions. The expression
string must be encompassed by "'" characters, and will be matched
against the names of all tasks.
(anderson(a)redhat.com)
- Add support for 2GB pages in the S390X virtual-to-physical address
translation function. Required for the new IBM zEC12 Mainframe.
(holzheu(a)linux.vnet.ibm.com)
- Initial preparation for support of the ARM64 architecture.
(anderson(a)redhat.com)
- Fix for the "log" command if a kernel message contains either a
'\n' or a '\t'. Without the patch, the two characters are replaced
with a '.', and the message continues. With the patch applied,
the characters are printed, and if it is a '\n', spaces are inserted
after the linefeed so that the subsequent characters in the message
line up appropriately under the preceding line.
(holzheu(a)linux.vnet.ibm.com, anderson(a)redhat.com)
- Fix for the "kmem -[sS]" options on kernels that configured with both
CONFIG_SLUB and CONFIG_NODES_SHIFT, and that are running on hardware
that generates NUMA node ids that are not numbered consecutively.
Without the patch, both command options fail with the error message
"kmem: invalid kernel virtual address: 8 type: kmem_cache_node
nr_partial".
(anderson(a)redhat.com)
- Fix for the "trace.so" extension module's "trace show"
command.
Without the patch, the output showing each trace point is shown
with two hexadecimal virtual addresses instead of displaying them
symbolically using the format "<function> <-- <function>".
(qiaonuohan(a)cn.fujitsu.com)
- Fixes for handling incomplete/invalid ELF or compressed kdump
vmcores whose per-cpu NT_PRSTATUS notes are missing. For example,
this has been seen to happen when kexec/kdump incorrectly recognizes
a Xen DomU kernel as a Xen Dom0 kernel. Without the patch, possible
ramifications would be a NULL pointer dereference during session
intialization when searching for the panic task, or during the "bt"
command on an active task.
(d.hatayama(a)jp.fujitsu.com)
- Implemented a new "runq -g" option that displays CFS runqueue tasks
hierarchically by task_group. Tasks in throttled groups are also
displayed. The "runq" command with no option will no longer display
task_group data for the RT queue.
(zhangyanfei(a)cn.fujitsu.com)
- Patchset for Xen support up to version 4.2:
(1) Fix page tables caching issues,
(2) Use init_tss array or per_cpu__init_tss,
(3) Use per_cpu__crash_notes or crash_notes array,
(4) Try hard to get max_cpus value,
(5) Use cpu_present_map instead of cpu_online_map.
(daniel.kiper(a)oracle.com)
- Fix for the S390X virtual-to-physical address translation to allow
the HW Change-bit override bit (0x100) to be used in page table
entries.
(holzheu(a)linux.vnet.ibm.com)
- Fix for a rarely-seen circumstance in which a kdump ELF vmcore of
a Xen dom0 kernel gets incorrectly identified as a old-style netdump
ELF vmcore. This has only been seen after the original kdump ELF
vmcore was transformed via "makedumpfile -d1". Without the patch,
the crash session fails during initialization with the messages
"crash: invalid size request: 0 type: xen kdump p2m mfn page",
followed by "crash: cannot read xen kdump p2m mfn page". If run
against the Xen hypervisor, the session fails during initialization
with the error message "crash: read error: kernel virtual address:
<address> type: crashing_cpu".
(anderson(a)redhat.com)