12:48 p.m.
Download from: http://people.redhat.com/anderson
Changelog:
- Fix for the ARM "irq" command. Without the patch, on 2.6.34 and
later kernels configured with CONFIG_SPARSE_IRQ, the command fails
with the error message "irq: cannot determine number of IRQs".
(Jan.Karlsson(a)sonymobile.com)
- Fix for a segmentation violation generated during invocation while
parsing a makedumpfile-created "flat-format" vmcore-incomplete file.
Without the patch, the crash session would display the error message
"crash: unable to seek dump file vmcore-incomplete", followed by a
segmentation violation.
(anderson(a)redhat.com)
- Fix for a segmentation violation generated by the "kmem -s" option
when encountering a corrupted array_cache structure that contains
a bogus "avail" count that is greater than the maximum legitimate
limit value. Without the patch, the "kmem -s" command would print
a warning message regarding the invalid array_cache, complete the
command normally, and then generate a segmentation violation when
freeing buffers used by the command.
(anderson(a)redhat.com)
- Update to the "kmem -s" function to include the errors found in slab
structures to the display of total errors found when the command
completes. Without the patch, invalid list_head pointers, bad
inuse counters, and bad s_mem pointers were not added to the total
number of errors found.
(anderson(a)redhat.com)
- Fix for "crash --osrelease <dumpfile>" and "crash --log
<dumpfile>"
when run on an ARM compressed kdump with a crash binary that was built
with "make target=ARM" on an x86 or x86_64 host. Without the patch,
if the compressed kdump header version is 4 or 5, "crash --osrelease"
fails with the error message "crash: compressed kdump: cannot lseek
dump vmcoreinfo" followed by "unknown", and "crash --log"
fails with
the error message "crash: <dumpfile>: no VMCOREINFO section".
(anderson(a)redhat.com)
- Enhancement to the "swap" command to display the swap_info_struct
address of each configured swap device. The output has been changed
to display the address in the first column, and the variable-length
device name has been moved to the last column.
(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 nodes that contain no memory. Without the patch,
both command options fail immediately with the message "kmem: invalid
kernel virtual address: 8 type: kmem_cache_node nr_partial".
(anderson(a)redhat.com)
- Increment the PPC64 NR_CPUS maximum value from 1024 to 2048.
(anderson(a)redhat.com)
- Strip the ".isra." and ".part." appendages to cloned text symbol
names, which seem to have been introduced by gcc-4.6.0. To keep
them intact, a "--no_strip" command line option has been added.
(anderson(a)redhat.com)
- Patch to the internal gdb_get_datatype() function to return the
typecode and length of integer variables.
(adrian.wenl(a)gmail.com, anderson(a)redhat.com)
- Fix for the "dev -d" option on Linux 3.6 and later kernels. Without
the patch the option fails with the message "dev: invalid structure
member offset: request_queue_rq".
(holzheu(a)linux.vnet.ibm.com)
- Export the red/black tree utility functions rb_first(), rb_parent(),
rb_right(), rb_left(), rp_next() and rb_last(). Without the patch,
they are statically declared and only used by the "runq" command.
(qiaonuohan(a)cn.fujitsu.com)
- Implemented a new "timer -r" option that displays the hrtimer queues,
supporting all versions from Linux 2.6.16 to the present.
(qiaonuohan(a)cn.fujitsu.com, anderson(a)redhat.com)
- Fix for "kmem -s" on Linux 3.8 and later kernels that are configured
with CONFIG_SLAB. The kmem_cache.array[] length has been extended to
store the nodelist pointers, so the original method to determine the
per-cpu array limit can go out-of-range. Without the patch, during
session initialization there may be a message that indicates "crash:
invalid kernel virtual address: <address> type: array cache limit",
followed by "crash: unable to initialize kmem slab cache subsystem";
if those messages do get shown, then "kmem -s" will subsequently fail
during runtime with the message "kmem: kmem cache slab subsystem not
available".
(qiaonuohan(a)cn.fujitsu.com)
- Two Xen hypervisor fixes:
(1) Fix console buffer content length calculation:
Xen changeset 26447 (x86: re-introduce map_domain_page() et
al) once again altered virtual address space. The current
algorithm calculating its start could not cope with that
change. New version establishes this value on the base of
image start address and is more generic.
(2) Improve calculation of beginning of virtual address space:
Function displaying console buffer always assumes its content
length equal to console buffer size. This is not true and
sometimes it sends garbage to the screen. This patch fixes
this issue.
(daniel.kiper(a)oracle.com)
- Fix for the ARM "vtop" command when run on a module address. Without
the patch, the command fails with error message "vtop: ambiguous
address: <module-address> (requires -u or -k)".
(anderson(a)redhat.com)
- Add the "--active" command line option to the crash(8) man page
and to the "crash [-h|--help]" output.
(anderson(a)redhat.com)
- Add the "--buildinfo" command line option to the crash(8) man page
and to the "crash [-h|--help]" output.
(anderson(a)redhat.com)
- Remove the unadvertised and unnecessary "--data_debug" command line
option, given that it is the default setting.
(anderson(a)redhat.com)
- Remove the unadvertised and obsolete "--no_namelist_gzip" command
line option.
(anderson(a)redhat.com)
- Add the "-g [namelist]" command line option to the crash(8) man page
and to the "crash [-h|--help]" output.
(anderson(a)redhat.com)
- Remove the unadvertised and never-implemented "--shadow_page_tables"
command line option.
(anderson(a)redhat.com)
- Fix for the ARM "vtop" command when run on a user virtual address
of the panic task. Prior to Linux 3.3, the panic task's pgd gets
overwritten with a pgd that identity-maps the whole address space,
and therefore crash loses the capability of translating any user
virtual address into its original physical address.
(mika.westerberg(a)iki.fi)
- Fix to prevent the ARM linker mapping symbols "$d" and "$a" from
being added to the list of symbols from kernel modules. Without the
patch, the two symbols would only be rejected from the base kernel's
symbol list, but would be added to the symbol list of individual
kernel modules.
(mika.westerberg(a)iki.fi)
- Fix for the X86_64 "bt" command to recognize that the kernel was
built with CONFIG_FRAME_POINTER on Linux 3.7 and later kernels
that are configured with CONFIG_FUNCTION_TRACER. In those kernels,
the special 4-byte NOP instruction that can be overwritten during
runtime for dynamic ftracing has been moved to the very beginning
of each function, before the function preamble. Without the patch,
the test that checks the function preamble to determine whether
CONFIG_FRAME_POINTER was configured would fail, which could
potentially lead to less reliable backtraces.
(anderson(a)redhat.com)