2:13 p.m.
Download from: http://people.redhat.com/anderson
or
https://github.com/crash-utility/crash/releases
The github master branch serves as a development branch that will contain
all patches that are queued for the next release:
$ git clone git://github.com/crash-utility/crash.git
Changelog:
- Fixes to address three gcc-7.0.1 compiler warnings that are generated
when building with "make warn". The warning types are
"[-Wnonnull]"
in filesys.c, and "[-Wformat-overflow=]" in kernel.c and cmdline.c.
(anderson(a)redhat.com)
- Fix for the PPC64 "mach -o" option to update the OPAL console buffer
size from 256K to 1MB, based upon the latest skiboot firmware source.
(ankit(a)linux.vnet.ibm.com)
- Fix for the "mod -[sS]" option to prevent the erroneous reassignment
of one or more symbol values of a kernel module. Without the patch,
when loading a kernel module, a message may indicate "mod: <module>:
last symbol: <symbol> is not _MODULE_END_<module>?" may be displayed,
and one or more symbols may be reassigned an incorrect symbol value.
If none of the erroneous symbol value reassignments are beyond the
end of the module's address space, then there will be no message.
(anderson(a)redhat.com)
- Linux 4.10 commit 401721ecd1dcb0a428aa5d6832ee05ffbdbffbbe finally
exports the x86_64 "phys_base" value in the VMCOREINFO note, so
utilize it whenever it exists.
(anderson(a)redhat.com)
- Implemented a new "log -a" option that dumps the audit logs remaining
in kernel audit buffers that have not been copied out to the
user-space audit daemon.
(d.hatayama(a)jp.fujitsu.com)
- Fix for the "kmem <address>" option and the "search" command
in x86_64 kernels that contain, or have backports of, kernel commit
7c1da8d0d046174a4188b5729d7579abf3d29427, titled "crypto: sha - SHA1
transform x86_64 AVX2", which introduced an "_end" text symbol.
Without the patch, if a base kernel symbol address that is larger
than the "_end" text symbol is passed to "kmem <address>",
its
symbol/filename information will not be displayed. Also, when the
"search" command scans the __START_KERNEL_map region that contains
kernel text and static data, the search will be truncated to stop at
the "_end" text symbol address.
(anderson(a)redhat.com)
- Enhancement for the determination of the ARM64 "kimage_voffset" value
in Linux 4.6 and later kernels if an ELF format dumpfile does not
contain its value in a VMCOREINFO note, or when running against
live systems using /dev/mem, /proc/kcore, or an older version of
/dev/crash.
(liyueyi(a)live.com)
- Optimization of the "kmem -f <address>" and "kmem
<r;address>" options
to signficantly reduce the amount of time to complete the buddy
allocator free-list scan for the target address. On very large
memory systems, the patch may reduce the time spent by several orders
of magnitude.
(anderson(a)redhat.com)
- Fix for a compilation error if glibc-2.25 or later has been installed
on the host build machine. Without the patch, the build fails with
the error message "amd64-linux-nat.c:496:1: error: conflicting types
for 'ps_get_thread_area'".
(anderson(a)redhat.com)
- Fix for the "list -[hH]" options if a list_head.next pointer is
encountered that contains an invalid NULL pointer. Without the
patch, the "list -[hH]" options would complete/continue as if the
NULL were a legitimate end-of-list indicator, and no error would be
reported.
(rabin.vincent(a)axis.com)
- Provide basic Huge Page usage as part of "kmem -i" output, showing
the total amount of memory allocated for huge pages, and the amount
of the total that is free.
(atomlin(a)redhat.com)
- Fix for the determination of the x86_64 "phys_base" value when it is
not passed in the VMCOREINFO data of ELF vmcores. Without the patch,
it is possible that the base address of the vmalloc region is unknown
and initialized to an incorrect default address during the very early
stages of initialization, which causes the parsing of the PT_LOAD
segments for the START_KERNEL_map region to fail.
(anderson(a)redhat.com)
- Fix for the "dis" command to detect duplicate symbols in the case
of a "symbol+offset" argument where the duplicates are contiguous
in the symbol list. In addition, reject "symbol+offset" arguments
if the resultant address goes beyond the end of the function.
(anderson(a)redhat.com)
- Fix for the "set scope" option if the kernel was configured with
CONFIG_RANDOMIZE_BASE. Without the patch, the command fails with
the message "set: gdb cannot find text block for address: <symbol>".
This also affects extension modules that call gdb_set_crash_scope()
when running with KASLR kernels.
(anderson(a)redhat.com)
- Fix for the extensions/trace.c extension module to account for
Linux 4.7 kernel commit 9b94a8fba501f38368aef6ac1b30e7335252a220,
which changed the ring_buffer_per_cpu.nr_pages member from an int
to a long. Without the patch, the trace.so extension module fails
to load on big-endian machines, indicating "extend: Num of pages
is less than 0".
(feij.fnst(a)cn.fujitsu.com)
- Fix for the extensions/trace.c extension module when running on
the ppc64 architecture. Without the patch, the trace.so extension
module fails to load, indicating "extend: invalid text address:
ring_buffer_read". On the ppc64 architecture, the text symbol
is ".ring_buffer_read".
(anderson(a)redhat.com)
- Fix for the ARM64 "bt" command. Without the patch, the backtrace of
a non-panicking active task generates a segmentation violation when
analyzing Android 4.4-based dumpfiles.
(zhizhouzhang(a)asrmicro.com)