[ubuntu/artful-proposed] crash 7.1.9-1 (Accepted)
Balint Reczey
balint.reczey at canonical.com
Wed Aug 9 18:22:00 UTC 2017
crash (7.1.9-1) unstable; urgency=medium
* Patch from Balint Reczey <rbalint at ubuntu.com>: Build crash on all Linux
architectures (Closes: #763856, #757450)
* Patch from Balint Reczey <rbalint at ubuntu.com>: Continuous integration
tests can fail due to missing packages for the running kernel and missing
*-updates packages (Closes: #869367)
* 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.
* 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.
* 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.
* Linux 4.10 commit 401721ecd1dcb0a428aa5d6832ee05ffbdbffbbe finally exports
the x86_64 "phys_base" value in the VMCOREINFO note, so utilize it
whenever it exists.
* 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.
* 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.
* 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.
* Optimization of the "kmem -f <address>" and "kmem <r;address>" options to
significantly 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.
* 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'".
* 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.
* 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.
* 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.
* 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.
* 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.
* 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".
* 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".
* 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.
Date: 2017-07-26 22:30:57.297860+00:00
Changed-By: Troy Heber <troyh at debian.org>
Signed-By: Nish Aravamudan <nish.aravamudan at canonical.com>
https://launchpad.net/ubuntu/+source/crash/7.1.9-1
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