- Enabled CONFIG_SPARSEMEM support for ia64 kernels; tested on
RHEL5-alpha (2.6.17-1.2519.4.5.el5). Without this fix, crash
would fail during initialization with error message indicating:
"crash: CONFIG_SPARSEMEM kernels not supported for this architecture"
(anderson@xxxxxxxxxx, dwilder@xxxxxxxxxx)
- Moved read_in_kernel_config() to just after the internal
gdb
module gets initialized. Without this fix, xen
kernels built
with CONFIG_IKCONFIG would fail during initialization
indicating:
"crash: gdb_interface: gdb not initialized?"
(anderson@xxxxxxxxxx, moriwaka@xxxxxxxxxxxxx)
- Implemented new s390/s390x command "s390dbf" command to
print out
kernel traces from the s390 debug feature (s390dbf).
The debug
feature is an s390 kernel trace API which uses wraparound
buffers
to store trace records in memory. Many of the
s390 device drivers
use this feature. There is some documentation
of the s390dbf in
the kernel sources under /Documentation/s390/s390dbf.txt.
(holzheu@xxxxxxxxxx)
- RHEL5-alpha kernel modules (only x86_64 confirmed) may possibly
fail to be loaded with the "mod" command due to dwarf2
errors
associated with the the split module.ko/module.ko.debug
debuginfo
facility used by RHEL kernels. Bugzillas have
been filed to
address those problems, but the crash utility's error-reporting
mechanism has beem modified to properly reflect that
the internal
gdb module has failed to load the kernel module's
debug data.
Without this fix, the "mod -[sS]" commands would silently
return
without loading the module data because the "add-symbol-file"
operation inside the gdb module failed, did a longjmp(),
and ended
up back at the crash prompt. That behaviour
has been changed
to report the module name and the gdb error like so:
crash> mod -S
mod: /lib/modules/2.6.17-1.2564.1/kernel/drivers/scsi/scsi_mod.ko
gdb add-symbol-file command failed
crash>
Note that this problem occurs in all post-RHEL4 kernels,
i.e.,
FC4, FC5, and now FC6 and RHEL5.
(anderson@xxxxxxxxxx)
- Fix for runaway unkillable "repeat" command output that
can happen
when scrolling is turned off and the command that
was entered is
bogus. (anderson@xxxxxxxxxx)
- Fix for "struct structure.member address" output when the
member
is an array; additional members beyond the array contents
would
get displayed. (anderson@xxxxxxxxxx)
- Fix to internal gdb module to properly handle relocatable
kernel
virtual addresses; this will be required for upcoming
relocatable
RHEL5 kernels required for the kexec/kdump facility.
(anderson@xxxxxxxxxx)
- Combined kernel_init(PRE_GDB) and kernel_init(POST_GDB)
into a
single call to kernel_init() that is done after gdb
is initialized;
verify_version() now called by kernel_init().
This is just a code
re-work, and does not change any functionality. (anderson@xxxxxxxxxx)
Download from: http://people.redhat.com/anderson
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