RepoMirrors/crash
1
0
Fork 0
mirror of https://github.com/crash-utility/crash synced 2024-12-14 13:14:31 +00:00
Code Issues Packages Projects Releases Wiki Activity
e726a31519
crash/memory_driver
History
Dave Anderson e726a31519 Update of the sample memory_driver/crash.c /dev/crash kernel driver 
to version 1.3, which adds support for Linux 4.6 and later ARM64
kernels, kernels configured with CONFIG_HARDENED_USERCOPY, and
S390X kernels use xlate_dev_mem_ptr() and unxlate_dev_mem_ptr()
instead of kmap() and kunmap().
(anderson@redhat.com)
2016-11-22 11:43:40 -05:00
..
crash.c Update of the sample memory_driver/crash.c /dev/crash kernel driver 2016-11-22 11:43:40 -05:00
Makefile Initial commit: crash-7.0.4 2014-01-28 16:46:11 -05:00
README Update of the sample memory_driver/crash.c /dev/crash kernel driver 2016-11-22 11:43:40 -05:00

README 

For live system analysis, the physical memory source must be one
of the following devices:

  /dev/mem
  /proc/kcore
  /dev/crash

If the live system kernel was configured with CONFIG_STRICT_DEVMEM
or CONFIG_HARDENED_USERCOPY, then /dev/mem cannot be used. 

If the live system kernel was configured without CONFIG_PROC_KCORE,
or if /proc/kcore is non-functional, then /proc/kcore cannot be used.  

The third alternative is this /dev/crash driver.  Presuming that 
/lib/modules/`uname -r`/build points to a kernel build tree or
kernel "devel" package tree, the module can simply be built and
installed like so:

  # make
  ...
  # insmod crash.ko

Once installed, the /dev/crash driver will be used by default for
live system crash sessions.