Gerald Schaefer a9f2f6865d s390/kaslr: store KASLR offset for early dumps ... The KASLR offset is added to vmcoreinfo in arch_crash_save_vmcoreinfo(), so that it can be found by crash when processing kernel dumps. However, arch_crash_save_vmcoreinfo() is called during a subsys_initcall, so if the kernel crashes before that, we have no vmcoreinfo and no KASLR offset. Fix this by storing the KASLR offset in the lowcore, where the vmcore_info pointer will be stored, and where it can be found by crash. In order to make it distinguishable from a real vmcore_info pointer, mark it as uneven (KASLR offset itself is aligned to THREAD_SIZE). When arch_crash_save_vmcoreinfo() stores the real vmcore_info pointer in the lowcore, it overwrites the KASLR offset. At that point, the KASLR offset is not yet added to vmcoreinfo, so we also need to move the mem_assign_absolute() behind the vmcoreinfo_append_str(). Fixes: b2d24b97b2 ("s390/kernel: add support for kernel address space layout randomization (KASLR)") Cc: <stable@vger.kernel.org> # v5.2+ Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>		2019-11-30 10:52:45 +01:00
..
compressed
.gitignore
als.c
boot.h
cmdline.c
ctype.c
ebcdic.c
head_kdump.S
head.S
install.sh
ipl_parm.c
ipl_report.c
ipl_vmparm.c
kaslr.c
machine_kexec_reloc.c
Makefile
mem_detect.c
mem.S
pgm_check_info.c
sclp_early_core.c
startup.c
string.c
text_dma.S
uv.c
version.c