AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/s390/boot
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Marcelo Henrique Cerri d82c0d12c9 s390/decompressor: fix initrd corruption caused by bss clear 
Reorder the operations in decompress_kernel() to ensure initrd is moved
to a safe location before the bss section is zeroed.

During decompression bss can overlap with the initrd and this can
corrupt the initrd contents depending on the size of the compressed
kernel (which affects where the initrd is placed by the bootloader) and
the size of the bss section of the decompressor.

Also use the correct initrd size when checking for overlaps with
parmblock.

Fixes: 06c0dd72ae ([S390] fix boot failures with compressed kernels)
Cc: stable@vger.kernel.org
Reviewed-by: Joy Latten <joy.latten@canonical.com>
Reviewed-by: Vineetha HariPai <vineetha.hari.pai@canonical.com>
Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-03-22 08:21:20 +01:00
..
compressed s390/decompressor: fix initrd corruption caused by bss clear 2017-03-22 08:21:20 +01:00
.gitignore s390: add various .gitignore files. 2012-05-16 14:42:41 +02:00
install.sh kbuild: use INSTALLKERNEL to select customized installkernel script 2009-09-20 12:18:14 +02:00
Makefile s390/boot: Install bzImage as default kernel image 2013-11-15 14:08:36 +01:00