Revision 342300cc9cd3428bc6bfe5809bfcc1b9a0f06702 authored by Martin Schwidefsky on 19 February 2016, 13:44:14 UTC, committed by Martin Schwidefsky on 22 February 2016, 08:29:35 UTC
git commit 8070361799ae1e3f4ef347bd10f0a508ac10acfb "s390: add support for vector extension" broke 31-bit compat processes in regard to signal handling. The restore_sigregs_ext32() function is used to restore the additional elements from the user space signal frame. Among the additional elements are the upper registers halves for 64-bit register support for 31-bit processes. The copy_from_user that is used to retrieve the high-gprs array from the user stack uses an incorrect length, 8 bytes instead of 64 bytes. This causes incorrect upper register halves to get loaded. Cc: stable@vger.kernel.org # 3.8+ Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
1 parent 81f70ba
Makefile
# Makefile for the Sun Boot PROM interface library under
# Linux.
#
asflags := -ansi
ccflags := -Werror
lib-y := bootstr_$(BITS).o
lib-y += init_$(BITS).o
lib-$(CONFIG_SPARC32) += memory.o
lib-y += misc_$(BITS).o
lib-$(CONFIG_SPARC32) += mp.o
lib-$(CONFIG_SPARC32) += ranges.o
lib-y += console_$(BITS).o
lib-y += printf.o
lib-y += tree_$(BITS).o
lib-$(CONFIG_SPARC64) += p1275.o
lib-$(CONFIG_SPARC64) += cif.o
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