Vasily Gorbik 190f056fba s390/vdso: correct vdso mapping for compat tasks ... While "s390/vdso: avoid 64-bit vdso mapping for compat tasks" fixed 64-bit vdso mapping for compat tasks under gdb it introduced another problem. "compat_mm" flag is not inherited during fork and when 31-bit process forks a child (but does not perform exec) it ends up with 64-bit vdso. To address that, init_new_context (which is called during fork and exec) now initialize compat_mm based on thread TIF_31BIT flag. Later compat_mm is adjusted in arch_setup_additional_pages, which is called during exec. Fixes: d1befa6582 ("s390/vdso: avoid 64-bit vdso mapping for compat tasks") Reported-by: Stefan Liebler <stli@linux.ibm.com> Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: <stable@vger.kernel.org> # v4.20+ Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2019-01-11 17:12:02 +01:00
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asm	s390/vdso: correct vdso mapping for compat tasks	2019-01-11 17:12:02 +01:00
uapi/asm	arch: remove redundant UAPI generic-y defines	2019-01-06 10:22:15 +09:00