tree b992cf1bb19fa3a863fe532119773a9be28e18d5
parent e7c95effcd3a7a0c9535c809141ca499fede2c31
author Martin Schwidefsky <schwidefsky@de.ibm.com> 1488264121 +0100
committer Martin Schwidefsky <schwidefsky@de.ibm.com> 1488358767 +0100

s390: fix in-kernel program checks

A program check inside the kernel takes a slightly different path in
entry.S compare to a normal user fault. A recent change moved the store
of the breaking event address into the path taken for in-kernel program
checks as well, but %r14 has not been setup to point to the correct
location. A wild store is the consequence.

Move the store of the breaking event address to the code path for
user space faults.

Fixes: 34525e1f7e8d ("s390: store breaking event address only for program checks")
Reported-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>