s390/jump label: add missing jump_label_apply_nops() call
authorHeiko Carstens <heiko.carstens@de.ibm.com>
Fri, 20 Feb 2015 09:58:59 +0000 (10:58 +0100)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Thu, 26 Feb 2015 08:24:45 +0000 (09:24 +0100)
commit6f367769e3979ac399078f3aea020f1bbe9a2f79
treeb87a5849cee01cb918e88073e8688655555ee65a
parentb24e2bdde4af656bb0679a101265ebb8f8735d3c
s390/jump label: add missing jump_label_apply_nops() call

When modules are loaded we want to transform the compile time generated
nops into runtime generated nops. Otherwise the jump label sanity check
will detect invalid code when trying to patch code.

Fixes this crash:

Jump label code mismatch at __rds_conn_create+0x3c/0x720
Found:    c0 04 00 00 00 01
Expected: c0 04 00 00 00 00
Kernel panic - not syncing: Corrupted kernel text
CPU: 0 PID: 10 Comm: migration/0 Not tainted 3.19.0-01935-g006610f #14
Call Trace:
<0000000000113260> show_trace+0xf8/0x158)
<000000000011332a> show_stack+0x6a/0xe8
<000000000069fd64> dump_stack+0x7c/0xd8
<0000000000698d54> panic+0xe4/0x288
<00000000006984c6> jump_label_bug.isra.2+0xbe/0xc001
<000000000011200c> __jump_label_transform+0x94/0xc8

Reported-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/kernel/module.c