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linux-stable/drivers/s390/cio
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Julian Wiedmann e521813468 s390/qdio: fix access to uninitialized qdio_q fields 
Ever since CQ/QAOB support was added, calling qdio_free() straight after
qdio_alloc() results in qdio_release_memory() accessing uninitialized
memory (ie. q->u.out.use_cq and q->u.out.aobs). Followed by a
kmem_cache_free() on the random AOB addresses.

For older kernels that don't have 6e30c549f6, the same applies if
qdio_establish() fails in the DEV_STATE_ONLINE check.

While initializing q->u.out.use_cq would be enough to fix this
particular bug, the more future-proof change is to just zero-alloc the
whole struct.

Fixes: 104ea556ee ("qdio: support asynchronous delivery of storage blocks")
Cc: <stable@vger.kernel.org> #v3.2+
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2018-05-15 07:40:36 +02:00
..
airq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blacklist.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blacklist.h s390: add a few more SPDX identifiers 2017-12-05 07:51:09 +01:00
ccwgroup.c s390/ccwgroup: require at least one ccw device 2018-04-10 07:38:57 +02:00
ccwreq.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
chp.c s390/cio: add util_string sysfs attribute 2018-03-28 08:38:22 +02:00
chp.h s390/chsc: query utility strings via fmt3 channel path descriptor 2018-03-26 16:13:16 +02:00
chsc.c s390/cio: update chpid descriptor after resource accessibility event 2018-04-23 07:57:16 +02:00
chsc.h s390/chsc: query utility strings via fmt3 channel path descriptor 2018-03-26 16:13:16 +02:00
chsc_sch.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
chsc_sch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cio.c s390: assume diag308 set always works 2018-04-10 07:38:59 +02:00
cio.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cio_debug.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
cmf.c s390/cmf: fix kerneldoc 2018-02-02 10:47:14 +01:00
crw.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
css.c treewide: Use DEVICE_ATTR_RO 2018-01-09 16:34:34 +01:00
css.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
device.c s390/cio: fix unbind of io_subchannel_driver 2018-03-26 16:13:06 +02:00
device.h s390/cio: Convert timers to use timer_setup() 2017-11-14 11:01:36 +01:00
device_fsm.c s390/cio: clear timer when terminating driver I/O 2018-02-22 10:09:27 +01:00
device_id.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
device_ops.c s390/cio: rename struct channel_path_desc 2018-03-26 16:13:11 +02:00
device_pgid.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
device_status.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
eadm_sch.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
eadm_sch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fcx.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idset.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idset.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
io_sch.h s390/cio: fix return code after missing interrupt 2018-02-22 10:09:25 +01:00
ioasm.c s390: assume diag308 set always works 2018-04-10 07:38:59 +02:00
ioasm.h s390: assume diag308 set always works 2018-04-10 07:38:59 +02:00
isc.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
itcw.c s390/cio: fix kernel-doc usage 2018-02-05 07:34:52 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
orb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
qdio.h s390: qdio: Convert timers to use timer_setup() 2017-11-14 11:01:33 +01:00
qdio_debug.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
qdio_debug.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
qdio_main.c s390/qdio: clear intparm during shutdown 2018-04-10 07:38:58 +02:00
qdio_setup.c s390/qdio: fix access to uninitialized qdio_q fields 2018-05-15 07:40:36 +02:00
qdio_thinint.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
scm.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
trace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vfio_ccw_cp.c vfio: ccw: fix cleanup if cp_prefetch fails 2018-04-27 07:23:20 +02:00
vfio_ccw_cp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vfio_ccw_drv.c s390: cio: add SPDX identifiers to the remaining files 2017-11-24 14:28:41 +01:00
vfio_ccw_fsm.c vfio: ccw: process ssch with interrupts disabled 2018-04-23 07:57:17 +02:00
vfio_ccw_ops.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vfio_ccw_private.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00