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5f4026f8b2
linux/drivers/s390/cio
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Jan Glauber 5f4026f8b2 [S390] qdio: prevent dsci access without adapter interrupts 
A kernel panic may occur during sending or receiving network packets
on a machine without adapter interrupts since commit d36deae.
The bug is triggered by writing to the shared indicator address which
is set to 0 if the machine doesn't have adapter interrupts.

Make the reading and setting of the shared indicator dependent on the
adapter interrupt feature and while at it move the code to the
file containing the adapter interrupt related code.

Thanks to Jan Jaeger for tracking this down.

Reported-by: Jan Jaeger <jan.jaeger@westnet.com.au>
Tested-by: Jan Jaeger <jan.jaeger@westnet.com.au>
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2011-10-30 15:16:47 +01:00
..
airq.c [S390] cio: airq - fix array boundary 2009-03-26 15:24:14 +01:00
blacklist.c s390: Convert vmalloc/memset to vzalloc 2011-09-15 13:55:02 +02:00
blacklist.h
ccwgroup.c [S390] ccwgroup: cleanup 2011-10-30 15:16:43 +01:00
ccwreq.c [S390] cio: add message for timeouts on internal I/O 2011-10-30 15:16:41 +01:00
chp.c [S390] cio: update descriptor in chsc_chp_vary 2010-10-25 16:10:18 +02:00
chp.h [S390] cio: update descriptor in chsc_chp_vary 2010-10-25 16:10:18 +02:00
chsc_sch.c [S390] chsc_sch: add support for irq statistics 2011-10-30 15:16:44 +01:00
chsc_sch.h
chsc.c [S390] chsc: process channel-path-availability information 2011-05-23 10:24:31 +02:00
chsc.h [S390] cio: obtain mdc value per channel path 2011-01-05 12:47:28 +01:00
cio_debug.h
cio.c [S390] kdump backend code 2011-10-30 15:16:42 +01:00
cio.h [S390] css: remove subchannel private 2011-03-15 17:08:24 +01:00
cmf.c tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
crw.c [S390] cio: wait for channel report 2010-02-26 22:37:29 +01:00
css.c PM: Improve error code of pm_notifier_call_chain() 2011-07-15 23:58:20 +02:00
css.h [S390] sparse: fix sparse warnings about missing prototypes 2011-10-30 15:16:46 +01:00
device_fsm.c [S390] get rid of unused variables 2011-05-23 10:24:28 +02:00
device_id.c [S390] cio: use all available paths for some internal I/O 2010-08-09 18:12:54 +02:00
device_ops.c [S390] get rid of unused variables 2011-05-23 10:24:28 +02:00
device_pgid.c [S390] cio: notify drivers of channel path events 2010-10-25 16:10:19 +02:00
device_status.c [S390] cio: remove intretry flag 2009-12-07 12:51:31 +01:00
device.c [S390] fix mismatch in summation of I/O IRQ statistics 2011-10-30 15:16:15 +01:00
device.h [S390] fix mismatch in summation of I/O IRQ statistics 2011-10-30 15:16:15 +01:00
fcx.c [S390] drivers: Correct size given to memset 2009-12-18 17:43:32 +01:00
idset.c [S390] cio: introduce consistent subchannel scanning 2009-09-22 22:58:42 +02:00
idset.h [S390] cio: introduce consistent subchannel scanning 2009-09-22 22:58:42 +02:00
io_sch.h [S390] fix mismatch in summation of I/O IRQ statistics 2011-10-30 15:16:15 +01:00
ioasm.h [S390] cio: move asms to generic header 2011-03-15 17:08:23 +01:00
isc.c
itcw.c [S390] cio: reduce memory consumption of itcw structures 2011-01-05 12:47:29 +01:00
Makefile [S390] qdio: convert global statistics to per-device stats 2010-01-04 09:05:58 +01:00
orb.h [S390] cio: move orb definitions to separate header 2011-03-15 17:08:23 +01:00
qdio_debug.c [S390] qdio: add timestamp for last queue scan time 2011-10-30 15:16:45 +01:00
qdio_debug.h [S390] qdio: rework debug feature logging 2008-12-25 13:38:59 +01:00
qdio_main.c [S390] qdio: prevent dsci access without adapter interrupts 2011-10-30 15:16:47 +01:00
qdio_setup.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2011-10-28 16:44:18 -07:00
qdio_thinint.c [S390] qdio: prevent dsci access without adapter interrupts 2011-10-30 15:16:47 +01:00
qdio.h [S390] qdio: prevent dsci access without adapter interrupts 2011-10-30 15:16:47 +01:00