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linux/drivers/s390/net
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Alexandra Winter d2b59bd4b0 s390/qeth: fix deadlock during failing recovery 
Commit 0b9902c1fcc5 ("s390/qeth: fix deadlock during recovery") removed
taking discipline_mutex inside qeth_do_reset(), fixing potential
deadlocks. An error path was missed though, that still takes
discipline_mutex and thus has the original deadlock potential.

Intermittent deadlocks were seen when a qeth channel path is configured
offline, causing a race between qeth_do_reset and ccwgroup_remove.
Call qeth_set_offline() directly in the qeth_do_reset() error case and
then a new variant of ccwgroup_set_offline(), without taking
discipline_mutex.

Fixes: b41b554c1ee7 ("s390/qeth: fix locking for discipline setup / removal")
Signed-off-by: Alexandra Winter <wintera@linux.ibm.com>
Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-09-21 20:02:24 -07:00
..
ctcm_dbug.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ctcm_dbug.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ctcm_fsms.c
s390/net: replace in_irq() with in_hardirq()
2021-08-16 11:15:47 +01:00
ctcm_fsms.h
s390/ctcm: remove orphaned function declarations
2020-10-02 16:22:49 -07:00
ctcm_main.c
s390/ctcm: Use GFP_ATOMIC in ctcmpc_tx().
2020-12-01 16:56:02 -08:00
ctcm_main.h
s390/ctcm: Use GFP_ATOMIC in ctcmpc_tx().
2020-12-01 16:56:02 -08:00
ctcm_mpc.c
s390/net: replace in_irq() with in_hardirq()
2021-08-16 11:15:47 +01:00
ctcm_mpc.h
s390/ctcm: remove orphaned function declarations
2020-10-02 16:22:49 -07:00
ctcm_sysfs.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
fsm.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-30 08:13:36 -08:00
fsm.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ism_drv.c
s390/ism: fix incorrect system EID
2020-10-26 16:29:14 -07:00
ism.h
net/smc: introduce System Enterprise ID (SEID)
2020-09-28 15:19:02 -07:00
Kconfig
s390/qeth: Switchdev event handler
2021-08-07 09:44:02 +01:00
lcs.c
s390/net: remove pm ops from ccwgroup drivers
2020-05-19 12:48:39 -07:00
lcs.h
net: convert lcs_reply.refcnt from atomic_t to refcount_t
2017-12-20 15:23:44 -05:00
Makefile
s390/qeth: move ethtool code into its own file
2019-02-15 20:35:29 -08:00
netiucv.c
s390/netiuvc: get rid of forward declarations
2021-06-12 13:06:33 -07:00
qeth_core_main.c
s390/qeth: fix deadlock during failing recovery
2021-09-21 20:02:24 -07:00
qeth_core_mpc.c
s390/qeth: remove OSN support
2021-07-20 06:17:06 -07:00
qeth_core_mpc.h
s390/qeth: clean up QETH_PROT_* naming
2021-07-20 06:17:06 -07:00
qeth_core_sys.c
s390/qeth: remove OSN support
2021-07-20 06:17:06 -07:00
qeth_core.h
s390/qeth: Fix deadlock in remove_discipline
2021-09-21 20:02:24 -07:00
qeth_ethtool.c
ethtool: extend coalesce setting uAPI with CQE mode
2021-08-24 07:38:29 -07:00
qeth_l2_main.c
s390/qeth: Fix deadlock in remove_discipline
2021-09-21 20:02:24 -07:00
qeth_l2_sys.c
s390/qeth: use dev->groups for common sysfs attributes
2020-12-07 06:55:21 -08:00
qeth_l2.h
s390/qeth: use dev->groups for common sysfs attributes
2020-12-07 06:55:21 -08:00
qeth_l3_main.c
s390/qeth: Fix deadlock in remove_discipline
2021-09-21 20:02:24 -07:00
qeth_l3_sys.c
s390/qeth: use dev->groups for common sysfs attributes
2020-12-07 06:55:21 -08:00
qeth_l3.h
s390/qeth: use dev->groups for common sysfs attributes
2020-12-07 06:55:21 -08:00
smsgiucv_app.c
s390: net: add SPDX identifiers to the remaining files
2017-11-24 14:28:43 +01:00
smsgiucv.c
s390/net: remove pm support from iucv drivers
2020-05-19 12:48:39 -07:00
smsgiucv.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00