Peter Oberparleiter 2df56f4ea7 s390/cio: fix race condition during online processing ... [ Upstream commit 2d8527f2f911fab84aec04df4788c0c23af3df48 ] A race condition exists in ccw_device_set_online() that can cause the online process to fail, leaving the affected device in an inconsistent state. As a result, subsequent attempts to set that device online fail with return code ENODEV. The problem occurs when a path verification request arrives after a wait for final device state completed, but before the result state is evaluated. Fix this by ensuring that the CCW-device lock is held between determining final state and checking result state. Note that since: commit 2297791c92 ("s390/cio: dont unregister subchannel from child-drivers") path verification requests are much more likely to occur during boot, resulting in an increased chance of this race condition occurring. Fixes: 2297791c92 ("s390/cio: dont unregister subchannel from child-drivers") Reviewed-by: Alexandra Winter <wintera@linux.ibm.com> Reviewed-by: Vineeth Vijayan <vneethv@linux.ibm.com> Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-04-27 17:11:34 +02:00
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block	s390/dasd: fix double module refcount decrement	2024-03-26 18:19:17 -04:00
char	more s390 updates for 6.6 merge window	2023-09-07 10:52:13 -07:00
cio	s390/cio: fix race condition during online processing	2024-04-27 17:11:34 +02:00
crypto	s390/zcrypt: fix reference counting on zcrypt card objects	2024-04-03 15:28:32 +02:00
net	s390/ism: Properly fix receive message buffer allocation	2024-04-27 17:11:33 +02:00
scsi	scsi: zfcp: Fix a double put in zfcp_port_enqueue()	2023-09-27 11:31:20 -04:00
virtio	s390/airq: remove lsi_mask from airq_struct	2023-08-30 11:03:28 +02:00
Makefile	…